1,1,1,2-Tetrachloroethane
Exeter Water Department
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
10
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 | 2 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-07-09 | 133509.01 | ND |
| 2014-10-09 | 136708.02 | ND |
| 2015-07-16 | 145750.01 | ND |
| 2015-09-09 | 147823.01 | ND |
| 2015-11-18 | 150486.01 | ND |
| 2016-01-13 | 152193.01 | ND |
| 2016-04-07 | 154592.01 | ND |
| 2016-07-13 | 158246.01 | ND |
| 2016-07-21 | 158588.01 | ND |
| 2016-10-04 | 161298.01 | ND |