1,1,1,2-Tetrachloroethane
Tahoe Keys Water Company
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
7
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 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2022-02-16 | CA0910015_001_001-202202161100 | ND |
| 2022-02-16 | CA0910015_003_003-202202161000 | ND |
| 2022-02-16 | CA0910015_002_002-202202161200 | ND |
| 2022-06-07 | CA0910015_010_010-202206070925 | ND |
| 2022-06-07 | CA0910015_002_002-202206070925 | ND |
| 2023-11-14 | CA0910015_002_002-202311140915 | ND |
| 2023-11-14 | CA0910015_007_007-202311140915 | ND |