Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

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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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND40ND
20210.125 ppb41ND - 0.500 ppb
20220.510 ppb43ND - 0.740 ppb
20230.281 ppb42ND - 0.580 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-02-27AE08317ND
2018-06-14AE13736ND
2018-07-25AE15755ND
2018-10-10AE19481ND
2019-03-07AE26872ND
2019-06-13AE31970ND
2019-09-04AE36637ND
2019-11-13AE40146ND
2020-03-12AE46093ND
2020-05-27AE49083ND
2020-07-22AE51793ND
2020-10-21AE56198ND
2021-03-11AE62654ND
2021-05-26AE66572ND
2021-09-21AE723350.500 ppb
2021-10-20AE73728ND
2022-02-23AE795410.740 ppb
2022-04-20AE824740.620 ppb
2022-09-14AE897230.680 ppb
2022-10-18AE91740ND
2023-01-24AE959470.580 ppb
2023-04-18AF00389ND
2023-07-18AF05697ND
2023-10-17AF102840.545 ppb