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EWG's Tap Water Database — 2021 UPDATE

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Thallium

Hot Springs Utilities

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.

 

18

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
2014ND20ND
2015ND20ND
2016ND30ND
2017ND70ND
2018ND20ND
2019ND20ND

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
2014-04-02140940002ND
2014-11-17Y143240002ND
2015-04-01Y150920001ND
2015-10-06Y152820005ND
2016-04-06Y160980006ND
2016-07-06Y161890031ND
2016-10-03Y162800008ND
2017-01-04Y170050021ND
2017-04-04Y170960008ND
2017-04-04Y170970003ND
2017-07-04Y171870086ND
2017-08-30Y172420035ND
2017-10-03Y172780005ND
2017-11-29Y173340018ND
2018-04-02Y180950002ND
2018-10-01Y182770008ND
2019-04-17Y191080005ND
2019-10-01Y192770001ND