Know Your Environment. Protect Your Health.

Thallium

Meriden Water Division

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.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND80ND
2020ND40ND
2021ND40ND
2022ND70ND
2023ND70ND

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
2018-07-19CA94411ND
2018-07-19CA94410ND
2018-07-19CA94412ND
2018-08-23CB17441ND
2019-06-19CD38010ND
2019-06-19CD38011ND
2019-06-19CD38012ND
2019-06-24CD40812ND
2019-06-26CD42474ND
2019-06-26CD42475ND
2019-06-26CD42476ND
2019-07-31CD69099ND
2020-06-10CG10479ND
2020-06-17CG16086ND
2020-06-17CG16087ND
2020-06-17CG16088ND
2021-06-09CI51094ND
2021-06-09CI51092ND
2021-06-09CI51093ND
2021-06-09CI51091ND
2022-05-25CL38209ND
2022-06-01CL45769ND
2022-06-01CL45770ND
2022-06-01CL45771ND
2022-10-26CM70801ND
2022-10-26CM70802ND
2022-11-09CM80568ND
2023-01-30CN32219ND
2023-03-08CN55431ND
2023-03-13CN58724ND
2023-03-15CN60227ND
2023-03-15CN60228ND
2023-03-22CN65582ND
2023-07-17CO51914ND