Norfork Dam Siphon

A siphon through Norfork Dam is improving the North Fork and White rivers' trout habitat by sending a constant flow of cooler water downstream. The 42-inch-diameter pipe moves water from Norfork Lake in Baxter County, Ark., carries it through the dam and down the structure's face, and discharges it...

Okmulgee Raw Water Line

When Okmulgee, Okla. needed an economical way to increase its raw water conveyance capacity, it turned to a low-impact, trenchless method that cost $2.1 million less than an estimated open-trench technique. The solution lay with a 90-year-old concrete pipe and a subsurface technology known as sliplining. The...

Water Treatment Energy Optimization

Proactive utility owners are making energy use more efficient at their water and wastewater treatment plants. Faced with rising commodity costs, increasing service needs and aging infrastructures, plant operators are better managing their energy consumption and saving thousands of dollars. "Energy...

Claremore WWTP Upgrades

Hurricane Katrina sent ripples far beyond the Gulf Coast, ultimately affecting construction material prices throughout the nation. At the time, the City of Claremore, Okla. planned to build a new regional wastewater treatment plant, but skyrocketing costs required officials to consider other options....

The Phosphorus Fix

By implementing the first phase of an enhanced nutrient removal program at its wastewater treatment plant on Sager Creek, the City of Siloam Springs, Ark. is well on its way to meeting unprecedented effluent phosphorus limits targeted for 2012. Next year, the Environmental Protection Agency will consider...

Mustang WWTP SBR Improvements

Under an Oklahoma Department of Environmental Quality consent order to meet water quality targets, the City of Mustang, Okla. had to upgrade its wastewater treatment plant within a fiscally strapped budget. The city worked with Garver to tackle this major capital expense by designing the project in two...

Norman Arsenic Wellhead Treatment

High arsenic levels within drinking water have forced cities to shut down their supply wells, resulting in the surrender of expensive infrastructure and accumulation of idle assets. Norman, Okla. is one such municipality that lost half of its well field. Rather than accept this forfeiture, city leaders...

Lake Maumelle Intake Pump Station

Dennis Yarbro studied the room and knew it would be a tight fit. Yarbro, the supervisor of water resources at Central Arkansas Water's Lake Maumelle Intake Pump Station, was overseeing the addition of a new 30-million-gallons-per-day vertical turbine pump. He looked up to the two-story ceiling and hoped...

Spend a Dime, Save a Dollar

A typical approach to correcting the non-compliant operation of water or wastewater treatment facilities includes developing an engineering report to evaluate and recommend ways to improve the plant's performance through process modifications or newer treatment alternatives. A different—and...

Bentonville WWTP Audit

Before its discharge permit expires in 2014, Bentonville, Ark. is evaluating its wastewater treatment plant to meet potential phosphorus discharge limits and handle planned collection system flows. To stretch funding dollars as far as possible, city officials are making sure the plant operates at maximum...

Tuscumbia Water-Softening Plant

A new water-softening treatment plant in Tuscumbia, Ala. is the state's first water utility to use a blended series membrane process. The state-of-the-art filtration technology is the centerpiece of a new 4 million gallons-per-day (MGD) water treatment plant. The system is purifying and softening...

Fort Sill WWTP Recycling System

An advanced recycling method is repurposing wastewater to reduce potable water usage and improve energy efficiency at Fort Sill in Lawton, Okla. The Fort Sill wastewater treatment plant has adopted a reuse system that replaces on-site potable water usage with high-quality wastewater effluent. The...