Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Sunnyhill Water Association

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND10ND
2020ND10ND
2021ND10ND
2022ND60ND
2023N/A00N/A

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
2019-01-10190111-001VOND
2020-11-02201103-004VOND
2021-09-29VO-210930-018ND
2022-02-23VO-220224-009ND
2022-08-03VO-220804-006ND
2022-08-03VO-220804-007ND
2022-08-03VO-220804-008ND
2022-10-05VO-221006-001ND
2022-10-05VO-221006-002ND