Know Your Environment. Protect Your Health.

Selenium

Bethel, Town of

NOTE: Bethel, Town of purchases water from Greenville Utilities Comm. which is required to test for selenium. Sample information shown below was taken by Greenville Utilities Comm..

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND20ND
2020ND40ND
2021ND10ND
2022ND10ND
2023ND40ND

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: Bethel, Town of purchases water from Greenville Utilities Comm. which is required to test for selenium. Sample information shown below was taken by Greenville Utilities Comm..

Date Lab ID Result
2018-10-1837729_18-43623ND
2018-10-1837729_18-43626ND
2018-10-1837729_18-43627ND
2018-10-1837729_18-43628ND
2018-10-1837729_18-43620ND
2019-10-2437729_19-46053ND
2019-10-2437729_19-46054ND
2019-10-2437729_19-46055ND
2019-10-2437729_19-46056ND
2020-10-2237729_20-46179ND
2020-10-2237729_20-46178ND
2020-10-2237729_20-46177ND
2020-10-2237729_20-46176ND
2021-10-0737729_21-44632ND
2021-10-0737729_21-44635ND
2021-10-0737729_21-44636ND
2021-10-0737729_21-44702ND
2022-10-1837729_22-51093ND
2022-10-1837729_22-51094ND
2022-10-1837729_22-51095ND
2022-10-1837729_22-51096ND
2023-10-2737729_23-60772ND
2023-10-2737729_23-60773ND
2023-10-2737729_23-60774ND
2023-10-2737729_23-60775ND