1,1,1,2-Tetrachloroethane
City of Modesto
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
39
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 | 24 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 15 | 0 | ND |
| 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 |
|---|---|---|
| 2014-01-08 | 1610-146-0910 | ND |
| 2014-01-08 | 1610-051-1142 | ND |
| 2014-02-12 | 1610-166-0900 | ND |
| 2014-02-26 | 1610-166-0805 | ND |
| 2014-03-05 | 1610-018-1025 | ND |
| 2014-03-12 | 1610-166-1125 | ND |
| 2014-03-26 | 1610-166-0800 | ND |
| 2014-04-09 | 1610-008-1325 | ND |
| 2014-04-09 | 1610-003-1135 | ND |
| 2014-04-09 | 1610-009-1240 | ND |
| 2014-06-04 | 1610-078-0930 | ND |
| 2014-07-02 | 1610-151-1110 | ND |
| 2014-07-02 | 1610-078-0945 | ND |
| 2014-07-09 | 1610-008-1305 | ND |
| 2014-07-09 | 1610-003-1400 | ND |
| 2014-07-09 | 1610-009-1330 | ND |
| 2014-07-09 | 1610-166-1138 | ND |
| 2014-08-06 | 1610-078-0945 | ND |
| 2014-08-13 | 1610-166-0835 | ND |
| 2014-09-03 | 1610-035-0820 | ND |
| 2014-09-03 | 1610-154-1249 | ND |
| 2014-09-03 | 1610-149-1012 | ND |
| 2014-09-03 | 1610-147-1051 | ND |
| 2014-09-03 | 1610-124-1230 | ND |
| 2017-03-03 | 1644-245-1300 | ND |
| 2017-09-06 | 5867-035-0835 | ND |
| 2017-09-06 | 5867-044-0925 | ND |
| 2017-09-06 | 5867-124-0810 | ND |
| 2017-09-06 | 5867-147-1105 | ND |
| 2017-09-06 | 5867-149-0830 | ND |
| 2017-09-20 | 5867-097-1100 | ND |
| 2017-09-20 | 5867-127-1045 | ND |
| 2017-09-20 | 5867-068-0820 | ND |
| 2017-09-20 | 5867-062-0845 | ND |
| 2017-09-20 | 5867-048-0900 | ND |
| 2017-09-20 | 5867-047-0930 | ND |
| 2017-09-20 | 5867-170-0928 | ND |
| 2017-09-20 | 5867-043-1030 | ND |
| 2017-09-20 | 5867-191-0958 | ND |