Know Your Environment. Protect Your Health.

Thallium

City of Richland Hills

NOTE: City of Richland Hills purchases water from City of Fort Worth which is required to test for thallium. Sample information shown below was taken by City of Fort Worth.

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND20ND
2020ND50ND
2021ND50ND
2022ND20ND
2023ND50ND

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 Richland Hills purchases water from City of Fort Worth which is required to test for thallium. Sample information shown below was taken by City of Fort Worth.

Date Lab ID Result
2018-01-24Q1802705009ND
2018-01-24Q1802705010ND
2018-01-24Q1802705008ND
2018-03-20Q1811001005ND
2018-03-20Q1811001007ND
2019-01-23Q1903345013ND
2019-04-24Q1916570022ND
2019-05-22Q1927658011ND
2019-05-22Q1927658004ND
2019-06-17Q1936867003ND
2020-01-22Q2002459021ND
2020-01-22Q2002459030ND
2020-04-22Q2016071003ND
2020-04-22Q2016071004ND
2020-07-22Q2028872001ND
2021-01-20Q2101402022ND
2021-01-20Q2101402025ND
2021-01-20Q2101402024ND
2021-01-20Q2101402023ND
2021-04-21Q2110318013ND
2022-01-19Q2201985002ND
2022-01-19Q2201985005ND
2022-05-19Q2214821003ND
2022-05-19Q2214821004ND
2022-07-20Q2220779009ND
2023-01-04Q2300420006ND
2023-03-21Q2310673009ND
2023-03-21Q2310673010ND
2023-03-21Q2310673011ND
2023-03-21Q2310673020ND