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EWG's Tap Water Database — 2019 UPDATE

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2,4,5-TP (Silvex)

Doyon Utilities Jber - Richardson

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.

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND160ND
2013N/A00N/A
2014N/A00N/A
2015ND120ND
2016ND10ND
2017ND40ND

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
2012-01-23PE*2581088ND
2012-01-23PE*2581102ND
2012-01-23PE*2581110ND
2012-01-23PE*2581112ND
2012-01-23PE*2581075ND
2012-04-23PE*2629744ND
2012-04-23PE*2629760ND
2012-04-23PE*2629781ND
2012-04-23PE*2629806ND
2012-07-24PE*2682051ND
2012-07-24PE*2682123ND
2012-07-24PE*2682076ND
2012-11-26PE*2745625ND
2012-11-26PE*2745639ND
2012-11-26PE*2745649ND
2012-11-26PE*2745659ND
2015-02-24PE*3195306ND
2015-02-24PE*3195670ND
2015-02-24PE*3195337ND
2015-06-23PE*3268439ND
2015-06-23PE*3268596ND
2015-06-23PE*3268611ND
2015-09-14PE*3322323ND
2015-09-14PE*3322334ND
2015-09-14PE*3322351ND
2015-12-07PE*3371142ND
2015-12-07PE*3371155ND
2015-12-07PE*3371165ND
2016-03-29PE*3422156ND
2017-03-06PE*3649756ND
2017-05-22PE*3698682ND
2017-08-28PE*3767826ND
2017-10-11PE*3797938ND