1,1,1,2-Tetrachloroethane
Madison Water Works
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
15
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 | 5 | 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 |
|---|---|---|
| 2014-10-14 | L727671-1 | ND |
| 2014-10-23 | L729555-1 | ND |
| 2015-12-09 | L806002-001 | ND |
| 2015-12-09 | L806002-002 | ND |
| 2016-11-09 | L871807-2 | ND |
| 2016-11-09 | L871807-1 | ND |
| 2017-10-11 | L943310-1 | ND |
| 2017-10-11 | L943310-2 | ND |
| 2018-01-08 | L961798-1 | ND |
| 2018-01-22 | L964821-1 | ND |
| 2018-04-09 | L984270-1 | ND |
| 2018-08-08 | L1016297-01 | ND |
| 2018-11-01 | L1040607-01 | ND |
| 2019-02-20 | L1072415-01 | ND |
| 2019-02-20 | L1072415-01A | ND |