1,2,3-Trichloropropane
Twin Buttes Water System
NOTE: Twin Buttes Water System purchases water from City of San Angelo which is required to test for 1,2,3-trichloropropane. Sample information shown below was taken by City of San Angelo.
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 19 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 2 | 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
NOTE: Twin Buttes Water System purchases water from City of San Angelo which is required to test for 1,2,3-trichloropropane. Sample information shown below was taken by City of San Angelo.
| Date | Lab ID | Result |
|---|---|---|
| 2013-08-26 | 201308270155AM | ND |
| 2013-11-25 | 201311260124AM | ND |
| 2014-02-20 | 201402210248AM | ND |
| 2014-04-29 | AC52037 | ND |
| 2014-04-29 | AC52091 | ND |
| 2014-04-29 | AC52097 | ND |
| 2014-04-29 | AC52101 | ND |
| 2014-04-29 | AC52075 | ND |
| 2014-04-29 | AC52077 | ND |
| 2014-04-29 | AC52103 | ND |
| 2014-04-29 | AC52099 | ND |
| 2014-04-29 | AC52069 | ND |
| 2014-04-29 | AC52067 | ND |
| 2014-04-29 | AC52065 | ND |
| 2014-04-29 | AC52063 | ND |
| 2014-04-29 | AC52059 | ND |
| 2014-04-29 | AC52039 | ND |
| 2014-04-29 | AC52071 | ND |
| 2014-05-20 | 201405210834AM | ND |
| 2014-05-22 | AC55060 | ND |
| 2014-08-11 | AC63095 | ND |
| 2015-08-12 | AD03968 | ND |
| 2016-02-17 | AD24323 | ND |
| 2016-02-17 | AD24443 | ND |
| 2016-05-17 | AD37069 | ND |
| 2016-07-20 | AD45007 | ND |
| 2016-11-09 | AD57412 | ND |
| 2017-05-09 | Q1719085002 | ND |
| 2018-02-28 | Q1808687007 | ND |
| 2019-05-07 | Q1920785002 | ND |
| 2019-05-07 | Q1920785001 | ND |