1,2,3-Trichloropropane
Smithwick Mills Community
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.
12
Samples
0
Samples exceeding legal limit (MCL)
4
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 2 | 0 | ND |
| 2019 | 0.370 ppb | 2 | 1 | ND - 0.740 ppb |
| 2020 | 0.715 ppb | 2 | 1 | ND - 1.43 ppb |
| 2021 | 0.155 ppb | 2 | 1 | ND - 0.310 ppb |
| 2022 | 0.405 ppb | 2 | 1 | ND - 0.810 ppb |
| 2023 | ND | 2 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-05-17 | AE26831 | ND |
| 2018-09-17 | AE40289 | ND |
| 2019-05-30 | AE68674 | 0.740 ppb |
| 2019-07-25 | AE75973 | ND |
| 2020-04-06 | AF05686 | 1.43 ppb |
| 2020-07-15 | AF19411 | ND |
| 2021-02-03 | AF42504 | 0.310 ppb |
| 2021-08-23 | AF67424 | ND |
| 2022-04-26 | AF94496 | 0.810 ppb |
| 2022-08-16 | AG09446 | ND |
| 2023-01-12 | AG24454 | ND |
| 2023-09-19 | AG56867 | ND |