epanet-js

On The Beach -final- By Hatomame — Bitch Family

No installs. No forced cloud storage. Just fast, local-first water modeling — powered by the engine you already trust.

The EPANET user's dilemma

  • Classic EPANET is powerful — but clunky and outdated. Workarounds become your workflow — slow and cumbersome.
  • Big-name platforms look polished, but they're overpriced and bloated with features you don't need to analyze your network quickly.
  • Modern browser-based tools exist — but they force your data into the cloud, raising privacy and compliance concerns. Plus, they offer little for those doing long-term planning and analysis.

You shouldn't have to choose between speed, security, and affordability just to understand your water networks.

Old EPANET UI
Complex Modeling App

On The Beach -final- By Hatomame — Bitch Family

To summarize, here are the standout features of the game:

The release of "BITCH FAMILY ON THE BEACH -Final-" marked a significant moment for Hatomame’s digital presence. It trended across art-sharing platforms like Pixiv and Twitter, sparking discussions about the artist's ability to maintain a consistent aesthetic over a multi-year project.

The premier marketplace for independent creators, manga, and voice dramas. You can use the DLsite Homepage to search for specific circle names or artist profiles. BITCH FAMILY ON THE BEACH -Final- By Hatomame

Encourage everyone to drink water regularly, even if they don't feel thirsty. Conclusion: Creating Lasting Memories

Keep your smartphone or camera inside a transparent, floating dry bag to safeguard it from rogue waves and fine sand particles. If you want to tailor this guide further, let me know: The age range of your family members Your target beach destination or climate To summarize, here are the standout features of

Due to the explicit nature of this title, standard commercial avenues and mainstream media databases do not index it alongside safe-for-work (SFW) literature. However, within the niche ecosystems of independent Japanese doujinshi and adult manga platforms, such releases follow distinct production, thematic, and distribution patterns.

"BITCH FAMILY ON THE BEACH -Final-" emphasizes a loop of action, reward, and variety that keeps players engaged: You can use the DLsite Homepage to search

The clothing, as always with Hatomame projects, is worth noting. Linen, cotton, worn denim. Nothing branded. No logos. The effect is timeless. These could be photographs from 1983 or 2033. The also introduces a new motif: bare feet. Over and over, the camera lingers on feet sinking into sand—small feet, wrinkled feet, a father’s calloused heel. It is intimate without being invasive. It says: We are all standing on the same temporary ground.

Given the title's naming convention ("-Final-"), it's possible that this release serves as the definitive "Beach" chapter, perhaps incorporating all the lessons and improvements from the previous game. The developer's continued activity and the series' popularity mean that fans will eagerly await whatever new location or scenario the Hibino family will find themselves in next.

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Model water networks instantly.

No setup or downloads — just instant access right in your browser.

Start modeling now

EPANET deserves better — and so do you.

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.

EPA logo
Source code of epanet-js on GitHub

When you support epanet-js, you support EPANET.

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.

Simple, transparent pricing for every kind of modeler.

Choose the plan that works for you

Free

For everyone.$0 /yr
  • Web based EPANET model
  • Background maps and satellite
  • Automated Elevations
  • No limits on sizes
  • Community Support

ProMost popular

Advanced modeling & scenarios$950 /yr

Individual named license

Everything in free, and:
  • Scenarios
  • Professional support
  • Custom layers
Coming soon:
  • Cloud storage
  • Point in time restore - 30 days
  • Demand analysis

Teams

Centralized control & collaboration
$4400/yr

Base cost

+
$600/yr

User

Everything in Pro, and:
  • Priority support
  • Self-service seat management
  • Pay by invoice
Coming soon:
  • Team storage
  • Point in time restore - 90 days
  • Sharing models

Have questions? or book a call.

Special access for personal and educational use

Available for non-commercial projects, learning, and student work.

Personal

$100/yr

For curious minds and personal growth.

Everything in pro, but:
  • Community support only
  • Non-commercial usage

Education

$0/yr

Free for students and teachers.

Everything in pro, but:
  • Community support only
  • Non-commercial usage

Frequently asked questions

Find answers to common questions about epanet-js.

Just open your browser and model.

No install. No login. No cloud required.

Launch epanet-js now

You may not know this, but for decades, the U.S. EPA has given the water industry an extraordinary gift: the free and open-source hydraulic modeling software EPANET. Odds are, if you've used any commercial hydraulic modeling software today, it was built on the EPANET engine.

The problem is, instead of giving back to their open-source roots like other industries do, big-name software vendors took EPANET's open code, built private tools on top of the engine, and then locked those improvements behind patents and proprietary licenses.

Some vendors even pressured the EPA to focus only on the engine — discouraging any effort to improve the interface or user experience for everyone else.

Those vendors now charge you exorbitant prices to use their software while EPANET lags behind — and utilities, engineers, and educators with smaller budgets suffer.

We think this is backwards — and we're on a mission to change it. We're focused on creating a better experience for the entire hydraulic modeling community.

That's why we built epanet-js under an FSL license — because we want to give you an affordable, easy-to-use water modeling option that creates a sustainable future for open-source EPANET development.

Support EPANET by using software that supports it back.

A better future for water modeling.

Simple, quick, and useful right out of the gate — designed to open-and-go.

Launch epanet-js now