cis-1,2-Dichloroethylene
Urbandale Water Utility
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 | 0.600 ppb | 1 | 1 | 0.600 ppb |
| 2017 | 0.500 ppb | 1 | 1 | 0.500 ppb |
| 2018 | 0.500 ppb | 1 | 1 | 0.500 ppb |
| 2019 | 0.600 ppb | 4 | 4 | 0.500 ppb - 0.700 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 |
|---|---|---|
| 2016-02-16 | OE345861 | 0.600 ppb |
| 2017-11-16 | OE591602 | 0.500 ppb |
| 2018-11-19 | OE742048 | 0.500 ppb |
| 2019-05-07 | OE804783 | 0.600 ppb |
| 2019-05-07 | OE804784 | 0.700 ppb |
| 2019-05-07 | OE804785 | 0.500 ppb |
| 2019-11-13 | OE893528 | 0.600 ppb |