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EWG's Tap Water Database — 2021 UPDATE

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1,1,1,2-Tetrachloroethane

Dover City PWS

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

MORE ABOUT THIS CONTAMINANT

 

38

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND200ND
2015ND180ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

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
2014-02-1314021078ND
2014-02-1314021077ND
2014-02-1314021076ND
2014-02-1314021075ND
2014-05-1314051938ND
2014-05-1314051937ND
2014-05-1314051936ND
2014-05-1314051935ND
2014-05-1314051934ND
2014-08-1214081806ND
2014-08-1214081804ND
2014-08-1214081807ND
2014-08-1214081808ND
2014-08-1214081809ND
2014-11-1314111835ND
2014-11-1314111836ND
2014-11-1314111838ND
2014-11-1314111839ND
2014-11-1314111840ND
2014-11-1414111837ND
2015-02-1115021556ND
2015-02-1115021557ND
2015-02-1115021558ND
2015-02-1115021559ND
2015-02-1115021560ND
2015-02-1115021555ND
2015-05-1215052230ND
2015-05-1215052227ND
2015-05-1215052228ND
2015-05-1215052229ND
2015-05-1215052231ND
2015-05-1215052232ND
2015-08-1115081254ND
2015-08-1115081253ND
2015-08-1115081252ND
2015-08-1115081251ND
2015-08-1115081250ND
2015-08-1115081249ND