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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Dona Ana MDWCA

1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015N/A00N/A
2016N/A00N/A
2017ND40ND
2018ND30ND
2019ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 70 ppb

The legal limit for cis-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-07-291408061-001AND
2014-07-291408060-001AND
2014-07-291408063-001AND
2014-07-291408057-001AND
2014-07-291408062-001AND
2014-09-031409282-001AND
2017-01-111701548-001ND
2017-01-111701554-001ND
2017-01-111701555-001ND
2017-01-111701556-001ND
2018-01-091801603-001ND
2018-01-091801604-001ND
2018-01-161801921-001ND
2019-07-091907439-001ND
2019-10-211910C28-001ND