Know Your Environment. Protect Your Health.

Thallium

City of Woodway

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

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
2018ND20ND
2019ND10ND
2020ND50ND
2021ND20ND
2022ND10ND
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 Woodway purchases water from City of Waco which is required to test for thallium. Sample information shown below was taken by City of Waco.

Date Lab ID Result
2018-01-09AE08267ND
2018-01-09AE08268ND
2019-01-23AE50861ND
2019-01-23AE50862ND
2020-02-05AE96998ND
2020-02-05AE96999ND
2020-02-05AE97000ND
2021-03-17AF47206ND
2021-03-17AF47207ND
2022-01-26AF81839ND
2022-01-26AF81840ND
2023-03-01AG31066ND
2023-05-10AG39909ND