1,1,1,2-Tetrachloroethane
Fern Valley Water District
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
10
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 |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 10 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2017-05-16 | 4790-004-0935 | ND |
| 2017-05-16 | 4790-005-1006 | ND |
| 2017-05-16 | 4790-009-0920 | ND |
| 2017-05-16 | 4790-010-0925 | ND |
| 2017-05-16 | 4790-014-1153 | ND |
| 2017-05-16 | 4790-016-1040 | ND |
| 2017-05-16 | 4790-021-1027 | ND |
| 2017-05-16 | 4790-022-1038 | ND |
| 2017-06-01 | 4790-011-0925 | ND |
| 2017-06-01 | 4790-015-1020 | ND |