Know Your Environment. Protect Your Health.

Thallium

Crestview Mutual Water Company

NOTE: Crestview Mutual Water Company purchases water from Calleguas Municipal Water District which is required to test for thallium. Sample information shown below was taken by Calleguas Municipal Water District.

Thalium is a naturally occurring metal released into the environment from metal smelting and coal burning. Exposure to too much thalium can cause hair loss, liver damage, reduced sperm motility and nervous system impairment.

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND20ND
2020ND80ND
2021ND70ND
2022ND20ND
2023ND60ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for thallium 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 harm to internal organs.

EPA Maximum Contaminant
Level (MCL): 2 ppb

The legal limit for thallium, established in 1992, was based on analytical detection limits at the time that the standard was set.

ppb = parts per billion

All test results

NOTE: Crestview Mutual Water Company purchases water from Calleguas Municipal Water District which is required to test for thallium. Sample information shown below was taken by Calleguas Municipal Water District.

Date Lab ID Result
2018-02-13CA5610050_015_015-201802131050ND
2018-02-13CA5610050_016_016-201802130945ND
2018-02-26CA5610050_004_004-201802260915ND
2018-03-07CA5610050_013_013-201803071320ND
2018-03-08CA5610050_014_014-201803081330ND
2018-03-08CA5610050_012_012-201803081000ND
2018-04-30CA5610050_017_017-201804301030ND
2018-11-05CA5610050_004_004-201811050820ND
2019-01-29CA5610050_004_004-201901290930ND
2019-02-04CA5610050_018_018-201902040945ND
2019-02-05CA5610050_022_022-201902051020ND
2019-02-05CA5610050_023_023-201902050945ND
2019-02-07CA5610050_020_020-201902070840ND
2019-02-11CA5610050_021_021-201902110930ND
2019-02-19CA5610050_019_019-201902191100ND
2019-11-04CA5610050_004_004-201911040800ND
2020-01-03CA5610050_007_007-202001031030ND
2020-01-07CA5610050_008_008-202001071030ND
2020-01-30CA5610050_004_004-202001300930ND
2020-02-03CA5610050_011_011-202002030945ND
2020-02-10CA5610050_006_006-202002101005ND
2020-02-10CA5610050_009_009-202002101145ND
2020-02-12CA5610050_010_010-202002121110ND
2020-11-04CA5610050_004_004-202011040830ND
2021-02-10CA5610050_015_015-202102100830ND
2021-02-11CA5610050_004_004-202102110920ND
2021-02-17CA5610050_017_017-202102171100ND
2021-02-17CA5610050_012_012-202102171000ND
2021-02-19CA5610050_013_013-202102191040ND
2021-02-22CA5610050_016_016-202102221117ND
2021-02-23CA5610050_014_014-202102231000ND
2022-01-03CA5610050_004_004-202201030920ND
2022-01-04CA5610050_019_019-202201040850ND
2022-01-06CA5610050_023_023-202201060920ND
2022-01-13CA5610050_020_020-202201130950ND
2022-01-19CA5610050_022_022-202201191200ND
2022-01-19CA5610050_018_018-202201191115ND
2022-07-27CA5610050_021_021-202207271040ND
2023-03-15CA5610050_004_004-202303150900ND
2023-03-21CA5610050_006_006-202303211000ND
2023-03-21CA5610050_008_008-202303211100ND
2023-03-22CA5610050_009_009-202303221140ND
2023-03-23CA5610050_007_007-202303230830ND
2023-09-21CA5610050_010_010-202309211250ND