Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Hampton Shaler 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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.06 ppb21ND - 2.11 ppb
20191.18 ppb220.666 ppb - 1.70 ppb
20201.05 ppb111.05 ppb
20211.05 ppb221.000 ppb - 1.10 ppb
20220.290 ppb21ND - 0.580 ppb
20230.660 ppb220.610 ppb - 0.710 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
2018-07-1218G1226-012.11 ppb
2018-07-2618G2476-01ND
2019-07-0119G1202-011.70 ppb
2019-07-1919G2512-010.666 ppb
2020-07-2022699192.001.05 ppb
2021-07-1224922669.001.000 ppb
2021-07-1324922423.001.10 ppb
2022-07-1827131865.00ND
2022-07-1927132056.000.580 ppb
2023-08-2129791133.000.710 ppb
2023-08-2229790891.000.610 ppb