2,4,5-TP (Silvex)
Elsinore Valley Municipal Water District
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | N/A | 0 | 0 | N/A |
2015 | ND | 1 | 0 | ND |
2016 | ND | 18 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 31 | 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 |
---|---|---|
2015-05-07 | 4790-038-1350 | ND |
2016-02-03 | 4790-050-1130 | ND |
2016-02-03 | 4790-049-1315 | ND |
2016-05-26 | 4790-052-1030 | ND |
2016-08-11 | 4790-010-1110 | ND |
2016-08-11 | 4790-037-1220 | ND |
2016-08-17 | 4790-022-1320 | ND |
2016-08-17 | 4790-031-1150 | ND |
2016-08-17 | 4790-012-1240 | ND |
2016-08-25 | 4790-004-1505 | ND |
2016-08-25 | 4790-007-1040 | ND |
2016-08-25 | 4790-053-0910 | ND |
2016-11-09 | 4790-031-1100 | ND |
2016-11-09 | 4790-010-1000 | ND |
2016-11-09 | 4790-012-1135 | ND |
2016-11-17 | 4790-022-1412 | ND |
2016-11-17 | 4790-038-1500 | ND |
2016-11-18 | 4790-053-0830 | ND |
2016-11-23 | 4790-037-1300 | ND |
2017-04-12 | 9590-052-1345 | ND |
2017-04-28 | 9590-002-1310 | ND |
2018-07-26 | 4790-049-1328 | ND |
2018-07-26 | 4790-050-1348 | ND |
2019-01-09 | 4790-012-1350 | ND |
2019-01-24 | 4790-053-0900 | ND |
2019-03-27 | 4790-038-1008 | ND |
2019-06-07 | 4790-052-1045 | ND |
2019-06-11 | 4790-053-1110 | ND |
2019-06-13 | 4790-012-0938 | ND |
2019-06-18 | 4790-037-1128 | ND |
2019-06-20 | 4790-031-1112 | ND |
2019-06-25 | 4790-022-1148 | ND |
2019-06-25 | 4790-049-1200 | ND |
2019-06-25 | 4790-021-1245 | ND |
2019-06-25 | 4790-050-1230 | ND |
2019-08-19 | 4790-002-1345 | ND |
2019-08-20 | 4790-049-1055 | ND |
2019-09-04 | 4790-012-1520 | ND |
2019-09-05 | 4790-007-1110 | ND |
2019-09-10 | 4790-053-1022 | ND |
2019-09-11 | 4790-022-1355 | ND |
2019-09-12 | 4790-038-1250 | ND |
2019-09-12 | 4790-021-1200 | ND |
2019-09-18 | 4790-037-1311 | ND |
2019-09-18 | 4790-031-1430 | ND |
2019-10-10 | 4790-002-0930 | ND |
2019-11-06 | 4790-007-0926 | ND |
2019-11-12 | 4790-004-1255 | ND |
2019-12-12 | 4790-007-1034 | ND |
2019-12-17 | 4790-010-1306 | ND |
2019-12-17 | 4790-004-0900 | ND |
2019-12-18 | 4790-010-1306 | ND |
2019-12-18 | 4790-050-1145 | ND |
2019-12-18 | 4790-049-1120 | ND |