1,2,3-Trichloropropane
City of Chino Hills
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.
16
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 | 0.01000 ppb | 8 | 2 | ND - 0.0480 ppb |
| 2014 | ND | 2 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 1 | 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 |
|---|---|---|
| 2013-06-18 | B3F1931-05 | 0.0480 ppb |
| 2013-06-18 | B3F1931-01 | ND |
| 2013-06-18 | B3F1931-03 | ND |
| 2013-09-24 | B3I2250-07 | ND |
| 2013-09-24 | B3I2250-05 | ND |
| 2013-12-16 | B3L1445-05 | ND |
| 2013-12-16 | B3L1445-01 | 0.0320 ppb |
| 2013-12-16 | B3L1445-03 | ND |
| 2014-03-13 | B4C1347-01 | ND |
| 2014-03-13 | B4C1347-03 | ND |
| 2017-09-13 | 9588-024-1200 | ND |
| 2017-09-14 | 9588-014-1410 | ND |
| 2018-04-25 | 4790-024-1130 | ND |
| 2018-06-28 | 4790-024-1140 | ND |
| 2018-12-17 | 4790-014-1140 | ND |
| 2019-11-20 | 4790-014-0845 | ND |