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EWG's Tap Water Database — 2019 UPDATE

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Selenium

Tifton-Tift County 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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND80ND
2014N/A00N/A
2015N/A00N/A
2016ND80ND
2017N/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
2013-12-03AI24126ND
2013-12-03AI24125ND
2013-12-03AI24124ND
2013-12-03AI24123ND
2013-12-03AI24122ND
2013-12-03AI24121ND
2013-12-03AI24117ND
2013-12-16AI25117ND
2016-07-05AJ16604ND
2016-07-05AJ16603ND
2016-07-05AJ16602ND
2016-07-05AJ16601ND
2016-07-05AJ16600ND
2016-07-05AJ16599ND
2016-07-05AJ16598ND
2016-09-07AJ26178ND