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.


What's your favorite scene from "Jumper"? Have you seen it? Share your thoughts!
The story follows David (Hayden Christensen), a young man who discovers he has the ability to teleport. He uses his powers to evade capture and live a carefree life on the run. However, his life takes a drastic turn when he's pursued by a sinister organization determined to exploit his abilities.
Hit the link to your preferred platform and enjoy "Jumper" today!
Watch Jumper (2008) - Action-Packed Sci-Fi Thriller!
Are you ready for an adrenaline-packed ride? Look no further than "Jumper," a 2008 sci-fi action film directed by Doug Liman. Starring Hayden Christensen, Rachel McAdams, and Samuel L. Jackson, this movie is sure to keep you on the edge of your seat!
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.
What's your favorite scene from "Jumper"? Have you seen it? Share your thoughts!
The story follows David (Hayden Christensen), a young man who discovers he has the ability to teleport. He uses his powers to evade capture and live a carefree life on the run. However, his life takes a drastic turn when he's pursued by a sinister organization determined to exploit his abilities.
Hit the link to your preferred platform and enjoy "Jumper" today!
Watch Jumper (2008) - Action-Packed Sci-Fi Thriller!
Are you ready for an adrenaline-packed ride? Look no further than "Jumper," a 2008 sci-fi action film directed by Doug Liman. Starring Hayden Christensen, Rachel McAdams, and Samuel L. Jackson, this movie is sure to keep you on the edge of your seat!
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now