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EWG's Tap Water Database — 2019 UPDATE

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1,1,2-Trichloroethane

Tract 349 Mutual Water Co.

1,1,2-Trichloroethane is a volatile neurotoxic solvent used for manufacturing products such as plastic wrap and carpet backing. It causes liver tumors in animal studies. Read More.

The EPA classifies 1,1,2- trichloroethane as a possible human carcinogen. The California public health goal of 0.3 parts per billion, set to protect against cancer, is 16 times lower than the amount allowed by the federal government, which is a Maximum Contaminant Level of 5 parts per billion.

Click here to read more about carcinogenic VOCs.

 

49

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND60ND
2013ND60ND
20140.126 ppb51ND - 0.630 ppb
2015ND90ND
2016ND100ND
20170.1000 ppb131ND - 1.30 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.3 ppb

The EWG Health Guideline of 0.3 ppb for 1,1,2-trichloroethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 5 ppb

The legal limit for 1,1,2-trichloroethane, established in 1992, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to 1,1,2-trichloroethane exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2012-01-122706-002-0820ND
2012-01-232706-002-1230ND
2012-04-242706-002-0900ND
2012-07-122706-002-0835ND
2012-10-222706-003-1055ND
2012-10-222706-002-1040ND
2013-01-212706-002-1140ND
2013-04-162706-002-0820ND
2013-09-272706-002-0825ND
2013-10-102706-002-0914ND
2013-10-242706-002-0900ND
2013-10-242706-003-0930ND
2014-02-069588-002-0916ND
2014-04-169588-002-1015ND
2014-07-319588-002-0915ND
2014-12-099588-003-0914ND
2014-12-129588-002-09380.630 ppb
2015-03-209588-002-0930ND
2015-04-249588-002-0940ND
2015-07-309588-002-1133ND
2015-08-289588-002-0917ND
2015-09-259588-002-0905ND
2015-10-239588-002-0932ND
2015-10-269588-003-0929ND
2015-11-209588-002-0900ND
2015-12-189588-002-1123ND
2016-01-299588-003-0900ND
2016-03-299588-002-0926ND
2016-05-279588-002-0915ND
2016-06-249588-002-0901ND
2016-07-229588-002-0939ND
2016-08-269588-002-0920ND
2016-09-169588-002-0916ND
2016-10-149588-002-0930ND
2016-11-049588-002-1000ND
2016-12-099588-002-0935ND
2017-01-279588-002-0920ND
2017-02-109588-002-0850ND
2017-02-249588-003-0910ND
2017-03-109588-002-0925ND
2017-04-219588-002-0907ND
2017-05-199588-002-0855ND
2017-06-239588-002-09301.30 ppb
2017-07-149588-002-0915ND
2017-08-189588-002-0930ND
2017-09-229588-002-0925ND
2017-10-279588-002-0950ND
2017-11-179588-002-1115ND
2017-12-089588-002-0901ND