1,1,1,2-Tetrachloroethane
Northwest Park MUD
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
17
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 4 | 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 |
|---|---|---|
| 2015-09-15 | AD07117 | ND |
| 2015-09-15 | AD07121 | ND |
| 2015-09-15 | AD07133 | ND |
| 2016-08-03 | AD46879 | ND |
| 2016-08-03 | AD46881 | ND |
| 2016-08-03 | AD46883 | ND |
| 2016-11-15 | AD58081 | ND |
| 2017-04-28 | AD81834 | ND |
| 2017-04-28 | AD81840 | ND |
| 2017-04-28 | AD81862 | ND |
| 2017-04-28 | AD81854 | ND |
| 2018-06-07 | AE29031 | ND |
| 2018-06-07 | AE29025 | ND |
| 2018-06-07 | AE29027 | ND |
| 2019-07-25 | AE76005 | ND |
| 2019-07-25 | AE76007 | ND |
| 2019-12-19 | AE92875 | ND |