1,1-Dichloroethylene
East Cocalico Township
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
50
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 | 0.125 ppb | 4 | 1 | ND - 0.500 ppb |
| 2019 | 0.625 ppb | 4 | 1 | ND - 2.50 ppb |
| 2020 | 0.975 ppb | 16 | 5 | ND - 5.40 ppb |
| 2021 | 0.667 ppb | 6 | 2 | ND - 2.20 ppb |
| 2022 | ND | 4 | 0 | ND |
| 2023 | 0.556 ppb | 16 | 4 | ND - 3.60 ppb |
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 |
|---|---|---|
| 2018-04-27 | 8045051-02RE | ND |
| 2018-04-27 | 8045051-08 | 0.500 ppb |
| 2018-04-27 | 8045051-11 | ND |
| 2018-04-27 | 8045051-10 | ND |
| 2019-04-29 | 9041601-06 | 2.50 ppb |
| 2019-04-29 | 9041601-08 | ND |
| 2019-04-29 | 9041601-09 | ND |
| 2019-04-29 | 9041601-02 | ND |
| 2020-05-01 | 22369768.00 | ND |
| 2020-05-01 | 22369747.00 | ND |
| 2020-05-01 | 22369724.00 | ND |
| 2020-05-01 | 22369701.00 | 3.90 ppb |
| 2020-05-01 | 22369678.00 | ND |
| 2020-05-01 | 22369655.00 | ND |
| 2020-05-01 | 22369632.00 | ND |
| 2020-05-01 | 22369609.00 | ND |
| 2020-05-01 | 22369586.00 | ND |
| 2020-05-01 | 22369541.00 | ND |
| 2020-05-01 | 22369563.00 | ND |
| 2020-05-11 | 22369509.00 | 2.70 ppb |
| 2020-09-25 | 23142980.00 | ND |
| 2020-10-22 | 23322769.00 | 5.40 ppb |
| 2020-10-29 | 23322727.00 | 2.60 ppb |
| 2020-11-20 | 23497283.00 | 1.000 ppb |
| 2021-03-10 | 24203662.00 | 2.20 ppb |
| 2021-04-08 | 24393854.00 | ND |
| 2021-04-08 | 24393833.00 | ND |
| 2021-04-08 | 24393804.00 | ND |
| 2021-04-08 | 24393881.00 | 1.80 ppb |
| 2021-07-14 | 24979178.00 | ND |
| 2022-04-08 | 26607723.00 | ND |
| 2022-04-08 | 26607768.00 | ND |
| 2022-04-08 | 26607747.00 | ND |
| 2022-04-08 | 26607696.00 | ND |
| 2023-01-11 | 28310395.00 | 2.50 ppb |
| 2023-01-11 | 28310368.00 | ND |
| 2023-01-11 | 28310440.00 | ND |
| 2023-01-11 | 28310419.00 | ND |
| 2023-04-12 | 28858502.00 | 3.60 ppb |
| 2023-04-12 | 28858501.00 | ND |
| 2023-04-12 | 28858499.00 | ND |
| 2023-04-12 | 28858500.00 | ND |
| 2023-07-12 | 29454835.00 | 2.20 ppb |
| 2023-09-13 | 29847925.00 | ND |
| 2023-09-13 | 29847927.00 | ND |
| 2023-09-13 | 29847930.00 | ND |
| 2023-09-13 | 29847928.00 | ND |
| 2023-09-13 | 29847929.00 | ND |
| 2023-09-13 | 29847926.00 | ND |
| 2023-10-25 | 30031832.00 | 0.600 ppb |