Diazinon (Spectracide)

Cal-water Service Company - Chico

Diazinon is a toxic pesticide. The EPA banned residential uses in 2004 and restricted uses on food crops due to safety concerns. Diazinon exposures damage the nervous system, especially during gestation and childhood.

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	N/A	0	N/A
2014	ND	12	ND
2015	ND	1	ND
2016	N/A	0	N/A
2017	ND	13	ND
2018	ND	1	ND
2019	N/A	0	N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1 ppb

The EWG Health Guideline of 1 ppb for diazinon was defined by the Environmental Protection Agency as a lifetime health-based limit for effects other than cancer. This health guideline protects against .

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-01-14	5810-140-1234	ND
2014-01-29	5810-075-1015	ND
2014-01-29	5810-062-0941	ND
2014-02-26	5810-054-1047	ND
2014-03-11	5810-049-1133	ND
2014-04-10	5810-074-0847	ND
2014-04-23	5810-140-0925	ND
2014-05-12	5810-063-0920	ND
2014-05-13	5810-059-1036	ND
2014-05-13	5810-041-1139	ND
2014-06-24	5810-064-0941	ND
2014-12-17	5810-007-0802	ND
2015-07-14	5810-052-0700	ND
2017-01-05	9590-017-1000	ND
2017-01-18	9590-062-1038	ND
2017-02-07	9590-017-1105	ND
2017-02-23	9590-054-1215	ND
2017-03-07	9590-049-1111	ND
2017-04-04	9590-074-0811	ND
2017-04-20	9590-038-1115	ND
2017-05-04	9590-059-0910	ND
2017-05-10	9590-041-1113	ND
2017-05-10	9590-032-0853	ND
2017-05-15	9590-063-0813	ND
2017-06-19	9590-064-0930	ND
2017-12-05	9590-007-0805	ND
2018-11-07	9590-075-1122	ND