1,1-Dichloroethylene
Natchitoches Water System
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
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 | ND | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 7 ppb
The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-04-14 | AD90602 | ND |
| 2014-04-14 | AD90602 | ND |
| 2015-04-06 | 35182791007 | ND |
| 2015-04-06 | 35182791007 | ND |
| 2016-04-12 | 35239164010 | ND |
| 2016-04-12 | 35239164010 | ND |
| 2017-04-10 | 35306447004 | ND |
| 2017-04-10 | 35306447004 | ND |
| 2018-01-22 | 35370029001 | ND |
| 2018-01-22 | 35370029001 | ND |
| 2019-02-25 | 35450970001 | ND |
| 2019-02-25 | 35450970001 | ND |