Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Palmer Water District No.1

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.

 

42

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20183.10 ppb61ND - 18.6 ppb
20193.50 ppb61ND - 21.0 ppb
20202.13 ppb81ND - 17.0 ppb
20211.75 ppb81ND - 14.0 ppb
20221.10 ppb71ND - 7.70 ppb
20231.16 ppb71ND - 8.10 ppb

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 Result
2018-08-06ND
2018-08-14ND
2018-08-1418.6 ppb
2018-08-14ND
2018-08-14ND
2018-08-14ND
2019-08-12ND
2019-08-13ND
2019-08-1321.0 ppb
2019-08-13ND
2019-08-13ND
2019-11-19ND
2020-01-15ND
2020-04-08ND
2020-09-09ND
2020-09-09ND
2020-09-0917.0 ppb
2020-09-09ND
2020-09-09ND
2020-12-03ND
2021-01-07ND
2021-04-06ND
2021-07-2714.0 ppb
2021-07-27ND
2021-07-27ND
2021-07-27ND
2021-07-27ND
2021-11-09ND
2022-01-05ND
2022-04-05ND
2022-07-127.70 ppb
2022-07-12ND
2022-07-12ND
2022-07-12ND
2022-07-12ND
2023-03-07ND
2023-07-18ND
2023-07-18ND
2023-07-18ND
2023-07-18ND
2023-07-188.10 ppb
2023-10-17ND