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EWG's Tap Water Database — 2021 UPDATE

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Arsenic

Salt Lake City Water System

Arsenic is a potent carcinogen and common contaminant in drinking water. Arsenic causes thousands of cases of cancer each year in the U.S. Click here to read more about arsenic.

MORE ABOUT THIS CONTAMINANT

 

116

Samples

0

Samples exceeding legal limit (MCL)

56

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.750 ppb1411ND - 1.80 ppb
20150.738 ppb1613ND - 1.40 ppb
20160.660 ppb2519ND - 1.50 ppb
2017ND240ND
20180.0656 ppb161ND - 1.05 ppb
20190.505 ppb2112ND - 1.20 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.004 ppb

The EWG Health Guideline of 0.004 ppb for arsenic 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 cancer.

EPA Maximum Contaminant
Level (MCL) 10 ppb

The legal limit for arsenic, established in 2001, was based on costs for arsenic removal, as calculated at the time that the standard was set. This limit does not fully protect against the risk of cancer due to arsenic exposure.

ppb = parts per billion

All test results

Date Result
2014-01-100.700 ppb
2014-05-231.80 ppb
2014-05-300.800 ppb
2014-05-301.30 ppb
2014-06-030.900 ppb
2014-06-111.20 ppb
2014-06-251.30 ppb
2014-06-250.800 ppb
2014-07-01ND
2014-07-010.600 ppb
2014-07-020.500 ppb
2014-07-09ND
2014-07-090.600 ppb
2014-07-09ND
2015-01-23ND
2015-01-230.500 ppb
2015-01-300.900 ppb
2015-01-301.10 ppb
2015-02-271.000 ppb
2015-05-01ND
2015-05-081.10 ppb
2015-05-151.000 ppb
2015-06-191.40 ppb
2015-06-190.800 ppb
2015-06-190.800 ppb
2015-06-191.30 ppb
2015-07-10ND
2015-07-100.800 ppb
2015-07-100.500 ppb
2015-07-170.600 ppb
2016-01-08ND
2016-01-08ND
2016-01-150.900 ppb
2016-02-12ND
2016-02-260.500 ppb
2016-03-25ND
2016-05-191.30 ppb
2016-05-191.20 ppb
2016-06-031.30 ppb
2016-06-030.900 ppb
2016-06-100.600 ppb
2016-06-100.800 ppb
2016-06-100.600 ppb
2016-06-240.500 ppb
2016-06-240.800 ppb
2016-06-240.700 ppb
2016-06-281.50 ppb
2016-06-280.500 ppb
2016-07-080.900 ppb
2016-07-080.900 ppb
2016-07-13ND
2016-07-29ND
2016-07-290.600 ppb
2016-07-290.600 ppb
2016-09-081.40 ppb
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
2018-05-25ND
2018-05-25ND
2018-06-01ND
2018-06-01ND
2018-06-05ND
2018-06-12ND
2018-06-13ND
2018-06-14ND
2018-06-15ND
2018-06-15ND
2018-06-20ND
2018-06-201.05 ppb
2018-06-26ND
2018-06-26ND
2018-06-29ND
2018-07-11ND
2019-01-11ND
2019-01-11ND
2019-02-01ND
2019-04-261.20 ppb
2019-05-03ND
2019-05-310.700 ppb
2019-06-190.500 ppb
2019-06-190.700 ppb
2019-06-210.800 ppb
2019-06-25ND
2019-06-26ND
2019-06-270.900 ppb
2019-07-03ND
2019-07-031.20 ppb
2019-07-23ND
2019-07-230.600 ppb
2019-07-231.10 ppb
2019-07-23ND
2019-08-070.900 ppb
2019-08-160.900 ppb
2019-08-161.10 ppb