After nearly 25 years, Grand Rapids finished retrofitting its combined sewer overflow system to a separate sanitary and stormwater system, completing its long-term control plan (LTCP) in 2015. But now, the City needed to get a better understanding of the infiltration and inflow into these newly separated sanitary sewers to ensure compliance with a mandate from the Michigan Department of Environmental Quality (DEQ).

Xylem built a coal ash disposal solution that met regulatory requirements while controlling labor and fuel costs.

A North American power utility needed to dewater wet fly ash ponds at sites without permanent power. Xylem engineers created a modular system that combined different products into a single streamlined solution.

Xylem was tasked with designing a seep collection system to collect water from a low volume seep through the wall of a decommissioned fly ash pond. The sump was located in an active river floodplain that flooded with as little as 1-2 inches of rain, so the customer needed an automatic shutdown when the river covered the sump.

Clayton County Water Authority (CCWA) is a good example of a utility that doesn’t let a confined geographical footprint stop it from thinking outside the box. As one of Georgia’s smallest counties in terms of land size area (only 143 square miles), its location near the top of a regional watershed means it has little area to gather precipitation into streams and rivers.

Although St. Francis, Minnesota, located in Anoka and Isanti counties, has a population of only 7,218, it has big ideas when it comes to the future of its wastewater treatment system. Those big ideas came to fruition starting in 2015 when the city began building a new treatment facility at its existing wastewater treatment plant, which was built in the 1970s. Although upgraded in 2000, the upgrade did not address existing and future regulations regarding ammonia and phosphorus.

A national beer brewery in Georgia needed to address deterioration and replacement of some of the drain pipes running from their fermentation tanks. For this to be classified as a successful repair and replacement effort, it needed to be achieved while keeping 25,000 barrels of beer a day flowing and simultaneously maximizing plant uptime and profitability.