Diazinon (Spectracide)

City of Porterville

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
2013	N/A	0	N/A
2014	ND	32	ND
2015	N/A	0	N/A
2016	N/A	0	N/A
2017	N/A	0	N/A
2018	N/A	0	N/A
2019	ND	2	ND

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
2014-03-24	5867-039-1035	ND
2014-03-24	5867-033-0950	ND
2014-03-24	5867-005-1420	ND
2014-03-24	5867-056-1100	ND
2014-03-24	5867-008-1330	ND
2014-03-24	5867-013-1310	ND
2014-03-24	5867-018-1405	ND
2014-03-24	5867-019-1240	ND
2014-03-24	5867-020-1010	ND
2014-03-24	5867-021-1130	ND
2014-03-27	5867-096-0940	ND
2014-03-27	5867-079-1220	ND
2014-03-27	5867-082-1330	ND
2014-03-27	5867-086-1300	ND
2014-03-27	5867-022-1130	ND
2014-03-27	5867-088-1110	ND
2014-03-27	5867-003-1400	ND
2014-05-13	5867-014-1205	ND
2014-05-13	5867-090-0955	ND
2014-05-13	5867-026-1300	ND
2014-05-13	5867-092-1055	ND
2014-05-13	5867-037-1328	ND
2014-05-13	5867-049-1315	ND
2014-05-14	5867-025-1000	ND
2014-05-14	5867-054-0920	ND
2014-05-14	5867-032-1330	ND
2014-05-14	5867-024-1250	ND
2014-05-14	5867-010-1040	ND
2014-05-15	5867-040-1320	ND
2014-05-15	5867-023-0935	ND
2014-05-15	5867-009-1205	ND
2014-05-15	5867-006-1100	ND
2019-02-15	5867-098-1400	ND
2019-02-15	5867-100-1305	ND