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EWG's Tap Water Database — 2019 UPDATE

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Dimethoate

Status: No national drinking water standard exists

 

Dimethoate is an organophosphate insecticide highly toxic to the nervous system, particularly during pregnancy and childhood.

2015-2017:

FOUND

1

states detected

2

utilities detected

5,700

people served

States reporting dimethoate in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
Nevada25,700
MORE
LESS

Utilities with the highest amounts of dimethoate, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Ely Municipal Water Department*Ely, NV1 of 100.00400 ppb5,000
Ruth Water DistrictMcgill, NV1 of 100.00400 ppb700

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Dimethoate, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served