1,2,3-Trichloropropane
Cobles Corner
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.
24
Samples
0
Samples exceeding legal limit (MCL)
24
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.0284 ppb | 5 | 5 | 0.0180 ppb - 0.0440 ppb |
| 2019 | 0.0205 ppb | 4 | 4 | 0.0170 ppb - 0.0270 ppb |
| 2020 | 0.0408 ppb | 4 | 4 | 0.0190 ppb - 0.0500 ppb |
| 2021 | 0.0378 ppb | 4 | 4 | 0.0230 ppb - 0.0610 ppb |
| 2022 | 0.0510 ppb | 4 | 4 | 0.0330 ppb - 0.1000 ppb |
| 2023 | 0.0703 ppb | 3 | 3 | 0.0620 ppb - 0.0800 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 |
|---|---|---|
| 2018-03-15 | CA5000033_002_002-201803150905 | 0.0280 ppb |
| 2018-03-27 | CA5000033_002_002-201803270905 | 0.0180 ppb |
| 2018-06-14 | CA5000033_002_002-201806141500 | 0.0330 ppb |
| 2018-09-20 | CA5000033_002_002-201809201540 | 0.0440 ppb |
| 2018-12-03 | CA5000033_002_002-201812031510 | 0.0190 ppb |
| 2019-03-04 | CA5000033_002_002-201903041510 | 0.0170 ppb |
| 2019-06-03 | CA5000033_002_002-201906031425 | 0.0190 ppb |
| 2019-09-09 | CA5000033_002_002-201909091435 | 0.0270 ppb |
| 2019-12-02 | CA5000033_002_002-201912021500 | 0.0190 ppb |
| 2020-02-13 | CA5000033_002_002-202002131530 | 0.0190 ppb |
| 2020-05-04 | CA5000033_002_002-202005041330 | 0.0490 ppb |
| 2020-08-03 | CA5000033_002_002-202008031530 | 0.0450 ppb |
| 2020-11-02 | CA5000033_002_002-202011021425 | 0.0500 ppb |
| 2021-02-11 | CA5000033_002_002-202102111455 | 0.0250 ppb |
| 2021-05-13 | CA5000033_002_002-202105131515 | 0.0610 ppb |
| 2021-08-02 | CA5000033_002_002-202108021525 | 0.0420 ppb |
| 2021-11-22 | CA5000033_002_002-202111221006 | 0.0230 ppb |
| 2022-02-23 | CA5000033_002_002-202202231420 | 0.0330 ppb |
| 2022-05-19 | CA5000033_002_002-202205191355 | 0.0380 ppb |
| 2022-08-22 | CA5000033_002_002-202208221315 | 0.1000 ppb |
| 2022-11-21 | CA5000033_002_002-202211211425 | 0.0330 ppb |
| 2023-05-16 | CA5000033_002_002-202305161410 | 0.0800 ppb |
| 2023-07-27 | CA5000033_002_002-202307271454 | 0.0690 ppb |
| 2023-10-09 | CA5000033_002_002-202310091302 | 0.0620 ppb |