Know Your Environment. Protect Your Health.

Selenium

Town of Annetta Deer Creek

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
2018ND30ND
2019ND30ND
2020ND20ND
2021ND30ND
2022ND30ND
2023ND20ND

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

Date Lab ID Result
2018-08-06Q1830996003ND
2018-08-06Q1830996013ND
2018-12-03Q1849051003ND
2019-06-03Q1930677025ND
2019-06-03Q1930677026ND
2019-06-03Q1930677027ND
2020-04-21Q2015803026ND
2020-08-27Q2034434013ND
2021-02-01Q2102857016ND
2021-02-01Q2102857017ND
2021-05-24Q2113349005ND
2022-02-07Q2204015002ND
2022-03-10Q2208362002ND
2022-11-17Q2234711002ND
2023-11-08Q2348107024ND
2023-11-08Q2348107025ND