Know Your Environment. Protect Your Health.

Mercury (inorganic)

City of Rexburg

Mercury is a potent neurotoxin that also damages the kidneys and other internal organs. Mercury enters drinking water from industrial pollution, mining wastes and coal-fired power plants.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019N/A00N/A
2020ND20ND
2021ND20ND
2022ND50ND
2023ND30ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 1.2 ppb

The EWG Health Guideline of 1.2 ppb for mercury (inorganic) 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 inorganic mercury, established in 1991, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s. This limit does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date Lab ID Result
2018-06-29IB18070188001ND
2018-06-29IB18070177001ND
2018-08-01I1813261ND
2020-06-29IB20070003001ND
2020-06-29IB20062582003ND
2021-04-01IB21040627004ND
2021-04-01IB21040627003ND
2022-06-27IB22062447001ND
2022-06-27IB22062447002ND
2022-06-27IB22062447007ND
2022-06-27IB22062447008ND
2022-06-27IB22062447009ND
2023-06-14IMDF068705ND
2023-06-14IMDF068706ND
2023-06-14IMDF068707ND