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EWG's Tap Water Database — 2019 UPDATE

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Selenium

Salt Lake City Water System

Selenium is an essential element in diets. But too much selenium can decrease thyroid hormone production and cause hair loss, skin lesions and brittle fingernails.

 

111

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20122.43 ppb16161.000 ppb - 4.60 ppb
20131.68 ppb16160.500 ppb - 3.00 ppb
20141.56 ppb14140.900 ppb - 4.10 ppb
20151.17 ppb1615ND - 2.20 ppb
20161.39 ppb25250.600 ppb - 3.30 ppb
2017ND240ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 30 ppb

The EWG Health Guideline of 30 ppb for selenium 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 hair loss and nail damage.

EPA Maximum Contaminant
Level (MCL) 50 ppb

The legal limit for selenium, established in 1991, was based on human epidemiological studies of populations exposed to naturally occurring selenium in drinking water. This limit does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date Result
2012-01-252.10 ppb
2012-01-252.20 ppb
2012-01-261.80 ppb
2012-05-251.20 ppb
2012-06-011.60 ppb
2012-06-011.000 ppb
2012-06-012.10 ppb
2012-06-054.30 ppb
2012-06-054.60 ppb
2012-06-292.20 ppb
2012-06-292.80 ppb
2012-06-293.70 ppb
2012-06-292.70 ppb
2012-07-133.20 ppb
2012-07-171.80 ppb
2012-07-171.50 ppb
2013-01-183.00 ppb
2013-01-250.900 ppb
2013-01-251.70 ppb
2013-05-102.30 ppb
2013-05-151.60 ppb
2013-05-150.900 ppb
2013-05-161.70 ppb
2013-06-182.10 ppb
2013-06-181.20 ppb
2013-06-182.10 ppb
2013-06-250.500 ppb
2013-06-282.00 ppb
2013-06-281.60 ppb
2013-07-302.80 ppb
2013-07-301.20 ppb
2013-08-271.20 ppb
2014-01-101.90 ppb
2014-05-234.10 ppb
2014-05-300.900 ppb
2014-05-301.40 ppb
2014-06-031.40 ppb
2014-06-111.60 ppb
2014-06-251.50 ppb
2014-06-251.40 ppb
2014-07-011.000 ppb
2014-07-011.60 ppb
2014-07-021.60 ppb
2014-07-091.20 ppb
2014-07-091.10 ppb
2014-07-091.10 ppb
2015-01-230.600 ppb
2015-01-23ND
2015-01-302.20 ppb
2015-01-302.00 ppb
2015-02-271.90 ppb
2015-05-010.800 ppb
2015-05-080.900 ppb
2015-05-151.000 ppb
2015-06-190.800 ppb
2015-06-191.40 ppb
2015-06-191.000 ppb
2015-06-191.50 ppb
2015-07-101.10 ppb
2015-07-100.700 ppb
2015-07-101.000 ppb
2015-07-171.80 ppb
2016-01-080.600 ppb
2016-01-080.800 ppb
2016-01-151.50 ppb
2016-02-120.800 ppb
2016-02-261.60 ppb
2016-03-251.000 ppb
2016-05-190.600 ppb
2016-05-191.10 ppb
2016-06-031.90 ppb
2016-06-032.00 ppb
2016-06-102.20 ppb
2016-06-101.30 ppb
2016-06-102.20 ppb
2016-06-241.70 ppb
2016-06-241.000 ppb
2016-06-241.90 ppb
2016-06-283.30 ppb
2016-06-281.60 ppb
2016-07-080.700 ppb
2016-07-081.20 ppb
2016-07-131.000 ppb
2016-07-291.20 ppb
2016-07-291.40 ppb
2016-07-291.40 ppb
2016-09-080.700 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