Know Your Environment. Protect Your Health.

Thallium

Jordanelle Special Service 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.

 

22

Samples

3

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
20190.200 ppb31ND - 0.600 ppb
2020ND20ND
20210.350 ppb41ND - 1.40 ppb
2022ND60ND
20231.18 ppb63ND - 2.50 ppb

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 Result
2018-06-05ND
2019-06-270.600 ppb
2019-06-27ND
2019-06-27ND
2020-08-03ND
2020-08-10ND
2021-06-29ND
2021-07-13ND
2021-09-20ND
2021-10-191.40 ppb
2022-05-16ND
2022-06-01ND
2022-06-16ND
2022-06-16ND
2022-07-19ND
2022-12-14ND
2023-05-242.50 ppb
2023-05-242.40 ppb
2023-06-05ND
2023-07-17ND
2023-08-30ND
2023-08-302.20 ppb