Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Thallium

Monterey Park 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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND50ND
2014ND10ND
2015ND20ND
2016ND40ND
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
2012-08-149588-038-0935ND
2012-10-313761-006-1345ND
2012-11-059588-006-0940ND
2012-11-083761-038-0810ND
2013-02-059588-013-1020ND
2013-02-059588-010-1035ND
2013-03-283761-013-0915ND
2013-08-209588-001-0920ND
2013-11-199588-011-1120ND
2014-08-219588-002-0945ND
2015-08-259588-038-1035ND
2015-11-109588-006-1100ND
2016-02-189588-013-1045ND
2016-02-189588-010-1030ND
2016-08-119588-001-0905ND
2016-08-119588-011-0930ND
2017-08-159588-002-0915ND