1,2,3-Trichloropropane

City of San Diego

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
2013	ND	6	ND
2014	ND	15	ND
2015	N/A	0	N/A
2016	N/A	0	N/A
2017	N/A	0	N/A
2018	ND	4	ND
2019	N/A	0	N/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
2013-08-19	1308683-001F	ND
2013-08-20	1308735-001F	ND
2013-08-21	1308767-001F	ND
2013-11-12	1311402-001F	ND
2013-11-12	1311404-001F	ND
2013-11-13	1311448-001F	ND
2014-02-10	1402421-001F	ND
2014-02-10	1402418-001F	ND
2014-02-11	1402513-001F	ND
2014-02-19	9437-006-0000	ND
2014-02-19	9437-010-0000	ND
2014-02-19	9437-001-0000	ND
2014-05-12	1405468-001F	ND
2014-05-12	1405511-001F	ND
2014-05-13	1405607-001F	ND
2014-05-21	9437-006-0000	ND
2014-05-21	9437-010-0000	ND
2014-05-21	9437-001-0000	ND
2014-08-20	9437-010-0000	ND
2014-08-20	9437-006-0000	ND
2014-08-20	9437-001-0000	ND
2018-03-07	2706-030-0850	ND
2018-05-09	9437-030-0000	ND
2018-08-08	9437-030-0000	ND
2018-11-14	9437-030-0000	ND