1,2,3-Trichloropropane
City of Napa
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)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | ND | 6 | 0 | ND |
| 2014 | ND | 3 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2013-01-09 | 1301175-001E | ND |
| 2013-04-03 | 1304110-001E | ND |
| 2013-07-10 | 1307419-001E | ND |
| 2013-07-10 | 1307416-001E | ND |
| 2013-10-03 | 1310111-001E | ND |
| 2013-10-03 | 1310113-001E | ND |
| 2014-07-09 | 1233-007-0925 | ND |
| 2014-07-09 | 1233-006-1245 | ND |
| 2014-07-09 | 1233-005-1145 | ND |
| 2015-07-21 | 1233-005-1120 | ND |
| 2015-07-21 | 1233-007-0940 | ND |
| 2015-07-21 | 1233-006-1415 | ND |
| 2016-07-27 | 1233-007-1245 | ND |
| 2016-07-27 | 1233-006-1545 | ND |
| 2017-07-20 | 1233-007-1050 | ND |
| 2017-07-20 | 1233-006-1330 | ND |
| 2017-09-13 | 1233-005-0840 | ND |
| 2018-07-11 | 1233-007-1200 | ND |
| 2018-07-11 | 1233-006-1015 | ND |