Know Your Environment. Protect Your Health.

Selenium

City of Alexandria 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.

 

148

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND900ND
2020ND60ND
2021ND40ND
2022ND370ND
2023ND110ND

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
2019-01-3035445470001ND
2019-01-3035445470002ND
2019-01-3035445470003ND
2019-01-3035445470004ND
2019-01-3035445470005ND
2019-01-3035445470001ND
2019-01-3035445470002ND
2019-01-3035445470003ND
2019-01-3035445470004ND
2019-01-3035445470005ND
2019-02-0635446987001ND
2019-02-0635446987002ND
2019-02-0635446987003ND
2019-02-0635446987004ND
2019-02-0635446987005ND
2019-02-0635446987001ND
2019-02-0635446987002ND
2019-02-0635446987003ND
2019-02-0635446987004ND
2019-02-0635446987005ND
2019-02-2735451250001ND
2019-02-2735451250002ND
2019-02-2735451250003ND
2019-02-2735451250004ND
2019-02-2735451250005ND
2019-02-2735451250001ND
2019-02-2735451250002ND
2019-02-2735451250003ND
2019-02-2735451250004ND
2019-02-2735451250005ND
2019-03-1335454676001ND
2019-03-1335454676002ND
2019-03-1335454676003ND
2019-03-1335454676004ND
2019-03-1335454676001ND
2019-03-1335454676002ND
2019-03-1335454676003ND
2019-03-1335454676004ND
2019-03-2035456260001ND
2019-03-2035456260002ND
2019-03-2035456260003ND
2019-03-2035456260004ND
2019-03-2035456260005ND
2019-03-2035456260001ND
2019-03-2035456260002ND
2019-03-2035456260003ND
2019-03-2035456260004ND
2019-03-2035456260005ND
2019-03-2735457693001ND
2019-03-2735457693002ND
2019-03-2735457693003ND
2019-03-2735457693004ND
2019-03-2735457693005ND
2019-03-2735457693001ND
2019-03-2735457693002ND
2019-03-2735457693003ND
2019-03-2735457693004ND
2019-03-2735457693005ND
2019-04-1035461050001ND
2019-04-1035461050002ND
2019-04-1035461050004ND
2019-04-1035461050005ND
2019-04-1035461050001ND
2019-04-1035461050002ND
2019-04-1035461050004ND
2019-04-1035461050005ND
2019-06-06B1902352-001ND
2019-06-06B1902352-003ND
2019-06-06B1902352-001ND
2019-06-06B1902352-003ND
2019-07-25B1903186-001ND
2019-07-25B1903188-001ND
2019-07-25B1903186-001ND
2019-07-25B1903188-001ND
2019-09-11B1904050-001ND
2019-09-11B1904050-002ND
2019-09-11B1904050-003ND
2019-09-11B1904050-001ND
2019-09-11B1904050-002ND
2019-09-11B1904050-003ND
2019-12-04B1905453-001ND
2019-12-04B1905453-002ND
2019-12-04B1905453-003ND
2019-12-04B1905453-004ND
2019-12-04B1905453-005ND
2019-12-04B1905453-001ND
2019-12-04B1905453-002ND
2019-12-04B1905453-003ND
2019-12-04B1905453-004ND
2019-12-04B1905453-005ND
2020-03-26B2001556-001ND
2020-03-26B2001556-002ND
2020-06-17B2002902-001ND
2020-06-17B2002902-002ND
2020-10-01B2005181-001ND
2020-11-09B2005987-001ND
2021-01-26B2100376-001ND
2021-05-05B2102139-001ND
2021-07-14B2103238-001ND
2021-08-10B2103808-001ND
2022-01-04B2200014-001ND
2022-01-04B2200014-002ND
2022-01-04B2200014-003ND
2022-01-19B2200275-001ND
2022-01-19B2200275-002ND
2022-01-19B2200275-003ND
2022-01-19B2200275-004ND
2022-01-19B2200275-005ND
2022-02-02B2200523-001ND
2022-02-02B2200523-002ND
2022-02-02B2200523-003ND
2022-02-02B2200523-004ND
2022-02-02B2200523-005ND
2022-02-23B2200866-001ND
2022-02-23B2200866-002ND
2022-02-23B2200866-003ND
2022-02-23B2200866-004ND
2022-02-23B2200866-005ND
2022-03-09B2201054-001ND
2022-03-09B2201054-002ND
2022-03-09B2201054-003ND
2022-03-09B2201054-004ND
2022-03-16B2201185-001ND
2022-03-16B2201185-002ND
2022-03-16B2201185-003ND
2022-03-16B2201185-004ND
2022-03-16B2201185-005ND
2022-07-18B2203404-001ND
2022-07-18B2203404-002ND
2022-07-18B2203404-003ND
2022-07-18B2203404-004ND
2022-07-18B2203404-005ND
2022-07-18B2203404-006ND
2022-09-13B2204412-001ND
2022-09-13B2204412-002ND
2022-11-30B2205669-001ND
2022-11-30B2205669-002ND
2023-02-06B2300579-001ND
2023-02-06B2300579-002ND
2023-05-30B2302282-001ND
2023-05-30B2302282-002ND
2023-05-30B2302282-003ND
2023-07-31B2303129-001ND
2023-07-31B2303129-002ND
2023-07-31B2303129-003ND
2023-11-27B2305075-001ND
2023-11-27B2305075-002ND
2023-11-27B2305075-003ND