Know Your Environment. Protect Your Health.

Chlordane

Pierce, City of

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND50ND
2021ND40ND
2022ND10ND
2023ND10ND

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
2018-04-23543502ND
2018-11-19577279ND
2018-11-19577280ND
2019-04-22603976ND
2019-09-09634550ND
2019-10-07638481ND
2020-01-21650644ND
2020-04-06667160ND
2020-05-04668242ND
2020-07-06681482ND
2020-11-09699970ND
2021-04-27727593ND
2021-10-12763938ND
2021-11-01763940ND
2021-11-01763939ND
2022-10-24833718ND
2023-10-16890918ND