Know Your Environment. Protect Your Health.

1,1-Dichloroethylene

East Hampton WPCA - Royal Oaks System

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

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND30ND
2020ND30ND
20210.200 ppb31ND - 0.600 ppb
2022ND30ND
20230.767 ppb31ND - 2.30 ppb

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
2018-03-13116550GEND
2018-03-13116549GEND
2019-07-12126042ND
2019-09-24127776ND
2019-09-24127777ND
2020-02-25130648ND
2020-02-25130649ND
2020-07-20133620ND
2021-07-271413330.600 ppb
2021-12-28144447ND
2021-12-28144448ND
2022-07-25149799ND
2022-10-12152056ND
2022-10-12152057ND
2023-07-281614112.30 ppb
2023-09-28163605ND
2023-12-28166829ND