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EWG's Tap Water Database — 2019 UPDATE

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Mercury (inorganic)

Salt Lake City Water System

Mercury is a potent neurotoxin that also damages the kidneys and other internal organs. Mercury enters drinking water from industrial pollution, mining wastes and coal-fired power plants.

 

110

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND150ND
2013ND160ND
20140.0143 ppb141ND - 0.200 ppb
2015ND160ND
2016ND250ND
2017ND240ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1.2 ppb

The EWG Health Guideline of 1.2 ppb for mercury (inorganic) 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 inorganic mercury, established in 1991, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s. This limit does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date Result
2012-01-25ND
2012-01-25ND
2012-01-26ND
2012-05-25ND
2012-06-01ND
2012-06-01ND
2012-06-01ND
2012-06-05ND
2012-06-05ND
2012-06-29ND
2012-06-29ND
2012-06-29ND
2012-07-13ND
2012-07-17ND
2012-07-17ND
2013-01-18ND
2013-01-25ND
2013-01-25ND
2013-05-10ND
2013-05-15ND
2013-05-15ND
2013-05-16ND
2013-06-18ND
2013-06-18ND
2013-06-18ND
2013-06-25ND
2013-06-28ND
2013-06-28ND
2013-07-30ND
2013-07-30ND
2013-08-27ND
2014-01-10ND
2014-05-23ND
2014-05-30ND
2014-05-30ND
2014-06-03ND
2014-06-11ND
2014-06-250.200 ppb
2014-06-25ND
2014-07-01ND
2014-07-01ND
2014-07-02ND
2014-07-09ND
2014-07-09ND
2014-07-09ND
2015-01-23ND
2015-01-23ND
2015-01-30ND
2015-01-30ND
2015-02-27ND
2015-05-01ND
2015-05-08ND
2015-05-15ND
2015-06-19ND
2015-06-19ND
2015-06-19ND
2015-06-19ND
2015-07-10ND
2015-07-10ND
2015-07-10ND
2015-07-17ND
2016-01-08ND
2016-01-08ND
2016-01-15ND
2016-02-12ND
2016-02-26ND
2016-03-25ND
2016-05-19ND
2016-05-19ND
2016-06-03ND
2016-06-03ND
2016-06-10ND
2016-06-10ND
2016-06-10ND
2016-06-24ND
2016-06-24ND
2016-06-24ND
2016-06-28ND
2016-06-28ND
2016-07-08ND
2016-07-08ND
2016-07-13ND
2016-07-29ND
2016-07-29ND
2016-07-29ND
2016-09-08ND
2017-01-13ND
2017-01-13ND
2017-01-20ND
2017-01-20ND
2017-03-03ND
2017-03-24ND
2017-06-09ND
2017-06-09ND
2017-06-16ND
2017-06-16ND
2017-06-16ND
2017-06-20ND
2017-06-23ND
2017-06-30ND
2017-06-30ND
2017-07-14ND
2017-07-14ND
2017-07-21ND
2017-07-21ND
2017-08-03ND
2017-08-08ND
2017-08-08ND
2017-08-22ND
2017-08-23ND