1,1,2,2-Tetrachloroethane
City of Friendswood
1,1,2,2-Tetrachloroethane is an industrial chemical which has been used as a metal degreaser, and in paint, paint removers, mothballs and pesticides. It damages the liver and nervous system, and may cause cancer.
26
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 | ND | 2 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 6 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.1 ppb
The EWG Health Guideline of 0.1 ppb for 1,1,2,2-tetrachloroethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-20 | AC43875 | ND |
| 2014-02-20 | AC43867 | ND |
| 2015-02-05 | AC79512 | ND |
| 2015-02-05 | AC79510 | ND |
| 2015-02-05 | AC79506 | ND |
| 2015-02-05 | AC79514 | ND |
| 2016-02-04 | AD22119 | ND |
| 2016-02-04 | AD22173 | ND |
| 2016-02-04 | AD22161 | ND |
| 2016-02-04 | AD22177 | ND |
| 2016-09-28 | AD51724 | ND |
| 2016-10-26 | AD54839 | ND |
| 2017-01-19 | AD65743 | ND |
| 2017-01-19 | AD65723 | ND |
| 2017-01-19 | AD65721 | ND |
| 2017-05-03 | AD82490 | ND |
| 2018-01-29 | AE11006 | ND |
| 2018-05-21 | AE27042 | ND |
| 2018-05-21 | AE27044 | ND |
| 2018-09-17 | AE40251 | ND |
| 2019-02-04 | AE52712 | ND |
| 2019-02-04 | AE52710 | ND |
| 2019-02-04 | AE52716 | ND |
| 2019-02-04 | AE52718 | ND |
| 2019-04-22 | AE63211 | ND |
| 2019-07-15 | AE74435 | ND |