Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Mars Borough Water Works

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.30 ppb112.30 ppb
20192.56 ppb112.56 ppb
20202.18 ppb112.18 ppb
20212.54 ppb332.23 ppb - 2.80 ppb
20221.19 ppb32ND - 1.92 ppb
20232.25 ppb331.76 ppb - 2.64 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 Lab ID Result
2018-07-1718G1584-012.30 ppb
2019-08-1619H2178-012.56 ppb
2020-11-1323454843.002.18 ppb
2021-12-0625861423.002.23 ppb
2021-12-0625861444.002.59 ppb
2021-12-0725861465.002.80 ppb
2022-05-1326754581.001.66 ppb
2022-08-0427346600.001.92 ppb
2022-08-0427346621.00ND
2023-05-0929011438.002.35 ppb
2023-06-0529214291.001.76 ppb
2023-09-0629801308.002.64 ppb