Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Oakboro, Town of

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.10 ppb111.10 ppb
2019N/A00N/A
20201.10 ppb111.10 ppb
20211.60 ppb111.60 ppb
20220.875 ppb42ND - 2.10 ppb
20231.50 ppb111.50 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
2018-03-0747802-011.10 ppb
2020-01-3178216-011.10 ppb
2021-02-1092521519001_127101.60 ppb
2022-03-0292591813001_127101.40 ppb
2022-06-1092610490001_127102.10 ppb
2022-09-072092963-01ND
2022-12-072123593-01ND
2023-03-0137729_23-110121.50 ppb