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O2 – Good for Lake Quality
Not just oxygen (O2), but dissolved oxygen (DO) is necessary for good water quality. The concentrations of such oxygen in unpolluted fresh waters can vary greatly and is influenced by temperature, atmospheric pressure, and salinity. Dissolved oxygen is essential for gilled fish and insects, and influences many biological and chemical processes in lakes and streams.

Sufficient dissolved oxygen in the water makes life possible for fish, insects, snails, crayfish, frogs, and various other aquatic organisms. The presence of oxygen allows other important chemical reactions to occur in water as well. For example, a well oxygenated lakes dissolved phosphorus and iron combine. This chemical process removes phosphorus from the water.

Read more about the science of dissolved oxygen.

 
 


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Investigation Underscores Need for Water Quality Funding - Research shows the hazardous impacts of fertilizer runoff are not isolated to the Gulf of Mexico. Over-concentrated nutrients also endanger our recreation areas, as with the 1,400 closures or swim warnings issued this summer at public beaches in the 12 states under review. Most troubling of all, those nutrients end up in our drinking water, potentially threatening our health and driving up municipal governments’ water treatment costs, which are covered by our tax dollars.


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