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EWG's Tap Water Database — 2021 UPDATE

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2,4,5-TP (Silvex)

East Jefferson Waterworks District 1

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

 

60

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND60ND
2015ND120ND
2016ND120ND
2017ND60ND
2018ND120ND
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
2014-01-06AD88200ND
2014-01-06AD88198ND
2014-01-06AD88200ND
2014-01-06AD88199ND
2014-01-06AD88198ND
2014-01-06AD88199ND
2015-02-2335177313003ND
2015-02-2335177313004ND
2015-02-2335177313005ND
2015-02-2335177313005ND
2015-02-2335177313004ND
2015-02-2335177313003ND
2015-09-3035209766005ND
2015-09-3035209766004ND
2015-09-3035209766003ND
2015-09-3035209766005ND
2015-09-3035209766004ND
2015-09-3035209766003ND
2016-01-2035226299003ND
2016-01-2035226299004ND
2016-01-2035226299005ND
2016-01-2035226299005ND
2016-01-2035226299004ND
2016-01-2035226299003ND
2016-12-0735282147001ND
2016-12-0735282147002ND
2016-12-0735282147003ND
2016-12-0735282147002ND
2016-12-0735282147001ND
2016-12-0735282147003ND
2017-02-0935294515005ND
2017-02-0935294515004ND
2017-02-0935294515003ND
2017-02-0935294515003ND
2017-02-0935294515005ND
2017-02-0935294515004ND
2018-03-1535380393001ND
2018-03-1535380393002ND
2018-03-1535380393003ND
2018-03-1535380393001ND
2018-03-1535380393002ND
2018-03-1535380393003ND
2018-08-1535411635001ND
2018-08-1535411635003ND
2018-08-1535411635002ND
2018-08-1535411635001ND
2018-08-1535411635003ND
2018-08-1535411635002ND
2019-02-2735451094001ND
2019-02-2735451093001ND
2019-02-2735451088001ND
2019-02-2735451088001ND
2019-02-2735451093001ND
2019-02-2735451094001ND
2019-08-0135486654001ND
2019-08-0135486659001ND
2019-08-0135486656001ND
2019-08-0135486654001ND
2019-08-0135486659001ND
2019-08-0135486656001ND