Know Your Environment. Protect Your Health.

Chlordane

Regional Water Authority

The cancer-causing pesticide chlordane was banned in 1988. Chlordane is persistent and accumulates in the body. It is still found in the environment and in the bodies of adults and newborn babies.

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND220ND
2020N/A00N/A
2021N/A00N/A
2022ND260ND
2023N/A00N/A

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 chlordane 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): 2 ppb

The legal limit for chlordane, 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 chlordane exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2019-05-08SOC 200531300ND
2019-05-28SOC 200533720ND
2019-05-28SOC 200533659ND
2019-05-28SOC 200533660ND
2019-05-28SOC 200533803ND
2019-05-28SOC 200533719ND
2019-05-28SOC 200533804ND
2019-05-29SOC 200533881ND
2019-05-29SOC 200533880ND
2019-05-29SOC 200533867ND
2019-05-29SOC 200533868ND
2019-08-26SOC 200546197ND
2019-08-26SOC 200546198ND
2019-08-26SOC 200546200ND
2019-08-27SOC 200546267ND
2019-08-27SOC 200546303ND
2019-08-27SOC 200546302ND
2019-08-27SOC 200546268ND
2019-08-28SOC 200546738ND
2019-08-28SOC 200546737ND
2019-08-28SOC 200546736ND
2019-08-28SOC 200546553ND
2022-07-11S300210659 300210661ND
2022-07-11S300210651 300210653ND
2022-07-11S300210164 300210166ND
2022-07-11S300210822 300210824ND
2022-07-11S300210156 300210158ND
2022-07-12S300211086 300211088ND
2022-07-12S300211068 300211070ND
2022-07-12S300211076 300211078ND
2022-07-13S300212413 300212415ND
2022-07-13S300212421 300212423ND
2022-07-14S300212957 300212959ND
2022-10-17300258850 300258852CND
2022-10-17300258858 300258860CND
2022-10-18300259350 300259352CND
2022-10-18300258921 300258923CND
2022-10-18300259358 300259360CND
2022-10-18300258913 300258915CND
2022-10-19S300259930 300259934ND
2022-10-19300259930 300259934BND
2022-10-19300259940 300259942BND
2022-10-19S300259940 300259942ND
2022-10-19S300260499 300260501ND
2022-10-19300260499 300260501BND
2022-10-19300260507 300260509BND
2022-10-19S300260507 300260509ND
2022-12-06S300281400 300281402ND