Know Your Environment. Protect Your Health.

Selenium

Bethany Special Utility District

NOTE: Bethany Special Utility District purchases water from Johnson County SUD which is required to test for selenium. Sample information shown below was taken by Johnson County SUD.

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND50ND
2020N/A00N/A
2021N/A00N/A
2022ND40ND
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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

NOTE: Bethany Special Utility District purchases water from Johnson County SUD which is required to test for selenium. Sample information shown below was taken by Johnson County SUD.

Date Lab ID Result
2019-02-20Q1907529010ND
2019-02-20Q1907529011ND
2019-02-20Q1907529012ND
2019-02-20Q1907529029ND
2019-02-20Q1907529030ND
2019-02-20Q1907529031ND
2019-02-20Q1907529009ND
2019-05-21Q1927429008ND
2019-05-21Q1927429009ND
2019-05-21Q1927429010ND
2022-05-04Q2213477003ND
2022-06-13Q2216387008ND
2022-06-13Q2216387009ND
2022-06-13Q2216387010ND
2022-10-27Q2232469002ND
2022-10-27Q2232469003ND
2022-10-27Q2232469004ND
2022-10-27Q2232469005ND
2022-10-27Q2232469006ND
2022-10-27Q2232469007ND