O'Fallon (MO) Water Quality

O'Fallon is a large public water system in EPA region 7 that provides tap water for the 63366 zip codes. It has 20 facilities where the water supply was tested for 78 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 3.15 µg/L. The maximum reported level of Manganese was 4.7 µg/L. There were 2 contamintants found in the O'Fallon water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (9)

Well #3 EPTDS
Well #3 ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: ?
Contaminant Details

1,2,3-trichloropropane (9)

Well #3 EPTDS
Well #3 ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: ?
Contaminant Details

1,3-butadiene (9)

Well #3 EPTDS
Well #3 ℹ️
0%
<0.1 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.1 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.1 µg/L
Below Reporting Level
11/19/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.1 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.1 µg/L
Reference Level: ?
Contaminant Details

1,4-dioxane (9)

Well #3 EPTDS
Well #3 ℹ️
0%
<0.07 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.07 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.07 µg/L
Below Reporting Level
11/19/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.07 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.07 µg/L
Below Reporting Level
7/1/2013
13 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.07 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.07 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.07 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.07 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.07 µg/L
Reference Level: ?
Contaminant Details

1-butanol (7)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<2 µg/L
Below Reporting Level
1/22/2020
6 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<2 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<2 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<2 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<2 µg/L
Below Reporting Level
4/24/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<2 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<2 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 2 µg/L
Reference Level: 700 µg/L
Contaminant Details

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

1H,1H,2H,2H-perfluorodecane sulfonic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

1H,1H,2H,2H-perfluorohexane sulfonic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

1H,1H,2H,2H-perfluorooctane sulfonic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

2,4-dinitrotoluene (12)

WELL # 2 1
WELL # 2 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #3
WELL #3 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #4
WELL #4 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #5
WELL #5 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #6
WELL #6 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #7
WELL #7 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL # 2 1
WELL # 2 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #3
WELL #3 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #4
WELL #4 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #5
WELL #5 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #6
WELL #6 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #7
WELL #7 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
Minimum Reporting Level: 2 µg/L
Reference Level: ?
Contaminant Details

2,6-dinitrotoluene (12)

WELL # 2 1
WELL # 2 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #3
WELL #3 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #4
WELL #4 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #5
WELL #5 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #6
WELL #6 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #7
WELL #7 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL # 2 1
WELL # 2 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #3
WELL #3 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #4
WELL #4 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #5
WELL #5 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #6
WELL #6 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #7
WELL #7 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
Minimum Reporting Level: 2 µg/L
Reference Level: ?
Contaminant Details

2-methoxyethanol (7)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.4 µg/L
Below Reporting Level
1/22/2020
6 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.4 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.4 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.4 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.4 µg/L
Below Reporting Level
4/24/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.4 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.4 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.4 µg/L
Reference Level: 21 µg/L
Contaminant Details

2-propen-1-ol (Allyl Alcohol) (7)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.5 µg/L
Below Reporting Level
1/22/2020
6 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.5 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.5 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.5 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.5 µg/L
Below Reporting Level
4/24/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.5 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.5 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.5 µg/L
Reference Level: 35 µg/L
Contaminant Details

4,4'-dichloro dichlorophenyl ethylene (DDE) (12)

WELL # 2 1
WELL # 2 ℹ️
0%
<0.8 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #3
WELL #3 ℹ️
0%
<0.8 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #4
WELL #4 ℹ️
0%
<0.8 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #5
WELL #5 ℹ️
0%
<0.8 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #6
WELL #6 ℹ️
0%
<0.8 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #7
WELL #7 ℹ️
0%
<0.8 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL # 2 1
WELL # 2 ℹ️
0%
<0.8 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #3
WELL #3 ℹ️
0%
<0.8 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #4
WELL #4 ℹ️
0%
<0.8 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #5
WELL #5 ℹ️
0%
<0.8 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #6
WELL #6 ℹ️
0%
<0.8 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #7
WELL #7 ℹ️
0%
<0.8 µg/L
Below Reporting Level
11/12/2002
23 years ago
Minimum Reporting Level: 0.8 µg/L
Reference Level: ?
Contaminant Details

4,8-dioxa-3H-perfluorononanoic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.002 µg/L
Reference Level: ?
Contaminant Details

alpha-hexachlorocyclohexane (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.01 µg/L
Below Reporting Level
12/26/2019
6 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.01 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.01 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.01 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.01 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.01 µg/L
Below Reporting Level
5/13/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.01 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.01 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.01 µg/L
Reference Level: 0.006 µg/L
Contaminant Details

anatoxin-a (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
6/18/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
6/3/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/21/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/7/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
4/16/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
4/3/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
3/19/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
3/6/2019
7 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: ?
Contaminant Details

bromochloromethane (Halon 1011) (9)

Well #3 EPTDS
Well #3 ℹ️
0%
<0.06 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.06 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.06 µg/L
Below Reporting Level
11/19/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.06 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.06 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.06 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.06 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.06 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.06 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.06 µg/L
Reference Level: ?
Contaminant Details

bromomethane (9)

Well #3 EPTDS
Well #3 ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/19/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: ?
Contaminant Details

Butylated Hydroxyanisole (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
12/26/2019
6 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.03 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.03 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: ?
Contaminant Details

chlorate (12)

150 Firma Road
Distribution System ℹ️
7650%
1530 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 1510 µg/L
6/24/2014
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
6750%
1350 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 1330 µg/L
6/24/2014
12 years ago
Well #7 EPTDS
Well #7 ℹ️
990%
198 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 178 µg/L
6/24/2014
12 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<20 µg/L
Below Reporting Level
6/4/2014
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
4580%
916 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 896 µg/L
3/31/2014
12 years ago
150 Firma Road
Distribution System ℹ️
3460%
692 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 672 µg/L
3/31/2014
12 years ago
Well #7 EPTDS
Well #7 ℹ️
2985%
597 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 577 µg/L
3/31/2014
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<20 µg/L
Below Reporting Level
11/20/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<20 µg/L
Below Reporting Level
11/20/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<20 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<20 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<20 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 20 µg/L
Reference Level: ?
Contaminant Details

chlorodifluoromethane (HCFC-22) (9)

Well #3 EPTDS
Well #3 ℹ️
0%
<0.08 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.08 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.08 µg/L
Below Reporting Level
11/19/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.08 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.08 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.08 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.08 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.08 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.08 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.08 µg/L
Reference Level: ?
Contaminant Details

chloromethane (9)

Well #3 EPTDS
Well #3 ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/19/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: ?
Contaminant Details

chlorpyrifos (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
12/26/2019
6 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.03 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/13/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.03 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: 2 µg/L
Contaminant Details

chromium (12)

Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.2 µg/L
Below Reporting Level
6/4/2014
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/20/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/20/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/20/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/20/2013
12 years ago
150 Firma Road
Distribution System ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/20/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
105%
0.21 µg/L
⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.01 µg/L
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
150 Firma Road
Distribution System ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: ?
Contaminant Details

chromium-6 (11)

150 Firma Road
Distribution System ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/20/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
103.3%
0.031 µg/L
⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.001 µg/L
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
150 Firma Road
Distribution System ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: ?
Contaminant Details

cobalt (12)

Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<1 µg/L
Below Reporting Level
6/4/2014
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<1 µg/L
Below Reporting Level
11/20/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<1 µg/L
Below Reporting Level
11/20/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<1 µg/L
Below Reporting Level
11/20/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<1 µg/L
Below Reporting Level
11/20/2013
12 years ago
150 Firma Road
Distribution System ℹ️
0%
<1 µg/L
Below Reporting Level
11/20/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<1 µg/L
Below Reporting Level
5/22/2013
13 years ago
150 Firma Road
Distribution System ℹ️
0%
<1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 1 µg/L
Reference Level: ?
Contaminant Details

cylindrospermopsin (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.09 µg/L
Below Reporting Level
6/18/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.09 µg/L
Below Reporting Level
6/3/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.09 µg/L
Below Reporting Level
5/21/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.09 µg/L
Below Reporting Level
5/7/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.09 µg/L
Below Reporting Level
4/16/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.09 µg/L
Below Reporting Level
4/3/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.09 µg/L
Below Reporting Level
3/19/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.09 µg/L
Below Reporting Level
3/6/2019
7 years ago
Minimum Reporting Level: 0.09 µg/L
Reference Level: 0.7 µg/L
Contaminant Details

dimethipin (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.2 µg/L
Below Reporting Level
12/26/2019
6 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.2 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.2 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.2 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/13/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.2 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: 140 µg/L
Contaminant Details

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (12)

WELL # 2 1
WELL # 2 ℹ️
0%
<1 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #3
WELL #3 ℹ️
0%
<1 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #4
WELL #4 ℹ️
0%
<1 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #5
WELL #5 ℹ️
0%
<1 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #6
WELL #6 ℹ️
0%
<1 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #7
WELL #7 ℹ️
0%
<1 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL # 2 1
WELL # 2 ℹ️
0%
<1 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #3
WELL #3 ℹ️
0%
<1 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #4
WELL #4 ℹ️
0%
<1 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #5
WELL #5 ℹ️
0%
<1 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #6
WELL #6 ℹ️
0%
<1 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #7
WELL #7 ℹ️
0%
<1 µg/L
Below Reporting Level
11/12/2002
23 years ago
Minimum Reporting Level: 1 µg/L
Reference Level: ?
Contaminant Details

ethoprop (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
12/26/2019
6 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.03 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/13/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.03 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: 1.14 µg/L
Contaminant Details

Germanium (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
12/26/2019
6 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.3 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.3 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.3 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.3 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.3 µg/L
Reference Level: ?
Contaminant Details

HAA5 (five regulated haloacetic acids) (8)

601¿Cannonball
Distribution System ℹ️
4.2%
2.53 µg/L
Meets Reporting Threshold
12/26/2019
6 years ago
401¿Coolsprings¿Rd.
Distribution System ℹ️
4.2%
2.52 µg/L
Meets Reporting Threshold
12/26/2019
6 years ago
401¿Coolsprings¿Rd.
Distribution System ℹ️
3.8%
2.28 µg/L
Meets Reporting Threshold
9/30/2019
7 years ago
601¿Cannonball
Distribution System ℹ️
2.2%
1.31 µg/L
Meets Reporting Threshold
9/30/2019
7 years ago
401¿Coolsprings¿Rd.
Distribution System ℹ️
3.9%
2.32 µg/L
Meets Reporting Threshold
6/11/2019
7 years ago
601¿Cannonball
Distribution System ℹ️
3.8%
2.27 µg/L
Meets Reporting Threshold
6/11/2019
7 years ago
601¿Cannonball
Distribution System ℹ️
5.3%
3.15 µg/L
Meets Reporting Threshold
3/25/2019
7 years ago
401¿Coolsprings¿Rd.
Distribution System ℹ️
5.1%
3.03 µg/L
Meets Reporting Threshold
3/25/2019
7 years ago
Minimum Reporting Level: 0.5 µg/L
Reference Level: 60 µg/L
Contaminant Details

HAA6Br (six brominated haloacetic acids) (8)

601¿Cannonball
Distribution System ℹ️
0%
3.91 µg/L
12/26/2019
6 years ago
401¿Coolsprings¿Rd.
Distribution System ℹ️
0%
3.85 µg/L
12/26/2019
6 years ago
401¿Coolsprings¿Rd.
Distribution System ℹ️
0%
3.31 µg/L
9/30/2019
7 years ago
601¿Cannonball
Distribution System ℹ️
0%
1.85 µg/L
9/30/2019
7 years ago
601¿Cannonball
Distribution System ℹ️
0%
2.8 µg/L
6/11/2019
7 years ago
401¿Coolsprings¿Rd.
Distribution System ℹ️
0%
2.61 µg/L
6/11/2019
7 years ago
601¿Cannonball
Distribution System ℹ️
0%
6.85 µg/L
3/25/2019
7 years ago
401¿Coolsprings¿Rd.
Distribution System ℹ️
0%
5.91 µg/L
3/25/2019
7 years ago
Minimum Reporting Level: 0 µg/L
Reference Level: ?
Contaminant Details

HAA9 (nine haloacetic acids) (8)

601¿Cannonball
Distribution System ℹ️
0%
5.74 µg/L
12/26/2019
6 years ago
401¿Coolsprings¿Rd.
Distribution System ℹ️
0%
5.69 µg/L
12/26/2019
6 years ago
401¿Coolsprings¿Rd.
Distribution System ℹ️
0%
5 µg/L
9/30/2019
7 years ago
601¿Cannonball
Distribution System ℹ️
0%
3.16 µg/L
9/30/2019
7 years ago
601¿Cannonball
Distribution System ℹ️
0%
4.56 µg/L
6/11/2019
7 years ago
401¿Coolsprings¿Rd.
Distribution System ℹ️
0%
4.4 µg/L
6/11/2019
7 years ago
601¿Cannonball
Distribution System ℹ️
0%
9.34 µg/L
3/25/2019
7 years ago
401¿Coolsprings¿Rd.
Distribution System ℹ️
0%
8.56 µg/L
3/25/2019
7 years ago
Minimum Reporting Level: 0 µg/L
Reference Level: ?
Contaminant Details

hexafluoropropylene oxide dimer acid (GenX) (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

lithium (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
275.6%
24.8 µg/L
⚠️ Exceeds Reporting Level of 9 µg/L by 15.8 µg/L
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
661.1%
59.5 µg/L
⚠️ Exceeds Reporting Level of 9 µg/L by 50.5 µg/L
8/19/2024
25 months ago
WELL # 4
OFALLON PWS ℹ️
448.9%
40.4 µg/L
⚠️ Exceeds Reporting Level of 9 µg/L by 31.4 µg/L
8/19/2024
25 months ago
WELL # 6
OFALLON PWS ℹ️
411.1%
37 µg/L
⚠️ Exceeds Reporting Level of 9 µg/L by 28 µg/L
8/19/2024
25 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<9 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
167.8%
15.1 µg/L
⚠️ Exceeds Reporting Level of 9 µg/L by 6.1 µg/L
6/5/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
792.2%
71.3 µg/L
⚠️ Exceeds Reporting Level of 9 µg/L by 62.3 µg/L
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
432.2%
38.9 µg/L
⚠️ Exceeds Reporting Level of 9 µg/L by 29.9 µg/L
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
408.9%
36.8 µg/L
⚠️ Exceeds Reporting Level of 9 µg/L by 27.8 µg/L
2/28/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
300%
27 µg/L
⚠️ Exceeds Reporting Level of 9 µg/L by 18 µg/L
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<9 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 9 µg/L
Reference Level: ?
Contaminant Details

Manganese (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0.8%
2.3 µg/L
Meets Reporting Threshold
12/26/2019
6 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0.7%
2.2 µg/L
Meets Reporting Threshold
9/30/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0.6%
1.8 µg/L
Meets Reporting Threshold
9/30/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.4 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
1.3%
3.9 µg/L
Meets Reporting Threshold
6/11/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
1.6%
4.7 µg/L
Meets Reporting Threshold
3/25/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0.6%
1.8 µg/L
Meets Reporting Threshold
3/25/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.4 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.4 µg/L
Reference Level: 300 µg/L
Contaminant Details

methyl-tertiary-butyl-ether (MTBE) (12)

WELL # 2 1
WELL # 2 ℹ️
0%
<5 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #3
WELL #3 ℹ️
0%
<5 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #4
WELL #4 ℹ️
0%
<5 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #5
WELL #5 ℹ️
0%
<5 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #6
WELL #6 ℹ️
0%
<5 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #7
WELL #7 ℹ️
0%
<5 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL # 2 1
WELL # 2 ℹ️
0%
<5 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #3
WELL #3 ℹ️
0%
<5 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #4
WELL #4 ℹ️
0%
<5 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #5
WELL #5 ℹ️
0%
<5 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #6
WELL #6 ℹ️
0%
<5 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #7
WELL #7 ℹ️
0%
<5 µg/L
Below Reporting Level
11/12/2002
23 years ago
Minimum Reporting Level: 5 µg/L
Reference Level: ?
Contaminant Details

molinate (12)

WELL # 2 1
WELL # 2 ℹ️
0%
<0.9 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #3
WELL #3 ℹ️
0%
<0.9 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #4
WELL #4 ℹ️
0%
<0.9 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #5
WELL #5 ℹ️
0%
<0.9 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #6
WELL #6 ℹ️
0%
<0.9 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #7
WELL #7 ℹ️
0%
<0.9 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL # 2 1
WELL # 2 ℹ️
0%
<0.9 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #3
WELL #3 ℹ️
0%
<0.9 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #4
WELL #4 ℹ️
0%
<0.9 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #5
WELL #5 ℹ️
0%
<0.9 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #6
WELL #6 ℹ️
0%
<0.9 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #7
WELL #7 ℹ️
0%
<0.9 µg/L
Below Reporting Level
11/12/2002
23 years ago
Minimum Reporting Level: 0.9 µg/L
Reference Level: ?
Contaminant Details

molybdenum (12)

Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<1 µg/L
Below Reporting Level
6/4/2014
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<1 µg/L
Below Reporting Level
11/20/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<1 µg/L
Below Reporting Level
11/20/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<1 µg/L
Below Reporting Level
11/20/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<1 µg/L
Below Reporting Level
11/20/2013
12 years ago
150 Firma Road
Distribution System ℹ️
0%
<1 µg/L
Below Reporting Level
11/20/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<1 µg/L
Below Reporting Level
5/22/2013
13 years ago
150 Firma Road
Distribution System ℹ️
0%
<1 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 1 µg/L
Reference Level: ?
Contaminant Details

N-ethyl perfluorooctanesulfonamidoacetic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
8/19/2024
25 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
8/19/2024
25 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
8/19/2024
25 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

N-methyl perfluorooctanesulfonamidoacetic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.006 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.006 µg/L
Below Reporting Level
8/19/2024
25 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.006 µg/L
Below Reporting Level
8/19/2024
25 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.006 µg/L
Below Reporting Level
8/19/2024
25 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.006 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.006 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.006 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.006 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.006 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.006 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.006 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.006 µg/L
Reference Level: ?
Contaminant Details

nitrobenzene (12)

WELL # 2 1
WELL # 2 ℹ️
0%
<10 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #3
WELL #3 ℹ️
0%
<10 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #4
WELL #4 ℹ️
0%
<10 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #5
WELL #5 ℹ️
0%
<10 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #6
WELL #6 ℹ️
0%
<10 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #7
WELL #7 ℹ️
0%
<10 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL # 2 1
WELL # 2 ℹ️
0%
<10 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #3
WELL #3 ℹ️
0%
<10 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #4
WELL #4 ℹ️
0%
<10 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #5
WELL #5 ℹ️
0%
<10 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #6
WELL #6 ℹ️
0%
<10 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #7
WELL #7 ℹ️
0%
<10 µg/L
Below Reporting Level
11/12/2002
23 years ago
Minimum Reporting Level: 10 µg/L
Reference Level: ?
Contaminant Details

nonafluoro-3,6-dioxaheptanoic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.02 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.02 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.02 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.02 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.02 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.02 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.02 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.02 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.02 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.02 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.02 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.02 µg/L
Reference Level: ?
Contaminant Details

o-toluidine (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.007 µg/L
Below Reporting Level
12/26/2019
6 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.007 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.007 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.007 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.007 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.007 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.007 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.007 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.007 µg/L
Reference Level: ?
Contaminant Details

oxyfluorfen (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.05 µg/L
Below Reporting Level
12/26/2019
6 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.05 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.05 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.05 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.05 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.05 µg/L
Below Reporting Level
5/13/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.05 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.05 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.05 µg/L
Reference Level: 200 µg/L
Contaminant Details

perchlorate (12)

WELL # 2 1
WELL # 2 ℹ️
0%
<4 µg/L
Below Reporting Level
6/4/2003
23 years ago
WELL #3
WELL #3 ℹ️
0%
<4 µg/L
Below Reporting Level
6/4/2003
23 years ago
WELL #4
WELL #4 ℹ️
0%
<4 µg/L
Below Reporting Level
6/4/2003
23 years ago
WELL #5
WELL #5 ℹ️
0%
<4 µg/L
Below Reporting Level
6/4/2003
23 years ago
WELL #6
WELL #6 ℹ️
0%
<4 µg/L
Below Reporting Level
6/4/2003
23 years ago
WELL #7
WELL #7 ℹ️
0%
<4 µg/L
Below Reporting Level
6/4/2003
23 years ago
WELL # 2 1
WELL # 2 ℹ️
0%
<4 µg/L
Below Reporting Level
11/20/2002
23 years ago
WELL #3
WELL #3 ℹ️
0%
<4 µg/L
Below Reporting Level
11/20/2002
23 years ago
WELL #4
WELL #4 ℹ️
0%
<4 µg/L
Below Reporting Level
11/20/2002
23 years ago
WELL #5
WELL #5 ℹ️
0%
<4 µg/L
Below Reporting Level
11/20/2002
23 years ago
WELL #6
WELL #6 ℹ️
0%
<4 µg/L
Below Reporting Level
11/20/2002
23 years ago
WELL #7
WELL #7 ℹ️
0%
<4 µg/L
Below Reporting Level
11/20/2002
23 years ago
Minimum Reporting Level: 4 µg/L
Reference Level: ?
Contaminant Details

perfluoro(2-ethoxyethane)sulfonic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluoro-3-methoxypropanoic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluoro-4-methoxybutanoic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorobutanesulfonic acid (20)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.09 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.09 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.09 µg/L
Below Reporting Level
11/19/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.09 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.09 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.09 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.09 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.09 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.09 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorobutanoic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
122%
0.0061 µg/L
⚠️ Exceeds Reporting Level of 0.005 µg/L by 0.0011 µg/L
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.005 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

perfluorodecanoic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorododecanoic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluoroheptanesulfonic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluoroheptanoic acid (20)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.01 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.01 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.01 µg/L
Below Reporting Level
11/19/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.01 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.01 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.01 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.01 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.01 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.01 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorohexanesulfonic acid (20)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorohexanoic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorononanoic acid (20)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.02 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.02 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.02 µg/L
Below Reporting Level
11/19/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.02 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.02 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.02 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.02 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.02 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.02 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluorooctanesulfonic acid (20)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.04 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.04 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.04 µg/L
Below Reporting Level
11/19/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.04 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.04 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.04 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.04 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.04 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.04 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluorooctanoic acid (20)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.02 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.02 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.02 µg/L
Below Reporting Level
11/19/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.02 µg/L
Below Reporting Level
11/19/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.02 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.02 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.02 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.02 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.02 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluoropentanesulfonic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.004 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluoropentanoic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
113.3%
0.0034 µg/L
⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0004 µg/L
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.003 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorotetradecanoic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.008 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.008 µg/L
Below Reporting Level
8/19/2024
25 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.008 µg/L
Below Reporting Level
8/19/2024
25 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.008 µg/L
Below Reporting Level
8/19/2024
25 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.008 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.008 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.008 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.008 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.008 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.008 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.008 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.008 µg/L
Reference Level: ?
Contaminant Details

perfluorotridecanoic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.007 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.007 µg/L
Below Reporting Level
8/19/2024
25 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.007 µg/L
Below Reporting Level
8/19/2024
25 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.007 µg/L
Below Reporting Level
8/19/2024
25 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.007 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.007 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.007 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.007 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.007 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.007 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.007 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.007 µg/L
Reference Level: ?
Contaminant Details

perfluoroundecanoic acid (11)

CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
12/4/2024
22 months ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
10/8/2024
24 months ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
10/8/2024
24 months ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
8/19/2024
25 months ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
6/5/2024
2 years ago
CC 1 ST CHARLES PWSD #2 MO6024530
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 3
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 6
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
2/28/2024
2 years ago
WELL # 4
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
2/28/2024
2 years ago
TREATMENT PLANT
OFALLON PWS ℹ️
0%
<0.002 µg/L
Below Reporting Level
2/28/2024
2 years ago
Minimum Reporting Level: 0.002 µg/L
Reference Level: ?
Contaminant Details

profenofos (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
12/26/2019
6 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.3 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.3 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
5/13/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.3 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.3 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.3 µg/L
Reference Level: 0.3 µg/L
Contaminant Details

quinoline (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.02 µg/L
Below Reporting Level
12/26/2019
6 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.02 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.02 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.02 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.02 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.02 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.02 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.02 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.02 µg/L
Reference Level: 0.01 µg/L
Contaminant Details

s-ethyl-dipropylthiocarbamate (EPTC) (12)

WELL # 2 1
WELL # 2 ℹ️
0%
<1 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #3
WELL #3 ℹ️
0%
<1 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #4
WELL #4 ℹ️
0%
<1 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #5
WELL #5 ℹ️
0%
<1 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #6
WELL #6 ℹ️
0%
<1 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #7
WELL #7 ℹ️
0%
<1 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL # 2 1
WELL # 2 ℹ️
0%
<1 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #3
WELL #3 ℹ️
0%
<1 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #4
WELL #4 ℹ️
0%
<1 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #5
WELL #5 ℹ️
0%
<1 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #6
WELL #6 ℹ️
0%
<1 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #7
WELL #7 ℹ️
0%
<1 µg/L
Below Reporting Level
11/12/2002
23 years ago
Minimum Reporting Level: 1 µg/L
Reference Level: ?
Contaminant Details

strontium (12)

Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
120666.7%
362 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 361.7 µg/L
6/4/2014
12 years ago
Well #3 EPTDS
Well #3 ℹ️
616666.7%
1850 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 1849.7 µg/L
11/20/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
227000%
681 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 680.7 µg/L
11/20/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
80000%
240 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 239.7 µg/L
11/20/2013
12 years ago
150 Firma Road
Distribution System ℹ️
22400%
67.2 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 66.9 µg/L
11/20/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
19733.3%
59.2 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 58.9 µg/L
11/20/2013
12 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
350000%
1050 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 1049.7 µg/L
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
314000%
942 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 941.7 µg/L
5/22/2013
13 years ago
Well #3 EPTDS
Well #3 ℹ️
253000%
759 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 758.7 µg/L
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
167666.7%
503 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 502.7 µg/L
5/22/2013
13 years ago
150 Firma Road
Distribution System ℹ️
42666.7%
128 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 127.7 µg/L
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
30833.3%
92.5 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 92.2 µg/L
5/22/2013
13 years ago
Minimum Reporting Level: 0.3 µg/L
Reference Level: ?
Contaminant Details

tebuconazole (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.2 µg/L
Below Reporting Level
12/26/2019
6 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.2 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.2 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.2 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/13/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.2 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: 190 µg/L
Contaminant Details

terbacil (12)

WELL # 2 1
WELL # 2 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #3
WELL #3 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #4
WELL #4 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #5
WELL #5 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #6
WELL #6 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL #7
WELL #7 ℹ️
0%
<2 µg/L
Below Reporting Level
5/20/2003
23 years ago
WELL # 2 1
WELL # 2 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #3
WELL #3 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #4
WELL #4 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #5
WELL #5 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #6
WELL #6 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
WELL #7
WELL #7 ℹ️
0%
<2 µg/L
Below Reporting Level
11/12/2002
23 years ago
Minimum Reporting Level: 2 µg/L
Reference Level: ?
Contaminant Details

total microcystins (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
6/18/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
6/3/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
5/21/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
5/7/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
4/16/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
4/3/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
3/19/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.3 µg/L
Below Reporting Level
3/6/2019
7 years ago
Minimum Reporting Level: 0.3 µg/L
Reference Level: ?
Contaminant Details

Total Permethrin (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.04 µg/L
Below Reporting Level
12/26/2019
6 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.04 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.04 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.04 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.04 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.04 µg/L
Below Reporting Level
5/13/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.04 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.04 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.04 µg/L
Reference Level: 3.344 µg/L
Contaminant Details

tribufos (8)

Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.07 µg/L
Below Reporting Level
12/26/2019
6 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.07 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.07 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.07 µg/L
Below Reporting Level
9/30/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.07 µg/L
Below Reporting Level
6/11/2019
7 years ago
Entry Point to the Dist. System
Connection from St. Charles ℹ️
0%
<0.07 µg/L
Below Reporting Level
5/13/2019
7 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.07 µg/L
Below Reporting Level
3/25/2019
7 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.07 µg/L
Below Reporting Level
3/25/2019
7 years ago
Minimum Reporting Level: 0.07 µg/L
Reference Level: 0.6 µg/L
Contaminant Details

vanadium (12)

Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.2 µg/L
Below Reporting Level
6/4/2014
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/20/2013
12 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/20/2013
12 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/20/2013
12 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/20/2013
12 years ago
150 Firma Road
Distribution System ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/20/2013
12 years ago
Well #3 EPTDS
Well #3 ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Well¿#6¿Treated ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #4 EPTDS
Well #4 ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Well #7 EPTDS
Well #7 ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Entry Point to the Dist. System
Treatment¿Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
150 Firma Road
Distribution System ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/22/2013
13 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: ?
Contaminant Details

Sampling Facilities

OFALLON PWS
Surface Water (SW)

CC 1 ST CHARLES PWSD #2 MO6024530Entry Point to the Distribution System (EP)

OFALLON PWS
Ground Water (GW)

WELL # 3Entry Point to the Distribution System (EP)

OFALLON PWS
Ground Water (GW)

WELL # 6Entry Point to the Distribution System (EP)

OFALLON PWS
Ground Water (GW)

WELL # 4Entry Point to the Distribution System (EP)

OFALLON PWS
Ground Water (GW)

TREATMENT PLANTEntry Point to the Distribution System (EP)

Well¿#6¿Treated
Ground Water (GW)

Entry Point to the Dist. SystemEntry Point to the Distribution System (EP)

Treatment¿Plant
Ground Water (GW)

Entry Point to the Dist. SystemEntry Point to the Distribution System (EP)

Connection from St. Charles
Surface Water (SW)

Entry Point to the Dist. SystemEntry Point to the Distribution System (EP)

Distribution System
Multiple Sources (MX)

601¿CannonballDistribution System (DS)
401¿Coolsprings¿Rd.Distribution System (DS)

Well #3
Ground Water (GW)

Well #3 EPTDSEntry Point to the Distribution System (EP)

Well #4
Ground Water (GW)

Well #4 EPTDSEntry Point to the Distribution System (EP)

Well #7
Ground Water (GW)

Well #7 EPTDSEntry Point to the Distribution System (EP)

Distribution System
Ground Water (GW)

150 Firma RoadMaximum Residence Time (MR)

WELL #3
Ground Water (GW)

WELL #3Entry Point to the Distribution System (EP)

WELL #4
Ground Water (GW)

WELL #4Entry Point to the Distribution System (EP)

WELL #5
Ground Water (GW)

WELL #5Entry Point to the Distribution System (EP)

WELL #6
Ground Water (GW)

WELL #6Entry Point to the Distribution System (EP)

WELL #7
Ground Water (GW)

WELL #7Entry Point to the Distribution System (EP)

RO Plant
Ground Water (GW)

RO PlantEntry Point to the Distribution System (EP)

WELL # 2
Ground Water (GW)

WELL # 2 1Entry Point to the Distribution System (EP)

FAQ

Is O'Fallon tap water safe to drink?

When was O'Fallon last tested for water contamination?

The latest water samples were taken on December 4th, 2024.