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EWG's Tap Water Database — 2021 UPDATE

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Selenium

Savannah - Main

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.

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND220ND
2015N/A00N/A
2016N/A00N/A
2017ND220ND
2018N/A00N/A
2019N/A00N/A

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
2014-04-23AI38708ND
2014-04-23AI38707ND
2014-04-23AI38706ND
2014-04-23AI38705ND
2014-04-23AI38704ND
2014-04-23AI38703ND
2014-04-23AI38702ND
2014-04-23AI38701ND
2014-04-23AI38700ND
2014-04-23AI38699ND
2014-05-01AI39365ND
2014-05-01AI39364ND
2014-05-06AI39866ND
2014-05-06AI39875ND
2014-05-06AI39874ND
2014-05-06AI39873ND
2014-05-06AI39872ND
2014-05-06AI39871ND
2014-05-06AI39870ND
2014-05-06AI39869ND
2014-05-06AI39868ND
2014-05-06AI39867ND
2017-06-01AJ56454ND
2017-06-01AJ56453ND
2017-06-01AJ56452ND
2017-06-01AJ56451ND
2017-06-01AJ56450ND
2017-06-08AJ57201ND
2017-06-08AJ57202ND
2017-06-08AJ57203ND
2017-06-08AJ57204ND
2017-06-08AJ57205ND
2017-06-08AJ57206ND
2017-06-13AJ57555ND
2017-06-13AJ57551ND
2017-06-13AJ57550ND
2017-06-13AJ57549ND
2017-06-13AJ57544ND
2017-06-20AJ58129ND
2017-06-20AJ58128ND
2017-07-06AJ59417ND
2017-07-06AJ59416ND
2017-08-03AJ62816ND
2017-08-07AJ63152ND