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CONTAMINANT

1,1,1,2-Tetrachloroethane

FOUND

Exceeding guidelines

STATES DETECTED

3

serves

156,000

utilities detected

23

states detected

1

serves

1,069

utilities detected

1

Overview

1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 1 ppb

The EWG Health Guideline of 1 ppb for 1,1,1,2-tetrachloroethane was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

National Standard Exists

Health Concerns:

  • Cancer

  • Harm to the liver

  • Change to the central nervous system

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1,1,1,2-Tetrachloroethane around the Country

UTILITIES REPORTING ABOVE HEALTH GUIDELINES UTILITIES WITH CONTAMINATION
State Utilities People Served Utilities People Served
Alabama0015146,364
New York0078,328
Wisconsin11,06911,069

Utilities with the highest amounts of 1,1,1,2-tetrachloroethane, 2021-2023

ALL UTILITIES
LARGE UTILITIES
Utility Location Tests Average level People served
Dickeyville WaterworksDickeyville, WI1 of 126.0 ppb1,069
Ragland (the Water Works Board of The, Town of)Ragland, AL1 of 10.500 ppb3,162
Pine Tree Mobile Home ParkStamford, NY1 of 10.500 ppb44
Canisteo VillageCanisteo, NY1 of 30.400 ppb2,336
Silver Lake Institute - Castile Water District #1Castile, NY1 of 20.250 ppb440
Perry Center Water DistrictPerry, NY1 of 20.250 ppb150
Perry Village*Perry, NY1 of 20.250 ppb4,348
Gardeau Water DistrictSilver Springs, NY1 of 20.250 ppb60
Childersburg Water & Sewer BoardChildersburg, AL4 of 130.154 ppb9,744
Glencoe Water Works Board*Glencoe, AL2 of 70.143 ppb6,450
Tillison Bend Water AuthorityGadsden, AL2 of 70.143 ppb1,065
Angelica Village Public WaterAngelica, NY1 of 40.125 ppb950
Wattsville Water AuthorityRagland, AL2 of 80.125 ppb5,511
Leeds Water BoardLeeds, AL9 of 390.115 ppb21,300
Irondale Water SystemIrondale, AL3 of 160.0938 ppb10,098
Remlap-Pine Mountain Water Authority205-681-1711, AL3 of 170.0882 ppb2,616
Oneonta Utilities Board*Oneonta, AL3 of 170.0882 ppb19,737
Waldo Water SystemTalladega, AL10 of 570.0877 ppb417
City of Talladega Water and Sewer Board*Talladega, AL10 of 570.0877 ppb20,250
Yes Southgate, LlcDenver, AL1 of 60.0833 ppb330
Fsi Green Park South Property LlcDenver, AL1 of 60.0833 ppb966
Springville Water WorksSpringville, AL2 of 120.0833 ppb6,015
Pelham Water Works*Pelham, AL1 of 60.0833 ppb38,703

* 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 1,1,1,2-Tetrachloroethane, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
Leeds Water BoardLeeds, AL9 of 390.115 ppb21,300
Irondale Water SystemIrondale, AL3 of 160.0938 ppb10,098
Oneonta Utilities Board*Oneonta, AL3 of 170.0882 ppb19,737
City of Talladega Water and Sewer Board*Talladega, AL10 of 570.0877 ppb20,250
Pelham Water Works*Pelham, AL1 of 60.0833 ppb38,703

* 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 1,1,1,2-Tetrachloroethane, but it likely has the contaminant in its water supply.

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