Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Castroville Community Services 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.

 

7

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
2019ND40ND
2020N/A00N/A
2021N/A00N/A
2022ND30ND
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
2019-01-28CA2710005_004_004-201901281055ND
2019-01-28CA2710005_009_009-201901281045ND
2019-01-28CA2710005_003_003-201901281035ND
2019-01-28CA2710005_005_005-201901281050ND
2022-01-10CA2710005_009_009-202201100905ND
2022-01-10CA2710005_005_005-202201100955ND
2022-01-10CA2710005_003_003-202201100900ND