1,1,1,2-Tetrachloroethane
South Montebello Irrigation District
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
16
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2016-05-25 | 9588-005-0925 | ND |
| 2016-08-25 | 9588-003-1000 | ND |
| 2016-08-25 | 9588-009-1020 | ND |
| 2016-11-22 | 9588-007-1030 | ND |
| 2017-05-25 | 9588-005-1030 | ND |
| 2017-08-30 | 9588-003-1050 | ND |
| 2017-08-30 | 9588-007-1035 | ND |
| 2017-08-30 | 9588-009-1155 | ND |
| 2018-05-29 | 9588-005-1040 | ND |
| 2018-08-15 | 9588-003-1100 | ND |
| 2018-08-15 | 9588-007-1115 | ND |
| 2018-08-15 | 9588-009-1025 | ND |
| 2019-05-02 | 9588-005-0915 | ND |
| 2019-08-05 | 9588-003-1025 | ND |
| 2019-08-05 | 9588-007-1050 | ND |
| 2019-08-15 | 9588-009-1140 | ND |