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EWG's Tap Water Database — 2019 UPDATE

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Aldicarb sulfoxide

Status: No national drinking water standard exists

 

Aldicarb sulfoxide is a groundwater contaminant related to the neurotoxic insecticide aldicarb.

2015-2017:

FOUND

6

states detected

20

utilities detected

917,000

people served

Health concerns for aldicarb sulfoxide

Harm to the brain and nervous system

States reporting aldicarb sulfoxide in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
Wisconsin10850,438
New York365,050
Connecticut4675
Colorado1200
Nebraska1200
Rhode Island138
MORE
LESS

Filtering technologies that reduce aldicarb sulfoxide

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Utilities with the highest amounts of aldicarb sulfoxide, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Colonial Efficiency ApartmentsFarmington, CT1 of 12.50 ppb66
Scituate CommonsNorth Scituate, RI1 of 11.10 ppb38
Douglas County Sanitary and Improvement District 277 - The FarmOmaha, NE1 of 20.755 ppb200
Connecticut Water Company - Pompey Hollow DivisionClinton, CT1 of 10.550 ppb32
Middlebury CommonsMiddlebury, CT1 of 10.510 ppb76
Riverhead WD*Riverhead, NY1 of 10.270 ppb35,000
Riverside Water DistrictOakdale, NY1 of 10.270 ppb2,050
Ctwc - South Coventry SystemClinton, CT1 of 30.223 ppb501
Hamilton Creek MdDillon, CO1 of 20.180 ppb200
Glen Cove CityGlen Cove, NY2 of 390.0331 ppb28,000
Butler WaterworksButler, WI1 of 100.0300 ppb1,881
Menomonee Falls WW - Surface WaterMenomonee Falls, WI1 of 100.0300 ppb23,867
Milwaukee County GroundsWest Allis, WI1 of 100.0300 ppb9,936
Shorewood WaterworksShorewood, WI1 of 100.0300 ppb13,189
Wauwatosa WaterworksWauwatosa, WI1 of 100.0300 ppb49,064
West Allis WaterworksWest Allis, WI1 of 100.0300 ppb63,240
Greendale WaterworksGreendale, WI1 of 100.0300 ppb14,046
Brown Deer WaterworksBrown Deer, WI1 of 100.0300 ppb12,741
Milwaukee Waterworks*Milwaukee, WI1 of 100.0300 ppb647,290
New Berlin Water UtilityNew Berlin, WI1 of 100.0300 ppb27,899

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

UtilityLocationTestsAverage levelPeople served
Riverhead WD*Riverhead, NY1 of 10.270 ppb35,000
Glen Cove CityGlen Cove, NY2 of 390.0331 ppb28,000
Menomonee Falls WW - Surface WaterMenomonee Falls, WI1 of 100.0300 ppb23,867
Shorewood WaterworksShorewood, WI1 of 100.0300 ppb13,189
Wauwatosa WaterworksWauwatosa, WI1 of 100.0300 ppb49,064
West Allis WaterworksWest Allis, WI1 of 100.0300 ppb63,240
Greendale WaterworksGreendale, WI1 of 100.0300 ppb14,046
Brown Deer WaterworksBrown Deer, WI1 of 100.0300 ppb12,741
Milwaukee Waterworks*Milwaukee, WI1 of 100.0300 ppb647,290
New Berlin Water UtilityNew Berlin, WI1 of 100.0300 ppb27,899

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