Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Upper Hanover 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.

 

50

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND50ND
2020ND90ND
2021ND100ND
2022ND130ND
2023ND70ND

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
2018-01-308001978-01ND
2018-04-258008140-01ND
2018-07-178017906-01ND
2018-07-258019752-01ND
2018-07-258019752-02ND
2018-10-108028641-01ND
2019-01-238038660-01ND
2019-05-079009685-01ND
2019-08-218038658-01ND
2019-09-249034252-01ND
2019-12-119033962-01ND
2020-03-1821847890.00ND
2020-03-2021847916.00ND
2020-03-2021847915.00ND
2020-04-2822024157.00ND
2020-04-2822024156.00ND
2020-06-2422417291.00ND
2020-07-0122417292.00ND
2020-10-0623183405.00ND
2020-11-2023362962.00ND
2021-03-1624061084.00ND
2021-03-1924061085.00ND
2021-04-2124248439.00ND
2021-04-3024248591.00ND
2021-07-0624829850.00ND
2021-07-0924830003.00ND
2021-10-0525405584.00ND
2021-10-2925405741.00ND
2021-12-2925765019.00ND
2021-12-2925764998.00ND
2022-02-0125943598.00ND
2022-02-0125943597.00ND
2022-02-0125943599.00ND
2022-02-2326118533.00ND
2022-02-2326118534.00ND
2022-05-0526649352.00ND
2022-05-0626649353.00ND
2022-06-0226649530.00ND
2022-06-0326649531.00ND
2022-07-0727037971.00ND
2022-07-0827037972.00ND
2022-12-0127999400.00ND
2022-12-0227999401.00ND
2023-01-0428173523.00ND
2023-04-1028703145.00ND
2023-04-1128703144.00ND
2023-04-1128703143.00ND
2023-07-0329302584.00ND
2023-10-0329700858.00ND
2023-11-2830246495.00ND