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
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.350 ppb | 2 | 1 | ND - 0.700 ppb |
| 2019 | 0.800 ppb | 1 | 1 | 0.800 ppb |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 0.310 ppb | 5 | 2 | ND - 0.850 ppb |
| 2022 | 0.335 ppb | 2 | 1 | ND - 0.670 ppb |
| 2023 | 0.335 ppb | 6 | 2 | ND - 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 |
|---|---|---|
| 2018-08-14 | 0.700 ppb | |
| 2018-08-14 | ND | |
| 2019-07-31 | 0.800 ppb | |
| 2021-04-07 | 4213550 | 0.700 ppb |
| 2021-04-07 | 4213549 | ND |
| 2021-11-17 | 4207231 | 0.850 ppb |
| 2021-11-19 | 4207598 | ND |
| 2021-11-19 | 4207599 | ND |
| 2022-04-06 | 4274425 | 0.670 ppb |
| 2022-09-28 | 4370669 | ND |
| 2023-04-13 | 4441715 | 0.900 ppb |
| 2023-05-03 | 4452074 | 1.11 ppb |
| 2023-06-14 | 4470352 | ND |
| 2023-06-14 | 4470351 | ND |
| 2023-06-15 | 4470350 | ND |
| 2023-09-06 | 4514768 | ND |