Know Your Environment. Protect Your Health.

1,1-Dichloroethylene

North Wales Water Authority

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

 

69

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND130ND
2019ND120ND
2020ND120ND
2021ND110ND
2022ND110ND
2023ND100ND

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
2018-03-1220180932ND
2018-03-1220180940ND
2018-03-1220180939ND
2018-03-1220180938ND
2018-03-1220180937ND
2018-03-1220180936ND
2018-03-1220180935ND
2018-03-1220180934ND
2018-03-1220180933ND
2018-03-1320180956ND
2018-06-0520182148ND
2018-09-0420183373ND
2018-12-1820184775ND
2019-03-0520190857ND
2019-03-1220190960ND
2019-03-1220190956ND
2019-03-1220190964ND
2019-03-1220190957ND
2019-03-1220190963ND
2019-03-1220190962ND
2019-03-1220190958ND
2019-03-1220190961ND
2019-03-1220190959ND
2019-09-0320193443ND
2019-12-0320194748ND
2020-03-0321849466.00ND
2020-03-0321849445.00ND
2020-03-0321849424.00ND
2020-03-0321849487.00ND
2020-03-0321849508.00ND
2020-03-0321849529.00ND
2020-03-0321849403.00ND
2020-03-0321849550.00ND
2020-06-0222418579.00ND
2020-06-0222418600.00ND
2020-09-0123001534.00ND
2020-12-0123539408.00ND
2021-03-0124062309.00ND
2021-03-0124062393.00ND
2021-03-0124062267.00ND
2021-03-0124062372.00ND
2021-03-0124062351.00ND
2021-03-0124062330.00ND
2021-03-0124062288.00ND
2021-03-0224062414.00ND
2021-06-0124640227.00ND
2021-09-0925222346.00ND
2021-12-1425766376.00ND
2022-03-0126289330.00ND
2022-03-0926289246.00ND
2022-03-0926289309.00ND
2022-03-0926289288.00ND
2022-03-0926289183.00ND
2022-03-0926289225.00ND
2022-03-0926289204.00ND
2022-03-0926289267.00ND
2022-06-0726844659.00ND
2022-09-2027443451.00ND
2022-12-0628000357.00ND
2023-03-0728523009.00ND
2023-03-0828522946.00ND
2023-03-0828522904.00ND
2023-03-0828522988.00ND
2023-03-0828522967.00ND
2023-03-0828522925.00ND
2023-06-0529110405.00ND
2023-06-1929110354.00ND
2023-09-1229701905.00ND
2023-11-1730073307.00ND