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 .inp files, shapefiles or DXF drawings — including fillets, arcs and splines — as editable models or colored background layers.
03
Run simulations instantly
Steady-state and extended-period 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
EPANET file compatible
Import and export .inp files with no conversion. Interoperable with the EPANET ecosystem you already use.
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
Educators & professors
Teach the concepts without fighting software. Students draw real networks and run sims in minutes, not hours.
W03
Students & new engineers
Focus on learning, not software quirks. Undo/redo, auto-elevations and visual overlays help you learn water modeling quickly.
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, utilities, and students — bridging the gap between complex engineering calculations and clean, modern web software.
Water · wastewater · drainage designEnvironmental engineering + spatial dataModern hydraulic software for everyone
Connect on LinkedInFAQ
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?
Yes. Import .inp files, or go straight from GIS by uploading shapefiles and DXF drawings — including curves like fillet arcs and splines — as editable models or background layers.
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.