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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Rimrock Road Neighborhood

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.

 

1

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
20150.0331 ppb363ND - 0.540 ppb
20160.0167 ppb211ND - 0.350 ppb
20170.0498 ppb445ND - 0.570 ppb
20180.0621 ppb348ND - 0.400 ppb
20190.0432 ppb253ND - 0.390 ppb

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
2014-08-07150039001ND