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EWG's Tap Water Database — 2021 UPDATE

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Thallium

SJWTX Triple Peak Plant

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.

 

31

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
2015ND40ND
2016ND80ND
2017ND60ND
2018ND40ND
2019ND70ND

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
2014-03-31AC48683ND
2014-06-24AC57769ND
2015-01-16AC76741ND
2015-06-03AC94348ND
2015-06-03AC94344ND
2015-11-03AD12300ND
2016-01-26AD19990ND
2016-01-26AD19996ND
2016-01-26AD19991ND
2016-01-26AD19989ND
2016-03-18AD29543ND
2016-03-18AD29527ND
2016-03-18AD29542ND
2016-12-01AD59772ND
2017-02-01AD68016ND
2017-02-01AD68015ND
2017-05-03AD82651ND
2017-05-31AD86074ND
2017-05-31AD86073ND
2017-05-31AD86075ND
2018-02-06AE12409ND
2018-04-23AE23410ND
2018-06-20AE30653ND
2018-09-11AE39521ND
2019-02-12AE54201ND
2019-02-12AE54202ND
2019-05-22AE67565ND
2019-05-22AE67566ND
2019-06-18AE71008ND
2019-09-19AE84030ND
2019-10-15AE86727ND