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EWG's Tap Water Database — 2021 UPDATE

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Thallium

Garden City

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.

MORE ABOUT THIS CONTAMINANT

 

69

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND90ND
2015ND120ND
20160.0308 ppb121ND - 0.370 ppb
2017ND100ND
2018ND110ND
20190.0387 ppb151ND - 0.580 ppb

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
2014-08-151408B39-002-PRIND
2014-08-151408B39-004-PRIND
2014-08-151408B39-005-PRIND
2014-08-151408B39-003-PRIND
2014-08-151408B39-001-PRIND
2014-08-181408C56-003-PRIND
2014-08-181408C56-001-PRIND
2014-08-181408C56-002-PRIND
2014-08-181408C56-004-PRIND
2015-08-051508347-001-PRIND
2015-08-051508347-003-PRIND
2015-08-051508347-005-PRIND
2015-08-051508347-002-PRIND
2015-08-051508347-004-PRIND
2015-08-061508491-007-PRIND
2015-08-061508491-002-PRIND
2015-08-061508491-004-PRIND
2015-08-061508491-001-PRIND
2015-08-071508632-001-PRIND
2015-08-071508632-002-PRIND
2015-10-281510L96-003-PRIND
2016-07-061607432-001-PRIND
2016-08-171608H35-001-PRIND
2016-08-171608H35-002-PRI0.370 ppb
2016-09-091609665-002-PRIND
2016-09-091609665-001-PRIND
2016-09-121609776-002-PRIND
2016-09-141609B78-003-PRIND
2016-09-141609B78-002-PRIND
2016-09-211609I88-003-PRIND
2016-09-211609I88-001-PRIND
2016-09-231609L06-001-PRIND
2016-09-231609L06-003-PRIND
2017-10-047031903003ND
2017-10-047031903004ND
2017-10-047031902006ND
2017-10-047031903005ND
2017-10-137032857003-PRIND
2017-10-137032857001-PRIND
2017-10-137032857002-PRIND
2017-10-267034156002-PRIND
2017-10-267034156001-PRIND
2017-12-227038915001-PRIND
2018-06-057053755003-PRIND
2018-09-127064528002ND
2018-09-127064528001-PRIND
2018-09-147064896001ND
2018-09-147064896003-PRIND
2018-10-117067661001-PRIND
2018-10-117067661002-PRIND
2018-10-157067953001-PRIND
2018-10-157067953002ND
2018-10-247068920001-PRIND
2018-11-217071820006ND
2019-05-097088902001-PRIND
2019-05-097088902003-PRI0.580 ppb
2019-08-0770100284001-PRIND
2019-08-0770100284003-PRIND
2019-08-0870100531002-PRIND
2019-08-0870100531001-PRIND
2019-08-0870100531004-PRIND
2019-08-0870100531003-PRIND
2019-08-0970100701003-PRIND
2019-08-0970100701001-PRIND
2019-08-0970100701002-PRIND
2019-08-1970101923002-PRIND
2019-08-1970101923001-PRIND
2019-08-2170102243001-PRIND
2019-08-2170102243002-PRIND