Melbourne Water is a water wholesaler in Victoria, Australia, and is ranked among the top performing Australian and international water utilities. Melbourne Water delivers over 430 billion litres (114 billion gallons) of safe drinking water and treats over 300 billion litres (79 billion gallons) of sewage from across Melbourne.

In 2004, a major west coast city began construction of two new interceptor sewers. The 12 foot diameter intercept lines relieve hydraulic overloading, but also created a number of turbulent areas where nuisance odors adversely affected the local residential community. These odors were primarily H2S at concentration levels of up to 150 ppm, as well as volatile organic contaminants (VOCs).

The city of Rosemount, Minnesota, was seeking treatment for phosphorus in the effluent discharge from the city's wastewater treatment plant. The customer's 0.75 MGD facility was permitted to discharge wastewater with a maximum average monthly total phosphorus level of 1.0 mg/l; however the effluent from the facility's newly installed disc filters was exceeding the NPDES permit limit.

This client operates a groundwater treatment facility at a Super Fund site where groundwater is pumped to a VOC stripper for the removal of TCE which is then re-injected into the aquifer. High iron levels in the groundwater caused fouling of pumps, pipes and well casings. This fouling threatened the reliability of the process in terms of flow.

​As part of an upgrade to the town’s wastewater treatment facility, Ranchester was considering an expansion of its existing lagoon infrastructure to include anaerobic pre-treatment. The project involved dividing an existing aerated lagoon into two separate cells.

The Griswold Water Treatment Plant is part of Aurora Water, the utility that manages water and wastewater in the city of Aurora, Colorado, USA. This direct filtration plant treats 80 million gallons of water per day (302,800 m³/d).

Bio-diversity in Florida’s St. John’s River estuaries is dependent on clean water. Growth in the area’s coastal communities is adding nitrogen and phosphorous nutrients to the river through wastewater discharges.

The South Dearborn Regional Sewer District in Lawrenceburg, Indiana, provides regional wastewater treatment services for three cities and an international distillery. The 6 mgd treatment plant is located in an area of high population growth and is surrounded by many retail operations and other commercial developments.

Located in the Shenango Valley watershed of western Pennsylvania, the City of Hermitage's aging infrastructure began to collide with its growing treatment needs. Hermitage also undergoes heavy summer thunderstorms when wastewater volume can double or triple in a couple of hours.

Constructed in the 1980s, the A.J. Brown plant is the largest of three wastewater plants in the city of Huntsville. This upgrade will expand capacity, improve energy efficiency and better handle peak wet weather flows in a small footprint. 

Xylem has announced that it has been selected by Payson City, Utah, to expand the City’s wastewater treatment plant. The plant expansion will address the needs of this growing community as well as meet current and future nutrient removal requirements.

Nutrient removal is an important process in meeting high quality effluent requirements. Excessive levels of nitrogen and phosphorous disrupt the natural environment and can affect the health of water systems. Furthermore, Prattville's wastewater system was projected to reach its capacity as the population of the surrounding area grew.

Key West is one of America’s most scenic locales. Situated in the Florida Keys southwest of Miami, it is visited by millions of people each year and is home to more than 30,000 year-round residents. While there’s plenty of ocean, potable water is a precious commodity which is piped 125 miles from the mainland.

A forward-thinking not for profit private utility was in need to keep pace with population growth and seasonal flows in a space-constrained, environmentally sensitive resort environment. Walton County, a coastal resort area in northwestern Florida doubles its population during the spring break and summer seasons.

Xylem, an industry leader in mission-critical water treatment solutions, has been selected through a fair and open competitive bidding process to replace eight Rotating Biological Contactors (RBCs) that have reached the end of their useful life at the Cape May County, Municipal Utilities Authority, Cape May Wastewater Treatment Facility.

In December 2009, a non-hazardous liquid waste treatment facility in Wisconsin was exceeding their permitted level of 0.165 ppm tin in their final wastewater effluent discharge to the Publicly Owned Treatment Works (POTW). Additionally, effluent levels for lead and copper also approached permit limits and were a concern to this customer.

Located in Wernersville, Pennsylvania a borough of Berks County, the Robesonia – Wernersville Municipal Authority Wastewater Treatment Facility was prompted to upgrade its filtration process to address two aging traveling bridge sand filters and to meet new state water quality standards, including phosphorus effluent limits.

Xylem has been selected by Severn Trent to supply its innovative ballasted clarification technology, the CoMag® system, at yet another major wastewater treatment works. This new contract at Hartshill (near Nuneaton) follows the successful implementation of the CoMag system.

Heart of the Valley Sewerage District in Kaukauna, Wisconsin required high-purity water to test plant effluent for biochemical oxygen demand (BOD) and other contaminants. Testing is required to ensure that the effluent meets state and federal guidelines before discharge into the Fox River.

League City contracted with CDM Smith to manage the expansion project and design and construct a 4.0 MGD (design) / 12 MGD (peak)treatment facility with an energy, labor, and operational efficient process that would meet exceptionally stringent discharge limits. The facility also needed to ensure Type I or Type II non-potable reuse was available for future irrigation and/or amenity use.

Xylem was contacted by a Mid-Atlantic Water Authority to propose an odor control solution at one of their pump stations. The Authority was treating the odors with a sodium hypochlorite (bleach) solution to varying degrees of success. Downstream hydrogen sulfide levels in the atmosphere were the primary contributors to odor complaints, reports of corrosion, and worker safety issues.

Evoqua Water Technologies LLC was contacted by a South Florida Municipality to provide an odor control solution for a lift station within their collection system. In the past, the municipality had implemented biofiltration for control of atmospheric hydrogen sulfide. However, in recent years the biofilter was removed, leaving the lift station untreated and exposed to high sulfide concentrations.

The City of Los Angeles’ Hyperion Wastewater Treatment Plant is one of the largest in the United States. It serves approximately 9 million people by treating 460 mgd of wastewater. Built in 1949, the plant was designed to treat up to 450 mgd but was forced to reduce secondary treatment in the 1960’s to 120 mgd due to limited secondary capacity.

The Grass Valley Wastewater Treatment Plant provides service for a population of approximately 12,000 people. Situated in California’s Gold Country, the area has some unique challenges that include mine drainage and heavy flows during the winter storm season in the scenic Sierra Nevada foothills. On average, the City discharges 2.1 million gallons per day of treated wastewater effluent to Wolf Creek, a tributary of the Bear River.