Know Your Environment. Protect Your Health.

1,1-Dichloroethylene

Alpine Lakes Ranch Water Company

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

 

18

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
2021ND10ND
2022ND90ND
2023ND30ND

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 Result
2018-08-07ND
2018-08-28ND
2019-08-13ND
2019-09-24ND
2020-11-11ND
2021-09-02ND
2022-02-21ND
2022-02-21ND
2022-05-09ND
2022-05-09ND
2022-07-21ND
2022-07-21ND
2022-11-17ND
2022-11-22ND
2022-11-22ND
2023-02-13ND
2023-02-13ND
2023-08-01ND