Diazinon (Spectracide)

California Water Service Company - East Los Angeles

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.

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Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	N/A	0	N/A
2015	ND	16	ND
2016	ND	1	ND
2017	N/A	0	N/A
2018	ND	16	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
2015-04-06	9590-004-1017	ND
2015-04-06	9590-055-1250	ND
2015-04-06	9590-006-1005	ND
2015-04-06	9590-034-1150	ND
2015-04-06	9590-011-1342	ND
2015-04-06	9590-025-1222	ND
2015-04-06	9590-023-1148	ND
2015-04-06	9590-012-1417	ND
2015-07-06	9590-004-0958	ND
2015-07-06	9590-055-1142	ND
2015-07-06	9590-034-1039	ND
2015-07-06	9590-025-1215	ND
2015-07-06	9590-023-1028	ND
2015-07-06	9590-012-1120	ND
2015-07-06	9590-011-1116	ND
2015-07-06	9590-006-0907	ND
2016-12-20	9590-055-1217	ND
2018-04-16	9590-012-1216	ND
2018-04-16	9590-055-1139	ND
2018-04-16	9590-011-1122	ND
2018-04-16	9590-023-1236	ND
2018-04-16	9590-004-1013	ND
2018-04-16	9590-025-1201	ND
2018-04-16	9590-006-0837	ND
2018-04-16	9590-034-1053	ND
2018-07-09	9590-055-1113	ND
2018-07-09	9590-004-1018	ND
2018-07-09	9590-034-1050	ND
2018-07-09	9590-025-1128	ND
2018-07-09	9590-006-0908	ND
2018-07-09	9590-023-1209	ND
2018-07-09	9590-011-1103	ND
2018-08-13	9590-012-1115	ND