1,1,1,2-Tetrachloroethane
Harford County Department of Public Works
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 7 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | N/A | 0 | 0 | N/A |
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 |
---|---|---|
2014-01-17 | 0120016_01_L4901 | ND |
2014-04-14 | 0120016_02_L5015 | ND |
2014-04-14 | 0120016_03_L5015 | ND |
2014-04-29 | 0120016_01_L5028 | ND |
2014-07-11 | 0120016_01_L5153 | ND |
2014-10-31 | 0120016_01_20376 | ND |
2014-12-11 | 0120016_01_20446 | ND |
2015-02-13 | 0120016_01_20547 | ND |