1,1,1,2-Tetrachloroethane
Watchtower Bible Tract Society
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
18
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 | 1 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 7 | 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 |
|---|---|---|
| 2018-07-31 | 420-140368-1POCS | ND |
| 2019-08-08 | 420-158308-4POCS | ND |
| 2019-08-08 | 420-158308-1POCS | ND |
| 2020-07-21 | 420-202527-5POCS | ND |
| 2021-07-21 | 420-202527-11POCS | ND |
| 2021-07-21 | 420-202527-9POCS | ND |
| 2021-07-21 | 420-202527-1POCS | ND |
| 2021-07-21 | 420-202527-13POCS | ND |
| 2021-07-21 | 420-202527-7POCS | ND |
| 2021-07-21 | 420-202527-3POCS | ND |
| 2022-11-21 | L2265663POCS | ND |
| 2023-06-28 | L2337410-06POCS | ND |
| 2023-06-28 | L2337410-07POCS | ND |
| 2023-06-28 | L2337410-05POCS | ND |
| 2023-06-29 | L2337410-04POCS | ND |
| 2023-06-29 | L2337410-03POCS | ND |
| 2023-06-29 | L2337410-01POCS | ND |
| 2023-06-29 | L2337410-02POCS | ND |