1,2,3-Trichloropropane
San Francisco Regional Water System
1,2,3-Trichloropropane is a potent carcinogen that contaminates drinking water in agricultural regions where it was historically used as soil fumigant. Click here to read more about carcinogenic VOCs.
9
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 | 1 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 5 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.0007 ppb
The EWG Health Guideline of 0.0007 ppb for 1,2,3-trichloropropane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2016-06-21 | 9590-016-1055 | ND |
| 2017-06-19 | 9590-001-1025 | ND |
| 2017-06-19 | 9590-015-1100 | ND |
| 2017-06-19 | 9590-016-0953 | ND |
| 2019-06-24 | 9590-034-1035 | ND |
| 2019-06-24 | 9590-035-1137 | ND |
| 2019-06-26 | 9590-031-1430 | ND |
| 2019-06-26 | 9590-032-0925 | ND |
| 2019-06-26 | 9590-033-1125 | ND |