cis-1,2-Dichloroethylene
Waterloo Water Works
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.
10
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 | 0.590 ppb | 1 | 1 | 0.590 ppb |
| 2015 | 1.03 ppb | 1 | 1 | 1.03 ppb |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 8 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-10-22 | 2088166 | 0.590 ppb |
| 2015-10-13 | 1J51068-01 | 1.03 ppb |
| 2018-10-02 | 1J80462-01 | ND |
| 2018-10-02 | 1J80470-01 | ND |
| 2018-10-02 | 1J80478-01 | ND |
| 2018-10-02 | 1J80498-01 | ND |
| 2018-10-03 | 1J80467-01 | ND |
| 2018-10-03 | 1J80483-01 | ND |
| 2018-10-03 | 1J80489-01 | ND |
| 2018-10-03 | 1J80493-01 | ND |