Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

City of Wilsonville

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND40ND
2021ND30ND
2022ND20ND
2023ND20ND

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
2018-01-10201712040042-VND
2018-04-11201803050004-VND
2018-07-18201807190944-VND
2018-10-10201809030045-VND
2019-01-09201812030009-VND
2019-04-10201904110241-VND
2019-07-10201907110430-VND
2019-10-08201910090408-VND
2020-01-02202001030119-VND
2020-04-15202004160157-VND
2020-07-15202007160188-VND
2020-10-14202010150105-VND
2021-01-06202101070374-VND
2021-04-14202104150878-VND
2021-07-27202107280247-VND
2022-02-02202202030907-VND
2022-04-13202204140832-VND
2023-01-11380-34174-2-VND
2023-04-05380-42711-2-VND