epanet-js

Sicher B2 Vk

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  • Classic EPANET is powerful — but clunky and outdated.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.

Old EPANET UI
Complex Modeling App

Sicher B2 Vk

To pass "Sicher B2 VK," you must understand how the exam differs from the general test. The format remains similar, but the content shifts entirely to the business world.

| Day | Task | Time | | :--- | :--- | :--- | | Mon | Chapter 1: Reading & Vocabulary (Focus on new nouns + articles) | 45 min | | Tue | Chapter 1: Listening + Grammar (Temporale Präpositionen: vor, nach, während) | 45 min | | Wed | Writing: Use the topic from Chapter 1 to write a For/Against essay (150 words). | 30 min | | Thu | Speaking: Record yourself discussing the Chapter 1 topic for 2 minutes. | 20 min | | Fri | Exam Simulation: Do the "Testtraining" section at the end of the chapter. | 60 min | | Sat | Correction: Compare your writing to the solution book (Lehrerhandbuch). | 30 min | sicher b2 vk

In the landscape of German language learning, the transition from the B1 level (intermediate) to B2 (upper-intermediate) is notoriously difficult. It is often described by instructors as the "longest mile" in language acquisition. This is the gap that Sicher! B2 VK (Vorbereitungskurs) aims to bridge. To pass "Sicher B2 VK," you must understand

Published by Hueber, one of the leading names in German language materials, the Sicher! series is a staple in Goethe-Institut classrooms and private language schools across the German-speaking world. While the main Sicher! B2 coursebook is designed for exam preparation, the VK (Vorbereitungskurs) edition serves a distinct, foundational purpose. Spezifische berufliche Kompetenzen:

Das Thema „sicher B2 VK“ bezieht sich plausibel auf die Vorbereitung auf das GER-Niveau B2 in der deutschen Sprache mit dem Ziel, sichere Kenntnisse für eine Prüfung oder für den Verkauf/Vertrieb (VK = Verkauf/Vertrieb) zu erreichen. Ich nehme hier die Annahme: Ziel ist, sichere B2-Kompetenz sowohl allgemein sprachlich als auch spezifisch für Verkauf/Vertriebs‑Kontexte zu entwickeln. Dieser Essay bietet eine strukturierte, dynamische Anleitung: Lernziele, Kompetenzbeschreibung, methodischer Lernplan, prüfungsrelevante Fertigkeiten, Fachvokabular für Vertrieb, typische Aufgabenformate, Beurteilungs‑ und Übungsstrategien sowie Anpassungen für verschiedene Lernstile.

Passing requires more than just knowing grammar rules; it requires strategic preparation.

  • Spezifische berufliche Kompetenzen:

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

    Just open your browser and model.

    No install. No login. No cloud required.

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    Why we built epanet-js

    Luke Butler - Co-founder
    Luke ButlerLinkedIn

    Co-founder

    Sam - Co-founder
    Sam Payá LinkedIn

    Co-founder

    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