1,1,1,2-Tetrachloroethane
Lake Conroe Forest Subdivision
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
11
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 | ND | 1 | 0 | ND |
2015 | ND | 2 | 0 | ND |
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 |
---|---|---|
2014-08-07 | AC62534 | ND |
2015-08-04 | AD02341 | ND |
2015-08-04 | AD02339 | ND |
2016-12-12 | AD61684 | ND |
2016-12-12 | AD61690 | ND |
2017-07-27 | AD91126 | ND |
2017-07-27 | AD91122 | ND |
2018-05-23 | AE27500 | ND |
2018-05-23 | AE27498 | ND |
2019-07-18 | AE75047 | ND |
2019-07-18 | AE75055 | ND |