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EWG's Tap Water Database — 2021 UPDATE

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1,3-Dichloropropene

Golden State Water Company (GSWC) -Willowbrook

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND
2018ND20ND
2019ND20ND

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
2014-02-052706-001-1130ND
2014-02-052706-003-1145ND
2015-02-022706-001-0943ND
2015-02-022706-003-0915ND
2016-02-022706-001-0905ND
2016-02-022706-003-0906ND
2017-02-089590-001-1345ND
2017-02-089590-003-1351ND
2018-02-069590-001-1220ND
2018-02-069590-003-1230ND
2019-02-129590-001-1000ND
2019-02-129590-003-1002ND