01
Draw visually
Click to add junctions, pipes, tanks, reservoirs, pumps and valves. Auto-junctions and snap-to-pipe keep the topology clean as you draw.
Live now — free, no account needed
Hydraulic modeling in your browser, on the EPANET engine.
Draw, import and simulate water distribution networks in minutes — local-first, secure and free. No installs. No cloud required.
Features
Built for working, not troubleshooting
An intuitive, modern interface that gets you to answers quickly — on top of the trusted EPANET engine.
02
Import real plans
Upload shapefiles or DXF drawings — including fillets, arcs and splines — as editable models or colored background layers.
03
Run simulations instantly
Steady-state analysis powered by the EPANET engine, running entirely in your browser via WebAssembly.
04
See results fast
Pressure, flow, velocity and head color-coded straight on the map. No export, no screenshots, no guesswork.
05
Your data stays local
Local-first by default. Projects are saved in your browser — secure, private, and working even without the cloud.
06
Export to your toolchain
Standard EPANET .inp, plus a CAD drawing (.dxf) for AutoCAD and Civil 3D, KML for Google Earth, and ESRI shapefiles — with themed colors and pipe annotations carried through.
Who it's for
One tool for the whole water community
W01
Utilities & consultants
Build fast, run local. Everything you need to get the job done — none of the feature bloat.
W02
Municipal engineers
Screen alternatives against real service-area data before the capital request goes to the board. Undo/redo and auto-elevations keep long build-outs manageable.
W03
Asset management teams
Model a network, export EPANET .inp and GIS shapefiles, and hand the results straight to the rest of the toolchain. No desktop installs, no license server.
About the founder
Built by an engineer who works in the field
Founder & Engineer
EPANetLab was founded by a passionate water, wastewater, and drainage design engineer dedicated to modernizing civil infrastructure workflows. With a strong technical background in environmental engineering and spatial data integration, the founder built EPANetLab to bring fast, local-first, and browser-based hydraulic modeling directly to engineers and utilities — bridging the gap between complex engineering calculations and clean, modern web software.
Water · wastewater · drainage designEnvironmental engineering + spatial dataModern hydraulic software for everyone
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Frequently asked questions
What is EPANetLab?
EPANetLab is a browser-based hydraulic modeling tool for water distribution networks. Built on the trusted EPANET engine, it lets you draw, import, simulate and analyze your water network right in your browser — no installs, no virtual machines.
Do I need to install anything?
No. EPANetLab runs in any modern browser on Mac, Windows and Linux. It works instantly — the EPANET solver is compiled to WebAssembly and runs right in your tab.
Is my data secure?
Yes. EPANetLab is local-first: your projects are saved in your browser by default and never leave your machine unless you choose to sync them.
Can I import my existing EPANET files?
Import is available from GIS: upload shapefiles or DXF drawings — including curves like fillet arcs and splines — as editable models or background layers. Once the network is built you can export a .inp file for the rest of the EPANET ecosystem.
Can I export to .inp?
Absolutely. The .inp exporter writes your model in standard EPANET format, so you can move between EPANetLab and other tools freely.
How much does it cost?
EPANetLab is free to use. If premium features are added later, pricing will be announced then — the core modeling experience stays free.