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EWG's Tap Water Database — 2019 UPDATE

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2,4,5-TP (Silvex)

Sandy City 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.

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND150ND
2013N/A00N/A
2014ND50ND
2015ND50ND
2016ND40ND
2017ND20ND

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 Result
2012-06-14ND
2012-06-15ND
2012-08-02ND
2012-08-03ND
2012-08-07ND
2012-08-07ND
2012-08-08ND
2012-08-08ND
2012-08-08ND
2012-08-09ND
2012-08-14ND
2012-10-09ND
2012-10-09ND
2012-11-27ND
2012-11-27ND
2014-02-20ND
2014-05-30ND
2014-05-30ND
2014-06-25ND
2014-07-21ND
2015-02-25ND
2015-07-06ND
2015-07-14ND
2015-07-16ND
2015-07-22ND
2016-06-14ND
2016-06-21ND
2016-06-22ND
2016-06-22ND
2017-06-22ND
2017-09-01ND