Know Your Environment. Protect Your Health.

Chlordane

Ashebrook Park

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.262 ppb21ND - 0.524 ppb
20190.300 ppb21ND - 0.600 ppb
20200.443 ppb220.397 ppb - 0.488 ppb
20210.421 ppb220.345 ppb - 0.496 ppb
2022ND20ND
2023ND30ND

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
2018-05-02CB02791-01ND
2018-10-31CB13856-01RE20.524 ppb
2019-05-01CC03170-01RE10.600 ppb
2019-10-16CC14382-01ND
2020-04-09CD03859-01RE10.397 ppb
2020-10-21CD14780-010.488 ppb
2021-04-28CE02402-010.496 ppb
2021-11-16CE13026-010.345 ppb
2022-05-12CF02923-01ND
2022-11-15CF12933-01ND
2023-05-24752-7564-1ND
2023-11-01752-13279-1ND
2023-12-12752-14634-1ND