Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Spring Park

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.313 ppb42ND - 0.630 ppb
20190.250 ppb64ND - 0.590 ppb
20200.157 ppb32ND - 0.260 ppb
20210.220 ppb21ND - 0.440 ppb
20221.28 ppb330.450 ppb - 1.90 ppb
20230.798 ppb550.360 ppb - 1.30 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
2018-02-2718B1222-01ND
2018-04-2618D1558-01ND
2018-11-1318K0569-010.630 ppb
2018-12-1818L0646-010.620 ppb
2019-01-2919A0922-010.280 ppb
2019-02-1919B0810-01ND
2019-03-2219C0967-010.240 ppb
2019-05-1019E0822-01ND
2019-10-0119J0043-010.590 ppb
2019-11-0519K0180-010.390 ppb
2020-01-0720A0112-01ND
2020-06-0320F0243-010.210 ppb
2020-08-0420H0088-010.260 ppb
2021-04-2821D1668-010.440 ppb
2021-11-0421K0345-01ND
2022-06-1622F1024-011.90 ppb
2022-07-1822G1075-010.450 ppb
2022-11-1822K0868-011.50 ppb
2023-02-2823C0047-010.780 ppb
2023-02-2823C0047-031.10 ppb
2023-05-0123E0055-011.30 ppb
2023-08-2223H2301-010.450 ppb
2023-10-2023J1098-010.360 ppb