epanet-js

Download S140521 Rar 💫

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

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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Classic EPANET is powerful — but clunky and outdated.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.

Files with these generic alphanumeric names (S-digit codes) are frequently used to deliver Trojan horses , adware , or ransomware .

These .rar files are often password-protected to prevent antivirus software from scanning the malicious contents inside. 🛡️ Safety Recommendations

If you found this link on a YouTube description, a random forum, or a "free crack" site, it is almost certainly a security threat.

Search results for this specific filename often lead to "review" sites that use automated scripts to generate fake positive feedback.

The file "S140521.rar" appears to be a archive commonly associated with fraudulent websites, pirated software, or malware "scam-bait." Red Flags & Risks

Many download links for this file will force you to complete "human verification" surveys that never actually unlock the file but do steal your personal data.

If you still have the file, upload it to VirusTotal to see if major security engines flag it as malicious.

If you have already downloaded it, delete it immediately without opening it.

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.

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:

Public source code from day one.
Fully open source (MIT) after two years under our Functional Source License (FSL).

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 /year

Web based EPANET model
Background maps and satellite
Automated Elevations
No limits on sizes
Community Support

Launch epanet-js now

ProMost popular

For solo modelers and small utilities.$950 /year

Individual named license

Everything in free, and:

Scenarios
Professional support
Custom layers

Coming soon:

Cloud storage
Point in time restore - 30 days
Demand Analysis

Get Pro

Teams

For teams that build together.$2500 /year

Floating shared license

Everything in Pro, and:

Priority support
Volume discounts
Pay by invoice

Coming soon:

Team storage
Point in time restore - 90 days
Sharing of networks

Get Teams

Have questions? or book a call.

Special access for personal and educational use

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

Personal

$100/year

For curious minds and personal growth.

Everything in pro, but:

Community support only
Non-commercial usage

Buy personal access

Education

$0/year

Free for students and teachers.

Everything in pro, but:

Community support only
Non-commercial usage

Use your school email account

Frequently asked questions

Find answers to common questions about epanet-js.