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EWG's Tap Water Database — 2019 UPDATE

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Thallium

Avon Water Company

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND80ND
2015N/A00N/A
2016N/A00N/A
2017ND80ND

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
2014-01-16E402153-8IOC1ND
2014-02-04E402153-7IOC1ND
2014-02-04E402153-6IOC1ND
2014-02-04E402153-5IOC1ND
2014-02-04E402153-4IOC1ND
2014-02-04E402153-3IOC1ND
2014-02-04E402153-2IOC1ND
2014-02-04E402153-1IOC1ND
2017-02-24E702M07-8IOC1ND
2017-02-24E702M07-7IOC1ND
2017-02-24E702M07-6IOC1ND
2017-02-24E702M07-5IOC1ND
2017-02-24E702M07-4IOC1ND
2017-02-24E702M07-3IOC1ND
2017-02-24E702M07-2IOC1ND
2017-03-20D7C1331-01IOCND