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EWG's Tap Water Database — 2019 UPDATE

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Thallium

Philadelphia Water Department

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.

 

63

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND120ND
2014ND120ND
2015ND120ND
2016ND120ND
2017ND120ND

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
2012-10-02DW121002-003ND
2012-10-02DW121002-000ND
2012-10-02DW121002-001ND
2013-01-08DW130108-000ND
2013-01-08DW130108-003ND
2013-01-08DW130108-001ND
2013-04-09DW130409-001ND
2013-04-09DW130409-003ND
2013-04-09DW130409-002ND
2013-07-09DW130709-001ND
2013-07-09DW130709-003ND
2013-07-09DW130709-002ND
2013-10-08DW131008-002ND
2013-10-08DW131008-001ND
2013-10-08DW131008-003ND
2014-01-07DW140107-002ND
2014-01-07DW140107-001ND
2014-01-07DW140107-003ND
2014-04-08DW140408-002ND
2014-04-08DW140408-001ND
2014-04-08DW140408-003ND
2014-07-08DW140708-002ND
2014-07-08DW140708-001ND
2014-07-08DW140708-004ND
2014-10-07DW141007-013ND
2014-10-07DW141007-040ND
2014-10-07DW141007-021ND
2015-01-0612292008ND
2015-01-0612292006ND
2015-01-0612292007ND
2015-04-0712637828ND
2015-04-0712637829ND
2015-04-0712637830ND
2015-07-0713017891ND
2015-07-0713017892ND
2015-07-0713017893ND
2015-10-0613394074ND
2015-10-0613394073ND
2015-10-0613394075ND
2016-01-0513758226ND
2016-01-0513758225ND
2016-01-0513758224ND
2016-04-0514109312ND
2016-04-0514109311ND
2016-04-0514109313ND
2016-07-1214577173ND
2016-07-1214577175ND
2016-07-1214577174ND
2016-10-0415082309ND
2016-10-0415082311ND
2016-10-0415082310ND
2017-01-1015523198ND
2017-01-1015523199ND
2017-01-1015523197ND
2017-04-0415944750ND
2017-04-0415944751ND
2017-04-0415944749ND
2017-07-1116420522ND
2017-07-1116420521ND
2017-07-1116420523ND
2017-10-0316886166ND
2017-10-0316886165ND
2017-10-0316886164ND