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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Arizona Water Company - Sedona

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.

 

17

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
2015ND80ND
2016N/A00N/A
2017N/A00N/A
2018ND80ND
2019ND10ND

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
2015-05-195051638-07ND
2015-05-195051638-06ND
2015-05-195051638-05ND
2015-05-195051638-04ND
2015-05-195051638-03ND
2015-05-195051638-02ND
2015-05-195051638-01ND
2015-06-175061654-01ND
2018-05-0918E1147-08 VOCND
2018-05-0918E1147-07 VOCND
2018-05-0918E1147-06 VOCND
2018-05-0918E1147-05 VOCND
2018-05-0918E1147-04 VOCND
2018-05-1618E1760-01 VOCND
2018-08-1518H1709-01ND
2018-10-2418J2635-01 VOCND
2019-01-3019A3195-01ND