MWH soft, a leading global innovator of wet infrastructure modeling and simulation software and technologies

MWH Soft, a leading global innovator of wet infrastructure modeling and simulation software and technologies, today announced the worldwide availability of H2ONET MSX, a state-of-the-art software for simulating and designing reaction systems at any level of complexity. The product is an extension for H2ONET, the standard in AutoCAD 2010-integrated water distribution modeling and management software.

There are a number of commercial programs for modeling the hydraulic and water quality behavior of drinking water distribution systems. However, their water quality components are limited to a certain number of fixed kinetic models, and can only track the transport and fate of a single chemical species such as fluoride or free chlorine. H20NET MSX equips utilities with unprecedented power to model multi-source, multi-quality systems and accurately assess the fate and transport of contaminant threats within them to best safeguard public health.

This breakthrough software enables engineers to accurately model very complex reaction schemes between multiple chemical and biological species in water distribution piping systems, both in the bulk flow and at the pipe wall. This gives users the flexibility to model a wide range of important chemical reactions, including free chlorine loss, formation of disinfection byproducts, nitrification dynamics, disinfectant residuals, pathogen inactivation, chloramine decomposition and adsorption on pipe walls.
H20NET MSX can be effectively used to track the movement, fate and buildup of particulate material in the distribution system. It considers both settling of particles under gravity and deposition of particles on the pipe walls due to particle/pipe surface attractive forces. This feature can greatly assist water utilities in improving distribution design to minimize dirty water, thus enhancing positive relationships with their customers.

In addition, the program allows users to input any mathematical models of physical, chemical, and biological reactions in the bulk water and on pipe surfaces. It also accepts any number of user-specified parameters and cross-dependent or independent formulas for process models. These capabilities give users unprecedented flexibility in accurately modeling individual or combined kinetics in drinking water distribution systems, resulting in improved water quality maintenance and management.

“This latest evolution in our AutoCAD-based product line brings a host of new, highly advanced capabilities for modeling distribution systems’ water quality and sediment transport directly to the AutoCAD environment,” said Paul F. Boulos, Ph.D., Hon.D.WRE, F.ASCE, President of MWH Soft. “By giving water utility engineers easy access to comprehensive, leading edge water quality research through products like H20NET MSX, we continue to enhance their ability to consistently design and operate safe and reliable drinking water infrastructures and effectively protect public health.”

H2ONet MSX is available immediately by subscription worldwide. Existing H2ONet users can upgrade at a discounted price. For the latest information on the MWH Soft Subscription Program, including availability and purchase requirements, visit or contact your local MWH Soft Certified Representative.

About MWH Soft
MWH Soft is a global leader in wet infrastructure engineering modeling, simulation and management 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. For more information call MWH Soft at +1 626-568-6868, or visit

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