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EWG's Tap Water Database — 2019 UPDATE

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1,1,1,2-Tetrachloroethane

West Sound Utility District #1

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

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
2015ND10ND
2016N/A00N/A
2017ND200ND

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
2015-04-1501027ND
2017-04-11ND
2017-04-11ND
2017-04-11ND
2017-04-11ND
2017-04-11ND
2017-04-12ND
2017-04-12ND
2017-04-12ND
2017-04-12ND
2017-04-12ND
2017-05-25ND
2017-06-29ND
2017-06-29ND
2017-06-29ND
2017-08-04ND
2017-08-04ND
2017-08-25ND
2017-09-07ND
2017-09-07ND
2017-11-22ND