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EWG's Tap Water Database — 2021 UPDATE

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1,2,3-Trichloropropane

Norwalk Water Department

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.

MORE ABOUT THIS CONTAMINANT

 

38

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND180ND
2014N/A00N/A
2015N/A00N/A
2016ND30ND
2017N/A00N/A
2018ND80ND
2019ND90ND

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
2013-01-31440-36867-5ND
2013-01-31440-36867-7ND
2013-01-31440-36867-3ND
2013-01-31440-36867-1ND
2013-04-04440-42854-1ND
2013-04-04440-42854-3ND
2013-04-30440-45114-5ND
2013-04-30440-45114-1ND
2013-04-30440-45114-3ND
2013-07-292869312ND
2013-07-292869366ND
2013-07-292869357ND
2013-07-292869301ND
2013-07-292869348ND
2013-07-292869329ND
2013-10-292922268ND
2013-10-292922288ND
2013-10-292922277ND
2016-07-209588-003-0945ND
2016-07-209588-012-0915ND
2016-07-209588-002-1015ND
2018-01-249588-002-0940ND
2018-01-249588-003-0920ND
2018-04-119588-003-0930ND
2018-04-119588-002-0953ND
2018-07-259588-003-0935ND
2018-07-259588-002-1000ND
2018-10-269588-003-0920ND
2018-10-269588-002-0940ND
2019-01-239588-003-0920ND
2019-01-239588-002-0950ND
2019-04-259588-003-1005ND
2019-04-259588-002-1030ND
2019-05-249588-012-0920ND
2019-07-259588-012-0930ND
2019-07-259588-003-1010ND
2019-07-259588-002-1035ND
2019-10-259588-012-0930ND