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EWG's Tap Water Database — 2021 UPDATE

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Picloram

City of Conroe

Picloram is a herbicide that in studies of laboratory animals has been linked with reduced testicular size and damage to the liver and thyroid.

MORE ABOUT THIS CONTAMINANT

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND100ND
2015N/A00N/A
2016ND20ND
2017ND100ND
2018ND80ND
2019ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 166 ppb

The EWG Health Guideline of 166 ppb for picloram 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 change to internal organs.

EPA Maximum Contaminant
Level (MCL) 500 ppb

The legal limit for picloram, established in 1992, was based on toxicity studies in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-04-09AC49990ND
2014-04-09AC49988ND
2014-04-09AC49991ND
2014-04-09AC49992ND
2014-04-09AC49986ND
2014-04-09AC49989ND
2014-04-09AC49993ND
2014-04-09AC49994ND
2014-04-09AC49984ND
2014-05-28AC55356ND
2016-01-11AD17401ND
2016-01-11AD17403ND
2017-01-09AD63709ND
2017-01-09AD63713ND
2017-01-09AD63714ND
2017-04-11AD79265ND
2017-04-11AD79267ND
2017-04-11AD79266ND
2017-05-18AD84931ND
2017-05-18AD84933ND
2017-05-18AD84932ND
2017-05-18AD84930ND
2018-03-08AE17657ND
2018-03-08AE17656ND
2018-05-08AE25626ND
2018-05-08AE25627ND
2018-07-02AE32305ND
2018-07-02AE32308ND
2018-10-01AE42275ND
2018-10-01AE42279ND
2019-03-11AE57897ND
2019-03-11AE57898ND