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EWG's Tap Water Database — 2021 UPDATE

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1,2,3-Trichloropropane

San Francisco City Water System

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

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND80ND
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND160ND
2019N/A00N/A

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
2013-01-31201302010153AMND
2013-02-20201302220337AMND
2013-04-29201304300195AMND
2013-06-06201306070190AMND
2013-07-30201307310290AMND
2013-08-12201308130156AMND
2013-10-07201310080350AMND
2013-10-10201310110406AMND
2018-02-205867-008-1035ND
2018-02-205867-007-1035ND
2018-03-065867-004-1031ND
2018-03-085867-006-0925ND
2018-06-129590-007-0539ND
2018-06-129590-008-0943ND
2018-06-129590-006-1011ND
2018-06-129590-004-1047ND
2018-09-182371-008-1025ND
2018-09-192371-007-0720ND
2018-10-029590-006-1330ND
2018-10-029590-004-1315ND
2018-12-119590-007-0740ND
2018-12-119590-008-1045ND
2018-12-119590-006-0915ND
2018-12-119590-004-0845ND