1,1,1,2-Tetrachloroethane
City of Hewitt
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
16
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 | 1 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2014-01-14 | AC38665 | ND |
| 2015-03-23 | AC85655 | ND |
| 2015-03-23 | AC85645 | ND |
| 2015-03-23 | AC85649 | ND |
| 2016-01-20 | AD19002 | ND |
| 2016-01-20 | AD19012 | ND |
| 2016-04-06 | AD32129 | ND |
| 2017-04-03 | AD78087 | ND |
| 2017-10-09 | AD99814 | ND |
| 2017-10-31 | AE03236 | ND |
| 2018-02-07 | AE12765 | ND |
| 2018-04-19 | AE23265 | ND |
| 2018-04-19 | AE23263 | ND |
| 2019-02-12 | AE54094 | ND |
| 2019-02-12 | AE54098 | ND |
| 2019-02-12 | AE54084 | ND |