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EWG's Tap Water Database — 2021 UPDATE

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2,4,5-TP (Silvex)

Cottonwood Municipal Water Vv6

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

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016ND120ND
2017N/A00N/A
2018N/A00N/A
2019ND120ND

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
2016-03-07201603090146SCND
2016-03-07201603090146SBND
2016-03-07201603090146SAND
2016-03-07201603090144SCND
2016-03-07201603090144SBND
2016-03-07201603090144SAND
2016-08-23201608240125SAND
2016-08-23201608240127SCND
2016-08-23201608240127SBND
2016-08-23201608240127SAND
2016-08-23201608240125SCND
2016-08-23201608240125SBND
2019-02-19201902200086SCND
2019-02-19201902200086SBND
2019-02-19201902200086SAND
2019-02-19201902200082SCND
2019-02-19201902200082SBND
2019-02-19201902200082SAND
2019-05-07201905080040SAND
2019-05-07201905080044SCND
2019-05-07201905080044SBND
2019-05-07201905080044SAND
2019-05-07201905080040SCND
2019-05-07201905080040SBND