Know Your Environment. Protect Your Health.

Thallium

Joshua Basin 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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND20ND
2020ND40ND
2021N/A00N/A
2022N/A00N/A
2023ND40ND

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

Date Lab ID Result
2018-05-10CA3610025_008_008-201805100600ND
2018-11-05CA3610025_005_005-201811050500ND
2018-11-05CA3610025_009_009-201811050530ND
2019-02-11CA3610025_010_010-201902110730ND
2019-02-11CA3610025_011_011-201902110815ND
2020-11-17CA3610025_009_009-202011170800ND
2020-11-17CA3610025_005_005-202011170730ND
2020-11-17CA3610025_010_010-202011171000ND
2020-11-17CA3610025_011_011-202011170930ND
2023-11-07CA3610025_005_005-202311070631ND
2023-11-07CA3610025_009_009-202311070828ND
2023-11-07CA3610025_010_010-202311070710ND
2023-11-07CA3610025_011_011-202311070928ND