Know Your Environment. Protect Your Health.

1,2,3-Trichloropropane

Harris County Fresh Water Supply District 1a

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.395 ppb21ND - 0.790 ppb
2019ND10ND
2020ND10ND
2021ND20ND
2022ND10ND
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-01-24AE10232ND
2018-01-24AE102680.790 ppb
2019-01-11AE49627ND
2020-01-21AE94373ND
2021-03-08AF45718ND
2021-03-08AF45770ND
2022-01-31AF82577ND
2023-06-14AG44533ND