Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Coraopolis Water & Sewer 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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20183.60 ppb113.60 ppb
20194.60 ppb114.60 ppb
20202.67 ppb331.40 ppb - 3.70 ppb
20213.35 ppb442.30 ppb - 4.50 ppb
20225.03 ppb334.50 ppb - 6.00 ppb
20234.60 ppb114.60 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
2018-05-148054022-013.60 ppb
2019-05-309055519-014.60 ppb
2020-04-0722115697.003.70 ppb
2020-05-1922308730.002.90 ppb
2020-10-1923269383.001.40 ppb
2021-06-2824921589.002.30 ppb
2021-10-0125308349.004.10 ppb
2021-10-0125308368.002.50 ppb
2021-12-2225850468.004.50 ppb
2022-03-0126197359.004.60 ppb
2022-05-2426742038.006.00 ppb
2022-09-1627539232.004.50 ppb
2023-06-0529204038.004.60 ppb