1,1,1,2-Tetrachloroethane
City of Ripon
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
12
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 | 4 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 1 | 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 |
|---|---|---|
| 2015-06-08 | 2625-003-1138 | ND |
| 2015-06-08 | 2625-007-0955 | ND |
| 2015-06-08 | 2625-022-1030 | ND |
| 2015-07-08 | 2625-024-0955 | ND |
| 2016-06-15 | 2625-003-0800 | ND |
| 2016-06-15 | 2625-010-0820 | ND |
| 2016-10-20 | 2625-020-1045 | ND |
| 2017-06-14 | 2625-010-0930 | ND |
| 2017-10-24 | 2625-020-1020 | ND |
| 2018-06-12 | 2625-007-0945 | ND |
| 2018-07-10 | 5810-024-0910 | ND |
| 2019-06-11 | 5810-003-0806 | ND |