1,1-Dichloroethylene
Perkasie Regional Authority
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
57
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 | 0.173 ppb | 11 | 2 | ND - 1.20 ppb |
| 2015 | 0.318 ppb | 11 | 3 | ND - 1.80 ppb |
| 2016 | 0.264 ppb | 11 | 4 | ND - 1.000 ppb |
| 2017 | 0.180 ppb | 10 | 3 | ND - 0.600 ppb |
| 2018 | ND | 7 | 0 | ND |
| 2019 | ND | 7 | 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 |
|---|---|---|
| 2014-03-11 | L2515685-1 | 0.700 ppb |
| 2014-03-11 | L2515685-2 | ND |
| 2014-06-10 | L5101092-11 | 1.20 ppb |
| 2014-06-10 | L5101092-12 | ND |
| 2014-09-09 | L5170431-1 | ND |
| 2014-09-09 | L5170431-3 | ND |
| 2014-09-09 | L5170431-5 | ND |
| 2014-09-09 | L5170431-2 | ND |
| 2014-09-09 | L5170431-4 | ND |
| 2014-12-09 | L5292845-1 | ND |
| 2014-12-09 | L5292845-2 | ND |
| 2015-03-10 | 12501688 | 1.80 ppb |
| 2015-03-10 | 12501742 | ND |
| 2015-06-09 | 12867677 | 1.000 ppb |
| 2015-06-09 | 12867731 | ND |
| 2015-09-08 | 13250109 | 0.700 ppb |
| 2015-09-08 | 13250217 | ND |
| 2015-09-08 | 13250163 | ND |
| 2015-09-08 | 13250271 | ND |
| 2015-09-08 | 13250325 | ND |
| 2015-12-08 | 13619646 | ND |
| 2015-12-08 | 13619700 | ND |
| 2016-03-08 | 13972796 | ND |
| 2016-03-08 | 13972744 | 0.700 ppb |
| 2016-06-07 | 14389113 | ND |
| 2016-06-07 | 14389061 | 0.600 ppb |
| 2016-09-13 | 14889459 | 1.000 ppb |
| 2016-09-13 | 14889615 | ND |
| 2016-09-13 | 14889563 | ND |
| 2016-09-13 | 14889667 | ND |
| 2016-09-13 | 14889511 | ND |
| 2016-12-06 | 15356021 | 0.600 ppb |
| 2016-12-06 | 15356073 | ND |
| 2017-03-07 | 15780127 | 0.600 ppb |
| 2017-03-07 | 15780179 | ND |
| 2017-06-06 | 16240752 | 0.600 ppb |
| 2017-06-06 | 16240804 | ND |
| 2017-09-05 | 16711069 | ND |
| 2017-09-05 | 16710965 | ND |
| 2017-09-05 | 16711017 | ND |
| 2017-09-05 | 16710913 | 0.600 ppb |
| 2017-12-05 | 17146808 | ND |
| 2017-12-05 | 17146860 | ND |
| 2018-03-06 | 8024485-02 | ND |
| 2018-06-04 | 8052857-02 | ND |
| 2018-09-04 | 8084662-02 | ND |
| 2018-09-17 | 8093548-03 | ND |
| 2018-09-17 | 8093548-02 | ND |
| 2018-09-17 | 8093548-01 | ND |
| 2018-12-03 | 8110453-02RE | ND |
| 2019-03-05 | 9023322-02 | ND |
| 2019-06-04 | 9053891-02 | ND |
| 2019-09-03 | 9084135-02 | ND |
| 2019-11-11 | 9111441-02 | ND |
| 2019-11-11 | 9111441-03 | ND |
| 2019-11-11 | 9111441-01 | ND |
| 2019-12-03 | 9113323-02 | ND |