1,1-Dichloroethylene
Richland Township Water Authority
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
22
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 | 3 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | 0.175 ppb | 4 | 1 | ND - 0.700 ppb |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2014-05-15 | 14050658-02 | ND |
| 2014-05-15 | 14050658-01 | ND |
| 2014-09-25 | 14091904-01 | ND |
| 2015-02-10 | 12392445 | ND |
| 2015-04-23 | 12871977 | ND |
| 2015-04-23 | 12871978 | ND |
| 2015-06-09 | 12872163 | ND |
| 2015-09-28 | 13380552 | ND |
| 2015-12-08 | 13624272 | ND |
| 2016-02-16 | 13861557 | ND |
| 2016-03-15 | 13977446 | ND |
| 2016-04-12 | 14092305 | 0.700 ppb |
| 2016-04-12 | 14092284 | ND |
| 2017-09-11 | 16716491 | ND |
| 2017-09-11 | 16716514 | ND |
| 2017-09-11 | 16716464 | ND |
| 2018-10-15 | 8033560-01 | ND |
| 2018-10-15 | 8033560-02 | ND |
| 2018-10-15 | 8033560-03 | ND |
| 2019-10-07 | 9032226-01 | ND |
| 2019-10-07 | 9032226-02 | ND |
| 2019-10-07 | 9032226-03 | ND |