MWH Soft Releases InfoSWMM and H2OMAP SWMM Version 8.5, Leveraging the Latest EPA SWMM5 Functionality

Newest Iteration of Industry-Leading Geospatial Urban Drainage Modeling and Design Software Delivers Expanded Engineering Simulation Value

Broomfield, Colorado USA, November 11, 2009 – MWH Soft, the leading global provider of environmental and water resources applications software, today announced the immediate release of Generation V8.5 of H2OMAP SWMM and InfoSWMM for ArcGIS (ESRI, Redlands, CA). The new version adds powerful features and leverages engine enhancements included in the latest release of EPA SWMM5 (5.0.017). It also improves depth and performance by extending the MWH Soft tradition of including new enhancements specifically requested by customers. Version 8.5 marks a significant evolution of the company’s SWMM-based urban drainage modeling and design products, which continue to be top choices for the effective evaluation, design, management, rehabilitation and operation of wastewater and stormwater collection systems.

Underlining MWH Soft’s leadership in the wastewater industry, InfoSWMM and H2OMAP SWMM reflect the company’s ongoing commitment to delivering pioneering technology that raises the bar for urban drainage network modeling and simulation, helping to shape the future of this critical sector. The full-featured InfoSWMM urban drainage network analysis and design program is the only urban drainage modeling solution certified by the National Association of GIS-Centric Software ( It addresses all operations of a typical sewer system — from analysis and design to management functions such as water quality assessment, pollution prediction, sediment transport, urban flooding, real-time control and record keeping — in a single, fully integrated geoengineering environment whose powerful hydraulic computational engine is endorsed by the USEPA and certified by FEMA.

H2OMAP SWMM is a fully dynamic, geospatial wastewater and stormwater modeling, simulation and management software application. It can be effectively used to model the entire land phase of the hydrologic cycle as applied to urban stormwater and wastewater collection systems. The model can perform single event or long-term (continuous) rainfall-runoff simulations that account for climate, soil, land use, and topographic conditions of the watershed. H2OMAP SWMM supports geocoding and multiple mapping layers which can be imported from one of many data sources, including Computer-Aided Design (CAD) drawings (e.g., dwg, dgn, dxf); CAD world files; standard GIS formats (Shapefiles, Generate files, MID/MIF files, and ArcInfo coverages); Vector Product Format (VPF) files; attribute tables; grid data; image files; and ODBC files; and CSV files.

Focused on expanded hydraulic improvements, V8.5 features a host of unique new capabilities to help wastewater engineers and planners develop better designs and operational improvements faster and more efficiently. They include enhancements to the transition between node surcharging and node flooding, stronger model validation without interrupting simulation runs, greater RDII data compatibility, infiltration changes that allow the SWMM engine to behave more like TR-55 and TR-20, and the addition of default concentration for dry weather flow pollutants to enable more accurate water quality analysis.

“Continued innovation is a hallmark of MWH Soft,” said Paul F. Boulos, Ph.D., Hon.D.WRE, F.ASCE, President and COO of MWH Soft. “This release continues to set a tempo for rapid, quality product development that widely differentiates MWH Soft from its competitors. The level of innovation in V8.5 is typical of our entire product portfolio, which is unequaled in breadth, depth, strength and best-in-class solutions. These advances empower our customers to solve their most challenging urban drainage problems, increase productivity, improve engineering quality, and optimize system performance and designs. We’ve achieved exciting milestones in this new release but this is just the beginning. Our world-class development team with a very strong engineering focus will provide our customers with future capability that we can only imagine today. We are thrilled to make this one-of-a-kind product available to the extended wastewater and urban drainage modeling communities to help them sustain their infrastructure and improve communities around the world.”

Pricing and availability
Upgrades to InfoSWMM and H2OMAP SWMM V8.5 are now available worldwide by subscription to the Gold, Platinum or Executive program. Subscription members can immediately download the new version free of charge directly from The MWH Soft Subscription Program is a friendly customer support and software maintenance program that ensures the longevity and usefulness of MWH Soft products. It gives subscribers instant access to new functionality as it is developed, along with automatic software updates and upgrades. For the latest information on the MWH Soft Subscription Program, visit or contact your local MWH Soft Certified Representative.

About MWH Soft
MWH Soft is a global leader in infrastructure engineering software and professional solutions designed to meet the technological needs of water, wastewater, and stormwater utilities, government agencies, engineering organizations and academic institutions worldwide. With offices in North America, Europe, and Asia Pacific, MWH Soft product lines empower thousands of engineers to competitively plan, manage, design, protect, maintain and operate highly efficient and reliable infrastructure systems.

Products include unrivalled choice in hydraulic modeling with the multi-user workgroup management (InfoWorks, FloodWorks), stand-alone (H20MAP), ArcGIS-based (InfoWater, InfoSewer, InfoSWMM), AutoCAD-based (H2ONET) software tools for Water Distribution, Sewer and Drainage, Stormwater Management, River Systems and Flood Forecasting; and advanced Asset, Data, and Capital Planning management platforms (InfoNET, InfoNET Mobile, and CapPlan). For more information call MWH Soft at +1 626-568-6868, or visit

MWH Soft Contact:
Adam J. Simonsen
Director of Marketing
Email Contact
+1 626-568-6868

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