Know Your Environment. Protect Your Health.

Thallium

Cairo

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

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND40ND
2021ND60ND
2022ND30ND
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

Date Lab ID Result
2018-02-26AJ84558ND
2018-05-07AJ88936ND
2018-07-31AJ96067ND
2018-11-28AK06877ND
2019-02-19AK11669ND
2019-05-14AK17456ND
2019-07-29AK23773ND
2019-11-20AK37175ND
2020-05-11AK45785ND
2020-07-08AK50253ND
2020-10-06AK61873ND
2020-10-07AK61992ND
2021-03-16AK71400ND
2021-03-16AK71401ND
2021-05-10AK75017ND
2021-05-10AK75018ND
2021-09-22AK86898ND
2021-11-16AK90889ND
2022-02-08AK94977ND
2022-02-09AK95160ND
2022-04-20AK99445ND
2023-04-26AL30314ND