We work directly with Enterprise customers to complete vendor onboarding paperwork and support custom Purchase Order (PO) workflows.

Our Pro plan is designed to be completely self-service. By eliminating the administrative overhead associated with traditional, sales-driven procurement, we are able to pass those savings directly to you through lower subscription pricing. For Teams plans, we can assist with vendor forms and PO requirements depending on a minimum commitment of seats or contract years.

If you want to check your plan's eligibility or need standard company billing details to help fill out your internal forms quickly, email us or book a call.

epanet-js is a modern, web-based water network modeling tool based on the EPANET engine. It allows you to build, simulate, and analyze water distribution networks directly in your browser without installing any software.

Yes! epanet-js uses a local-first approach, meaning your project data is saved directly to your computer, not to our servers. This ensures your sensitive network data remains private and under your control. Learn more about the Local-First Approach.

No, you can start using epanet-js immediately without creating an account or logging in. Simply visit our website and launch the application to begin modeling.

Yes, epanet-js supports importing .inp files from desktop EPANET. You can seamlessly transition your existing projects to our web-based platform.

Yes! epanet-js works on all modern browsers including Chrome, Firefox, Safari, and Edge. Since it runs in a web browser, epanet-js works great on macOS, Windows, and Linux. This makes it a great option if you've had trouble installing traditional EPANET on a Mac. For the best experience, we recommend using the latest version of your preferred browser.

Yes, our source code is public from day one, but there's a two-year delay from the time we release a new version to when it becomes fully open source. This is how we drive sustainable open-source development for epanet-js, and, by extension, EPANET. You can learn more about why we're doing this and how the FSL license works here.

We offer different support options depending on your plan. Free users can access our community forums and documentation, while paid users receive priority email support. Educational users have access to specialized resources for classroom use.

We complete security questionnaires for our Enterprise customers.

Free, Pro, and Teams plans are self-service, and we expect your team to run its own internal security review. To make that as easy as possible, review our generic security questionnaire, with answers to the questions utilities and engineering firms have put to us before, so you can fill out your own internal forms quickly. If a question isn't covered, email us or book a call.

For a full overview of how we handle security and data privacy, see our security page.

epanet-js is built local-first. The browser acts as a secure runtime, much like a desktop operating system: when you load the app over HTTPS, the entire application, including the EPANET simulation engine compiled to WebAssembly, downloads to your browser cache and runs on your machine's own CPU and memory inside the browser sandbox, at near-native desktop performance.

Project files are read from and written to your hard drive or network drive through the browser's local file access APIs, and simulation results are saved locally. Neither your infrastructure data nor your customer data leaves your computer. It also saves bandwidth, since heavy model files are never streamed, uploaded, or downloaded. Once the page has loaded, you can disconnect from the internet entirely and keep working.

For a full overview of how we handle security and data privacy, see our security page.