1,1,1,2-Tetrachloroethane
Quincy Water Department City Of
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
13
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 | N/A | 0 | 0 | N/A |
| 2019 | ND | 1 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 7 | 0 | ND |
| 2023 | ND | 3 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 1 ppb
The EWG Health Guideline of 1 ppb for 1,1,1,2-tetrachloroethane was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2019-10-02 | ND | |
| 2021-06-16 | 4132530 | ND |
| 2021-06-16 | 4131878 | ND |
| 2022-03-04 | 4258466 | ND |
| 2022-03-22 | 4258506 | ND |
| 2022-08-16 | 4338187 | ND |
| 2022-08-16 | 4338185 | ND |
| 2022-09-13 | 4344891 | ND |
| 2022-10-06 | 4356345 | ND |
| 2022-10-06 | 4356344 | ND |
| 2023-03-09 | 4427806 | ND |
| 2023-09-26 | 4526082 | ND |
| 2023-10-03 | 4526155 | ND |