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EWG's Tap Water Database — 2019 UPDATE

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Thallium

Pennsylvania American Royersford

Thalium is a naturally occurring metal released into the environment from metal smelting and coal burning. Exposure to too much thalium can cause hair loss, liver damage, reduced sperm motility and nervous system impairment.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND60ND
2013ND10ND
2014ND10ND
2015ND50ND
2016ND10ND
2017ND10ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for thallium 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) 2 ppb

The legal limit for thallium, established in 1992, was based on analytical detection limits at the time that the standard was set.

ppb = parts per billion

All test results

Date Lab ID Result
2012-04-1017211501ND
2012-08-0718201301ND
2012-08-0718201601ND
2012-08-0718201701ND
2012-08-0718201801ND
2012-08-0718895301ND
2013-08-0823076901ND
2014-08-1226516801ND
2015-08-0613131568ND
2015-08-0613131582ND
2015-08-0613131595ND
2015-08-0613131555ND
2015-09-1613260298ND
2016-08-0414730040ND
2017-08-1516560909ND