cis-1,2-Dichloroethylene
Clive Water Department
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.
7
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 | ND | 5 | 0 | ND |
| 2015 | 0.200 ppb | 6 | 2 | ND - 0.700 ppb |
| 2016 | 0.567 ppb | 3 | 3 | 0.500 ppb - 0.600 ppb |
| 2017 | 0.140 ppb | 5 | 1 | ND - 0.700 ppb |
| 2018 | 0.458 ppb | 12 | 6 | ND - 1.40 ppb |
| 2019 | 1.13 ppb | 4 | 4 | 1.000 ppb - 1.30 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 |
|---|---|---|
| 2016-01-04 | OE331712 | 0.500 ppb |
| 2016-01-04 | OE331716 | 0.600 ppb |
| 2016-01-04 | OE331717 | 0.600 ppb |
| 2019-04-08 | OE790946 | 1.20 ppb |
| 2019-04-08 | OE790947 | 1.000 ppb |
| 2019-04-08 | OE790948 | 1.000 ppb |
| 2019-04-08 | OE790949 | 1.30 ppb |