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.


Readers appreciated the focus on Sam's personal life, particularly the compelling and tense storyline involving her ex-husband.
Reviewers frequently describe it as a "page-turner" that can be finished in a single sitting or afternoon.
A few readers feel the book is essentially a short story padded out into a novella. Availability
The book holds a strong on Goodreads and similar high ratings across retail platforms like Amazon . Strengths:
The Lake District setting is praised for adding a beautiful yet eerie layer to the crime elements. Weaknesses:
is the sixth installment in the DI Sam Cobbs thriller series by M.A. Comley, set against the scenic backdrop of the Lake District. Released in October 2022, this police procedural is noted for its fast pace and "shocking" climax that heavily impacts the following books in the series. Plot Summary
The story begins with the disappearance of a local teacher, Fern Mitchell, whose body is later discovered at a popular tourist site with a bullet wound to the head. Shortly after, a second woman is found drowned in a different lake. DI Sam Cobbs and her team uncover a link between the victims—they were both members of the same wild swimming group—leading to a race to find the killer before more members are targeted.
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.
Readers appreciated the focus on Sam's personal life, particularly the compelling and tense storyline involving her ex-husband.
Reviewers frequently describe it as a "page-turner" that can be finished in a single sitting or afternoon. Download Punish Them Lake District Comley epub
A few readers feel the book is essentially a short story padded out into a novella. Availability Readers appreciated the focus on Sam's personal life,
The book holds a strong on Goodreads and similar high ratings across retail platforms like Amazon . Strengths: Availability The book holds a strong on Goodreads
The Lake District setting is praised for adding a beautiful yet eerie layer to the crime elements. Weaknesses:
is the sixth installment in the DI Sam Cobbs thriller series by M.A. Comley, set against the scenic backdrop of the Lake District. Released in October 2022, this police procedural is noted for its fast pace and "shocking" climax that heavily impacts the following books in the series. Plot Summary
The story begins with the disappearance of a local teacher, Fern Mitchell, whose body is later discovered at a popular tourist site with a bullet wound to the head. Shortly after, a second woman is found drowned in a different lake. DI Sam Cobbs and her team uncover a link between the victims—they were both members of the same wild swimming group—leading to a race to find the killer before more members are targeted.
Simple, quick, and useful right out of the gate — designed to open-and-go.
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