Know Your Environment. Protect Your Health.

Selenium

Coast Springs - Cal. Water Service (puc)

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.

 

70

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND130ND
2019ND100ND
2020ND120ND
2021ND100ND
20220.343 ppb143ND - 1.80 ppb
20230.355 ppb112ND - 2.00 ppb

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
2018-02-07CA2110007_001_001-201802071215ND
2018-04-12CA2110007_002_002-201804121145ND
2018-04-12CA2110007_001_001-201804121245ND
2018-06-26CA2110007_001_001-201806261230ND
2018-07-16CA2110007_007_007-201807161155ND
2018-07-16CA2110007_008_008-201807161220ND
2018-07-16CA2110007_006_006-201807161125ND
2018-07-23CA2110007_003_003-201807231150ND
2018-07-23CA2110007_004_004-201807231210ND
2018-07-26CA2110007_005_005-201807261140ND
2018-07-26CA2110007_016_016-201807261155ND
2018-08-06CA2110007_002_002-201808061045ND
2018-08-06CA2110007_010_010-201808061105ND
2019-06-12CA2110007_001_001-201906121245ND
2019-06-17CA2110007_002_002-201906171045ND
2019-06-17CA2110007_003_003-201906171100ND
2019-07-08CA2110007_005_005-201907081340ND
2019-08-01CA2110007_010_010-201908011040ND
2019-08-12CA2110007_016_016-201908121025ND
2019-10-07CA2110007_007_007-201910071000ND
2019-10-07CA2110007_004_004-201910071105ND
2019-10-07CA2110007_008_008-201910071020ND
2019-10-07CA2110007_006_006-201910071035ND
2020-06-15CA2110007_007_007-202006151000ND
2020-06-15CA2110007_005_005-202006151040ND
2020-06-15CA2110007_001_001-202006151120ND
2020-06-15CA2110007_008_008-202006150945ND
2020-06-18CA2110007_016_016-202006181000ND
2020-06-24CA2110007_003_003-202006241140ND
2020-06-24CA2110007_004_004-202006241200ND
2020-06-24CA2110007_002_002-202006241245ND
2020-07-14CA2110007_010_010-202007141050ND
2020-10-05CA2110007_006_006-202010050730ND
2020-10-12CA2110007_001_001-202010121145ND
2020-10-12CA2110007_002_002-202010121150ND
2021-06-14CA2110007_001_001-202106141110ND
2021-06-14CA2110007_002_002-202106141155ND
2021-06-14CA2110007_004_004-202106141210ND
2021-06-14CA2110007_006_006-202106141225ND
2021-06-22CA2110007_008_008-202106221010ND
2021-06-22CA2110007_016_016-202106221100ND
2021-06-22CA2110007_005_005-202106221035ND
2021-07-01CA2110007_007_007-202107011155ND
2021-07-06CA2110007_010_010-202107060900ND
2021-07-06CA2110007_003_003-202107060950ND
2022-04-12CA2110007_001_001-2022041211301.80 ppb
2022-04-26CA2110007_002_002-202204260935ND
2022-06-13CA2110007_001_001-202206131150ND
2022-06-14CA2110007_007_007-202206141050ND
2022-06-14CA2110007_016_016-202206141225ND
2022-06-14CA2110007_005_005-202206141215ND
2022-06-14CA2110007_006_006-202206141010ND
2022-06-14CA2110007_002_002-202206141145ND
2022-06-28CA2110007_008_008-202206281130ND
2022-07-19CA2110007_001_001-2022071909301.80 ppb
2022-07-19CA2110007_003_003-202207191100ND
2022-07-19CA2110007_010_010-202207191210ND
2022-07-19CA2110007_004_004-202207191045ND
2022-10-05CA2110007_001_001-2022100510451.20 ppb
2023-02-14CA2110007_001_001-2023021411302.00 ppb
2023-04-17CA2110007_001_001-2023041710201.90 ppb
2023-06-06CA2110007_001_001-202306061140ND
2023-06-19CA2110007_005_005-202306190930ND
2023-06-19CA2110007_016_016-202306191000ND
2023-06-21CA2110007_007_007-202306210930ND
2023-06-21CA2110007_006_006-202306210900ND
2023-06-22CA2110007_008_008-202306221130ND
2023-06-27CA2110007_004_004-202306270930ND
2023-06-28CA2110007_002_002-202306280945ND
2023-07-18CA2110007_010_010-202307181140ND