cis-1,2-Dichloroethylene
City of Petaluma
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 6 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 1 | 0 | ND |
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 |
|---|---|---|
| 2015-03-19 | 1610-057-1400 | ND |
| 2015-06-18 | 1610-009-0915 | ND |
| 2015-06-18 | 1610-028-1030 | ND |
| 2015-06-18 | 1610-031-1300 | ND |
| 2015-09-23 | 1610-012-0800 | ND |
| 2015-09-23 | 1610-032-1120 | ND |
| 2016-03-09 | 1610-026-1045 | ND |
| 2016-03-09 | 1610-027-1105 | ND |
| 2016-03-09 | 1610-029-0930 | ND |
| 2016-06-22 | 1610-030-1145 | ND |
| 2016-09-22 | 1610-051-1120 | ND |
| 2019-03-13 | 1610-055-1108 | ND |