1,1,1,2-Tetrachloroethane
Eau Claire Waterworks
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 | 1 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 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 |
|---|---|---|
| 2014-07-21 | 804376 | ND |
| 2015-07-16 | 871767 | ND |
| 2016-07-26 | 935390 | ND |
| 2016-09-01 | 942711 | ND |
| 2016-11-03 | 957173 | ND |
| 2017-02-21 | 974479 | ND |
| 2017-05-09 | 987395 | ND |
| 2017-07-11 | 1002950 | ND |
| 2017-10-24 | 1026050 | ND |
| 2018-03-14 | 1045099 | ND |
| 2018-05-08 | 1054395 | ND |
| 2018-08-29 | 1077023 | ND |
| 2018-12-12 | 1097339 | ND |
| 2019-02-13 | 1104865 | ND |
| 2019-04-22 | 1116666 | ND |
| 2019-07-16 | 1134673 | ND |