1,1,1,2-Tetrachloroethane
Lakeway Harbor Subdivision
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
9
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 | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-02-14 | Q1806270007 | ND |
| 2019-03-20 | Q1911659002 | ND |
| 2020-03-18 | Q2012015001 | ND |
| 2021-03-10 | Q2106424002 | ND |
| 2021-05-26 | Q2113682004 | ND |
| 2021-08-16 | Q2121818004 | ND |
| 2021-10-12 | Q2128285004 | ND |
| 2022-01-10 | Q2200510007 | ND |
| 2023-01-12 | Q2301979002 | ND |