Know Your Environment. Protect Your Health.

Thallium

Denair Community Services 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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2018-03-12CA5010021_008_008-201803121143ND
2018-03-13CA5010021_007_007-201803130728ND
2018-06-05CA5010021_009_009-201806051037ND
2018-08-15CA5010021_010_010-201808150905ND
2020-03-03CA5010021_008_008-202003030901ND
2020-05-13CA5010021_007_007-202005131316ND
2021-06-22CA5010021_009_009-202106221205ND
2021-08-18CA5010021_010_010-20210818NULND
2023-03-15CA5010021_008_008-202303150908ND
2023-05-11CA5010021_007_007-202305110925ND