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EWG's Tap Water Database — 2021 UPDATE

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2,4,5-TP (Silvex)

Bend 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.

MORE ABOUT THIS CONTAMINANT

 

38

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND30ND
2015N/A00N/A
2016ND170ND
2017ND60ND
2018ND60ND
2019ND60ND

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
2014-06-03B4F0307011-SND
2014-09-15B4I151501-SND
2014-09-15B4I150501-SND
2016-01-201603130-SND
2016-01-201603131-SND
2016-01-201603132-SND
2016-01-201603133-SND
2016-01-201603134-SND
2016-04-061617065-SND
2016-04-061617067-SND
2016-04-061617066-SND
2016-04-061617068-SND
2016-09-291659515-SND
2016-09-291659517-SND
2016-09-291659531-SND
2016-09-291659532-SND
2016-11-161669808-SND
2016-11-161669807-SND
2016-11-161669788-SND
2016-11-161669804-SND
2017-05-091724558-SND
2017-05-091724568-SND
2017-05-101724757-SND
2017-08-091744420-SND
2017-08-091744423-SND
2017-08-091744418-SND
2018-08-01808021501-SND
2018-08-01808021601-SND
2018-08-01808021401-SND
2018-10-03810041801-SND
2018-10-03810041601-SND
2018-10-03810041701-SND
2019-08-07C9H070501-SND
2019-08-07C9H070601-SND
2019-08-07B9H070401-SND
2019-12-02912041701-SND
2019-12-02912041702-SND
2019-12-02912041703-SND