1,1-Dichloroethylene
Coraopolis Water & Sewer Authority
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
8
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 | 0.527 ppb | 1 | 1 | 0.527 ppb |
| 2015 | ND | 2 | 0 | ND |
| 2016 | 0.400 ppb | 2 | 1 | ND - 0.800 ppb |
| 2017 | 0.700 ppb | 1 | 1 | 0.700 ppb |
| 2018 | 0.500 ppb | 1 | 1 | 0.500 ppb |
| 2019 | 0.600 ppb | 1 | 1 | 0.600 ppb |
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 |
|---|---|---|
| 2014-05-27 | 14060076-001 | 0.527 ppb |
| 2015-04-08 | 12691380 | ND |
| 2015-08-24 | 13197132 | ND |
| 2016-06-13 | 14486018 | 0.800 ppb |
| 2016-12-19 | 15441874 | ND |
| 2017-05-08 | 16173492 | 0.700 ppb |
| 2018-05-14 | 8054022-01 | 0.500 ppb |
| 2019-05-30 | 9055519-01 | 0.600 ppb |