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EWG's Tap Water Database — 2019 UPDATE

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Selenium

Municipality of Anchorage

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.

 

60

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.565 ppb119ND - 1.14 ppb
2013ND120ND
20141.15 ppb220.579 ppb - 1.73 ppb
2015ND130ND
2016ND110ND
2017ND110ND

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 Lab ID Result
2012-07-19CG*A1207321-01D0.550 ppb
2012-11-28CG*A1211347-01DND
2012-11-28CG*A1211347-02D0.705 ppb
2012-11-28CG*A1211347-03D1.14 ppb
2012-11-28CG*A1211347-04D0.530 ppb
2012-11-28CG*A1211347-05D0.517 ppb
2012-11-28CG*A1211347-06D0.742 ppb
2012-11-28CG*A1211347-07D0.713 ppb
2012-11-28CG*A1211347-08D0.551 ppb
2012-11-28CG*A1211347-09D0.769 ppb
2012-11-28CG*A1211347-10DND
2013-04-04CG*A1304163-01CND
2013-09-24CG*A1309437-01BND
2013-10-25CG*A1310536-04BND
2013-10-25CG*A1310536-05BND
2013-10-25CG*A1310536-03BND
2013-10-25CG*A1310536-02BND
2013-10-25CG*A1310536-01BND
2013-10-31CG*A1310614-01BND
2013-10-31CG*A1310614-02BND
2013-10-31CG*A1310614-03BND
2013-10-31CG*A1310614-04BND
2013-11-08CG*A1311145-01BND
2014-05-13CG*A1405164-01D1.73 ppb
2014-09-09CG*A1409133-01B0.579 ppb
2015-01-12CG*A1501154-01DND
2015-08-18CG*3306214ND
2015-08-18CG*3306215ND
2015-08-18CG*3306216ND
2015-08-18CG*3306217ND
2015-08-18CG*3306156ND
2015-08-19CG*3308380ND
2015-08-20CG*3308717ND
2015-08-20CG*3308719ND
2015-08-20CG*3308713ND
2015-08-20CG*3308715ND
2015-09-23CG*3329851ND
2015-10-30CG*3352000ND
2016-07-13CG*280-85692-1ND
2016-07-13CG*280-85692-2ND
2016-07-13CG*280-85692-4ND
2016-07-18CG*280-85921-1ND
2016-07-18CG*280-85921-2ND
2016-07-19CG*280-85945-1ND
2016-08-02CG*280-86589-1ND
2016-08-02CG*280-86590-1ND
2016-08-29CG*3537234ND
2016-08-29CG*3537235ND
2016-11-08CG*3584825ND
2017-08-21CG*3765074ND
2017-08-21CG*3765103ND
2017-08-21CG*3766063ND
2017-08-21CG*3766069ND
2017-08-28CG*3768872ND
2017-08-28CG*3768880ND
2017-08-28CG*3768896ND
2017-08-28CG*3768904ND
2017-08-29CG*3769505ND
2017-10-02CG*3792411ND
2017-10-31CG*440-195632-1ND