Toxaphene
Regional Water Authority
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 | 4 | 0 | ND |
| 2019 | ND | 26 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 30 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-05 | SOCR 200489130 | ND |
| 2018-03-05 | SOCR 200489131 | ND |
| 2018-03-05 | SOCR 200489152 | ND |
| 2018-11-29 | SOCR 200514127 | ND |
| 2019-03-04 | SOCR 200523153 | ND |
| 2019-03-04 | SOCR 200523178 | ND |
| 2019-03-04 | SOCR 200523152 | ND |
| 2019-03-04 | SOCR 200523177 | ND |
| 2019-05-08 | SOC 200531300 | ND |
| 2019-05-28 | SOC 200533720 | ND |
| 2019-05-28 | SOC 200533719 | ND |
| 2019-05-28 | SOC 200533803 | ND |
| 2019-05-28 | SOC 200533804 | ND |
| 2019-05-28 | SOC 200533660 | ND |
| 2019-05-28 | SOC 200533659 | ND |
| 2019-05-29 | SOC 200533868 | ND |
| 2019-05-29 | SOC 200533867 | ND |
| 2019-05-29 | SOC 200533881 | ND |
| 2019-05-29 | SOC 200533880 | ND |
| 2019-08-26 | SOC 200546197 | ND |
| 2019-08-26 | SOC 200546198 | ND |
| 2019-08-26 | SOC 200546200 | ND |
| 2019-08-27 | SOC 200546267 | ND |
| 2019-08-27 | SOC 200546268 | ND |
| 2019-08-27 | SOC 200546302 | ND |
| 2019-08-27 | SOC 200546303 | ND |
| 2019-08-28 | SOC 200546738 | ND |
| 2019-08-28 | SOC 200546553 | ND |
| 2019-08-28 | SOC 200546736 | ND |
| 2019-08-28 | SOC 200546737 | ND |
| 2020-03-02 | SOCR 200567667 | ND |
| 2020-03-02 | SOCR 200567642 | ND |
| 2020-03-02 | SOCR 200567666 | ND |
| 2020-03-02 | SOCR 200567641 | ND |
| 2021-03-08 | SOCR 200608887 | ND |
| 2021-03-08 | SOCR 200608803 | ND |
| 2021-03-08 | SOCR 200608888 | ND |
| 2021-03-09 | SOCR 200608923 | ND |
| 2022-03-07 | H300153331 300153332 | ND |
| 2022-03-07 | H300153416 300153417 | ND |
| 2022-03-07 | H300153334 300153335 | ND |
| 2022-03-07 | H300153409 300153414 | ND |
| 2022-07-11 | S300210651 300210653 | ND |
| 2022-07-11 | S300210659 300210661 | ND |
| 2022-07-11 | S300210164 300210166 | ND |
| 2022-07-11 | S300210156 300210158 | ND |
| 2022-07-11 | S300210822 300210824 | ND |
| 2022-07-12 | S300211086 300211088 | ND |
| 2022-07-12 | S300211068 300211070 | ND |
| 2022-07-12 | S300211076 300211078 | ND |
| 2022-07-13 | S300212413 300212415 | ND |
| 2022-07-13 | S300212421 300212423 | ND |
| 2022-07-14 | S300212957 300212959 | ND |
| 2022-10-17 | 300258850 300258852C | ND |
| 2022-10-17 | 300258858 300258860C | ND |
| 2022-10-18 | 300258913 300258915C | ND |
| 2022-10-18 | 300259350 300259352C | ND |
| 2022-10-18 | 300259358 300259360C | ND |
| 2022-10-18 | 300258921 300258923C | ND |
| 2022-10-19 | S300260499 300260501 | ND |
| 2022-10-19 | S300260507 300260509 | ND |
| 2022-10-19 | 300260507 300260509B | ND |
| 2022-10-19 | 300260499 300260501B | ND |
| 2022-10-19 | S300259940 300259942 | ND |
| 2022-10-19 | 300259940 300259942B | ND |
| 2022-10-19 | 300259930 300259934B | ND |
| 2022-10-19 | S300259930 300259934 | ND |
| 2022-12-06 | S300281400 300281402 | ND |
| 2023-04-10 | H300330392 300330393 | ND |
| 2023-04-10 | H300329920 300329921 | ND |
| 2023-04-10 | H300330395 300330396 | ND |
| 2023-04-10 | H300329917 300329918 | ND |