Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Holland Water District

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND50ND
2020ND10ND
2021ND10ND
2022ND20ND
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
2018-05-16R1804528-001ND
2018-08-07R1807559-003ND
2019-03-13R1902205ND
2019-06-12R1905459ND
2019-08-12EHS1900040398-SR-2ND
2019-09-033056992001ND
2019-12-033074584001ND
2020-04-073096891001ND
2021-05-11EHS2100054419-01-2ND
2022-03-30EHS2200015539-01BND
2022-04-19EHS2200018402-01ND