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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

East Pasadena Water Company

1,1,1-Trichloroethane is a solvent and a degreasing agent used for manufacturing metal products and as ingredient in cleaners and aerosols. Exposure to 1,1,1-trichloroethane can harm the nervous system, liver and circulatory system.

MORE ABOUT THIS CONTAMINANT

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND70ND
2015ND60ND
2016ND50ND
2017ND50ND
2018ND80ND
2019ND90ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 200 ppb

The legal limit for 1,1,1-trichloroethane, established in 1987, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-173761-004-0840ND
2014-04-079588-012-1115ND
2014-05-273761-012-0845ND
2014-06-163761-004-0845ND
2014-07-079588-005-1000ND
2014-09-223761-004-0925ND
2014-12-223761-004-0800ND
2015-03-173761-004-0820ND
2015-04-019588-012-0910ND
2015-06-233761-004-0800ND
2015-07-159588-005-1030ND
2015-09-283761-004-0850ND
2015-12-143761-004-0805ND
2016-03-213761-004-0840ND
2016-04-129588-012-1105ND
2016-06-203761-004-0850ND
2016-07-069588-005-1145ND
2016-12-193761-004-0830ND
2017-03-273761-004-0950ND
2017-04-119588-012-1050ND
2017-06-193761-004-1010ND
2017-07-139588-005-1330ND
2017-09-183761-004-0850ND
2018-03-193761-004-1000ND
2018-03-193761-005-0940ND
2018-03-193761-012-0855ND
2018-04-119588-012-1035ND
2018-04-263761-004-0840ND
2018-05-223761-004-1130ND
2018-07-129588-005-1035ND
2018-09-103761-004-0815ND
2019-01-143761-004-1140ND
2019-03-043761-004-0815ND
2019-03-113761-004-0820ND
2019-04-039588-012-1000ND
2019-06-173761-004-0900ND
2019-07-299588-005-1225ND
2019-09-163761-004-0830ND
2019-10-143761-004-0730ND
2019-12-163761-004-0815ND