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EWG's Tap Water Database — 2019 UPDATE

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2,4,5-TP (Silvex)

Epcor Water - Sun City

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.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND180ND
2013N/A00N/A
2014N/A00N/A
2015ND160ND
2016N/A00N/A
2017N/A00N/A

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
2012-02-132020903-01ND
2012-02-132020901-01ND
2012-02-132020900-01SND
2012-02-132020899-01SND
2012-02-202021443-03SND
2012-02-202021443-02SND
2012-02-202021443-01SND
2012-03-212031576-02ND
2012-03-212031576-01ND
2012-07-202071684-03SND
2012-07-202071684-02SND
2012-07-202071684-01SND
2012-07-232071775-03SND
2012-07-232071775-02SND
2012-07-232071775-01ND
2012-07-242071898-02SND
2012-07-242071898-03SND
2012-07-242071898-01SND
2015-01-155011290-01SND
2015-01-155011289-01ND
2015-01-225011809-01SND
2015-02-055020637-01SND
2015-02-055020636-01SND
2015-03-055030501-01SND
2015-06-025060272-01SND
2015-06-115061157-01ND
2015-07-215071938-01SND
2015-07-215071937-01ND
2015-07-295072657-01ND
2015-08-075080692-01ND
2015-08-075080691-01ND
2015-08-125081113-01ND
2015-10-095101232-01ND
2015-10-095101233-01TND