1,1,1,2-Tetrachloroethane
West Brazos Water Supply Corporation
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
13
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 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 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 |
|---|---|---|
| 2015-03-18 | AC85075 | ND |
| 2015-12-08 | AD15977 | ND |
| 2016-03-03 | AD26913 | ND |
| 2016-03-03 | AD26911 | ND |
| 2017-02-15 | Q1706555001 | ND |
| 2017-06-22 | Q1726207006 | ND |
| 2017-11-28 | Q1760204011 | ND |
| 2018-09-19 | Q1837446002 | ND |
| 2018-09-19 | Q1837446004 | ND |
| 2018-09-19 | Q1837446005 | ND |
| 2019-10-23 | Q1973493001 | ND |
| 2019-10-23 | Q1973490003 | ND |
| 2019-10-23 | Q1973490001 | ND |