Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Fairview Union Water System

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND60ND
2020ND20ND
2021ND20ND
2022ND20ND
2023ND20ND

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

Date Lab ID Result
2018-01-2235370033001ND
2018-01-2235370033001ND
2018-07-3135408507001ND
2018-07-3135408507001ND
2019-02-2535450972001ND
2019-02-2535450972001ND
2019-08-2635493338001ND
2019-08-2635493338001ND
2019-09-2535500914001ND
2019-09-2535500914001ND
2020-02-1735531817001ND
2020-09-1735578826001ND
2021-01-1435604986002ND
2021-08-1835657244007ND
2022-02-0135694942005ND
2022-08-0835738986003ND
2023-03-0635784946001ND
2023-08-2235823283001ND