Golden State Water Company - Norwalk is a large public water system in EPA region 09 that provides tap water for the 90241, 90605, 90650 zip codes. It has 4 facilities where the water supply was tested for 20 chemical contaminants that impact tap water quality and human health.
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 Golden State Water Company - Norwalk showed levels of 1-butanol that were below unsafe concentration levels. Learn more about 1-butanol.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <2.0 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <2.0 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <2.0 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 5/11/2020 59 months ago
| <2.0 µg/L Below Reporting Level
|
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 Golden State Water Company - Norwalk showed levels of 2-methoxyethanol that were below unsafe concentration levels. Learn more about 2-methoxyethanol.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.4 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.4 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.4 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 5/11/2020 59 months ago
| <0.4 µg/L Below Reporting Level
|
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 Golden State Water Company - Norwalk showed levels of 2-propen-1-ol (Allyl Alcohol) that were below unsafe concentration levels. Learn more about 2-propen-1-ol (Allyl Alcohol).
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.5 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.5 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.5 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 5/11/2020 59 months ago
| <0.5 µg/L Below Reporting Level
|
alpha-hexachlorocyclohexane is a chemical contaminant that has a reference level of 0.006 µg/L. All the latest water samples for Golden State Water Company - Norwalk showed levels of alpha-hexachlorocyclohexane that were below unsafe concentration levels. Learn more about alpha-hexachlorocyclohexane.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.01 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.01 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.01 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 8/10/2020 56 months ago
| <0.01 µg/L Below Reporting Level
|
anatoxin-a is a chemical contaminant that is a potential threat to human health. Learn more about anatoxin-a.
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 8/24/2020 55 months ago
| <0.03 µg/L Below Reporting Level
|
|---|
Butylated Hydroxyanisole is a chemical contaminant that is a potential threat to human health. Learn more about Butylated Hydroxyanisole.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.03 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.03 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.03 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 5/11/2020 59 months ago
| <0.03 µg/L Below Reporting Level
|
chlorpyrifos is a chemical contaminant that has a reference level of 2 µg/L. All the latest water samples for Golden State Water Company - Norwalk showed levels of chlorpyrifos that were below unsafe concentration levels. Learn more about chlorpyrifos.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.03 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.03 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.03 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 8/10/2020 56 months ago
| <0.03 µg/L Below Reporting Level
|
cylindrospermopsin is a chemical contaminant that has a reference level of 0.7 µg/L. All the latest water samples for Golden State Water Company - Norwalk showed levels of cylindrospermopsin that were below unsafe concentration levels. Learn more about cylindrospermopsin.
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 8/24/2020 55 months ago
| <0.09 µg/L Below Reporting Level
|
|---|
dimethipin is a chemical contaminant that has a reference level of 140 µg/L. All the latest water samples for Golden State Water Company - Norwalk showed levels of dimethipin that were below unsafe concentration levels. Learn more about dimethipin.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.2 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.2 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.2 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 8/10/2020 56 months ago
| <0.2 µg/L Below Reporting Level
|
ethoprop is a chemical contaminant that has a reference level of 1.14 µg/L. All the latest water samples for Golden State Water Company - Norwalk showed levels of ethoprop that were below unsafe concentration levels. Learn more about ethoprop.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.03 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.03 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.03 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 8/10/2020 56 months ago
| <0.03 µg/L Below Reporting Level
|
Germanium is a chemical contaminant that is a potential threat to human health. Learn more about Germanium.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.3 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.3 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.3 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 5/11/2020 59 months ago
| <0.3 µg/L Below Reporting Level
|
Manganese is a chemical contaminant that has a reference level of 300 µg/L. All the latest water samples for Golden State Water Company - Norwalk showed levels of Manganese that were below unsafe concentration levels. The maximum reported value was 4.4 µg/L. Learn more about Manganese.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| 4.4 µg/L Meets Reporting Threshold
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| .77 µg/L Meets Reporting Threshold
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.4 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 5/11/2020 59 months ago
| .72 µg/L Meets Reporting Threshold
|
o-toluidine is a chemical contaminant that is a potential threat to human health. Learn more about o-toluidine.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.007 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.007 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.007 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 5/11/2020 59 months ago
| <0.007 µg/L Below Reporting Level
|
oxyfluorfen is a chemical contaminant that has a reference level of 200 µg/L. All the latest water samples for Golden State Water Company - Norwalk showed levels of oxyfluorfen that were below unsafe concentration levels. Learn more about oxyfluorfen.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.05 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.05 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.05 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 8/10/2020 56 months ago
| <0.05 µg/L Below Reporting Level
|
profenofos is a chemical contaminant that has a reference level of 0.3 µg/L. All the latest water samples for Golden State Water Company - Norwalk showed levels of profenofos that were below unsafe concentration levels. Learn more about profenofos.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.3 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.3 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.3 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 8/10/2020 56 months ago
| <0.3 µg/L Below Reporting Level
|
quinoline is a chemical contaminant that has a reference level of 0.01 µg/L. All the latest water samples for Golden State Water Company - Norwalk showed levels of quinoline that were below unsafe concentration levels. Learn more about quinoline.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.02 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.02 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.02 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 5/11/2020 59 months ago
| <0.02 µg/L Below Reporting Level
|
tebuconazole is a chemical contaminant that has a reference level of 190 µg/L. All the latest water samples for Golden State Water Company - Norwalk showed levels of tebuconazole that were below unsafe concentration levels. Learn more about tebuconazole.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.2 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.2 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.2 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 8/10/2020 56 months ago
| <0.2 µg/L Below Reporting Level
|
Total Microcystin is a chemical contaminant that has a reference level of 0.3 µg/L. All the latest water samples for Golden State Water Company - Norwalk showed levels of Total Microcystin that were below unsafe concentration levels. Learn more about Total Microcystin.
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 8/24/2020 55 months ago
| <0.3 µg/L Below Reporting Level
|
|---|
Total Permethrin is a chemical contaminant that has a reference level of 3.344 µg/L. All the latest water samples for Golden State Water Company - Norwalk showed levels of Total Permethrin that were below unsafe concentration levels. Learn more about Total Permethrin.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.04 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.04 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.04 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 8/10/2020 56 months ago
| <0.04 µg/L Below Reporting Level
|
tribufos is a chemical contaminant that has a reference level of 0.6 µg/L. All the latest water samples for Golden State Water Company - Norwalk showed levels of tribufos that were below unsafe concentration levels. Learn more about tribufos.
| Pioneer Well 3 EP Pioneer Well 3
| 2/5/2020 62 months ago
| <0.07 µg/L Below Reporting Level
|
|---|---|---|
| Dace Plant EP Dace Plant
| 2/4/2020 62 months ago
| <0.07 µg/L Below Reporting Level
|
| Pioneer Wells 1 & 2 EP Pioneer Wells 1 & 2
| 2/4/2020 62 months ago
| <0.07 µg/L Below Reporting Level
|
| EPTDS from MWD (CB-35 EP) MWD Intertie
| 8/10/2020 56 months ago
| <0.07 µg/L Below Reporting Level
|
| Facility Name | Water Type/Source |
|---|---|
| Pioneer Well 3 | Ground Water (GW) |
| Dace Plant | Ground Water (GW) |
| Pioneer Wells 1 & 2 | Ground Water (GW) |
| MWD Intertie | Surface Water (SW) |
The latest water samples were taken between February 4th, 2020 and August 24th, 2020.