Know Your Environment. Protect Your Health.

Selenium

California Water Service Company-Lancaster

NOTE: California Water Service Company-Lancaster purchases water from Antelope Valley - East Kern Water Agency which is required to test for selenium. Sample information shown below was taken by Antelope Valley - East Kern Water Agency.

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.

 

63

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.82 ppb205ND - 9.70 ppb
2019ND10ND
2020ND20ND
2021ND150ND
2022ND10ND
2023ND10ND

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

NOTE: California Water Service Company-Lancaster purchases water from Antelope Valley - East Kern Water Agency which is required to test for selenium. Sample information shown below was taken by Antelope Valley - East Kern Water Agency.

Date Lab ID Result
2018-02-28CA1910045_019_019-2018022809286.00 ppb
2018-03-14CA1910045_014_014-201803140905ND
2018-03-21CA1910045_023_023-201803210830ND
2018-03-28CA1910045_013_013-2018032808505.50 ppb
2018-04-11CA1910045_010_010-201804110814ND
2018-04-11CA1910045_007_007-2018041107509.70 ppb
2018-04-11CA1910045_009_009-201804110855ND
2018-05-09CA1910045_015_015-2018050910327.00 ppb
2018-05-09CA1910045_012_012-2018050909548.20 ppb
2018-05-23CA1910045_019_019-201805230947ND
2018-06-20CA1910045_024_024-201806200811ND
2018-06-20CA1910045_023_023-201806201023ND
2018-08-08CA1910045_019_019-201808081055ND
2018-08-08CA1910045_011_011-201808080715ND
2018-11-06CA1910045_006_006-201811060730ND
2018-11-06CA1910045_005_005-201811061110ND
2018-11-06CA1910045_003_003-201811061110ND
2018-11-06CA1910045_002_002-201811061110ND
2018-11-06CA1910045_001_001-201811061110ND
2018-11-06CA1910045_004_004-201811061105ND
2019-11-13CA1910045_001_001-201911130853ND
2019-11-13CA1910045_006_006-201911130833ND
2019-11-13CA1910045_004_004-201911131202ND
2019-11-13CA1910045_002_002-201911130900ND
2019-11-13CA1910045_003_003-201911130900ND
2019-11-13CA1910045_005_005-201911130900ND
2020-02-12CA1910045_017_017-202002121200ND
2020-02-12CA1910045_021_021-202002121035ND
2020-02-12CA1910045_022_022-202002120805ND
2020-02-20CA1910045_018_018-202002201000ND
2020-03-11CA1910045_020_020-202003110930ND
2020-11-09CA1910045_001_001-202011091250ND
2020-11-09CA1910045_002_002-202011091220ND
2020-11-09CA1910045_004_004-202011091240ND
2020-11-09CA1910045_005_005-202011091220ND
2020-11-09CA1910045_006_006-202011090929ND
2020-11-09CA1910045_003_003-202011091220ND
2021-03-10CA1910045_014_014-202103101105ND
2021-03-10CA1910045_013_013-202103101030ND
2021-04-14CA1910045_008_008-202104141115ND
2021-04-14CA1910045_010_010-202104141225ND
2021-04-14CA1910045_007_007-202104140955ND
2021-04-14CA1910045_009_009-202104141200ND
2021-05-12CA1910045_012_012-202105121015ND
2021-05-12CA1910045_015_015-202105121045ND
2021-06-09CA1910045_024_024-202106091205ND
2021-08-11CA1910045_011_011-202108110833ND
2021-08-11CA1910045_019_019-202108110655ND
2021-11-10CA1910045_001_001-202111100845ND
2021-11-10CA1910045_002_002-202111100900ND
2021-11-10CA1910045_004_004-202111101107ND
2021-11-10CA1910045_006_006-202111100750ND
2023-02-08CA1910045_017_017-202302080920ND
2023-02-08CA1910045_018_018-202302081038ND
2023-02-08CA1910045_021_021-202302080742ND
2023-02-08CA1910045_022_022-202302080842ND
2023-03-08CA1910045_020_020-202303080900ND
2023-11-08CA1910045_003_003-202311081130ND
2023-11-08CA1910045_002_002-202311081130ND
2023-11-08CA1910045_004_004-202311081055ND
2023-11-08CA1910045_006_006-202311080723ND
2023-11-08CA1910045_001_001-202311081140ND
2023-11-08CA1910045_005_005-202311081130ND