Know Your Environment. Protect Your Health.

Thallium

University of Connecticut - Main Campus

NOTE: University of Connecticut - Main Campus purchases water from Connecticut Water Company - Northern Region-Western System which is required to test for thallium. Sample information shown below was taken by Connecticut Water Company - Northern Region-Western System.

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
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: University of Connecticut - Main Campus purchases water from Connecticut Water Company - Northern Region-Western System which is required to test for thallium. Sample information shown below was taken by Connecticut Water Company - Northern Region-Western System.

Date Lab ID Result
2018-01-23BZ78887IOC1ND
2018-03-02BZ97488IOC1ND
2018-07-12CA89150ND
2018-07-13CA89903ND
2019-01-15IOC1 200518779ND
2020-01-09IOC1 200562368ND
2020-09-21IOC1 200591023ND
2021-02-17IOC1 200607102ND
2022-01-24CK22294ND
2022-01-25CK23176ND
2022-02-01CK27430ND
2022-02-16CK69357ND
2022-09-08CM25672ND
2023-01-11CN20957ND
2023-01-18CN25096ND
2023-08-23CO81672ND
2023-10-31CP38331ND
2023-12-13CP67269ND