2,4,5-TP (Silvex)
Sun Valley Farms Unit Vi
NOTE: Sun Valley Farms Unit Vi purchases water from Town of Queen Creek which is required to test for 2,4,5-tp (silvex). Sample information shown below was taken by Town of Queen Creek.
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 13 | 0 | ND |
| 2019 | ND | 8 | 0 | ND |
| 2020 | ND | 21 | 0 | ND |
| 2021 | ND | 16 | 0 | ND |
| 2022 | ND | 11 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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
NOTE: Sun Valley Farms Unit Vi purchases water from Town of Queen Creek which is required to test for 2,4,5-tp (silvex). Sample information shown below was taken by Town of Queen Creek.
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-18 | 201801180389S | ND |
| 2018-04-24 | 201804250399SA | ND |
| 2018-04-24 | 201804250399SC | ND |
| 2018-04-24 | 201804250399SB | ND |
| 2018-05-30 | 201805310317SA | ND |
| 2018-05-30 | 201805310317SB | ND |
| 2018-07-18 | 201807180477S | ND |
| 2018-07-18 | 201807180477SA | ND |
| 2018-07-18 | 201807180477SB | ND |
| 2018-07-18 | 201807180477SD | ND |
| 2018-08-01 | 201808020191SA | ND |
| 2018-08-01 | 201808020191SB | ND |
| 2018-10-03 | 201810030298S | ND |
| 2019-02-13 | 201902130133SB | ND |
| 2019-02-13 | 201902130133SA | ND |
| 2019-06-03 | 201906030212SA | ND |
| 2019-06-03 | 201906030212SB | ND |
| 2019-07-25 | 201907250175S | ND |
| 2019-09-19 | 201909190002S | ND |
| 2019-10-24 | 201910240423SA | ND |
| 2019-10-24 | 201910240423SB | ND |
| 2020-02-11 | 202002120019SC | ND |
| 2020-02-11 | 202002120019SB | ND |
| 2020-02-11 | 202002120019SA | ND |
| 2020-02-11 | 202002120016SB | ND |
| 2020-02-11 | 202002120016SA | ND |
| 2020-02-11 | 202002120016SC | ND |
| 2020-03-02 | 202003020116SA | ND |
| 2020-03-02 | 20200302116SB | ND |
| 2020-04-08 | 202004090032SC | ND |
| 2020-04-08 | 202004090032SB | ND |
| 2020-04-08 | 202004090032SA | ND |
| 2020-04-08 | 202004090028SC | ND |
| 2020-04-08 | 202004090028SB | ND |
| 2020-04-08 | 202004090028SA | ND |
| 2020-07-08 | 202007090046SA | ND |
| 2020-07-08 | 202007090046SB | ND |
| 2020-07-08 | 202007090046SC | ND |
| 2020-07-08 | 202007090046SD | ND |
| 2020-07-08 | 202007090046SE | ND |
| 2020-10-07 | 202010080038SA | ND |
| 2020-10-07 | 202010080038SB | ND |
| 2021-01-14 | 202101150103SC | ND |
| 2021-01-14 | 202101150103SB | ND |
| 2021-01-14 | 202101150103SA | ND |
| 2021-01-14 | 202101150101SB | ND |
| 2021-01-14 | 202101150101SC | ND |
| 2021-01-14 | 202101150101SA | ND |
| 2021-03-11 | 202103120002S | ND |
| 2021-04-01 | 202104020030SA | ND |
| 2021-04-01 | 202104020030SB | ND |
| 2021-04-01 | 202104020030SC | ND |
| 2021-04-01 | 202104020030SD | ND |
| 2021-07-01 | 202107020031SA | ND |
| 2021-07-01 | 202107020031SB | ND |
| 2021-07-01 | 202107020031SC | ND |
| 2021-10-14 | 202110150010SA | ND |
| 2021-10-14 | 202110150010SB | ND |
| 2022-02-02 | 202202030103SA | ND |
| 2022-02-02 | 202202030103SC | ND |
| 2022-02-02 | 202202030103SB | ND |
| 2022-06-01 | 380-2499-5SA | ND |
| 2022-06-01 | 380-2499-5SB | ND |
| 2022-06-01 | 380-2499-5SC | ND |
| 2022-06-01 | 380-2499-5SD | ND |
| 2022-07-14 | 380-9329-3SA | ND |
| 2022-07-14 | RT | ND |
| 2022-10-05 | 380-23185-2 | ND |
| 2022-11-28 | 380-29471-1 | ND |
| 2023-03-08 | 380-39709-1 | ND |
| 2023-04-12 | 380-43463-11SA | ND |
| 2023-04-12 | 380-43463-11SB | ND |
| 2023-04-12 | 380-43463-11SC | ND |
| 2023-04-12 | 380-43463-11SD | ND |
| 2023-04-12 | 380-43463-6SA | ND |
| 2023-04-12 | 380-43463-6SB | ND |
| 2023-04-12 | 380-43463-6SC | ND |
| 2023-04-12 | 380-43463-6SD | ND |
| 2023-04-12 | 380-43463-6SE | ND |
| 2023-07-12 | 380-54376-12SA | ND |
| 2023-07-12 | 380-54376-6SE | ND |
| 2023-07-12 | 380-54376-6SD | ND |
| 2023-07-12 | 380-54376-6SC | ND |
| 2023-07-12 | 380-54376-6SB | ND |
| 2023-07-12 | 380-54376-6SA | ND |
| 2023-07-12 | 380-54376-12SD | ND |
| 2023-07-12 | 380-54376-12SC | ND |
| 2023-07-12 | 380-54376-12SB | ND |
| 2023-07-20 | 380-55635-1 | ND |
| 2023-10-03 | 380-65286-2 | ND |
| 2023-10-26 | 380-68936-1 | ND |