What acts as the large-scale buffer and 'treatment polishing' stage in Indirect Potable Reuse?

Answer

The natural environment (rivers, aquifers, or the ocean).

Indirect potable reuse relies on releasing treated wastewater back into the environment, allowing the natural setting to act as a large-scale buffer before the water is drawn back in as raw source water.

What acts as the large-scale buffer and 'treatment polishing' stage in Indirect Potable Reuse?
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