cis-1,2-Dichloroethylene
Henderson Municipal Water & Sewer
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.
17
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 | ND | 4 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 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 |
|---|---|---|
| 2014-03-06 | 2987187 | ND |
| 2014-04-02 | 3002475 | ND |
| 2014-08-04 | 3077512 | ND |
| 2014-10-06 | 3117914 | ND |
| 2015-02-03 | 3181349 | ND |
| 2015-05-06 | 3238321 | ND |
| 2015-08-05 | 3294629 | ND |
| 2015-10-05 | 3337606 | ND |
| 2016-02-01 | 3395980 | ND |
| 2016-05-03 | 3443295 | ND |
| 2016-09-08 | 3544380 | ND |
| 2016-12-08 | 3603522 | ND |
| 2017-03-07 | 3651173 | ND |
| 2017-04-10 | 3673249 | ND |
| 2018-01-17 | 680-147846-3 | ND |
| 2018-01-17 | 680-147846-4 | ND |
| 2019-02-13 | 9020435-01 | ND |