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EWG's Tap Water Database — 2021 UPDATE

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1,1,1,2-Tetrachloroethane

Zone 7 Water Agency

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

 

97

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND190ND
2015ND100ND
2016ND80ND
2017ND90ND
2018ND150ND
2019ND360ND

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
2014-03-245100-001-1000ND
2014-03-245100-008-1045ND
2014-06-095100-001-1000ND
2014-06-105100-005-1000ND
2014-06-105100-011-1040ND
2014-06-115100-013-0930ND
2014-06-115100-006-0825ND
2014-06-165100-007-0910ND
2014-06-175100-012-1125ND
2014-06-195100-019-0935ND
2014-09-085100-001-0840ND
2014-09-085100-006-1150ND
2014-09-085100-008-1043ND
2014-09-095100-007-0930ND
2014-09-105100-011-0800ND
2014-09-105100-005-0830ND
2014-11-139590-017-0905ND
2014-12-085100-008-1045ND
2014-12-085100-001-0905ND
2015-03-039590-017-0825ND
2015-06-225100-008-0845ND
2015-06-225100-001-1100ND
2015-06-245100-019-0845ND
2015-06-255100-017-0955ND
2015-06-265100-007-0930ND
2015-06-265100-005-0905ND
2015-09-085100-008-1030ND
2015-09-085100-001-0930ND
2015-09-105100-017-0910ND
2016-07-115100-008-1010ND
2016-07-115100-001-0920ND
2016-07-115100-007-1220ND
2016-07-135100-017-1035ND
2016-07-135100-019-0920ND
2016-10-105100-008-0930ND
2016-10-105100-001-0915ND
2016-10-135100-012-1400ND
2017-04-105100-001-0910ND
2017-04-125100-017-1110ND
2017-07-105100-007-1010ND
2017-07-105100-019-1135ND
2017-07-115100-008-0955ND
2017-07-115100-017-1210ND
2017-07-115100-001-0935ND
2017-07-125100-012-0900ND
2017-07-135100-013-0915ND
2018-04-095100-001-1137ND
2018-04-095100-008-1020ND
2018-04-095100-017-1035ND
2018-04-105100-019-0925ND
2018-04-105100-005-1240ND
2018-04-105100-011-1215ND
2018-04-115100-012-1040ND
2018-04-115100-013-0940ND
2018-04-115100-006-1110ND
2018-10-085100-019-1140ND
2018-10-085100-008-0955ND
2018-10-085100-001-0825ND
2018-10-085100-012-1200ND
2018-10-095100-017-0900ND
2018-10-105100-007-1435ND
2019-01-075100-020-1150ND
2019-01-075100-008-1017ND
2019-01-075100-017-1025ND
2019-01-075100-005-1215ND
2019-01-075100-012-1100ND
2019-01-085100-019-0940ND
2019-01-085100-007-0910ND
2019-01-085100-011-1015ND
2019-04-085100-008-0925ND
2019-04-085100-007-1130ND
2019-04-085100-017-0916ND
2019-04-095100-012-0935ND
2019-04-095100-019-1040ND
2019-04-095100-013-0955ND
2019-04-095100-006-0920ND
2019-07-085100-011-0945ND
2019-07-085100-020-1130ND
2019-07-085100-005-1015ND
2019-07-085100-013-1015ND
2019-07-085100-007-0950ND
2019-07-095100-017-0925ND
2019-07-095100-006-1145ND
2019-07-095100-019-1045ND
2019-07-105100-001-1010ND
2019-07-105100-008-1115ND
2019-10-075100-006-0900ND
2019-10-075100-020-0920ND
2019-10-075100-005-1150ND
2019-10-075100-001-1325ND
2019-10-075100-013-0945ND
2019-10-075100-012-1015ND
2019-10-075100-011-1050ND
2019-10-075100-008-1210ND
2019-10-075100-007-0830ND
2019-10-085100-019-1015ND
2019-10-085100-017-0830ND