As part of a pre-emptive program to address non-revenue water loss and understand the condition of their pipes, Gothenburg wanted to conduct a condition assessment and leak detection survey on a series of large diameter transmission mains. The three pipelines were built in the 1960s and made of cement and steel, ranging in size from 1000 mm to 1200 mm.

Predictive monitoring and automated control optimized combined sewer operations, reducing overflow volumes and deferring major capital infrastructure investment.

The assessment was urgent, as Flower Mound planned to widen a major road next to the main and wanted reliable information on the condition of that particular pipeline before the road was built. Any necessary repairs or replacement needed to be completed prior to construction to avoid significant disruption and additional expense.

Over the last few years, the operation and maintenance of the large valves had declined due to focus being placed on other critical priorities. Without a consistent exercise routine for critical valves, the utility found that many of these valves were inoperable and, as a result, began to seek funding for valve replacements.

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).

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.