Know Your Environment. Protect Your Health.

Selenium

Tangipahoa Parish Water District

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.

 

43

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND220ND
2019N/A00N/A
2020ND70ND
2021ND50ND
2022N/A00N/A
2023ND90ND

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
2018-01-31AE20519ND
2018-01-31AE20516ND
2018-01-31AE20513ND
2018-01-31AE20510ND
2018-01-31AE20510ND
2018-01-31AE20513ND
2018-01-31AE20516ND
2018-01-31AE20519ND
2018-05-07AE21712ND
2018-05-07AE21715ND
2018-05-07AE21715ND
2018-05-07AE21712ND
2018-12-03B1805766-002ND
2018-12-03B1805766-005ND
2018-12-03B1805766-003ND
2018-12-03B1805766-002ND
2018-12-03B1805766-001ND
2018-12-03B1805766-005ND
2018-12-03B1805766-004ND
2018-12-03B1805766-003ND
2018-12-03B1805766-001ND
2018-12-03B1805766-004ND
2020-03-02B2001157-001ND
2020-11-16B2006150-003ND
2020-11-16B2006150-004ND
2020-11-16B2006150-005ND
2020-11-16B2006150-006ND
2020-11-16B2006150-001ND
2020-11-16B2006150-002ND
2021-11-01B2105891-005ND
2021-11-01B2105891-004ND
2021-11-01B2105891-003ND
2021-11-01B2105891-002ND
2021-11-01B2105891-001ND
2023-03-28B2301423-001ND
2023-09-18B2303887-003ND
2023-10-25B2304622-001ND
2023-10-25B2304622-002ND
2023-11-06B2304860-001ND
2023-11-06B2304860-002ND
2023-11-06B2304860-003ND
2023-11-06B2304860-004ND
2023-11-06B2304860-005ND