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Environmental Science

Why Constructed Wetlands Provide Cost-Effective Wastewater Treatment

Quick fact

A constructed wetland can reduce biochemical oxygen demand (BOD) by 90% or more, achieving treatment levels comparable to conventional plants while using up to 90% less energy.

Why this is interesting

What if a wastewater treatment plant could be a beautiful, natural marsh? Constructed wetlands are doing just that—and saving communities millions of dollars in the process.