1,1,1,2-Tetrachloroethane
City of Midlothian
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 3 | 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 |
|---|---|---|
| 2014-03-11 | Q1407651002 | ND |
| 2014-06-04 | Q1419409005 | ND |
| 2014-07-30 | Q1432468007 | ND |
| 2015-03-19 | Q1510436010 | ND |
| 2015-07-22 | Q1528429002 | ND |
| 2016-05-18 | Q1619797001 | ND |
| 2016-09-02 | Q1635531002 | ND |
| 2017-07-11 | Q1728156006 | ND |
| 2017-09-28 | Q1747556002 | ND |
| 2018-01-25 | Q1802981014 | ND |
| 2018-08-31 | Q1835160001 | ND |
| 2019-02-12 | Q1906277003 | ND |
| 2019-07-25 | Q1947718001 | ND |