1,1,1,2-Tetrachloroethane
City of Seal Beach
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
19
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 | 4 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 5 | 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 |
|---|---|---|
| 2014-01-30 | 4417-009-0955 | ND |
| 2014-01-30 | 4417-002-0900 | ND |
| 2014-01-30 | 4417-001-0930 | ND |
| 2014-02-25 | 4417-003-0740 | ND |
| 2015-01-20 | 4417-002-0830 | ND |
| 2015-01-20 | 4417-009-0805 | ND |
| 2016-01-27 | 4417-009-0910 | ND |
| 2016-01-27 | 4417-002-0930 | ND |
| 2017-01-12 | 4417-009-0835 | ND |
| 2017-01-12 | 4417-002-0815 | ND |
| 2018-01-16 | 4417-002-1030 | ND |
| 2018-01-16 | 4417-009-1100 | ND |
| 2018-02-27 | 4417-001-0930 | ND |
| 2018-05-16 | 4417-001-1100 | ND |
| 2019-01-24 | 4417-002-0905 | ND |
| 2019-01-24 | 4417-001-1005 | ND |
| 2019-03-14 | 4417-009-1335 | ND |
| 2019-04-30 | 4417-009-1000 | ND |
| 2019-04-30 | 4417-009-1010 | ND |