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EWG's Tap Water Database — 2021 UPDATE

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1,3-Dichloropropene

Golden State Water Company - Los Osos

1,3-Dichloropropene is a volatile cancer-causing chemical primarily used as a nematocide to fumigate agricultural soils. It exists in two different forms: cis-1,3-dichloropropene and trans-1,3-dichloropropene.

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015N/A00N/A
2016ND10ND
2017ND100ND
2018ND20ND
2019ND10ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.2 ppb

The EWG Health Guideline of 0.2 ppb for 1,3-dichloropropene 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.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-022706-010-0810ND
2014-01-022706-007-0835ND
2014-01-022706-003-0915ND
2014-01-022706-001-0745ND
2014-07-022706-008-0850ND
2016-05-112706-019-0718ND
2017-02-219590-003-1010ND
2017-02-219590-010-0825ND
2017-02-219590-001-0842ND
2017-07-129590-019-1010ND
2017-07-189590-019-1000ND
2017-09-269590-019-0830ND
2017-10-309590-019-1405ND
2017-11-029590-019-1550ND
2017-12-129590-019-1015ND
2017-12-129590-019-1035ND
2018-02-139590-019-0840ND
2018-03-139590-019-1015ND
2019-01-149590-019-1500ND