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.
15
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 |
|---|---|---|---|---|
| 2012 | 0.0756 ppb | 9 | 1 | ND - 0.680 ppb |
| 2013 | ND | 4 | 0 | ND |
| 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 |
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 |
|---|---|---|
| 2012-10-23 | 1942201 | ND |
| 2012-10-23 | 1942204 | ND |
| 2012-10-23 | 1942205 | ND |
| 2012-10-23 | 1942206 | ND |
| 2012-10-23 | 1942198 | ND |
| 2012-10-23 | 1942199 | 0.680 ppb |
| 2012-10-23 | 1942200 | ND |
| 2012-10-23 | 1942203 | ND |
| 2012-10-23 | 1942202 | ND |
| 2013-03-27 | 1968434 | ND |
| 2013-06-19 | 1985833 | ND |
| 2013-07-23 | 1993063 | ND |
| 2013-12-05 | 2023801 | ND |
| 2014-10-22 | 2088166 | 0.590 ppb |
| 2015-10-13 | 1J51068-01 | 1.03 ppb |