2,4,5-TP (Silvex)
El Paso Water Utilities
2(2,4,5-trichlorophenoxy) propionic acid (2,4,5-TP or Silvex) is a cancer-causing herbicide banned in the U.S. in 1985 because of its toxicity. It is still detected as a groundwater contaminant in areas where it was sprayed or stored.
62
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 | N/A | 0 | 0 | N/A |
| 2014 | ND | 23 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 27 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 3 ppb
The EWG Health Guideline of 3 ppb for 2,4,5-TP 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 harm to internal organs.
EPA Maximum Contaminant
Level (MCL) 50 ppb
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-04-24 | Q1413114017 | ND |
| 2014-04-24 | Q1413114016 | ND |
| 2014-04-24 | Q1413114015 | ND |
| 2014-04-24 | Q1413114014 | ND |
| 2014-04-28 | Q1413580021 | ND |
| 2014-04-28 | Q1413580020 | ND |
| 2014-04-28 | Q1413580019 | ND |
| 2014-04-28 | Q1413580018 | ND |
| 2014-04-28 | Q1413580017 | ND |
| 2014-08-19 | Q1437559003 | ND |
| 2014-09-11 | Q1443615004 | ND |
| 2014-10-20 | Q1453050022 | ND |
| 2014-10-20 | Q1453050023 | ND |
| 2014-10-20 | Q1453050025 | ND |
| 2014-10-20 | Q1453050024 | ND |
| 2014-10-22 | Q1453551009 | ND |
| 2014-10-22 | Q1453551008 | ND |
| 2014-10-23 | Q1453880003 | ND |
| 2014-11-13 | Q1455930010 | ND |
| 2014-11-13 | Q1455930009 | ND |
| 2014-11-13 | Q1455930003 | ND |
| 2014-12-08 | Q1458951006 | ND |
| 2014-12-09 | Q1459148004 | ND |
| 2015-03-31 | Q1511708018 | ND |
| 2015-06-29 | Q1524410017 | ND |
| 2015-11-09 | Q1544169009 | ND |
| 2016-05-04 | Q1617572015 | ND |
| 2016-05-04 | Q1617572014 | ND |
| 2017-03-01 | Q1708907037 | ND |
| 2017-03-01 | Q1708907021 | ND |
| 2017-03-01 | Q1708907020 | ND |
| 2017-03-01 | Q1708907036 | ND |
| 2017-03-07 | Q1709845023 | ND |
| 2017-03-07 | Q1709845022 | ND |
| 2017-03-07 | Q1709845021 | ND |
| 2017-03-07 | Q1709845020 | ND |
| 2017-03-28 | Q1712908005 | ND |
| 2017-05-02 | Q1718064007 | ND |
| 2017-05-04 | Q1718587019 | ND |
| 2017-08-28 | Q1738511010 | ND |
| 2017-11-16 | Q1758977022 | ND |
| 2017-11-16 | Q1758977024 | ND |
| 2017-11-16 | Q1758977025 | ND |
| 2017-11-16 | Q1758977027 | ND |
| 2017-11-16 | Q1758977028 | ND |
| 2017-11-16 | Q1758977026 | ND |
| 2017-11-28 | Q1760286010 | ND |
| 2017-11-28 | Q1760286002 | ND |
| 2017-11-29 | Q1761133028 | ND |
| 2017-11-29 | Q1761133012 | ND |
| 2017-11-29 | Q1761133013 | ND |
| 2017-11-29 | Q1761133027 | ND |
| 2017-11-30 | Q1761453005 | ND |
| 2017-11-30 | Q1761453028 | ND |
| 2017-11-30 | Q1761453016 | ND |
| 2018-02-06 | Q1805077005 | ND |
| 2018-07-10 | Q1826925001 | ND |
| 2019-02-27 | Q1908637025 | ND |
| 2019-04-25 | Q1916828007 | ND |
| 2019-06-26 | Q1940399006 | ND |
| 2019-06-26 | Q1940399016 | ND |
| 2019-11-14 | Q1976997003 | ND |