Know Your Environment. Protect Your Health.

Selenium

Meridian Water Department

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.

 

65

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND220ND
2019ND20ND
2020ND220ND
2021ND30ND
2022ND30ND
2023ND130ND

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
2018-03-26I2018003270667ND
2018-03-26I2018003270688ND
2018-03-26I2018003270670ND
2018-03-26I201803270687ND
2018-03-26I2018003270671ND
2018-03-26I2018003270680ND
2018-03-26I2018003270686ND
2018-03-26I2018003270668ND
2018-03-26I2018003270682ND
2018-03-26I2018003270673ND
2018-03-26I2018003270666ND
2018-03-26I2018003270669ND
2018-03-26I2018003270665ND
2018-03-26I2018003270675ND
2018-03-26I2018003270683ND
2018-03-26I2018003270684ND
2018-03-26I2018003270674ND
2018-03-26I2018003270681ND
2018-03-26I2018003270672ND
2018-03-26I2018003270689ND
2018-04-10I201804120311ND
2018-06-12I201806131144ND
2019-04-09201904100102ND
2019-12-10201912110680ND
2020-03-10202003110253ND
2020-03-10202003110242ND
2020-03-17202003180487ND
2020-03-17202003180445ND
2020-03-17202003180341ND
2020-03-18202003190169ND
2020-04-07202004080558ND
2020-04-07202004080530ND
2020-04-14202004160513ND
2020-04-14202004150455ND
2020-08-05202008060243ND
2020-08-06202008070395ND
2020-08-06202008070424ND
2020-08-06202008070429ND
2020-08-13202008140195ND
2020-08-24202008260647ND
2020-08-26202008280065ND
2020-11-23202011240342ND
2020-11-23202011240344ND
2020-11-24202011250284ND
2020-11-24202011250275ND
2020-12-02202012030482ND
2021-01-20202101210294ND
2021-07-21202107220276ND
2021-11-16202111170684ND
2022-02-22202202231261ND
2022-03-01202203020994ND
2022-11-16380-28732-1ND
2023-08-01380-57235-1ND
2023-08-02380-57464-1ND
2023-08-07380-57977-1ND
2023-08-07380-57974-1ND
2023-08-07380-57897-1ND
2023-08-07380-57894-1ND
2023-08-07380-57899-1ND
2023-08-09380-58355-1ND
2023-08-09380-58481-1ND
2023-08-09380-58496-1ND
2023-08-10380-58742-1ND
2023-09-26380-64488-1ND
2023-09-26380-64427-1ND