Innovation in Water, Wastewater, and Stormwater Network Modeling and Analysis

Projects that have demonstrated excellence in planning, designing, building, operating, modeling, and analyzing water, wastewater, or stormwater networks using hydraulics and hydrology software.

Remote Leak Detection through Hydraulic Modeling
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Winner

Maynilad Water Services, Inc.
Remote Leak Detection through Hydraulic Modeling
Malabon City, Philippines

In Malabon City, Philippines, the Tinajeros district metered area (DMA) had 2,183 residential connections to Maynilad Water Services, provider for greater Manila’s west zone. The DMA’s two inflows did not supply water at the prescribed service level, and the pipe network experienced high head loss. Total pipe replacement, a five-month project estimated at USD 1.7 million, was unfeasible.

A subsequent leak-detection study based on field data, pressure profiling, and hydraulic modeling identified potential locations of leakages. Calibrating the model in WaterGEMS using its Darwin Calibrator module, solved the problem of detecting leaks beneath 2-meter-thick pavement. Analysis took just three days. Field work confirmed a leak in the spot indicated by the model. The repair took two days and cost USD 1,160, an amount equivalent to less than 1 percent of the total pipe replacement.

Optimizing System Yield and Operational Cost with Hydrology and Hydraulics Modeling
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Finalist

Barwon Region Water Corporation
Optimizing System Yield and Operational Cost with Hydrology and Hydraulics Modeling
Colac Shire, Victoria, Australia

To augment raw water supply for the city of Colac in the Western District of Victoria, Australia, the Barwon Region Water Corporation (Barwon Water) considered several key factors before selecting the Wurdee Boluc Channel as the source. The AUD 25 million pumped system will increase Colac’s supply by 1,000 million liters per annum for the next 20 years. WaterGEMS optimized the operational strategy, while eWater SOURCE calculated the long-term system yield.

Barwon Water optimized the pipe size and pump curve combination by applying WaterGEMS tools such as Pump Combination Curves and Energy Management. By optimizing the system yield and operations using the combination of hydrological and hydraulic modeling, Barwon Water reduced estimated capital costs by AUD 3 million and estimated operational costs by AUD 20,000.

Optimization of Pumping Schedules in Remote Communities
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Finalist

Power and Water Corporation
Optimization of Pumping Schedules in Remote Communities
Northern Territory, Australia

Power and Water Corporation (PWC) is a government-owned corporation that provides electricity, water, and sewerage services across the Northern Territory, Australia. In the 1.3 million-square-kilometer area, 72 remote communities pay 30-50 cents per kilowatt hour for electricity – about five times the cost in urban centers. PWC used WaterGEMS and its Darwin Scheduler module to determine optimal pump schedules to save energy costs and reduce carbon emissions in these communities.

SMART meters provided data on hourly demand patterns, water use, and flows in the system, enabling accurate modeling of the pumping regimes. WaterGEMS energy management tools were used to determine energy use and cost for a 30-day period in multiple scenarios. The optimal pumping schedule made possible an energy savings of 15-25 percent, for an annual cost savings of AUD 270,000-450,000.