1,1,1,2-Tetrachloroethane
Littleton Water Department
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
41
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 | 5 | 0 | ND |
| 2015 | ND | 8 | 0 | ND |
| 2016 | ND | 7 | 0 | ND |
| 2017 | ND | 7 | 0 | ND |
| 2018 | ND | 7 | 0 | ND |
| 2019 | ND | 7 | 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 | Result |
|---|---|
| 2014-06-04 | ND |
| 2014-06-04 | ND |
| 2014-06-16 | ND |
| 2014-09-29 | ND |
| 2014-11-17 | ND |
| 2015-02-04 | ND |
| 2015-04-16 | ND |
| 2015-04-22 | ND |
| 2015-04-22 | ND |
| 2015-04-22 | ND |
| 2015-04-22 | ND |
| 2015-04-28 | ND |
| 2015-05-26 | ND |
| 2016-06-09 | ND |
| 2016-06-21 | ND |
| 2016-06-21 | ND |
| 2016-06-21 | ND |
| 2016-06-21 | ND |
| 2016-06-21 | ND |
| 2016-06-21 | ND |
| 2017-05-24 | ND |
| 2017-05-24 | ND |
| 2017-06-19 | ND |
| 2017-06-19 | ND |
| 2017-06-19 | ND |
| 2017-06-19 | ND |
| 2017-06-19 | ND |
| 2018-04-11 | ND |
| 2018-05-01 | ND |
| 2018-05-01 | ND |
| 2018-05-01 | ND |
| 2018-05-07 | ND |
| 2018-05-07 | ND |
| 2018-06-19 | ND |
| 2019-05-01 | ND |
| 2019-05-01 | ND |
| 2019-05-01 | ND |
| 2019-05-01 | ND |
| 2019-05-30 | ND |
| 2019-06-05 | ND |
| 2019-06-17 | ND |