EPANET
Gov-PublicVerified
The public-domain standard for water distribution modelling — hydraulics and water quality in pressurised networks.
Water Distribution & QualityActiveEPANETWater Distribution Modelling
OpenFlows WaterGEMS
ActiveBentley's flagship distribution suite — design, optimisation and criticality on EPANET-compatible hydraulics.
by Bentley Systems
- Pricing
- Commercial
- License
- Proprietary
- Commercial use
- Permitted
- Ecosystem
- AutoCAD, MicroStation, ArcGIS
- Platform
- Windows
About OpenFlows WaterGEMS
WaterGEMS is Bentley's water distribution workhorse: EPANET-compatible hydraulics and water quality extended with Darwin genetic-algorithm calibration and design optimisation, criticality and outage analysis, pipe renewal planning (with companion tools), SCADA connection, and integration into AutoCAD, MicroStation and ArcGIS.
Large utilities buy it for the surrounding workflow — model management, skeletonisation, optimisation — rather than the solver itself. Models import and export EPANET INP cleanly, which keeps migration risk low in both directions.
Where it fits in the workflow
TerrainCatchmentRainfallRunoffRoutingHydraulicsMappingReporting
Alternatives to OpenFlows WaterGEMS
Other water distribution & quality tools covering similar workflow stages.
WNTR
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Sandia/EPA's Python toolkit for water network resilience — EPANET simulation plus disaster scenarios and metrics.
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Full MATLAB control of the EPANET engine — the standard bridge for control and optimisation research.
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EPANET-MSX
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Multi-species water quality for EPANET — model chloramine decay, DBPs and reactive chemistry in networks.
Water Distribution & QualityStableEPANETWater Quality Modelling
InfoWater Pro
Commercial
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Water Distribution & QualityActiveWater Distribution ModellingPipe Network Analysis
OpenFlows HAMMER
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Bentley's transient analysis package — the commercial standard for surge studies on pumping mains.
Water Distribution & QualityActiveWater HammerPump Systems