1,1,1,2-Tetrachloroethane
Demi John Place Water System
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
22
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 5 | 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 |
|---|---|---|
| 2015-02-19 | AC81227 | ND |
| 2015-02-19 | AC81225 | ND |
| 2016-03-24 | AD30444 | ND |
| 2016-03-24 | AD30460 | ND |
| 2016-06-09 | AD40052 | ND |
| 2016-09-28 | AD51726 | ND |
| 2016-11-02 | AD56174 | ND |
| 2017-03-09 | AD74412 | ND |
| 2017-03-09 | AD74420 | ND |
| 2017-05-10 | AD83740 | ND |
| 2017-08-15 | AD93102 | ND |
| 2017-11-08 | AE04069 | ND |
| 2018-01-24 | AE10176 | ND |
| 2018-03-26 | AE19974 | ND |
| 2018-05-30 | AE28049 | ND |
| 2018-08-14 | AE36963 | ND |
| 2018-12-10 | AE48402 | ND |
| 2019-02-25 | AE55687 | ND |
| 2019-02-25 | AE55641 | ND |
| 2019-06-06 | AE69477 | ND |
| 2019-09-12 | AE83230 | ND |
| 2019-11-15 | AE89563 | ND |