1,1,1,2-Tetrachloroethane
Glencoe Water Works Board
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
14
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | 0.500 ppb | 2 | 2 | 0.500 ppb |
| 2022 | ND | 2 | 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 |
|---|---|---|
| 2018-02-05 | 1802-00039-3 | ND |
| 2018-02-05 | 1802-00039-5 | ND |
| 2019-03-12 | 1903-00245-002 | ND |
| 2019-03-12 | 1903-00245-004 | ND |
| 2020-02-17 | 2002-00306-002 | ND |
| 2020-02-17 | 2002-00306-004 | ND |
| 2020-02-17 | 2002-00306-006 | ND |
| 2021-02-22 | 2102-00357-003 | 0.500 ppb |
| 2021-02-22 | 2102-00357-008 | 0.500 ppb |
| 2022-02-17 | 2202-00348-003 | ND |
| 2022-02-17 | 2202-00348-005 | ND |
| 2023-01-30 | 2301-00501-002 | ND |
| 2023-01-30 | 2301-00501-004 | ND |
| 2023-01-30 | 2301-00501-006 | ND |