1,2,3-Trichloropropane
Wattsville Water Authority
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.
15
Samples
0
Samples exceeding legal limit (MCL)
2
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | 0.500 ppb | 2 | 2 | 0.500 ppb |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-01-08 | 1801-00078-3 | ND |
| 2018-01-08 | 1801-00078-5 | ND |
| 2019-01-14 | 1901-00204-003 | ND |
| 2019-01-14 | 1901-00204-004 | ND |
| 2020-03-09 | 2003-00158-003 | ND |
| 2020-03-09 | 2003-00158-004 | ND |
| 2020-03-09 | 2003-00158-007 | ND |
| 2021-01-06 | 2101-00069-003 | 0.500 ppb |
| 2021-01-06 | 2101-00069-005 | 0.500 ppb |
| 2022-03-15 | 2203-00287-002 | ND |
| 2022-03-15 | 2203-00287-003 | ND |
| 2022-03-15 | 2203-00287-004 | ND |
| 2023-02-15 | 2302-00340-004 | ND |
| 2023-02-15 | 2302-00340-005 | ND |
| 2023-02-15 | 2302-00340-006 | ND |