1,2,3-Trichloropropane
Llanas Camp Four 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.
19
Samples
0
Samples exceeding legal limit (MCL)
19
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.0948 ppb | 4 | 4 | 0.0460 ppb - 0.140 ppb |
| 2019 | 0.0195 ppb | 2 | 2 | 0.0120 ppb - 0.0270 ppb |
| 2020 | 0.0760 ppb | 3 | 3 | 0.0180 ppb - 0.150 ppb |
| 2021 | 0.101 ppb | 4 | 4 | 0.0880 ppb - 0.130 ppb |
| 2022 | 0.101 ppb | 3 | 3 | 0.0920 ppb - 0.110 ppb |
| 2023 | 0.0333 ppb | 3 | 3 | 0.0140 ppb - 0.0500 ppb |
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 |
|---|---|---|
| 2018-03-12 | CA1502164_001_001-201803121650 | 0.1000 ppb |
| 2018-04-04 | CA1502164_001_001-201804041825 | 0.0460 ppb |
| 2018-08-21 | CA1502164_001_001-201808211205 | 0.0930 ppb |
| 2018-10-15 | CA1502164_001_001-201810151340 | 0.140 ppb |
| 2019-01-09 | CA1502164_001_001-201901091120 | 0.0270 ppb |
| 2019-12-12 | CA1502164_001_001-201912121600 | 0.0120 ppb |
| 2020-01-17 | CA1502164_001_001-202001171030 | 0.0180 ppb |
| 2020-07-14 | CA1502164_001_001-202007141515 | 0.150 ppb |
| 2020-12-17 | CA1502164_001_001-202012171640 | 0.0600 ppb |
| 2021-02-25 | CA1502164_001_001-202102251540 | 0.130 ppb |
| 2021-05-21 | CA1502164_001_001-202105211046 | 0.0890 ppb |
| 2021-09-21 | CA1502164_001_001-202109211600 | 0.0950 ppb |
| 2021-10-28 | CA1502164_001_001-202110281600 | 0.0880 ppb |
| 2022-02-16 | CA1502164_001_001-202202161555 | 0.1000 ppb |
| 2022-04-17 | CA1502164_001_001-202204171541 | 0.0920 ppb |
| 2022-09-27 | CA1502164_001_001-202209271540 | 0.110 ppb |
| 2023-02-10 | CA1502164_001_001-202302101100 | 0.0500 ppb |
| 2023-04-13 | CA1502164_001_001-202304131535 | 0.0360 ppb |
| 2023-12-15 | CA1502164_001_001-202312151120 | 0.0140 ppb |