cis-1,2-Dichloroethylene
North Wales Water Authority
1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.
69
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 13 | 0 | ND |
| 2019 | ND | 12 | 0 | ND |
| 2020 | ND | 12 | 0 | ND |
| 2021 | ND | 11 | 0 | ND |
| 2022 | ND | 11 | 0 | ND |
| 2023 | ND | 10 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 70 ppb
The legal limit for cis-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-12 | 20180932 | ND |
| 2018-03-12 | 20180940 | ND |
| 2018-03-12 | 20180939 | ND |
| 2018-03-12 | 20180938 | ND |
| 2018-03-12 | 20180937 | ND |
| 2018-03-12 | 20180936 | ND |
| 2018-03-12 | 20180935 | ND |
| 2018-03-12 | 20180934 | ND |
| 2018-03-12 | 20180933 | ND |
| 2018-03-13 | 20180956 | ND |
| 2018-06-05 | 20182148 | ND |
| 2018-09-04 | 20183373 | ND |
| 2018-12-18 | 20184775 | ND |
| 2019-03-05 | 20190857 | ND |
| 2019-03-12 | 20190960 | ND |
| 2019-03-12 | 20190956 | ND |
| 2019-03-12 | 20190964 | ND |
| 2019-03-12 | 20190957 | ND |
| 2019-03-12 | 20190963 | ND |
| 2019-03-12 | 20190962 | ND |
| 2019-03-12 | 20190958 | ND |
| 2019-03-12 | 20190961 | ND |
| 2019-03-12 | 20190959 | ND |
| 2019-09-03 | 20193443 | ND |
| 2019-12-03 | 20194748 | ND |
| 2020-03-03 | 21849460.00 | ND |
| 2020-03-03 | 21849439.00 | ND |
| 2020-03-03 | 21849418.00 | ND |
| 2020-03-03 | 21849481.00 | ND |
| 2020-03-03 | 21849502.00 | ND |
| 2020-03-03 | 21849523.00 | ND |
| 2020-03-03 | 21849397.00 | ND |
| 2020-03-03 | 21849544.00 | ND |
| 2020-06-02 | 22418573.00 | ND |
| 2020-06-02 | 22418594.00 | ND |
| 2020-09-01 | 23001528.00 | ND |
| 2020-12-01 | 23539402.00 | ND |
| 2021-03-01 | 24062303.00 | ND |
| 2021-03-01 | 24062387.00 | ND |
| 2021-03-01 | 24062261.00 | ND |
| 2021-03-01 | 24062366.00 | ND |
| 2021-03-01 | 24062345.00 | ND |
| 2021-03-01 | 24062324.00 | ND |
| 2021-03-01 | 24062282.00 | ND |
| 2021-03-02 | 24062408.00 | ND |
| 2021-06-01 | 24640221.00 | ND |
| 2021-09-09 | 25222340.00 | ND |
| 2021-12-14 | 25766370.00 | ND |
| 2022-03-01 | 26289324.00 | ND |
| 2022-03-09 | 26289240.00 | ND |
| 2022-03-09 | 26289303.00 | ND |
| 2022-03-09 | 26289282.00 | ND |
| 2022-03-09 | 26289177.00 | ND |
| 2022-03-09 | 26289219.00 | ND |
| 2022-03-09 | 26289198.00 | ND |
| 2022-03-09 | 26289261.00 | ND |
| 2022-06-07 | 26844653.00 | ND |
| 2022-09-20 | 27443445.00 | ND |
| 2022-12-06 | 28000351.00 | ND |
| 2023-03-07 | 28523003.00 | ND |
| 2023-03-08 | 28522940.00 | ND |
| 2023-03-08 | 28522898.00 | ND |
| 2023-03-08 | 28522982.00 | ND |
| 2023-03-08 | 28522961.00 | ND |
| 2023-03-08 | 28522919.00 | ND |
| 2023-06-05 | 29110395.00 | ND |
| 2023-06-19 | 29110348.00 | ND |
| 2023-09-12 | 29701899.00 | ND |
| 2023-11-17 | 30073301.00 | ND |