Texas State University - San Marcos (TX) Water Quality

Texas State University - San Marcos is a large public water system in EPA region 6 that provides tap water for the 78666 zip codes. It has 5 facilities where the water supply was tested for 75 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 4.901 µg/L. There were 1 contamintants found in the Texas State University - San Marcos water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (2)

Sample Tap
Wells 1 & 2 ℹ️
0%
<0.03 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.03 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: ?
Contaminant Details

1,2,3-trichloropropane (2)

Sample Tap
Wells 1 & 2 ℹ️
0%
<0.03 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.03 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: ?
Contaminant Details

1,3-butadiene (2)

Sample Tap
Wells 1 & 2 ℹ️
0%
<0.1 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.1 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.1 µg/L
Reference Level: ?
Contaminant Details

1,4-dioxane (2)

Sample Tap
Wells 1 & 2 ℹ️
0%
<0.07 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.07 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.07 µg/L
Reference Level: ?
Contaminant Details

1-butanol (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<2 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<2 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 2 µg/L
Reference Level: 700 µg/L
Contaminant Details

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.005 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

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

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.005 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

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

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

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

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.005 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

2,4-dinitrotoluene (2)

WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<2 µg/L
Below Reporting Level
9/16/2003
22 years ago
WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<2 µg/L
Below Reporting Level
3/18/2003
22 years ago
Minimum Reporting Level: 2 µg/L
Reference Level: ?
Contaminant Details

2,6-dinitrotoluene (2)

WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<2 µg/L
Below Reporting Level
9/16/2003
22 years ago
WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<2 µg/L
Below Reporting Level
3/18/2003
22 years ago
Minimum Reporting Level: 2 µg/L
Reference Level: ?
Contaminant Details

2-methoxyethanol (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.4 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.4 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.4 µg/L
Reference Level: 21 µg/L
Contaminant Details

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

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.5 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.5 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.5 µg/L
Reference Level: 35 µg/L
Contaminant Details

4,4'-dichloro dichlorophenyl ethylene (DDE) (2)

WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<0.8 µg/L
Below Reporting Level
9/16/2003
22 years ago
WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<0.8 µg/L
Below Reporting Level
3/18/2003
22 years ago
Minimum Reporting Level: 0.8 µg/L
Reference Level: ?
Contaminant Details

4,8-dioxa-3H-perfluorononanoic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.002 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.002 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.002 µg/L
Reference Level: ?
Contaminant Details

alpha-hexachlorocyclohexane (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.01 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.01 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.01 µg/L
Reference Level: 0.006 µg/L
Contaminant Details

bromochloromethane (Halon 1011) (2)

Sample Tap
Wells 1 & 2 ℹ️
0%
<0.06 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.06 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.06 µg/L
Reference Level: ?
Contaminant Details

bromomethane (2)

Sample Tap
Wells 1 & 2 ℹ️
0%
<0.2 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.2 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: ?
Contaminant Details

Butylated Hydroxyanisole (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: ?
Contaminant Details

chlorate (4)

Sample Tap
Wells 1 & 2 ℹ️
237.5%
47.5 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 27.5 µg/L
8/15/2013
12 years ago
Max. Res. Time in Dist. System
Distribution System ℹ️
230%
46 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 26 µg/L
8/15/2013
12 years ago
Max. Res. Time in Dist. System
Distribution System ℹ️
745%
149 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 129 µg/L
2/21/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
715%
143 µg/L
⚠️ Exceeds Reporting Level of 20 µg/L by 123 µg/L
2/21/2013
12 years ago
Minimum Reporting Level: 20 µg/L
Reference Level: ?
Contaminant Details

chlorodifluoromethane (HCFC-22) (2)

Sample Tap
Wells 1 & 2 ℹ️
0%
<0.08 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.08 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.08 µg/L
Reference Level: ?
Contaminant Details

chloromethane (2)

Sample Tap
Wells 1 & 2 ℹ️
0%
<0.2 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.2 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: ?
Contaminant Details

chlorpyrifos (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: 2 µg/L
Contaminant Details

chromium (4)

Max. Res. Time in Dist. System
Distribution System ℹ️
0%
<0.2 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.2 µg/L
Below Reporting Level
8/15/2013
12 years ago
Max. Res. Time in Dist. System
Distribution System ℹ️
0%
<0.2 µg/L
Below Reporting Level
2/21/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.2 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: ?
Contaminant Details

chromium-6 (4)

Max. Res. Time in Dist. System
Distribution System ℹ️
250.7%
0.0752 µg/L
⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0452 µg/L
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
189%
0.0567 µg/L
⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0267 µg/L
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
205.3%
0.0616 µg/L
⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0316 µg/L
2/21/2013
12 years ago
Max. Res. Time in Dist. System
Distribution System ℹ️
193.7%
0.0581 µg/L
⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0281 µg/L
2/21/2013
12 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: ?
Contaminant Details

cobalt (4)

Max. Res. Time in Dist. System
Distribution System ℹ️
0%
<1 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<1 µg/L
Below Reporting Level
8/15/2013
12 years ago
Max. Res. Time in Dist. System
Distribution System ℹ️
0%
<1 µg/L
Below Reporting Level
2/21/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<1 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 1 µg/L
Reference Level: ?
Contaminant Details

dimethipin (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: 140 µg/L
Contaminant Details

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (2)

WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<1 µg/L
Below Reporting Level
9/16/2003
22 years ago
WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<1 µg/L
Below Reporting Level
3/18/2003
22 years ago
Minimum Reporting Level: 1 µg/L
Reference Level: ?
Contaminant Details

ethoprop (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.03 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.03 µg/L
Reference Level: 1.14 µg/L
Contaminant Details

Germanium (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.3 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.3 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.3 µg/L
Reference Level: ?
Contaminant Details

HAA5 (five regulated haloacetic acids) (8)

SRC (1011 Academy Street)
Distribution System ℹ️
3.4%
2.064 µg/L
Meets Reporting Threshold
11/14/2019
6 years ago
Jowers Center (700 Aquarena)
Distribution System ℹ️
3.2%
1.926 µg/L
Meets Reporting Threshold
11/14/2019
6 years ago
Colorado (207 Pleasant Street)
Distribution System ℹ️
2.7%
1.611 µg/L
Meets Reporting Threshold
11/14/2019
6 years ago
Bexar Hall (100 Llano Circle)
Distribution System ℹ️
1.4%
0.816 µg/L
Meets Reporting Threshold
11/14/2019
6 years ago
Jowers Center (700 Aquarena)
Distribution System ℹ️
8.2%
4.901 µg/L
Meets Reporting Threshold
5/28/2019
6 years ago
SRC (1011 Academy Street)
Distribution System ℹ️
4.6%
2.768 µg/L
Meets Reporting Threshold
5/28/2019
6 years ago
Bexar Hall (100 Llano Circle)
Distribution System ℹ️
3.9%
2.339 µg/L
Meets Reporting Threshold
5/28/2019
6 years ago
Colorado (207 Pleasant Street)
Distribution System ℹ️
2.5%
1.48 µg/L
Meets Reporting Threshold
5/28/2019
6 years ago
Minimum Reporting Level: 0.5 µg/L
Reference Level: 60 µg/L
Contaminant Details

HAA6Br (six brominated haloacetic acids) (8)

SRC (1011 Academy Street)
Distribution System ℹ️
0%
8.615 µg/L
11/14/2019
6 years ago
Jowers Center (700 Aquarena)
Distribution System ℹ️
0%
8.25 µg/L
11/14/2019
6 years ago
Colorado (207 Pleasant Street)
Distribution System ℹ️
0%
6.973 µg/L
11/14/2019
6 years ago
Bexar Hall (100 Llano Circle)
Distribution System ℹ️
0%
4.451 µg/L
11/14/2019
6 years ago
Jowers Center (700 Aquarena)
Distribution System ℹ️
0%
7.087 µg/L
5/28/2019
6 years ago
SRC (1011 Academy Street)
Distribution System ℹ️
0%
3.819 µg/L
5/28/2019
6 years ago
Bexar Hall (100 Llano Circle)
Distribution System ℹ️
0%
3.238 µg/L
5/28/2019
6 years ago
Colorado (207 Pleasant Street)
Distribution System ℹ️
0%
1.566 µg/L
5/28/2019
6 years ago
Minimum Reporting Level: 0 µg/L
Reference Level: ?
Contaminant Details

HAA9 (nine haloacetic acids) (8)

SRC (1011 Academy Street)
Distribution System ℹ️
0%
8.989 µg/L
11/14/2019
6 years ago
Jowers Center (700 Aquarena)
Distribution System ℹ️
0%
8.646 µg/L
11/14/2019
6 years ago
Colorado (207 Pleasant Street)
Distribution System ℹ️
0%
7.294 µg/L
11/14/2019
6 years ago
Bexar Hall (100 Llano Circle)
Distribution System ℹ️
0%
4.451 µg/L
11/14/2019
6 years ago
Jowers Center (700 Aquarena)
Distribution System ℹ️
0%
7.7 µg/L
5/28/2019
6 years ago
SRC (1011 Academy Street)
Distribution System ℹ️
0%
4.567 µg/L
5/28/2019
6 years ago
Bexar Hall (100 Llano Circle)
Distribution System ℹ️
0%
3.907 µg/L
5/28/2019
6 years ago
Colorado (207 Pleasant Street)
Distribution System ℹ️
0%
1.786 µg/L
5/28/2019
6 years ago
Minimum Reporting Level: 0 µg/L
Reference Level: ?
Contaminant Details

hexafluoropropylene oxide dimer acid (GenX) (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.005 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

lithium (2)

Entry Point to Dist. System
Treatment Plant ℹ️
105.6%
9.5 µg/L
⚠️ Exceeds Reporting Level of 9 µg/L by 0.5 µg/L
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<9 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 9 µg/L
Reference Level: ?
Contaminant Details

Manganese (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.4 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.4 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.4 µg/L
Reference Level: 300 µg/L
Contaminant Details

methyl-tertiary-butyl-ether (MTBE) (2)

WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<5 µg/L
Below Reporting Level
9/16/2003
22 years ago
WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<5 µg/L
Below Reporting Level
3/18/2003
22 years ago
Minimum Reporting Level: 5 µg/L
Reference Level: ?
Contaminant Details

molinate (2)

WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<0.9 µg/L
Below Reporting Level
9/16/2003
22 years ago
WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<0.9 µg/L
Below Reporting Level
3/18/2003
22 years ago
Minimum Reporting Level: 0.9 µg/L
Reference Level: ?
Contaminant Details

molybdenum (4)

Max. Res. Time in Dist. System
Distribution System ℹ️
0%
<1 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<1 µg/L
Below Reporting Level
8/15/2013
12 years ago
Max. Res. Time in Dist. System
Distribution System ℹ️
0%
<1 µg/L
Below Reporting Level
2/21/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<1 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 1 µg/L
Reference Level: ?
Contaminant Details

N-ethyl perfluorooctanesulfonamidoacetic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.005 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

N-methyl perfluorooctanesulfonamidoacetic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.006 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.006 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.006 µg/L
Reference Level: ?
Contaminant Details

nitrobenzene (2)

WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<10 µg/L
Below Reporting Level
9/16/2003
22 years ago
WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<10 µg/L
Below Reporting Level
3/18/2003
22 years ago
Minimum Reporting Level: 10 µg/L
Reference Level: ?
Contaminant Details

nonafluoro-3,6-dioxaheptanoic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.02 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.02 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.02 µg/L
Reference Level: ?
Contaminant Details

o-toluidine (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.007 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.007 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.007 µg/L
Reference Level: ?
Contaminant Details

oxyfluorfen (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.05 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.05 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.05 µg/L
Reference Level: 200 µg/L
Contaminant Details

perchlorate (2)

WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<4 µg/L
Below Reporting Level
9/16/2003
22 years ago
WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<4 µg/L
Below Reporting Level
3/18/2003
22 years ago
Minimum Reporting Level: 4 µg/L
Reference Level: ?
Contaminant Details

perfluoro(2-ethoxyethane)sulfonic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluoro-3-methoxypropanoic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.004 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluoro-4-methoxybutanoic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorobutanesulfonic acid (4)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/17/2024
14 months ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.09 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.09 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorobutanoic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.005 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.005 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.005 µg/L
Reference Level: ?
Contaminant Details

perfluorodecanoic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorododecanoic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluoroheptanesulfonic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluoroheptanoic acid (4)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/17/2024
14 months ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.01 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.01 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorohexanesulfonic acid (4)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/17/2024
14 months ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.03 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.03 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorohexanoic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorononanoic acid (4)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.004 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/17/2024
14 months ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.02 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.02 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluorooctanesulfonic acid (4)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.004 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/17/2024
14 months ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.04 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.04 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluorooctanoic acid (4)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.004 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/17/2024
14 months ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.02 µg/L
Below Reporting Level
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
0%
<0.02 µg/L
Below Reporting Level
2/21/2013
12 years ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluoropentanesulfonic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.004 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.004 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.004 µg/L
Reference Level: ?
Contaminant Details

perfluoropentanoic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.003 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.003 µg/L
Reference Level: ?
Contaminant Details

perfluorotetradecanoic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.008 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.008 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.008 µg/L
Reference Level: ?
Contaminant Details

perfluorotridecanoic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.007 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.007 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.007 µg/L
Reference Level: ?
Contaminant Details

perfluoroundecanoic acid (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.002 µg/L
Below Reporting Level
4/9/2025
8 months ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.002 µg/L
Below Reporting Level
10/17/2024
14 months ago
Minimum Reporting Level: 0.002 µg/L
Reference Level: ?
Contaminant Details

profenofos (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.3 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.3 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.3 µg/L
Reference Level: 0.3 µg/L
Contaminant Details

quinoline (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.02 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.02 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.02 µg/L
Reference Level: 0.01 µg/L
Contaminant Details

s-ethyl-dipropylthiocarbamate (EPTC) (2)

WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<1 µg/L
Below Reporting Level
9/16/2003
22 years ago
WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<1 µg/L
Below Reporting Level
3/18/2003
22 years ago
Minimum Reporting Level: 1 µg/L
Reference Level: ?
Contaminant Details

strontium (4)

Sample Tap
Wells 1 & 2 ℹ️
177000%
531 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 530.7 µg/L
8/15/2013
12 years ago
Max. Res. Time in Dist. System
Distribution System ℹ️
174333.3%
523 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 522.7 µg/L
8/15/2013
12 years ago
Max. Res. Time in Dist. System
Distribution System ℹ️
168333.3%
505 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 504.7 µg/L
2/21/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
163666.7%
491 µg/L
⚠️ Exceeds Reporting Level of 0.3 µg/L by 490.7 µg/L
2/21/2013
12 years ago
Minimum Reporting Level: 0.3 µg/L
Reference Level: ?
Contaminant Details

tebuconazole (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.2 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: 190 µg/L
Contaminant Details

terbacil (2)

WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<2 µg/L
Below Reporting Level
9/16/2003
22 years ago
WELL_1_&_2
WELL 1 & 2 ℹ️
0%
<2 µg/L
Below Reporting Level
3/18/2003
22 years ago
Minimum Reporting Level: 2 µg/L
Reference Level: ?
Contaminant Details

Total Permethrin (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.04 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.04 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.04 µg/L
Reference Level: 3.344 µg/L
Contaminant Details

tribufos (2)

Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.07 µg/L
Below Reporting Level
11/14/2019
6 years ago
Entry Point to Dist. System
Treatment Plant ℹ️
0%
<0.07 µg/L
Below Reporting Level
5/28/2019
6 years ago
Minimum Reporting Level: 0.07 µg/L
Reference Level: 0.6 µg/L
Contaminant Details

vanadium (4)

Sample Tap
Wells 1 & 2 ℹ️
1095%
2.19 µg/L
⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.99 µg/L
8/15/2013
12 years ago
Max. Res. Time in Dist. System
Distribution System ℹ️
1085%
2.17 µg/L
⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.97 µg/L
8/15/2013
12 years ago
Sample Tap
Wells 1 & 2 ℹ️
1015%
2.03 µg/L
⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.83 µg/L
2/21/2013
12 years ago
Max. Res. Time in Dist. System
Distribution System ℹ️
1005%
2.01 µg/L
⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.81 µg/L
2/21/2013
12 years ago
Minimum Reporting Level: 0.2 µg/L
Reference Level: ?
Contaminant Details

Sampling Facilities

Treatment Plant
Ground Water (GW)

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

Distribution System
Ground Water (GW)

Bexar Hall (100 Llano Circle)Distribution System (DS)
SRC (1011 Academy Street)Distribution System (DS)
Jowers Center (700 Aquarena)Distribution System (DS)
Colorado (207 Pleasant Street)Distribution System (DS)

Distribution System
Ground Water (GW)

Max. Res. Time in Dist. SystemMaximum Residence Time (MR)

Wells 1 & 2
Ground Water (GW)

Sample TapEntry Point to the Distribution System (EP)

WELL 1 & 2
Ground Water (GW)

WELL_1_&_2Entry Point to the Distribution System (EP)

FAQ

Is Texas State University - San Marcos tap water safe to drink?

When was Texas State University - San Marcos last tested for water contamination?

The latest water samples were taken on April 9th, 2025.