1,1,1,2-Tetrachloroethane
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1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
8
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 | ND | 1 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 1 | 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 |
|---|---|---|
| 2019-09-09 | EHS1900045299-POC | ND |
| 2020-12-14 | EHS2000286572-SR-1 | ND |
| 2021-08-17 | EHS2100082063POC | ND |
| 2021-09-13 | EHS2100088686-01 | ND |
| 2022-07-05 | EHS2200031120-SR-1 | ND |
| 2023-08-14 | EHS2300047184-SR2 | ND |
| 2023-09-13 | EHS2300053516-01 | ND |
| 2023-10-24 | 2316294-001 | ND |