Know Your Environment. Protect Your Health.

Selenium

Minden Water System

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.

 

45

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND260ND
2019N/A00N/A
2020N/A00N/A
2021ND90ND
2022ND100ND
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

Date Lab ID Result
2018-04-0635385008004ND
2018-04-0635385008003ND
2018-04-0635385008002ND
2018-04-0635385008001ND
2018-04-0635385008001ND
2018-04-0635385008002ND
2018-04-0635385008003ND
2018-04-0635385008004ND
2018-06-2535400742002ND
2018-06-2535400742009ND
2018-06-2535400742008ND
2018-06-2535400742007ND
2018-06-2535400742006ND
2018-06-2535400742005ND
2018-06-2535400742004ND
2018-06-2535400742002ND
2018-06-2535400742001ND
2018-06-2535400742009ND
2018-06-2535400742008ND
2018-06-2535400742007ND
2018-06-2535400742006ND
2018-06-2535400742005ND
2018-06-2535400742004ND
2018-06-2535400742003ND
2018-06-2535400742001ND
2018-06-2535400742003ND
2021-04-13B2101674-005ND
2021-04-13B2101674-009ND
2021-04-13B2101674-008ND
2021-04-13B2101674-007ND
2021-04-13B2101674-006ND
2021-04-13B2101674-004ND
2021-04-13B2101674-003ND
2021-04-13B2101674-002ND
2021-04-13B2101674-001ND
2022-09-14B2204449-001ND
2022-09-14B2204449-002ND
2022-09-14B2204449-003ND
2022-09-14B2204449-004ND
2022-09-14B2204449-005ND
2022-09-14B2204449-006ND
2022-09-14B2204449-007ND
2022-09-14B2204449-008ND
2022-09-14B2204449-009ND
2022-09-14B2204449-010ND