cis-1,2-Dichloroethylene
Sandwich
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 |
|---|---|---|---|---|
| 2014 | 1.56 ppb | 2 | 2 | 1.24 ppb - 1.88 ppb |
| 2015 | 1.49 ppb | 2 | 2 | 1.32 ppb - 1.66 ppb |
| 2016 | 1.23 ppb | 3 | 3 | 1.20 ppb - 1.30 ppb |
| 2017 | 0.450 ppb | 2 | 1 | ND - 0.900 ppb |
| 2018 | 0.395 ppb | 2 | 1 | ND - 0.790 ppb |
| 2019 | 0.190 ppb | 4 | 1 | ND - 0.760 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 |
|---|---|---|
| 2014-04-21 | 1404C24-001A | 1.24 ppb |
| 2014-07-23 | 1407G93-001A | 1.88 ppb |
| 2015-04-29 | 1505021-001A | 1.66 ppb |
| 2015-10-19 | 1510G88-001A | 1.32 ppb |
| 2016-04-21 | 6043467-01 | 1.20 ppb |
| 2016-07-27 | 6074594-01 | 1.20 ppb |
| 2016-07-27 | 6074594-02 | 1.30 ppb |
| 2017-04-05 | 7042225-01 | 0.900 ppb |
| 2017-07-26 | 7075326-01 | ND |
| 2018-04-17 | 8043700-02 | 0.790 ppb |
| 2018-07-17 | 8073837-01 | ND |
| 2019-05-23 | 9054916-01 | 0.760 ppb |
| 2019-08-08 | 9081959-01 | ND |
| 2019-08-08 | 9081959-02 | ND |
| 2019-10-17 | 9103869-01 | ND |