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EWG's Tap Water Database — 2019 UPDATE

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Thallium

City of Wolfforth

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013N/A00N/A
20140.0274 ppb81ND - 0.219 ppb
2015N/A00N/A
2016N/A00N/A
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
2012-01-31AB79569ND
2014-01-30Q1403131040ND
2014-01-30Q1403131006ND
2014-01-30Q1403131007ND
2014-01-30Q14031310080.219 ppb
2014-01-30Q1403131009ND
2014-01-30Q1403131010ND
2014-01-30Q1403131011ND
2014-03-26Q1409873006ND
2017-11-30Q1761852003ND