2,4,5-TP (Silvex)
City of Chandler
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.
154
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 |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 67 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 77 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2015-01-13 | 550-38296-1 | ND |
| 2015-01-13 | 550-38298-1 | ND |
| 2015-01-13 | 550-38301-1S | ND |
| 2015-01-15 | 550-38538-1 | ND |
| 2015-01-15 | 550-38540-1S | ND |
| 2015-01-15 | 550-38544-1 | ND |
| 2015-01-20 | 550-38732-1 | ND |
| 2015-01-20 | 550-38733-1 | ND |
| 2015-01-20 | 550-38736-1 | ND |
| 2015-01-22 | 550-38880-1 | ND |
| 2015-01-22 | 550-38882-1 | ND |
| 2015-01-22 | 550-38883-1 | ND |
| 2015-01-26 | 550-39002-1 | ND |
| 2015-01-26 | 550-39006-1 | ND |
| 2015-01-26 | 550-39007-1 | ND |
| 2015-01-27 | 550-39062-1 | ND |
| 2015-01-27 | 550-39064-1 | ND |
| 2015-01-27 | 550-39066-1 | ND |
| 2015-01-29 | 550-39227-1 | ND |
| 2015-01-29 | 550-39230-1 | ND |
| 2015-01-29 | 550-39232-1 | ND |
| 2015-02-02 | 550-39342-1 | ND |
| 2015-02-02 | 550-39345-1S | ND |
| 2015-02-02 | 550-39348-1 | ND |
| 2015-02-03 | 550-39458-1 | ND |
| 2015-02-03 | 550-39459-1S | ND |
| 2015-02-03 | 550-39460-1 | ND |
| 2015-04-13 | 550-43129-1 | ND |
| 2015-04-13 | 550-43130-1S | ND |
| 2015-04-13 | 550-43131-1 | ND |
| 2015-04-13 | 550-43132-1S | ND |
| 2015-04-15 | 550-43275-1S | ND |
| 2015-04-15 | 550-43280-1 | ND |
| 2015-04-22 | 550-43628-1S | ND |
| 2015-07-14 | 550-47832-1S | ND |
| 2015-07-14 | 550-47832-3S | ND |
| 2015-07-14 | 550-47832-5S | ND |
| 2015-07-14 | 550-47832-7 | ND |
| 2015-07-15 | 550-47927-1S | ND |
| 2015-07-15 | 550-47927-3S | ND |
| 2015-07-15 | 550-47927-5S | ND |
| 2015-07-16 | 550-48011-1S | ND |
| 2015-07-16 | 550-48011-3 | ND |
| 2015-07-16 | 550-48011-5S | ND |
| 2015-07-16 | 550-48011-7S | ND |
| 2015-07-16 | 550-48011-9 | ND |
| 2015-07-22 | 550-48251-1S | ND |
| 2015-07-22 | 550-48251-3S | ND |
| 2015-07-22 | 550-48251-5S | ND |
| 2015-07-22 | 550-48251-7S | ND |
| 2015-07-23 | 550-48380-1S | ND |
| 2015-07-23 | 550-48380-3S | ND |
| 2015-07-23 | 550-48380-5S | ND |
| 2015-07-23 | 550-48380-7S | ND |
| 2015-07-27 | 550-48489-1 | ND |
| 2015-07-27 | 550-48489-3S | ND |
| 2015-07-27 | 550-48489-5S | ND |
| 2015-07-27 | 550-48489-7S | ND |
| 2015-07-29 | 550-048582-1S | ND |
| 2015-07-29 | 550-48582-3S | ND |
| 2015-11-03 | 550-53731-2T | ND |
| 2015-11-03 | 550-53731-3T | ND |
| 2015-11-03 | 550-53731-6T | ND |
| 2015-11-05 | 550-53917-1T | ND |
| 2015-11-05 | 550-53917-3 | ND |
| 2015-11-05 | 550-53917-5T | ND |
| 2015-11-18 | 550-54553-1T | ND |
| 2016-12-29 | 550-75055-1S | ND |
| 2017-06-12 | 550-84299-1 SOC | ND |
| 2017-06-19 | 550-84660-1 SOC | ND |
| 2017-06-28 | 3723402 | ND |
| 2017-08-30 | 550-88911-1SOC | ND |
| 2017-08-31 | 550-89003-1SOC | ND |
| 2017-10-12 | 550-91428-5 SOC | ND |
| 2018-01-23 | 550-96737-1 SOC | ND |
| 2018-01-23 | 550-96737-2 SOC | ND |
| 2018-01-23 | 550-96737-3 SOC | ND |
| 2018-01-23 | 550-96737-4 SOC | ND |
| 2018-01-24 | 550-96821-1 SOC | ND |
| 2018-01-24 | 550-96821-2 SOC | ND |
| 2018-01-24 | 550-96821-3 SOC | ND |
| 2018-01-24 | 550-96821-4 SOC | ND |
| 2018-01-24 | 550-96821-5 SOC | ND |
| 2018-01-25 | 550-96914-1 SOC | ND |
| 2018-01-25 | 550-96914-2 SOC | ND |
| 2018-01-25 | 550-96914-3 SOC | ND |
| 2018-01-25 | 550-96914-4 SOC | ND |
| 2018-01-25 | 550-96914-5 SOC | ND |
| 2018-01-29 | 550-97023-2 SOC | ND |
| 2018-01-29 | 550-97023-3 SOC | ND |
| 2018-01-29 | 550-97023-4 SOC | ND |
| 2018-01-31 | 550-97179-1 SOC | ND |
| 2018-02-01 | 550-97256-1 SOC | ND |
| 2018-02-01 | 550-97256-2 SOC | ND |
| 2018-02-01 | 550-97256-3 SOC | ND |
| 2018-02-01 | 550-97256-4 SOC | ND |
| 2018-03-05 | 550-98895-1 SOC | ND |
| 2018-03-05 | 550-98895-2 SOC | ND |
| 2018-03-05 | 550-98895-3 SOC | ND |
| 2018-03-05 | 550-98895-5 SOC | ND |
| 2018-03-05 | 550-98895-6 | ND |
| 2018-03-06 | 550-98981-1 | ND |
| 2018-04-17 | 550-101375-2 SOC | ND |
| 2018-04-17 | 550-101375-3 | ND |
| 2018-04-18 | 550-101450-2 SOC | ND |
| 2018-04-18 | 550-101450-4 SOC | ND |
| 2018-04-19 | 550-101546-2 | ND |
| 2018-04-19 | 550-101546-4 SOC | ND |
| 2018-04-20 | 550-101629-1 SOC | ND |
| 2018-05-17 | 550-103120-2 SOC | ND |
| 2018-06-28 | 550-105094-2 SOC | ND |
| 2018-06-28 | 550-105094-3 SOC | ND |
| 2018-07-23 | 550-106554-1 | ND |
| 2018-07-23 | 550-106554-2 | ND |
| 2018-07-23 | 550-106554-3 SOC | ND |
| 2018-07-23 | 550-106554-4 SOC | ND |
| 2018-07-23 | 550-106554-5 | ND |
| 2018-07-23 | 550-106554-6 SOC | ND |
| 2018-07-24 | 550-106603-1 | ND |
| 2018-07-24 | 550-106603-2 | ND |
| 2018-07-24 | 550-106603-3 | ND |
| 2018-07-24 | 550-106603-4 SOC | ND |
| 2018-07-24 | 550-106603-5 | ND |
| 2018-07-25 | 550-106658-1 | ND |
| 2018-07-25 | 550-106658-2 SOC | ND |
| 2018-07-25 | 550-106658-3 SOC | ND |
| 2018-07-25 | 550-106658-4 SOC | ND |
| 2018-07-25 | 550-106658-5 | ND |
| 2018-07-25 | 550-106658-6 | ND |
| 2018-07-26 | 550-106757-1 SOC | ND |
| 2018-07-26 | 550-106757-2 SOC | ND |
| 2018-07-26 | 550-106757-3 SOC | ND |
| 2018-07-26 | 550-106757-4 SOC | ND |
| 2018-07-26 | 550-106757-5 SOC | ND |
| 2018-07-26 | 550-106757-6 | ND |
| 2018-07-30 | 550-106907-1 SOC | ND |
| 2018-07-30 | 550-106907-2 SOC | ND |
| 2018-07-30 | 550-106907-3 | ND |
| 2018-07-30 | 550-106907-4 | ND |
| 2018-07-30 | 550-106907-5 SOC | ND |
| 2018-08-21 | 550-108374-1 | ND |
| 2018-10-17 | 550-111920-1 | ND |
| 2018-10-18 | 550-111989-1 SOC | ND |
| 2018-10-18 | 550-111989-3 SOC | ND |
| 2018-10-22 | 550-112146-2 | ND |
| 2018-10-22 | 550-112146-4 | ND |
| 2018-10-23 | 550-112224-1 | ND |
| 2018-10-24 | 550-112296-1 | ND |
| 2018-10-24 | 550-112296-2 | ND |
| 2018-10-25 | 550-112373-1 | ND |
| 2018-10-31 | 550-112584-1 SOC | ND |
| 2019-01-28 | 201901280135S | ND |
| 2019-01-28 | 201901280136S | ND |
| 2019-07-22 | 201907220239S | ND |