1,1,1,2-Tetrachloroethane
Sky Harbour Water Supply Corporation
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
12
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 | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 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 |
|---|---|---|
| 2018-10-15 | Q1840817001 | ND |
| 2018-10-15 | Q1840817004 | ND |
| 2019-05-13 | Q1923815001 | ND |
| 2019-05-13 | Q1923815003 | ND |
| 2020-08-03 | Q2030172001 | ND |
| 2020-08-03 | Q2030172003 | ND |
| 2021-06-03 | Q2114419005 | ND |
| 2021-06-03 | Q2114419011 | ND |
| 2022-11-30 | Q2235876001 | ND |
| 2022-11-30 | Q2235876003 | ND |
| 2023-08-17 | Q2334697001 | ND |
| 2023-08-17 | Q2334697003 | ND |