epanet-js
No installs. No forced cloud storage. Just fast, local-first water modeling — powered by the engine you already trust.
You shouldn't have to choose between speed, security, and affordability just to understand your water networks.


: Company accounts often feature billions of Euros, allowing you to buy and customize any fleet.
: No level restrictions on purchasing high-end truck parts or specialized trailers. How to Install a Save Profile To use a downloaded save profile, follow these steps:
: All roads, cities, and recruitment agencies are pre-visited and visible on the map.
: Every garage in the game is typically purchased and upgraded to the large size.
: If the profile doesn't show up, you may need to disable "Use Steam Cloud" in the game’s profile edit menu to force the game to read local files.
If you prefer to modify your own existing 1.44 profile, you can use these tools:
EPANET was a gift to the industry — free, open-source water modeling for all. But commercial vendors built on it, locked away improvements, and left the community behind.
epanet-js is our answer: a faster, simpler, affordable water modeling tool that protects your privacy and sustains the open-source future of water modeling.
We're proud to be part of the next chapter — and we're just getting started.

When you purchase more features in epanet-js, you're investing in the future of open-source EPANET development.
Our open-source model balances innovation and accessibility:
Anyone can build on our code. The two-year commercial-use delay gives us the incentive to keep pushing forward — and that fuels progress for everyone.
That means when you support us, you support more affordable hydraulic modeling software for the entire community.
Choose the plan that works for you
Individual named license
Floating shared license
Have questions? or book a call.
Available for non-commercial projects, learning, and student work.
For curious minds and personal growth.
Free for students and teachers.
Find answers to common questions about epanet-js.
: Company accounts often feature billions of Euros, allowing you to buy and customize any fleet.
: No level restrictions on purchasing high-end truck parts or specialized trailers. How to Install a Save Profile To use a downloaded save profile, follow these steps:
: All roads, cities, and recruitment agencies are pre-visited and visible on the map.
: Every garage in the game is typically purchased and upgraded to the large size.
: If the profile doesn't show up, you may need to disable "Use Steam Cloud" in the game’s profile edit menu to force the game to read local files.
If you prefer to modify your own existing 1.44 profile, you can use these tools:
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now