1,2,3-Trichloropropane

Dayton Valley 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

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	18	ND
2014	ND	2	ND
2015	ND	2	ND
2016	ND	2	ND
2017	N/A	0	N/A
2018	ND	2	ND
2019	ND	8	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
2013-02-20	1302601-001A	ND
2013-02-20	1302604-001A	ND
2013-02-20	1302605-001A	ND
2013-02-20	1302608-001A	ND
2013-02-20	1302603-001A	ND
2013-02-20	1302602-001A	ND
2013-02-20	1302600-001A	ND
2013-02-20	1302607-001A	ND
2013-02-20	1302606-001A	ND
2013-06-10	1306237-001F	ND
2013-08-26	1308882-001A	ND
2013-08-26	1308886-001A	ND
2013-08-26	1308884-001A	ND
2013-08-26	1308885-001A	ND
2013-08-26	1308887-001A	ND
2013-08-26	1308881-001A	ND
2013-08-26	1308883-001A	ND
2013-08-26	1308880-001A	ND
2014-05-13	1405260-007	ND
2014-05-13	1405260-006	ND
2015-05-26	1505605-002	ND
2015-05-26	1505605-001	ND
2016-08-23	6H25005-02	ND
2016-08-23	6H25005-01	ND
2018-05-16	1805551-002	ND
2018-05-16	1805551-001	ND
2019-04-02	19040080-001	ND
2019-05-20	19050593-001VOC	ND
2019-05-20	19050593-001	ND
2019-06-27	19060933-002	ND
2019-06-27	19060933-001	ND
2019-06-27	19060931-001	ND
2019-08-14	19080524-001	ND
2019-10-31	19101057-001	ND