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EWG's Tap Water Database — 2021 UPDATE

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Selenium

Fort Rucker - American Water

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016ND70ND
2017N/A00N/A
2018N/A00N/A
2019ND70ND

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
2016-01-21160121039-4ND
2016-01-21160121039-1ND
2016-01-21160121039-2ND
2016-01-21160121039-5ND
2016-01-21160121039-7ND
2016-01-21160121039-3ND
2016-01-21160121039-6ND
2019-05-2820105777005_IIOCND
2019-05-2820105777001_IIOCND
2019-05-2820105777007_IIOCND
2019-05-2820105777004_IIOCND
2019-05-2820105777003_IIOCND
2019-05-2820105777002_IIOCND
2019-05-2820105777006_IIOCND