1,1-Dichloroethylene
Town of Ferriday Water System
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
20
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 | ND | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 8 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 8 | 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 |
|---|---|---|
| 2014-03-17 | AD89796 | ND |
| 2014-03-17 | AD89796 | ND |
| 2015-08-17 | 35203233006 | ND |
| 2015-08-17 | 35203233006 | ND |
| 2016-10-13 | 35270878004 | ND |
| 2016-10-13 | 35270878001 | ND |
| 2016-10-13 | 35270878002 | ND |
| 2016-10-13 | 35270878003 | ND |
| 2016-10-13 | 35270878004 | ND |
| 2016-10-13 | 35270878003 | ND |
| 2016-10-13 | 35270878002 | ND |
| 2016-10-13 | 35270878001 | ND |
| 2019-09-16 | 35498099001 | ND |
| 2019-09-16 | 35498099004 | ND |
| 2019-09-16 | 35498099003 | ND |
| 2019-09-16 | 35498099002 | ND |
| 2019-09-16 | 35498099001 | ND |
| 2019-09-16 | 35498099004 | ND |
| 2019-09-16 | 35498099003 | ND |
| 2019-09-16 | 35498099002 | ND |