Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Conyngham Water Company

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND50ND
2021ND30ND
2022ND30ND
2023ND50ND

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
2018-04-177048808001ND
2018-04-177048808002ND
2018-04-177048808003ND
2019-03-121903-156-2ND
2019-03-1219030-156-1ND
2019-03-121903-156-1ND
2020-03-0221862225.00ND
2020-03-0221862205.00ND
2020-03-0221862185.00ND
2020-03-0221862165.00ND
2020-03-0221862145.00ND
2021-06-0124454885.00ND
2021-06-0124454865.00ND
2021-06-0124454905.00ND
2022-04-0426478812.00ND
2022-04-0426478832.00ND
2022-04-0426478852.00ND
2023-03-0628536370.00ND
2023-03-0628536390.00ND
2023-03-0628536410.00ND
2023-12-1230259320.00ND
2023-12-1230259300.00ND