Know Your Environment. Protect Your Health.

1,1-Dichloroethylene

Guilford Water Authority

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

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND10ND
2020ND30ND
2021ND50ND
2022ND10ND
2023ND70ND

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
2018-05-29(104)ND
2018-09-04(104)ND
2018-12-11(104)ND
2019-03-05(104)ND
2020-11-0223491226.00ND
2020-11-0223491205.00ND
2020-11-0223491184.00ND
2021-03-0924197197.00ND
2021-03-0924197218.00ND
2021-03-2924197240.00ND
2021-03-2924197261.00ND
2021-11-0425719754.00ND
2022-04-2526601195.00ND
2023-05-1729053145.00ND
2023-05-1729053166.00ND
2023-05-2429053216.00ND
2023-05-2429053195.00ND
2023-08-0129447931.00ND
2023-08-0129447951.00ND
2023-08-0129447911.00ND