Know Your Environment. Protect Your Health.

Selenium

Jones County 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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND50ND
2021ND10ND
2022ND10ND
2023ND60ND

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
2018-03-018754-030118-E04IND
2019-09-268754-092619-E04IND
2020-07-138754-071320-E02IND
2020-07-138754-071320-E07IND
2020-07-138754-071320-E1AIND
2020-07-138754-071320-E1BIND
2020-07-138754-071320-E8BIND
2021-03-248754-032421-E04IND
2022-12-068754-120622-EP1IND
2023-06-138754-061323-E02IND
2023-06-138754-061323-E07IND
2023-06-138754-061323-E1AIND
2023-06-138754-061323-E1BIND
2023-06-138754-061323-E8BIND
2023-06-138754-061323-EP1IND