1,2,3-Trichloropropane

Harris County FWSD 61

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

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	7	ND
2015	ND	9	ND
2016	ND	5	ND
2017	ND	7	ND
2018	ND	4	ND
2019	ND	5	ND

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
2014-02-04	AC41253	ND
2014-02-04	AC41321	ND
2014-02-04	AC41311	ND
2014-07-18	AC60305	ND
2014-09-23	Q1446861003	ND
2014-09-23	Q1446861005	ND
2014-09-23	Q1446861001	ND
2015-03-23	Q1510556003	ND
2015-03-23	Q1510556001	ND
2015-03-23	Q1510556005	ND
2015-04-01	AC86960	ND
2015-04-01	AC86966	ND
2015-04-01	AC86972	ND
2015-04-01	AC86968	ND
2015-09-18	AD07856	ND
2015-10-12	AD10264	ND
2016-01-12	AD17584	ND
2016-01-12	AD17638	ND
2016-01-12	AD17578	ND
2016-01-12	AD17592	ND
2016-01-12	AD17582	ND
2017-02-02	AD68423	ND
2017-02-02	AD68425	ND
2017-02-02	AD68455	ND
2017-02-02	AD68419	ND
2017-02-02	AD68469	ND
2017-02-02	AD68471	ND
2017-02-02	AD68475	ND
2018-03-01	AE16318	ND
2018-03-01	AE16344	ND
2018-03-01	AE16320	ND
2018-03-01	AE16316	ND
2019-01-09	AE49223	ND
2019-01-09	AE49221	ND
2019-01-09	AE49215	ND
2019-01-09	AE49217	ND
2019-02-08	AE53831	ND