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EWG's Tap Water Database — 2021 UPDATE

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1,2,3-Trichloropropane

Dean Water Supply Corporation

1,2,3-Trichloropropane is a potent carcinogen that contaminates drinking water in agricultural regions where it was historically used as soil fumigant. Click here to read more about carcinogenic VOCs.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND30ND
2017ND60ND
2018ND30ND
2019ND30ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.0007 ppb

The EWG Health Guideline of 0.0007 ppb for 1,2,3-trichloropropane 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
2014-08-06Q1434210009ND
2014-08-06Q1434210007ND
2014-12-19Q1460754007ND
2014-12-19Q1460754004ND
2015-07-02AC98352ND
2015-12-02Q1547859006ND
2015-12-02Q1547859003ND
2015-12-02Q1547859002ND
2016-10-17Q1644288006ND
2016-10-17Q1644288003ND
2016-10-17Q1644288002ND
2017-08-30Q1739978005ND
2017-08-30Q1739978014ND
2017-08-30Q1739978003ND
2017-08-30Q1739978013ND
2017-08-30Q1739978021ND
2017-08-30Q1739978016ND
2018-08-01Q1830513008ND
2018-08-01Q1830513002ND
2018-08-01Q1830513006ND
2019-08-08Q1952672002ND
2019-08-08Q1952672006ND
2019-08-08Q1952672004ND