1,1,1,2-Tetrachloroethane
Denair Community Services District
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 | ND | 2 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2018-09-07 | CA5010021_009_009-201809070850 | ND |
| 2018-09-07 | CA5010021_010_010-201809070915 | ND |
| 2020-10-08 | CA5010021_008_008-202010080951 | ND |
| 2020-10-08 | CA5010021_007_007-202010081024 | ND |
| 2021-09-16 | CA5010021_010_010-202109161000 | ND |
| 2021-09-16 | CA5010021_009_009-202109160925 | ND |
| 2023-10-10 | CA5010021_007_007-202310101000 | ND |
| 2023-10-10 | CA5010021_008_008-202310101014 | ND |