How can water quality be assessed?

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All of these methods are commonly used to assess water quality. Measuring dissolved oxygen levels can indicate the amount of oxygen available to support aquatic organisms, measuring pH can indicate the acidity or alkalinity of the water, measuring nitrates can indicate the amount of nutrients in the water that can contribute to algal blooms and eutrophication, and counting benthic macroinvertebrates can indicate the overall health of the aquatic ecosystem. By using all of these methods in combination, a more complete assessment of water quality can be obtained.

How Can Water Quality Be Assessed