Know Your Environment. Protect Your Health.

Chlorpyriphos

City of Tigard

NOTE: City of Tigard purchases water from Lake Oswego - Tigard Water Supply which is required to test for chlorpyriphos. Sample information shown below was taken by Lake Oswego - Tigard Water Supply.

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.

 

0

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND110ND
2020ND30ND
2021N/A00N/A
2022N/A00N/A
2023N/A00N/A

ppb = parts per billion

All test results

NOTE: City of Tigard purchases water from Lake Oswego - Tigard Water Supply which is required to test for chlorpyriphos. Sample information shown below was taken by Lake Oswego - Tigard Water Supply.

Date Lab ID Result