Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

City of Beaverton

NOTE: City of Beaverton purchases water from Joint Water Commission which is required to test for cis-1,2-dichloroethylene. Sample information shown below was taken by Joint Water Commission.

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND10ND
2021ND20ND
2022ND20ND
2023ND40ND

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

NOTE: City of Beaverton purchases water from Joint Water Commission which is required to test for cis-1,2-dichloroethylene. Sample information shown below was taken by Joint Water Commission.

Date Lab ID Result
2018-02-071809141-VND
2018-11-051884309-VND
2019-04-241928990-VND
2019-11-041981259-VND
2020-04-012021410-VND
2020-11-042074464-VND
2021-04-072123196-VND
2021-11-032180746-VND
2022-03-312221620-VND
2022-11-0222-71086-VND
2023-04-1023-19659-VND
2023-11-0623-67462-VND