Toxaphene
Golden State Water Company (GSWC) - Claremont
NOTE: Golden State Water Company (GSWC) - Claremont purchases water from Three Valleys Municipal Water District which is required to test for toxaphene. Sample information shown below was taken by Three Valleys Municipal Water District.
Toxaphene is a neurotoxic, persistent and bioaccumulative insecticide classified by the EPA as a probable human carcinogen.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 10 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 12 | 0 | ND |
| 2021 | ND | 13 | 0 | ND |
| 2022 | ND | 6 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.03 ppb
The EWG Health Guideline of 0.03 ppb for toxaphene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
EPA Maximum Contaminant
Level (MCL): 3 ppb
The legal limit for toxaphene, established in 1991, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to toxaphene exposure.
ppb = parts per billion
All test results
NOTE: Golden State Water Company (GSWC) - Claremont purchases water from Three Valleys Municipal Water District which is required to test for toxaphene. Sample information shown below was taken by Three Valleys Municipal Water District.
| Date | Lab ID | Result |
|---|---|---|
| 2018-04-18 | CA1910041_002_002-201804180824 | ND |
| 2018-06-12 | CA1910041_004_004-20180612NUL | ND |
| 2018-06-12 | CA1910041_005_005-201806121030 | ND |
| 2018-06-12 | CA1910041_001_001-201806120850 | ND |
| 2018-09-11 | CA1910041_002_002-201809111045 | ND |
| 2019-04-16 | CA1910041_002_002-201904160925 | ND |
| 2019-09-17 | CA1910041_002_002-201909171005 | ND |
| 2020-03-17 | CA1910041_001_001-202003170815 | ND |
| 2020-03-31 | CA1910041_005_005-20200331NUL | ND |
| 2020-03-31 | CA1910041_004_004-20200331NUL | ND |
| 2020-04-21 | CA1910041_002_002-202004211000 | ND |
| 2020-06-16 | CA1910041_004_004-202006160933 | ND |
| 2020-06-16 | CA1910041_005_005-202006160953 | ND |
| 2020-06-16 | CA1910041_001_001-202006161000 | ND |
| 2020-07-09 | CA1910041_007_007-202007090800 | ND |
| 2020-09-15 | CA1910041_004_004-202009150930 | ND |
| 2020-09-15 | CA1910041_005_005-202009150935 | ND |
| 2020-09-22 | CA1910041_002_002-202009220730 | ND |
| 2020-12-08 | CA1910041_009_009-202012080356 | ND |
| 2021-03-16 | CA1910041_001_001-202103160830 | ND |
| 2021-03-16 | CA1910041_007_007-202103160930 | ND |
| 2021-04-13 | CA1910041_002_002-202104130845 | ND |
| 2021-06-16 | CA1910041_007_007-202106160930 | ND |
| 2021-09-21 | CA1910041_007_007-202109210815 | ND |
| 2021-09-21 | CA1910041_002_002-202109210915 | ND |
| 2021-12-14 | CA1910041_007_007-202112141012 | ND |
| 2022-04-19 | CA1910041_002_002-202204190800 | ND |
| 2022-06-21 | CA1910041_002_002-202206210815 | ND |
| 2022-09-20 | CA1910041_002_002-202209200940 | ND |
| 2023-02-02 | CA1910041_009_009-202302021000 | ND |
| 2023-03-15 | CA1910041_001_001-202303150800 | ND |
| 2023-03-15 | CA1910041_002_002-202303150815 | ND |
| 2023-06-15 | CA1910041_001_001-202306150850 | ND |
| 2023-06-15 | CA1910041_004_004-202306150950 | ND |
| 2023-06-15 | CA1910041_005_005-202306151038 | ND |
| 2023-06-15 | CA1910041_002_002-202306150830 | ND |
| 2023-06-15 | CA1910041_007_007-202306151100 | ND |
| 2023-07-19 | CA1910041_009_009-202307191030 | ND |
| 2023-09-26 | CA1910041_004_004-202309260800 | ND |
| 2023-10-24 | CA1910041_009_009-202310240900 | ND |
| 2023-12-18 | CA1910041_002_002-202312180835 | ND |