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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Arizona Water Company - White Tanks

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND60ND
2016ND10ND
2017ND10ND
2018ND20ND
2019N/A00N/A

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
2015-02-28201802280413VND
2015-03-12201503120447VND
2015-03-12201503120448VND
2015-06-22201506230242VND
2015-07-08201507080280VND
2015-10-07201510080303VND
2016-02-03201602040225VND
2017-05-017050138-01VOCND
2018-02-28201802280413VND
2018-08-1618H1828-01ND