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EWG's Tap Water Database — 2019 UPDATE

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Thallium

Sandy City Water System

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND120ND
2013ND40ND
2014ND20ND
2015ND30ND
2016ND40ND
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 Result
2012-06-14ND
2012-06-14ND
2012-06-15ND
2012-06-15ND
2012-08-02ND
2012-08-03ND
2012-08-07ND
2012-08-09ND
2012-08-09ND
2012-08-09ND
2012-11-27ND
2012-11-27ND
2013-06-18ND
2013-06-18ND
2013-07-02ND
2013-07-02ND
2014-02-20ND
2014-07-21ND
2015-07-14ND
2015-07-16ND
2015-07-22ND
2016-06-14ND
2016-06-27ND
2016-07-14ND
2016-07-14ND
2017-09-01ND