Instead of being a barrier, a wall at an Oregon city’s water plant provides scenic value and lets visitors view the treatment process.
An Oregon city combines a constructed wetland used to cool and treat wastewater effluent with a unique botanical garden
A berm richly adorned with desert plantings and boulders hides a Nevada wastewater treatment plant from view.
More operators share photos of their signs and the history behind them
A kinetic sculpture at a King County treatment plant is designed in all aspects to represent water and its movements.