1,1,1,2-Tetrachloroethane
Metropolitan District Commission
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
18
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 | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 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 |
|---|---|---|
| 2014-07-18 | AC71438GE | ND |
| 2014-07-18 | AC71437GE | ND |
| 2014-07-21 | AC71441GE | ND |
| 2015-06-08 | AC99641GE | ND |
| 2015-06-08 | AC99645GE | ND |
| 2015-06-08 | AC99642GE | ND |
| 2016-06-15 | AD32724GE | ND |
| 2016-06-15 | AD32723GE | ND |
| 2016-06-16 | AD32722GE | ND |
| 2017-06-26 | AD66733GE | ND |
| 2017-06-26 | AD66734GE | ND |
| 2017-06-27 | AD66735GE | ND |
| 2018-07-16 | AE00911GE | ND |
| 2018-07-16 | AE00927GE | ND |
| 2018-07-16 | AE00912GE | ND |
| 2019-06-05 | AE29314GE | ND |
| 2019-06-05 | AE29313GE | ND |
| 2019-06-05 | AE29315GE | ND |