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EWG's Tap Water Database — 2019 UPDATE

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2,4,5-TP (Silvex)

City of Avondale

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.

 

79

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND220ND
2013ND240ND
2014ND180ND
2015ND10ND
2016ND130ND
2017ND10ND

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
2012-02-212021575-01SND
2012-02-212021568-01SND
2012-02-222021662-01SND
2012-02-222021661-01SND
2012-02-222021659-01SND
2012-05-072050554-01SND
2012-05-072050552-01SND
2012-05-072050550-01SND
2012-05-092050845-01SND
2012-05-092050846-01SND
2012-05-222051723-01SND
2012-08-072080599-01SND
2012-08-072080597-01SND
2012-08-082080742-01SND
2012-08-082080741-01SND
2012-08-132081047-01SND
2012-08-132081046-01SND
2012-11-122110805-01SND
2012-11-122110804-01SND
2012-11-142111064-01SND
2012-11-142111058-01SND
2012-11-152111192-01SND
2013-02-053020315-01SND
2013-02-063020474-01SND
2013-02-073020590-01SND
2013-02-073020587-01SND
2013-02-133021057-01SND
2013-02-143021154-01SND
2013-05-023050231-01SND
2013-05-073050603-01ND
2013-05-083050746-01ND
2013-05-083050744-01ND
2013-05-133051061-01SND
2013-05-133051057-01SND
2013-08-063080462-01SND
2013-08-083080750-01SND
2013-08-083080748-01SND
2013-08-083080746-01SND
2013-08-153081405-01SND
2013-08-153081410-01SND
2013-10-303102598-01SND
2013-10-303102597-01SND
2013-10-313102691-01SND
2013-10-313102690-01SND
2013-11-143111193-01SND
2013-12-193121778-01SND
2014-01-274012115-01ND
2014-01-274012114-01SND
2014-01-284012236-01ND
2014-01-284012237-01SND
2014-01-294012322-01SND
2014-02-134021148-01SND
2014-05-204051823-01SND
2014-05-204051822-01SND
2014-05-204051718-01SND
2014-05-204051717-01SND
2014-05-204051714-01SND
2014-05-224052004-01SND
2014-08-064080590-01SND
2014-08-064080578-01SND
2014-08-074080712-01SND
2014-08-074080710-01SND
2014-08-07408071-01SND
2014-08-074080708-01SND
2015-05-145051253-06ND
2016-05-046050460-03SND
2016-05-046050460-01SND
2016-05-046050460-02SND
2016-05-046050460-04SND
2016-05-046050460-05SND
2016-05-046050460-06SND
2016-08-166081528-02ND
2016-11-156111375-06ND
2016-11-156111375-05ND
2016-11-156111375-04ND
2016-11-156111375-03ND
2016-11-156111375-02ND
2016-11-156111375-01ND
2017-02-097020939-03ND