1,2,3-Trichloropropane
City of San Marcos
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.
74
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 | ND | 22 | 0 | ND |
| 2015 | ND | 15 | 0 | ND |
| 2016 | ND | 9 | 0 | ND |
| 2017 | ND | 12 | 0 | ND |
| 2018 | ND | 7 | 0 | ND |
| 2019 | ND | 9 | 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 |
|---|---|---|
| 2014-03-12 | AC63077 | ND |
| 2014-03-12 | AC46803 | ND |
| 2014-08-12 | AC63123 | ND |
| 2014-08-12 | AC63071 | ND |
| 2014-08-12 | AC63143 | ND |
| 2014-08-12 | AC63125 | ND |
| 2014-08-12 | AC63117 | ND |
| 2014-08-12 | AC63073 | ND |
| 2014-08-12 | AC63087 | ND |
| 2014-08-12 | AC63075 | ND |
| 2014-09-10 | A4H1453-04A | ND |
| 2014-09-10 | A4H1453-01A | ND |
| 2014-09-10 | A4H1453-19A | ND |
| 2014-09-10 | A4H1453-10A | ND |
| 2014-09-10 | A4H1453-13A | ND |
| 2014-09-10 | A4H1453-16A | ND |
| 2014-09-10 | A4H1453-07A | ND |
| 2014-12-03 | A4K1048-05A | ND |
| 2014-12-03 | A4K1048-17A | ND |
| 2014-12-03 | A4K1048-11A | ND |
| 2014-12-03 | A4K1048-14A | ND |
| 2014-12-03 | A4K1048-08A | ND |
| 2015-03-11 | A5B1481-10A | ND |
| 2015-03-11 | A5B1481-07A | ND |
| 2015-03-11 | A5B1474-04A | ND |
| 2015-03-11 | A5B1481-13A | ND |
| 2015-03-11 | A5B1474-01A | ND |
| 2015-03-11 | A5B1481-04A | ND |
| 2015-03-11 | A5B1481-01A | ND |
| 2015-06-10 | AC95480 | ND |
| 2015-06-10 | AC95468 | ND |
| 2015-06-10 | AC95474 | ND |
| 2015-06-10 | AC95470 | ND |
| 2015-06-10 | AC95472 | ND |
| 2015-06-25 | A5F1429-04A | ND |
| 2015-09-23 | AD08303 | ND |
| 2015-09-23 | AD08299 | ND |
| 2016-03-16 | AD29157 | ND |
| 2016-03-16 | AD29111 | ND |
| 2016-09-16 | AD49839 | ND |
| 2016-11-28 | AD59222 | ND |
| 2016-11-28 | AD59220 | ND |
| 2016-11-28 | AD59234 | ND |
| 2016-11-28 | AD59232 | ND |
| 2016-12-12 | AD61688 | ND |
| 2016-12-12 | AD61664 | ND |
| 2017-02-22 | AD71542 | ND |
| 2017-02-22 | AD71534 | ND |
| 2017-05-03 | AD82468 | ND |
| 2017-05-03 | AD82466 | ND |
| 2017-05-03 | AD82462 | ND |
| 2017-05-03 | AD82464 | ND |
| 2017-05-03 | AD82506 | ND |
| 2017-05-03 | AD82502 | ND |
| 2017-05-03 | AD82504 | ND |
| 2017-07-12 | AD89095 | ND |
| 2017-10-12 | AE00610 | ND |
| 2017-10-12 | AE00574 | ND |
| 2018-01-25 | AE10564 | ND |
| 2018-01-25 | AE10638 | ND |
| 2018-01-25 | AE10572 | ND |
| 2018-01-25 | AE10574 | ND |
| 2018-01-25 | AE10666 | ND |
| 2018-04-11 | AE22067 | ND |
| 2018-07-26 | AE34698 | ND |
| 2019-01-16 | AE50214 | ND |
| 2019-01-16 | AE50162 | ND |
| 2019-01-16 | AE50166 | ND |
| 2019-01-16 | AE50168 | ND |
| 2019-01-16 | AE50164 | ND |
| 2019-04-16 | AE62614 | ND |
| 2019-04-16 | AE62552 | ND |
| 2019-07-09 | AE73687 | ND |
| 2019-07-09 | AE73745 | ND |