1,1,1,2-Tetrachloroethane
Mesa Grande Water Supply Corporation
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
12
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 | ND | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-12-03 | Q1458233004 | ND |
| 2014-12-03 | Q1458233006 | ND |
| 2015-10-22 | Q1541808003 | ND |
| 2015-10-22 | Q1541808001 | ND |
| 2016-11-14 | Q1649175001 | ND |
| 2016-11-14 | Q1649175003 | ND |
| 2017-12-14 | Q1766132002 | ND |
| 2017-12-14 | Q1766132003 | ND |
| 2018-10-01 | Q1838902010 | ND |
| 2018-10-01 | Q1838902008 | ND |
| 2019-09-23 | Q1967401003 | ND |
| 2019-09-23 | Q1967401005 | ND |