cis-1,2-Dichloroethylene
Parker Little River Water System
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.
12
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 | 1.25 ppb | 4 | 4 | 1.000 ppb - 1.50 ppb |
| 2015 | 1.25 ppb | 4 | 4 | 1.000 ppb - 1.50 ppb |
| 2016 | 1.40 ppb | 1 | 1 | 1.40 ppb |
| 2017 | 1.60 ppb | 1 | 1 | 1.60 ppb |
| 2018 | 1.90 ppb | 1 | 1 | 1.90 ppb |
| 2019 | 1.70 ppb | 1 | 1 | 1.70 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 |
|---|---|---|
| 2014-01-09 | AI26220 | 1.50 ppb |
| 2014-04-08 | AI37323 | 1.40 ppb |
| 2014-07-09 | AI45160 | 1.000 ppb |
| 2014-10-07 | AI56845 | 1.10 ppb |
| 2015-01-23 | AI63333 | 1.50 ppb |
| 2015-04-10 | AI74597 | 1.20 ppb |
| 2015-07-10 | AI82489 | 1.000 ppb |
| 2015-10-12 | AI92660 | 1.30 ppb |
| 2016-02-10 | AJ06225 | 1.40 ppb |
| 2017-05-11 | AJ55238 | 1.60 ppb |
| 2018-02-12 | AJ83628 | 1.90 ppb |
| 2019-03-07 | AK12889 | 1.70 ppb |