cis-1,2-Dichloroethylene
Burlington Water Department
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.
41
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 | 4.75 ppb | 12 | 4 | ND - 16.0 ppb |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 7 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 6 | 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 | Result |
|---|---|
| 2014-03-04 | ND |
| 2014-03-04 | ND |
| 2014-06-05 | ND |
| 2014-06-05 | ND |
| 2014-06-17 | ND |
| 2014-07-01 | 13.0 ppb |
| 2014-07-01 | 15.0 ppb |
| 2014-07-02 | 13.0 ppb |
| 2014-07-02 | 16.0 ppb |
| 2014-09-05 | ND |
| 2014-09-10 | ND |
| 2014-11-20 | ND |
| 2015-02-24 | ND |
| 2015-02-24 | ND |
| 2015-06-02 | ND |
| 2015-07-10 | ND |
| 2015-10-16 | ND |
| 2016-01-04 | ND |
| 2016-01-11 | ND |
| 2016-02-18 | ND |
| 2016-02-18 | ND |
| 2016-05-24 | ND |
| 2016-07-15 | ND |
| 2016-10-13 | ND |
| 2017-02-22 | ND |
| 2017-03-17 | ND |
| 2017-03-17 | ND |
| 2017-04-03 | ND |
| 2017-08-28 | ND |
| 2017-12-29 | ND |
| 2018-03-14 | ND |
| 2018-06-29 | ND |
| 2018-07-23 | ND |
| 2018-08-29 | ND |
| 2018-11-27 | ND |
| 2019-02-05 | ND |
| 2019-02-07 | ND |
| 2019-07-02 | ND |
| 2019-09-20 | ND |
| 2019-10-29 | ND |
| 2019-12-23 | ND |