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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provides the industry-standard guide for identifying and mitigating these types of risks. Are you researching this for website security testing or are you looking for best practices in PHP development parse_url - Manual - PHP
25 Killer Combos for Google's Site: Operator (6 with "inurl")
The phrase inurl:index.php?id= is a well-known Google Dork—a specific search string used by security researchers and ethical hackers to identify potentially vulnerable websites. Specifically, this string targets websites running on PHP that use URL parameters to fetch data from a database, which is a common setup for SQL Injection (SQLi) vulnerabilities. Exploit-DB 1. What the Dork Reveals When you search for inurl:index.php?id= , you are looking for pages where: : The primary script file for a website.
variable is taken directly from the URL and placed into the database query, a user can manipulate the query itself. Modern development requires using prepared statements to prevent this. Stack Overflow 3. Ethical and Legal Context Searching for these strings is a common part of Vulnerability Research Bug Bounty Exploit-DB Security Testing
: It identifies websites that rely on database-driven content. Vulnerability Scanning
: Attackers often look for these URLs because they are classic targets for SQL Injection (SQLi)
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? Send us an email 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.
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.
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now