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EWG's Tap Water Database — 2019 UPDATE

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2,4,5-TP (Silvex)

Lubbock Public Water System

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.

 

13

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
2013ND30ND
2014ND20ND
2015ND40ND
2016ND20ND
2017ND20ND

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
2013-06-11Q1302096008ND
2013-08-06Q1304984003ND
2013-12-10Q1317110003ND
2014-01-22Q1401929007ND
2014-09-17Q1445027003ND
2015-02-03Q1504173003ND
2015-02-11Q1505820004ND
2015-04-07Q1513290002ND
2015-04-22Q1514946009ND
2016-02-03Q1604716013ND
2016-04-06Q1613543007ND
2017-08-10Q1734366009ND
2017-09-27Q1746701009ND