PCSWMM is an advanced modelling software for stormwater, wastewater, watershed and water distribution systems. It is scalable, affordable and robust to suit your needs. PCSWMM will help improve your new water supply, drainage and green infrastructure design, floodplain delineation, sewer overflow mitigation, water quality and integrated catchment analysis, 1D-2D modelling and a lot more. It is easy to learn and we help you achieve this!

Besides saving your time, it is smart and easy-to-use having high performance, stand-alone GIS engine at its core. It can efficiently analyse systems, synthesize and develop models to make the process of decision making simpler. PCSWMM is built to suit your existing software ecosystem. With its open standard, PCSWMM model file can be shared easily by various means.



PCSWMM assimilates a powerful GIS engine that works seamlessly with the latest GIS data formats, and provides intelligent tools for streamlining model development, optimization and analysis in a comprehensive range of applications.

  • PCSWMM supports the leading open standard and proprietary GIS and CAD formats, including ArcGIS, Geomedia SQL, MapInfo, Micro station, AutoCAD, GML, OpenGIS SQL, KML and many other formats, giving higher flexibility.
  •  Windows 7 interface (also compatible with Windows Vista, XP, and 2000 operating system)
  • Multi-threaded application with support for multiple cores (dual-core, quad-core and greater) for significant speed improvements
  • Written from the ground up in C# for .NET, utilizing many new technologies (e.g. Google Earthtm, web documentation, etc.)
  • SWMM model natively stored in your choice of open GIS format (e.g. Shape file, Personal Geodatabase, OpenGIS SQL, GML, etc.) *
  • Hydrology / Hydraulics engine is public domain (official US EPA SWMM5)- well written and well documented object-oriented C+ code
  • Comprehensive support for GIS layer types (over 30 formats)
  • Flexible importing from Microsoft Exceltm, CSV and virtually all database formats, incl. Accesstm, SQL Servertm, Oracletm, MySQLtm, XML, OLE DB and ODBC sources, plus direct importing from 17 common GIS/CAD vector formats
  • Conversion of existing older SWMM models to SWMM5 format
  • Model merging (combining smaller models to form a larger ‘macro’ model)
  • Automatically create model connectivity (i.e. assign inlet and outlet nodes for links) for imported entities based on node proximity and relative node invert elevations
  • Table sorting by attribute, synchronizing map extent with table selection, etc.
  • Multi-entity attribute editing, incl. mathematical operations (add, subtract, multiply, divide, apportion, etc.)
  • Free and immediate email and direct telephone technical support with our staff of knowledgeable professional engineers
  • Extensive, searchable documentation with comprehensive reference tables for parameter values
  • Searchable PCSWMM Frequently Asked Questions database
  • Comprehensive searchable US EPA SWMM5 knowledge base (3400+ topics and growing)
  • Free SWMM-USERS list server (800+ participants around the world)
  • Web-based and classroom workshops available at different locations. Library of peer-reviewed case studies available through publications
  • Cost-effective and timely model review services available
  • Professional consulting engineering services available
  • Software customization services available


  • Sewer System Designs
  • Stormwater System Designs
  • To design and sizing of the drainage system components for flood control.
  • Designing Rainwater Harvesting Systems
  • To evaluate the effectiveness of best management practices (BMPs) and/or Low Impact Development (LID) for reducing wet weather pollutant loadings.
  • To perform integrated catchment/watershed management modeling without difficulty, including rural areas, river systems, urban sewer systems, treatment plants and receiving waters.
  • To evaluate strategies for non-point source pollutant loadings for TMDL, NPDES, MS4, CMOM and related studies.
  • To easily determine the size and configuration of effective detention ponds and their appurtenances for flood control and water quality protection.
  • To have better design and analysis of impact of rainfall and storm water management control strategies for minimizing sewer overflows, sanitary sewer overflows, water in basements, surcharging, street flooding and/or rainfall-dependent inflow and infiltration.
  • To forecast rainfall, runoff, flows and water levels. These detailed real-time models can be leveraged for other uses, such as floodplain delineations, remediation studies and master planning
  • To dynamically model natural channels in rural and urban watersheds, considering various parameters like flooded structures, backwater effects, spatially-distributed and dynamic rainfalls, groundwater interflow and flood inundation
  • To evaluate the impact of rainfall-dependant inflow and infiltration (RDII) on sanitary sewer overflows and water-in-basements (WIBs).


Please contact us for information on pricing.

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