Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Norwich Public Utilities

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
2018ND30ND
2019ND30ND
2020ND30ND
2021ND20ND
2022ND30ND
2023ND30ND

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
2018-09-18PH-0453-6304497VOC1ND
2018-09-18PH-0453-6304496VOC1ND
2018-10-03PH-0453-6304498VOC1ND
2019-08-29PH-0453-6305609VOC1ND
2019-08-29PH-0453-6305611VOC1ND
2019-09-16PH-0453-6305610VOC1ND
2020-07-09PH-0453-6306438VOC1ND
2020-07-09PH-0453-6306437VOC1ND
2020-07-09PH-0453-6306436VOC1ND
2021-06-07PH-0453-6307352VOC1ND
2021-06-23PH-0453-6307354VOC1ND
2022-01-18PH-0453-6307960VOC1ND
2022-02-03PH-0453-6307962VOC1ND
2022-11-29PH-0453-6307961VOC1ND
2023-11-14D3K1545-01VOCND
2023-11-14D3K1545-02VOCND
2023-11-14D3K1545-03VOCND