It’s been said that making major upgrades to an in-service clean-water plant without incurring violations is a like changing a tire on a car going 60 miles an hour without having a wreck.
Yet that’s just what the staff of the Nampa Wastewater Treatment Plant is doing.
Located 20 miles west of Boise, Nampa is the third-largest city in Idaho. It also runs the state’s oldest and third-largest wastewater treatment plant. The facility (18 mgd design, 11 mgd average) serves about 102,000 people and a population equivalent of 250,000 when industrial and commercial facility flows are included.
Throughout an area called
