1,1,1,2-Tetrachloroethane
City of Shafter
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
15
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
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 |
|---|---|---|
| 2016-02-23 | 5867-003-0920 | ND |
| 2016-02-23 | 5867-007-1225 | ND |
| 2016-02-23 | 5867-008-1130 | ND |
| 2016-02-23 | 5867-017-1055 | ND |
| 2016-04-05 | 5867-021-1355 | ND |
| 2016-11-01 | 5867-004-1120 | ND |
| 2017-01-24 | 5867-021-1110 | ND |
| 2018-03-28 | 5867-021-1335 | ND |
| 2018-04-24 | 5867-021-1115 | ND |
| 2018-07-24 | 5867-021-1015 | ND |
| 2018-10-23 | 5867-021-1140 | ND |
| 2019-02-26 | 5867-007-1110 | ND |
| 2019-02-26 | 5867-017-1215 | ND |
| 2019-04-23 | 5867-021-1225 | ND |
| 2019-06-25 | 5867-023-1410 | ND |