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.


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Pre-calculus 11 is a crucial course in mathematics that lays the foundation for advanced math subjects, including calculus, statistics, and physics. The course covers various topics, including functions, graphs, and trigonometry, which are essential for understanding more complex mathematical concepts. To excel in pre-calculus 11, students need to have a solid grasp of the underlying theory and be able to apply it to solve problems. In this article, we will provide an in-depth look at the theory and problems for pre-calculus 11, along with a downloadable PDF resource.
No setup or downloads — just instant access right in your browser.
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
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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.
No install. No login. No cloud required.
[Insert link to PDF resource]
To download the PDF resource, click on the link below:
Pre-calculus 11 is a crucial course in mathematics that lays the foundation for advanced math subjects, including calculus, statistics, and physics. The course covers various topics, including functions, graphs, and trigonometry, which are essential for understanding more complex mathematical concepts. To excel in pre-calculus 11, students need to have a solid grasp of the underlying theory and be able to apply it to solve problems. In this article, we will provide an in-depth look at the theory and problems for pre-calculus 11, along with a downloadable PDF resource.
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now