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.


Beyond just rules, it provides over 150 tips on how to sound more natural and avoid common errors.
Designed to fit in a bag or pocket, it’s ideal for studying during commutes.
Explanations are based on thorough corpus research, ensuring the examples reflect how English is actually spoken and written today. How to Access the Material
While many users look for a for digital convenience, it is important to utilize legitimate sources to ensure you receive the complete, accurate content and support the creators. Oxford Learner's Pocket Grammar: Eastwood, John
The book is divided into 180 units , each focusing on a specific grammar topic. Each topic is neatly organized into a two-page spread , making it easy to digest in short sessions.
An extensive cross-referencing system helps learners quickly connect related grammar points.
For students at the (Upper Intermediate to Mastery), lugging around a massive textbook isn't always practical. This pocket-sized edition offers:
Its syllabus is specifically aligned with the requirements of IELTS and Cambridge English exams like FCE, CAE, and CPE .
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
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Available for non-commercial projects, learning, and student work. oxford learner-s pocket grammar pdf download
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.
Beyond just rules, it provides over 150 tips on how to sound more natural and avoid common errors.
Designed to fit in a bag or pocket, it’s ideal for studying during commutes.
Explanations are based on thorough corpus research, ensuring the examples reflect how English is actually spoken and written today. How to Access the Material
While many users look for a for digital convenience, it is important to utilize legitimate sources to ensure you receive the complete, accurate content and support the creators. Oxford Learner's Pocket Grammar: Eastwood, John
The book is divided into 180 units , each focusing on a specific grammar topic. Each topic is neatly organized into a two-page spread , making it easy to digest in short sessions.
An extensive cross-referencing system helps learners quickly connect related grammar points.
For students at the (Upper Intermediate to Mastery), lugging around a massive textbook isn't always practical. This pocket-sized edition offers:
Its syllabus is specifically aligned with the requirements of IELTS and Cambridge English exams like FCE, CAE, and CPE .
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now