Chlorpyriphos

Salt Lake City Water System

Chlorpyrifos is an organophosphate pesticide that has been widely used, but in 2021, application on food crops was banned by the EPA. Exposure to chlorpyrifos during pregnancy and early life harms the developing brain, including reduced IQ, delayed development of motor and sensory functions, and social and behavioral dysfunction.

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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	N/A	0	N/A
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

All test results

Date	Result
2019-12-11	ND
2019-12-11	ND
2020-03-10	ND
2020-03-10	ND
2020-03-31	ND
2020-03-31	ND
2020-03-31	ND
2020-03-31	ND
2020-03-31	ND
2020-04-15	ND
2020-04-15	ND
2020-04-15	ND
2020-04-15	ND
2020-04-15	ND
2020-04-15	ND
2020-04-16	ND
2020-04-21	ND
2020-06-10	ND
2020-06-10	ND
2020-06-10	ND
2020-09-09	ND
2020-09-09	ND
2020-09-09	ND
2020-09-09	ND
2020-09-09	ND
2020-09-09	ND
2020-09-15	ND
2020-09-15	ND
2020-09-15	ND
2020-09-22	ND
2020-09-23	ND
2020-09-29	ND
2020-09-29	ND
2020-09-30	ND
2020-10-13	ND
2020-10-20	ND