Case Studies

The Taste of Success

Imagine having the best-tasting water in America. Mt. View–Edgewood Water Co. (MVEWC), located in the state of Washington, won this top honor in the 13th National Rural Water Assn.’s Great American Water Taste Test, held in Washington, D.C.

Additional honors went to MVEWC Field Manager Mike Craig, who was recognized as the Water System Operator of the Year. This highly coveted award, presented by Evergreen Rural Water of Washington state, recognizes the top water system operator in Washington for superior achievement.

Overcoming Odors

The Decatur, Ill., city council embarked on a three-year, $14 million downtown street enhancement project. As part of the project, the council decided to take a proactive approach to ensure that foul sewer odors do not continue to make their way into the downtown area. In addition to a solution that would be effective in eliminating odors, the city council also wanted a green solution that would be inexpensive to install and operate.

Defeating Dairyland Clogging

A Wisconsin water utility was looking for an alternative to a flapper valve as a part of their lift station renovation. Prior to this project, the public works department used a conventional flapper valve, which was not working out because it had numerous problems with debris accumulation, causing the water utility crew to disrupt operations and clear debris regularly. Also, the flapper valve did not seal properly, so backflow became a huge issue. The water utility serves 918 acres and pumps 31 million gal per year.

Polar Vortex Is No Challenge

The winter of 2013 and 2014 featured a “polar vortex”—a severe and sustained arctic blast that closed down businesses, schools, roads and airports across the country for weeks. During this time, Tideflex Mixing Systems (TMS) from Tideflex Technologies kept ice from forming in tanks at a borough water treatment plant in south-central Pennsylvania.

Restraining the River

The Metropolitan Sewer District (MSD) of Greater Cincinnati had two combined sewer overflow (CSO) manholes at the Mill Creek Interceptor that became surcharged and overflowed to the river. It tried a typical fix by bolting down the manhole lids to prevent the discharge, but the lids would be broken off due to surge pressures in the CSO from the throttling of flow into the plant.

Massachusetts City Installs Check Valves to Prevent Flooding

In 2006, the Merrimac River flooded into two residential areas in a Massachusetts city. Twenty-five homes were damaged during the incident.

In the past, this city had partnered with Red Valve Company for flow-metering work. It called Red Valve again to discuss using Tideflex check valves in order to prevent future flooding in these areas.

Inline Check Valve Prevents Storm Water Backflow in Michigan Community

During typical rain events, a storm drain located in a Michigan community would rise significantly and backflow into a connecting storm sewer, causing flooding on heavily traveled streets and adjacent properties. The city installed a duckbill check valve to help prevent the backflow. Unfortunately, the valve protruded from a retaining wall and was damaged by violent surging that occurred at the mouth of the drain during storms.

Keeping Odors and Flooding in Check

A neighborhood in Kentucky was plagued by unpleasant odors that emanated from the community’s combined sewer system (CSO). The odors originated in a collection basin that collects storm water and discharges it through a pipe into the CSO.