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EWG's Tap Water Database — 2019 UPDATE

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Selenium

Atlantic City Municipal Utilities 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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.26 ppb330.981 ppb - 1.70 ppb
20130.710 ppb220.660 ppb - 0.760 ppb
20140.440 ppb330.300 ppb - 0.570 ppb
20150.380 ppb220.220 ppb - 0.540 ppb
20160.570 ppb110.570 ppb
2017ND10ND

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
2012-01-12L4031972-21.10 ppb
2012-04-26L4137881-10.981 ppb
2012-10-11L4355327-21.70 ppb
2013-01-10L4456223-20.660 ppb
2013-01-16L4462640-10.760 ppb
2014-01-16L4901499-30.300 ppb
2014-03-25L4988369-20.570 ppb
2014-07-15L5162972-20.450 ppb
2015-01-14L5409386-10.540 ppb
2015-07-09L5700688-30.220 ppb
2016-01-06L5966600-70.570 ppb
2017-02-22L6687631-3ND