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EWG's Tap Water Database — 2019 UPDATE

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Selenium

City of Gulfport

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.

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013N/A00N/A
2014ND110ND
2015ND170ND
2016N/A00N/A
2017ND50ND

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
2012-04-04120405-019INND
2012-11-26121127-004INND
2012-11-26121127-003INND
2012-11-26121127-002INND
2014-04-09140410-006INND
2014-04-09140410-007INND
2014-04-09140410-008INND
2014-04-09140410-009INND
2014-04-09140410-010INND
2014-04-09140410-018INND
2014-04-09140410-019INND
2014-04-09140410-020INND
2014-04-09140410-021INND
2014-04-09140410-022INND
2014-04-09140410-023INND
2015-03-04150305-025INND
2015-03-04150305-020INND
2015-03-04150305-019INND
2015-03-04150305-018INND
2015-03-04150305-017INND
2015-03-04150305-001INND
2015-03-04150305-002INND
2015-03-04150305-003INND
2015-03-04150305-004INND
2015-03-04150305-005INND
2015-03-04150305-006INND
2015-03-04150305-007INND
2015-03-04150305-016INND
2015-03-04150305-015INND
2015-03-04150305-010INND
2015-03-04150305-009INND
2015-03-04150305-008INND
2017-05-10170511-004INND
2017-05-10170511-003INND
2017-05-10170511-002INND
2017-05-10170511-001INND
2017-05-22170523-004INND