EPANET
Gov-PublicVerified
The public-domain standard for water distribution modelling — hydraulics and water quality in pressurised networks.
EPANET-MSX
StableMulti-species water quality for EPANET — model chloramine decay, DBPs and reactive chemistry in networks.
by US EPA
- Pricing
- Gov-Public
- License
- Public domain (CC0)
- Commercial use
- Permitted
- Ecosystem
- EPANET, C engine
- Platform
- Windows, Linux, macOS
About EPANET-MSX
EPANET-MSX (Multi-Species Extension) removes single-species limitation from EPANET's water-quality engine: you define arbitrary chemical species and their reaction kinetics — chloramine decomposition, disinfection by-product formation, arsenic adsorption, microbial regrowth — and MSX simulates them through the network alongside hydraulics.
It is the standard tool when distribution water-quality questions get chemically real. Reactions are specified in a readable text format, and the extension is scriptable through the same toolkits that drive EPANET (Python, MATLAB).
Where it fits in the workflow
TerrainCatchmentRainfallRunoffRoutingHydraulicsMappingReporting
Appears in collections
- The EPANET Ecosystem
The public-domain engine and everything built on it — Python, MATLAB, QGIS and the browser.
Alternatives to EPANET-MSX
Ranked by the topics, categories and workflow stages they share with EPANET-MSX.
EPANET-MATLAB Toolkit
Open Source
Full MATLAB control of the EPANET engine — the standard bridge for control and optimisation research.
InfoWater Pro
Commercial
Autodesk's ArcGIS Pro-native distribution modelling — for utilities whose network data lives in Esri.
OpenFlows WaterGEMS
Commercial
Bentley's flagship distribution suite — design, optimisation and criticality on EPANET-compatible hydraulics.
TSNet
Open Source
Open-source water hammer simulation in Python — method-of-characteristics transients on EPANET networks.
WNTR
Open SourceVerified
Sandia/EPA's Python toolkit for water network resilience — EPANET simulation plus disaster scenarios and metrics.