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EWG's Tap Water Database — 2019 UPDATE

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Selenium

Warminster Municipal Authority

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND170ND
2013N/A00N/A
2014N/A00N/A
2015ND130ND
2016N/A00N/A
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
2012-02-229953679001ND
2012-02-229953679017ND
2012-02-229953679016ND
2012-02-229953679006ND
2012-02-229953679015ND
2012-02-229953679014ND
2012-02-229953679013ND
2012-02-229953679012ND
2012-02-229953679011ND
2012-02-229953679010ND
2012-02-229953679002ND
2012-02-229953679003ND
2012-02-229953679004ND
2012-02-229953679005ND
2012-02-229953679007ND
2012-02-229953679008ND
2012-02-229953679009ND
2015-04-0612620014ND
2015-04-0612619942ND
2015-04-0612620002ND
2015-04-0612619990ND
2015-04-0612619978ND
2015-04-0612619966ND
2015-04-0612619954ND
2015-04-0612619930ND
2015-04-0612619918ND
2015-04-0612619906ND
2015-04-0612619894ND
2015-04-0612619882ND
2015-04-0612620026ND