Know Your Environment. Protect Your Health.

1,1-Dichloroethylene

Montmorenci Water District

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

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.26 ppb440.900 ppb - 1.64 ppb
20191.05 ppb440.700 ppb - 1.32 ppb
20200.905 ppb440.700 ppb - 1.11 ppb
20210.829 ppb440.750 ppb - 0.975 ppb
20220.698 ppb54ND - 1.07 ppb
20230.845 ppb330.700 ppb - 0.930 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
2018-02-27AE083221.24 ppb
2018-05-23AE126551.25 ppb
2018-08-22AE170630.900 ppb
2018-11-13AE212201.64 ppb
2019-02-20AE260331.06 ppb
2019-04-30AE295431.13 ppb
2019-08-27AE361670.700 ppb
2019-11-05AE397061.32 ppb
2020-01-14AE428500.800 ppb
2020-04-08AE470440.700 ppb
2020-08-25AE533921.11 ppb
2020-10-07AE554721.01 ppb
2021-02-03AE605740.830 ppb
2021-04-07AE637740.750 ppb
2021-08-25AE710410.760 ppb
2021-11-09AE748520.975 ppb
2022-02-23AE795241.07 ppb
2022-04-07AE818320.660 ppb
2022-04-07AE81833ND
2022-08-24AE888620.960 ppb
2022-11-02AE924540.800 ppb
2023-02-01AE963290.905 ppb
2023-04-05AE997120.700 ppb
2023-10-04AF096760.930 ppb