Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Redmond Water Department

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.

 

16

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
2019N/A00N/A
2020N/A00N/A
2021ND80ND
2022N/A00N/A
2023ND80ND

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
2021-05-112132295-VND
2021-05-112132299-VND
2021-05-112132264-VND
2021-05-182133712-VND
2021-05-182133715-VND
2021-05-182133726-VND
2021-06-022137357-VND
2021-06-022137359-VND
2023-07-1323-40863-VND
2023-07-1323-40886-VND
2023-07-1323-40882-VND
2023-07-1323-40883-VND
2023-07-1323-40885-VND
2023-07-1323-40887-VND
2023-07-1323-40884-VND
2023-07-1723-41527-VND