West Valley Water District (CA) Water Quality

West Valley Water District is a large public water system in EPA region 09 that provides tap water for the 92316, 92337, 92377 zip codes. It has 19 facilities where the water supply was tested for 23 chemical contaminants that impact tap water quality and human health.

Contaminants

1-butanol

1-butanol is a class of Alcohol that has a minimum reporting level of 2 µg/L and a reference level of 700 µg/L. All the latest water samples for West Valley Water District showed levels of 1-butanol that were below unsafe concentration levels. Learn more about 1-butanol.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<2.0 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<2.0 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<2.0 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<2.0 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<2.0 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<2.0 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<2.0 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<2.0 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<2.0 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<2.0 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<2.0 µg/L
Below Reporting Level

2-methoxyethanol

2-methoxyethanol is a class of Alcohol that has a minimum reporting level of 0.4 µg/L and a reference level of 21 µg/L. All the latest water samples for West Valley Water District showed levels of 2-methoxyethanol that were below unsafe concentration levels. Learn more about 2-methoxyethanol.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.4 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.4 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.4 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.4 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.4 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.4 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.4 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.4 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.4 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.4 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.4 µg/L
Below Reporting Level

2-propen-1-ol (Allyl Alcohol)

2-propen-1-ol (Allyl Alcohol) is a class of Alcohol that has a minimum reporting level of 0.5 µg/L and a reference level of 35 µg/L. All the latest water samples for West Valley Water District showed levels of 2-propen-1-ol (Allyl Alcohol) that were below unsafe concentration levels. Learn more about 2-propen-1-ol (Allyl Alcohol).

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.5 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.5 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.5 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.5 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.5 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.5 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.5 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.5 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.5 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.5 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.5 µg/L
Below Reporting Level

HAA5 (five regulated haloacetic acids)

HAA5 (five regulated haloacetic acids) are a class of Disinfection Byproducts that includes Dibromoacetic Acid, Dichloroacetic Acid, Monobromoacetic Acid, Monochloroacetic Acid, Trichloroacetic Acid and has a minimum reporting level of 0.5 µg/L and a reference level of 60 µg/L. All the latest water samples for West Valley Water District showed levels of HAA5 (five regulated haloacetic acids) that were below unsafe concentration levels. The maximum reported value was 21.2 µg/L. Learn more about HAA5 (five regulated haloacetic acids).

21.2µg/L
213 E. Walnut
213 E. Walnut
7/16/2018
80 months ago
.29 µg/L
Meets Reporting Threshold
3750 Lytle Creek Road
3750 Lytle Creek Road
10/16/2018
76 months ago
12.9 µg/L
Meets Reporting Threshold
15182 Crane
15182 Crane
7/16/2018
80 months ago
21.2 µg/L
Meets Reporting Threshold
White Ash Road
White Ash Road
10/16/2018
76 months ago
9.2 µg/L
Meets Reporting Threshold
Reservoir 6-3 Discharge Line
Reservoir 6-3 Discharge Line
10/16/2018
76 months ago
8.3 µg/L
Meets Reporting Threshold
18433 Bohnert
18433 Bohnert
10/16/2018
76 months ago
12.6 µg/L
Meets Reporting Threshold
Via Montana and Via Bonita
Via Montana and Via Bonita
7/17/2018
79 months ago
.83 µg/L
Meets Reporting Threshold
Hall and Kinningham
Hall and Kinningham
7/17/2018
79 months ago
0 µg/L
Meets Reporting Threshold

HAA6Br (six brominated haloacetic acids)

HAA6Br (six brominated haloacetic acids) are a class of Disinfection Byproducts that includes Bromochloroacetic Acid, Bromodichloroacetic Acid, Dibromoacetic Acid, Dibromochloroacetic Acid, Monobromoacetic Acid, Tribromoacetic Acid and has a minimum reporting level of 0 µg/L and is a potential threat to human health. Learn more about HAA6Br (six brominated haloacetic acids).

213 E. Walnut
213 E. Walnut
7/16/2018
80 months ago
0 µg/L
3750 Lytle Creek Road
3750 Lytle Creek Road
10/16/2018
76 months ago
16.6 µg/L
15182 Crane
15182 Crane
7/16/2018
80 months ago
27.8 µg/L
White Ash Road
White Ash Road
10/16/2018
76 months ago
19.6 µg/L
Reservoir 6-3 Discharge Line
Reservoir 6-3 Discharge Line
10/16/2018
76 months ago
16.8 µg/L
18433 Bohnert
18433 Bohnert
10/16/2018
76 months ago
27.2 µg/L
Via Montana and Via Bonita
Via Montana and Via Bonita
7/17/2018
79 months ago
.83 µg/L
Hall and Kinningham
Hall and Kinningham
7/17/2018
79 months ago
0 µg/L

HAA9 (nine haloacetic acids)

HAA9 (nine haloacetic acids) are a class of Disinfection Byproducts that includes Bromochloroacetic Acid, Bromodichloroacetic Acid, Chlorodibromoacetic Acid, Dibromoacetic Acid, Dichloroacetic Acid, Monobromoacetic Acid, Monochloroacetic Acid, Tribromoacetic Acid, Trichloroacetic Acid and has a minimum reporting level of 0 µg/L and is a potential threat to human health. Learn more about HAA9 (nine haloacetic acids).

213 E. Walnut
213 E. Walnut
7/16/2018
80 months ago
.29 µg/L
3750 Lytle Creek Road
3750 Lytle Creek Road
10/16/2018
76 months ago
25.9 µg/L
15182 Crane
15182 Crane
7/16/2018
80 months ago
41.3 µg/L
White Ash Road
White Ash Road
10/16/2018
76 months ago
23.5 µg/L
Reservoir 6-3 Discharge Line
Reservoir 6-3 Discharge Line
10/16/2018
76 months ago
20.6 µg/L
18433 Bohnert
18433 Bohnert
10/16/2018
76 months ago
32 µg/L
Via Montana and Via Bonita
Via Montana and Via Bonita
7/17/2018
79 months ago
1.34 µg/L
Hall and Kinningham
Hall and Kinningham
7/17/2018
79 months ago
0 µg/L

alpha-hexachlorocyclohexane

alpha-hexachlorocyclohexane is a chemical contaminant that has a reference level of 0.006 µg/L. All the latest water samples for West Valley Water District showed levels of alpha-hexachlorocyclohexane that were below unsafe concentration levels. Learn more about alpha-hexachlorocyclohexane.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.01 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.01 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.01 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.01 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.01 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.01 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.01 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.01 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.01 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.01 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.01 µg/L
Below Reporting Level

anatoxin-a

anatoxin-a is a chemical contaminant that is a potential threat to human health. Learn more about anatoxin-a.

EP #36 - 5-3 Reservoir
Roemer WTP
7/16/2018
80 months ago
<0.03 µg/L
Below Reporting Level

Butylated Hydroxyanisole

Butylated Hydroxyanisole is a chemical contaminant that is a potential threat to human health. Learn more about Butylated Hydroxyanisole.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.03 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.03 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.03 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.03 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.03 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.03 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.03 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.03 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.03 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.03 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.03 µg/L
Below Reporting Level

chlorpyrifos

chlorpyrifos is a chemical contaminant that has a reference level of 2 µg/L. All the latest water samples for West Valley Water District showed levels of chlorpyrifos that were below unsafe concentration levels. Learn more about chlorpyrifos.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.03 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.03 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.03 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.03 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.03 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.03 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.03 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.03 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.03 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.03 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.03 µg/L
Below Reporting Level

cylindrospermopsin

cylindrospermopsin is a chemical contaminant that has a reference level of 0.7 µg/L. All the latest water samples for West Valley Water District showed levels of cylindrospermopsin that were below unsafe concentration levels. Learn more about cylindrospermopsin.

EP #36 - 5-3 Reservoir
Roemer WTP
7/16/2018
80 months ago
<0.09 µg/L
Below Reporting Level

dimethipin

dimethipin is a chemical contaminant that has a reference level of 140 µg/L. All the latest water samples for West Valley Water District showed levels of dimethipin that were below unsafe concentration levels. Learn more about dimethipin.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.2 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.2 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.2 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.2 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.2 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.2 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.2 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.2 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.2 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.2 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.2 µg/L
Below Reporting Level

ethoprop

ethoprop is a chemical contaminant that has a reference level of 1.14 µg/L. All the latest water samples for West Valley Water District showed levels of ethoprop that were below unsafe concentration levels. Learn more about ethoprop.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.03 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.03 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.03 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.03 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.03 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.03 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.03 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.03 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.03 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.03 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.03 µg/L
Below Reporting Level

Germanium

Germanium is a chemical contaminant that is a potential threat to human health. Learn more about Germanium.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.3 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.3 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.3 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.3 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.3 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.3 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.3 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.3 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.3 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.3 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.3 µg/L
Below Reporting Level

Manganese

Manganese is a chemical contaminant that has a reference level of 300 µg/L. All the latest water samples for West Valley Water District showed levels of Manganese that were below unsafe concentration levels. The maximum reported value was 11 µg/L. Learn more about Manganese.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
.47 µg/L
Meets Reporting Threshold
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.4 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.4 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.4 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.4 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
1.7 µg/L
Meets Reporting Threshold
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
11 µg/L
Meets Reporting Threshold
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.4 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
6.9 µg/L
Meets Reporting Threshold
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.4 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.4 µg/L
Below Reporting Level

o-toluidine

o-toluidine is a chemical contaminant that is a potential threat to human health. Learn more about o-toluidine.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.007 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.007 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.007 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.007 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.007 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.007 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.007 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.007 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.007 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.007 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.007 µg/L
Below Reporting Level

oxyfluorfen

oxyfluorfen is a chemical contaminant that has a reference level of 200 µg/L. All the latest water samples for West Valley Water District showed levels of oxyfluorfen that were below unsafe concentration levels. Learn more about oxyfluorfen.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.05 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.05 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.05 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.05 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.05 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.05 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.05 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.05 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.05 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.05 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.05 µg/L
Below Reporting Level

profenofos

profenofos is a chemical contaminant that has a reference level of 0.3 µg/L. All the latest water samples for West Valley Water District showed levels of profenofos that were below unsafe concentration levels. Learn more about profenofos.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.3 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.3 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.3 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.3 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.3 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.3 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.3 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.3 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.3 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.3 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.3 µg/L
Below Reporting Level

quinoline

quinoline is a chemical contaminant that has a reference level of 0.01 µg/L. All the latest water samples for West Valley Water District showed levels of quinoline that were below unsafe concentration levels. Learn more about quinoline.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.02 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.02 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.02 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.02 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.02 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.02 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.02 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.02 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.02 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.02 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.02 µg/L
Below Reporting Level

tebuconazole

tebuconazole is a chemical contaminant that has a reference level of 190 µg/L. All the latest water samples for West Valley Water District showed levels of tebuconazole that were below unsafe concentration levels. Learn more about tebuconazole.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.2 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.2 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.2 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.2 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.2 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.2 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.2 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.2 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.2 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.2 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.2 µg/L
Below Reporting Level

Total Microcystin

Total Microcystin is a chemical contaminant that has a reference level of 0.3 µg/L. All the latest water samples for West Valley Water District showed levels of Total Microcystin that were below unsafe concentration levels. Learn more about Total Microcystin.

EP #36 - 5-3 Reservoir
Roemer WTP
7/16/2018
80 months ago
<0.3 µg/L
Below Reporting Level

Total Permethrin

Total Permethrin is a chemical contaminant that has a reference level of 3.344 µg/L. All the latest water samples for West Valley Water District showed levels of Total Permethrin that were below unsafe concentration levels. Learn more about Total Permethrin.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.04 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.04 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.04 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.04 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.04 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.04 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.04 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.04 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.04 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.04 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.04 µg/L
Below Reporting Level

tribufos

tribufos is a chemical contaminant that has a reference level of 0.6 µg/L. All the latest water samples for West Valley Water District showed levels of tribufos that were below unsafe concentration levels. Learn more about tribufos.

EP #46 - Well 54
Well 54
1/8/2020
61 months ago
<0.07 µg/L
Below Reporting Level
EP #36 - 5-3 Reservoir
Roemer WTP
10/16/2018
76 months ago
<0.07 µg/L
Below Reporting Level
EP #43 - Lytle Basin Well 4A
Well 4A
7/12/2018
80 months ago
<0.07 µg/L
Below Reporting Level
EP #42 - Lytle Basin Well 8A
Well 8A
1/8/2020
61 months ago
<0.07 µg/L
Below Reporting Level
EP #18 - Rialto Basin Well 24
Well 24
11/12/2019
63 months ago
<0.07 µg/L
Below Reporting Level
EP #24 - 3A PS Bunker Hill Basin
Well 30
7/12/2018
80 months ago
<0.07 µg/L
Below Reporting Level
EP #37 - Rialto Basin Well 23A ID 3610004037
Well 16
12/2/2020
51 months ago
<0.07 µg/L
Below Reporting Level
EP #33 - Rialto Basin Well 33
Well 33
11/12/2019
63 months ago
<0.07 µg/L
Below Reporting Level
9th Street Sample Station 48" Line
Baseline Feeder
7/12/2018
80 months ago
<0.07 µg/L
Below Reporting Level
Effluent Tap on Perchlorate System
Well 17
7/13/2018
80 months ago
<0.07 µg/L
Below Reporting Level
Effluent Sample Tap on Perchlorate System
Well 42
7/12/2018
80 months ago
<0.07 µg/L
Below Reporting Level

Sampling Facilities

Facility NameWater Type/Source
Well 54Ground Water (GW)
Roemer WTPSurface Water (SW)
Well 4AGround Water (GW)
Well 8AGround Water (GW)
Well 24Ground Water (GW)
Well 30Ground Water (GW)
Well 16Ground Water (GW)
Well 33Ground Water (GW)
Baseline FeederGround Water (GW)
213 E. WalnutGround Water (GW)
3750 Lytle Creek RoadMultiple sources (MX)
15182 CraneGround Water (GW)
White Ash RoadMultiple sources (MX)
Reservoir 6-3 Discharge LineMultiple sources (MX)
18433 BohnertMultiple sources (MX)
Via Montana and Via BonitaGround Water (GW)
Hall and KinninghamGround Water (GW)
Well 17Ground Water (GW)
Well 42Ground Water (GW)

FAQ

Is West Valley Water District tap water safe to drink?

When was West Valley Water District last tested for water contamination?

The latest water samples were taken between July 12th, 2018 and December 2nd, 2020.