1,1-Dichloroethylene
Pennsylvania American Royersford
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
29
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 |
|---|---|---|---|---|
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 5 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-04-11 | 39073401 | ND |
| 2018-04-11 | 39072901 | ND |
| 2018-04-11 | 39074201 | ND |
| 2018-04-11 | 39073001 | ND |
| 2019-04-08 | 43660501 | ND |
| 2019-04-08 | 43660601 | ND |
| 2019-04-08 | 43659301 | ND |
| 2019-04-23 | 43659401 | ND |
| 2020-04-02 | 22016203.00 | ND |
| 2020-04-02 | 22016087.00 | ND |
| 2020-04-02 | 22016159.00 | ND |
| 2020-04-02 | 22016182.00 | ND |
| 2020-04-02 | 22016138.00 | ND |
| 2021-04-01 | 24241276.00 | ND |
| 2021-04-01 | 24241297.00 | ND |
| 2021-04-01 | 24241320.00 | ND |
| 2021-08-05 | 25016541.00 | ND |
| 2021-10-14 | 25398554.00 | ND |
| 2021-11-11 | 25582466.00 | ND |
| 2022-02-09 | 26111841.00 | ND |
| 2022-04-14 | 26458203.00 | ND |
| 2022-04-14 | 26458168.00 | ND |
| 2022-04-14 | 26458226.00 | ND |
| 2022-05-12 | 26641724.00 | ND |
| 2023-04-19 | 28695804.00 | ND |
| 2023-04-19 | 28695872.00 | ND |
| 2023-04-19 | 28695783.00 | ND |
| 2023-04-19 | 28695825.00 | ND |
| 2023-04-19 | 28695846.00 | ND |