Study: 6 Million U.S. Residents Are Drinking Uranium Contaminated Water


 

Nitrates, which comes from chemical fertilizers and animate waste, accounts for 78% the pollution. Nitrates makes uranium soluble in groundwater through oxidation.

The California-based Central Valley aquifer has even higher concentration levels with uranium concentrations 180 times the MCL and nitrate concentration levels 34 times the MCL.

Though the researchers say it’s difficult to know how much uranium residents are ingesting personally, they mapped out the most affected regions: northern Texas and throughout Nebraska.

states contaminated uranium

Map showing nitrate and uranium levels in aquifersEnvironmental Science and Technology LettersMap showing nitrate and uranium levels in aquifers

Uranium toxicity is caused by eating or drinking substances containing uranium. It then enters the bloodstream through the gastrointestinal system and is filtered by the kidneys, where it can cause damage to the kidney cells. A study for the Agency for Toxic Substances and Disease Registry also found that other potential damage might occur in the reproductive system.

Nitrate has also been shown to have adverse health effects on humans, although it mostly affects people with pre-existing medical conditions. Nitrate affects the ability of red blood cells to carry oxygen, but in most people the levels rapidly go back to normal. Infants on the other hand need longer to stabilize the oxygen levels and might develop a condition called methemoglobinemia or “blue baby syndrome.” Nevertheless many studies now dispute the link between nitrate and the blue baby syndrome.

It can also adversely affect people who do not have enough stomach acids and people who have a lack of the enzyme that is needed to convert red blood cells back to normal (an inherited condition). Moreover, it can increase the risk of miscarriages and certain birth defects.

The study found that 78% of the uranium-contaminated sites are linked to the presence of nitrate, a common groundwater contaminant, that stems from chemical and animal waste fertilizers. Nitrate, through a series of bacterial and chemical reactions, oxidizes uranium which then makes it soluble and capable of leaching into groundwater.

Source: businessinsider.com



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