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EWG's Tap Water Database — 2019 UPDATE

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1,1,1,2-Tetrachloroethane

Status: No national drinking water standard exists

 

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

2015-2017:

FOUND
FOUND ABOVE HEALTH GUIDELINES

2

states detected

2

utilities detected

43,667

people served

0

states over health guideline

0

utilities over health guideline

0

people served over health guideline

Health concerns for 1,1,1,2-tetrachloroethane

Cancer

Harm to the liver

Change to the central nervous system

State and national drinking water standards and health guidelines

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

States reporting 1,1,1,2-tetrachloroethane in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
Connecticut137,267
Ohio16,400
MORE
LESS

Utilities with the highest amounts of 1,1,1,2-tetrachloroethane, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Wallingford Water DepartmentWallingford, CT1 of 170.0294 ppb37,267
Milford City Public Water SystemMilford, OH1 of 190.0263 ppb6,400
UtilityLocationTestsAverage levelPeople served
Wallingford Water DepartmentWallingford, CT1 of 170.0294 ppb37,267