Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Klamath Falls Water Department

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND140ND
2019N/A00N/A
2020N/A00N/A
2021ND60ND
2022ND60ND
2023N/A00N/A

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
2018-07-19180789003A-SND
2018-07-19180789004A-SND
2018-07-19180789005A-SND
2018-07-19180789006A-SND
2018-07-19180789007A-SND
2018-07-1918078901A-SND
2018-07-251807B4301A-SND
2018-10-04181023801A-SND
2018-10-04181024401A-SND
2018-10-04181024501A-SND
2018-10-04181024001A-SND
2018-10-04181023901A-SND
2018-10-04181024201A-SND
2018-10-04181024101A-SND
2021-07-222107118104-SND
2021-07-222107118103-SND
2021-07-222107118102-SND
2021-07-222107118105-SND
2021-07-222107118106-SND
2021-07-222107118101-SND
2022-08-1622080801-01-SND
2022-08-1622080806-01-SND
2022-08-1622080803-01-SND
2022-08-1622080809-01-SND
2022-08-1622080799-01-SND
2022-08-1622080802-01-SND