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.
24
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 |
|---|---|---|---|---|
| 2014 | 0.550 ppb | 2 | 2 | 0.400 ppb - 0.700 ppb |
| 2015 | ND | 2 | 0 | ND |
| 2016 | 0.122 ppb | 9 | 2 | ND - 0.600 ppb |
| 2017 | 0.113 ppb | 8 | 1 | ND - 0.900 ppb |
| 2018 | 0.350 ppb | 2 | 1 | ND - 0.700 ppb |
| 2019 | 0.800 ppb | 1 | 1 | 0.800 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2014-06-18 | 27849 | 0.700 ppb |
| 2014-08-13 | 36701 | 0.400 ppb |
| 2015-06-24 | 50001 | ND |
| 2015-09-21 | 70006 | ND |
| 2016-03-24 | ND | |
| 2016-03-24 | 0.600 ppb | |
| 2016-04-21 | ND | |
| 2016-04-21 | 0.500 ppb | |
| 2016-04-21 | ND | |
| 2016-09-01 | ND | |
| 2016-09-01 | ND | |
| 2016-09-22 | ND | |
| 2016-12-22 | ND | |
| 2017-06-06 | ND | |
| 2017-06-06 | ND | |
| 2017-06-06 | ND | |
| 2017-06-06 | ND | |
| 2017-06-06 | 0.900 ppb | |
| 2017-06-06 | ND | |
| 2017-06-06 | ND | |
| 2017-06-06 | ND | |
| 2018-08-14 | 0.700 ppb | |
| 2018-08-14 | ND | |
| 2019-07-31 | 0.800 ppb |