Know Your Environment. Protect Your Health.

Thallium

City of Miles

NOTE: City of Miles purchases water from City of San Angelo which is required to test for thallium. Sample information shown below was taken by City of San Angelo.

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND10ND
2021ND10ND
2022ND10ND
2023ND10ND

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: City of Miles purchases water from City of San Angelo which is required to test for thallium. Sample information shown below was taken by City of San Angelo.

Date Lab ID Result
2018-02-28Q1808687009ND
2019-05-07Q1920785005ND
2020-02-18Q2006105004ND
2021-04-27Q2110656004ND
2022-02-14Q2205298002ND
2023-02-15Q2306325002ND