1,1,1,2-Tetrachloroethane
Downey Water Department
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
42
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 | N/A | 0 | 0 | N/A |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 23 | 0 | ND |
| 2019 | ND | 18 | 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 |
|---|---|---|
| 2017-12-12 | 9588-033-1042 | ND |
| 2018-02-13 | 9588-032-1020 | ND |
| 2018-02-13 | 9588-005-1105 | ND |
| 2018-02-13 | 9588-016-1132 | ND |
| 2018-02-13 | 9588-033-1220 | ND |
| 2018-02-13 | 9588-014-1255 | ND |
| 2018-02-13 | 9588-011-1200 | ND |
| 2018-02-13 | 9588-010-0945 | ND |
| 2018-02-13 | 9588-009-0930 | ND |
| 2018-02-13 | 9588-007-0900 | ND |
| 2018-02-14 | 9588-026-1059 | ND |
| 2018-02-14 | 9588-024-1226 | ND |
| 2018-02-14 | 9588-020-1206 | ND |
| 2018-02-14 | 9588-017-1136 | ND |
| 2018-02-14 | 9588-030-1020 | ND |
| 2018-02-14 | 9588-029-1039 | ND |
| 2018-02-21 | 9588-018-0925 | ND |
| 2018-02-21 | 9588-021-1047 | ND |
| 2018-02-21 | 9588-019-1000 | ND |
| 2018-03-14 | 9588-012-1131 | ND |
| 2018-03-26 | 9588-025-1035 | ND |
| 2018-05-01 | 9588-019-1159 | ND |
| 2018-10-23 | 9588-018-1314 | ND |
| 2018-11-06 | 9588-012-1045 | ND |
| 2019-01-15 | 9588-032-0755 | ND |
| 2019-01-24 | 9588-029-0905 | ND |
| 2019-01-24 | 9588-025-0730 | ND |
| 2019-01-24 | 9588-030-0822 | ND |
| 2019-01-25 | 9588-021-0840 | ND |
| 2019-01-25 | 9588-020-0938 | ND |
| 2019-01-25 | 9588-026-0806 | ND |
| 2019-01-25 | 9588-010-1008 | ND |
| 2019-01-25 | 9588-009-1026 | ND |
| 2019-01-25 | 9588-005-1048 | ND |
| 2019-01-30 | 9588-033-0735 | ND |
| 2019-01-30 | 9588-019-0820 | ND |
| 2019-01-30 | 9588-011-1030 | ND |
| 2019-01-31 | 9588-024-0820 | ND |
| 2019-01-31 | 9588-017-1015 | ND |
| 2019-01-31 | 9588-016-0930 | ND |
| 2019-01-31 | 9588-014-1000 | ND |
| 2019-09-30 | 9588-033-0830 | ND |