Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Jblm Mcchord Field

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.350 ppb21ND - 0.700 ppb
20190.800 ppb110.800 ppb
2020N/A00N/A
20210.310 ppb52ND - 0.850 ppb
20220.335 ppb21ND - 0.670 ppb
20230.335 ppb62ND - 1.11 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
2018-08-140.700 ppb
2018-08-14ND
2019-07-310.800 ppb
2021-04-0742135500.700 ppb
2021-04-074213549ND
2021-11-1742072310.850 ppb
2021-11-194207598ND
2021-11-194207599ND
2022-04-0642744250.670 ppb
2022-09-284370669ND
2023-04-1344417150.900 ppb
2023-05-0344520741.11 ppb
2023-06-144470352ND
2023-06-144470351ND
2023-06-154470350ND
2023-09-064514768ND