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EWG's Tap Water Database — 2021 UPDATE

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1,1,1,2-Tetrachloroethane

Placer County Water Agency - Foothill

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

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND20ND
2016N/A00N/A
2017N/A00N/A
2018ND20ND
2019ND30ND

ppb = parts per billion

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

All test results

Date Lab ID Result
2014-08-203334-002-1010ND
2014-08-203334-007-1200ND
2015-08-113334-002-1000ND
2015-08-113334-007-1305ND
2018-08-143334-002-1120ND
2018-08-143334-007-1310ND
2019-08-273334-002-0000ND
2019-09-093334-007-1330ND
2019-09-123334-014-1150ND