Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

2,4,5-TP (Silvex)

City of Sugar Land

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND10ND
2014ND90ND
2015ND10ND
2016ND10ND
2017ND60ND

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
2013-12-03AC36538ND
2014-02-11AC42272ND
2014-03-26AC48396ND
2014-03-26AC48398ND
2014-03-26AC48397ND
2014-03-26AC48393ND
2014-03-26AC48395ND
2014-03-26AC48394ND
2014-04-29AC52120ND
2014-07-23AC60726ND
2015-01-22AC77382ND
2016-02-02AD21569ND
2017-01-04AD63037ND
2017-03-22AD76421ND
2017-03-22AD76427ND
2017-03-22AD76419ND
2017-03-22AD76420ND
2017-04-03AD78148ND