Know Your Environment. Protect Your Health.

1,1-Dichloroethylene

Columbia Heights Water District

1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.

 

12

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
2019ND80ND
2020N/A00N/A
2021N/A00N/A
2022ND40ND
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EPA Maximum Contaminant
Level (MCL): 7 ppb

The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2019-03-2535457368001ND
2019-03-2535457368002ND
2019-03-2535457368003ND
2019-03-2535457368001ND
2019-03-2535457368002ND
2019-03-2535457368003ND
2019-06-1935477220001ND
2019-06-1935477220001ND
2022-03-2935707357001ND
2022-03-2935707357002ND
2022-03-2935707357003ND
2022-03-2935707357004ND