1,1,1,2-Tetrachloroethane
City of Newport News
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 | N/A | 0 | 0 | N/A |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2014-11-03 | HMFW_110314V | ND |
| 2014-12-01 | LHFW_120114V | ND |
| 2016-12-05 | HMFW_120516V | ND |
| 2016-12-06 | LHFW_120616V | ND |
| 2017-11-06 | HMFW_110617V | ND |
| 2017-11-06 | LHFW_110617V | ND |
| 2018-12-03 | HMFW_120318V | ND |
| 2018-12-03 | LHFW_120318V | ND |
| 2019-12-02 | HMFW-033028 | ND |
| 2019-12-02 | LHFW-033030 | ND |