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EWG's Tap Water Database — 2019 UPDATE

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2,4,5-TP (Silvex)

Florin County Water District

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.

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND60ND
2014ND70ND
2015ND170ND
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
2012-05-305810-009-0956ND
2012-08-295810-003-0937ND
2013-04-155810-012-1325ND
2013-12-125810-007-0950ND
2013-12-125810-010-1304ND
2013-12-125810-006-1427ND
2013-12-125810-002-1114ND
2013-12-125810-004-1155ND
2014-04-305810-006-1241ND
2014-04-305810-003-0927ND
2014-04-305810-007-0841ND
2014-04-305810-002-1017ND
2014-04-305810-009-1200ND
2014-04-305810-004-1054ND
2014-08-075810-012-1010ND
2015-02-115810-012-0948ND
2015-02-115810-010-1305ND
2015-02-115810-007-0906ND
2015-02-115810-006-1402ND
2015-02-115810-004-1115ND
2015-02-115810-009-1216ND
2015-05-275810-003-1012ND
2015-05-275810-012-0923ND
2015-05-275810-009-1159ND
2015-05-275810-004-1053ND
2015-05-275810-006-1258ND
2015-09-235810-003-1044ND
2015-09-235810-004-1147ND
2015-09-235810-006-1336ND
2015-09-235810-007-0932ND
2015-09-235810-009-1247ND
2015-09-235810-012-1009ND