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EWG's Tap Water Database — 2021 UPDATE

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Dimethipin

Status: No national drinking water standard exists

 

Dimethipin is an herbicide and desiccant used on cotton. It can harm the liver and kidneys and is classified as possibly carcinogenic to humans.

2018-2021:

FOUND

4

states detected

7

utilities detected

95,911

people served

States reporting dimethipin in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
Pennsylvania238,907
Ohio223,141
Kentucky221,863
New Jersey112,000
MORE
LESS

Filtering technologies that reduce dimethipin

Activated Carbon

Reverse Osmosis

Utilities with the highest amounts of dimethipin , 2018-2021

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Allen County Water District*Scottsville, KY1 of 60.468 ppb14,999
Buckeye Water District - Ohio RiverWellsville, OH1 of 40.260 ppb10,300
ConneautConneaut, OH1 of 30.219 ppb12,841
North Coventry Water SystemPottstown, PA1 of 30.0857 ppb2,907
Pottstown Borough Water Authority*Pottstown, PA1 of 30.0857 ppb36,000
Aqua NJ - Eastern DivisionHamilton, NJ1 of 40.0718 ppb12,000

* 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 Dimethipin, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
Allen County Water District*Scottsville, KY1 of 60.468 ppb14,999
Buckeye Water District - Ohio RiverWellsville, OH1 of 40.260 ppb10,300
ConneautConneaut, OH1 of 30.219 ppb12,841
Pottstown Borough Water Authority*Pottstown, PA1 of 30.0857 ppb36,000
Aqua NJ - Eastern DivisionHamilton, NJ1 of 40.0718 ppb12,000

* 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 Dimethipin, but it likely has the contaminant in its water supply.