Observed arrival · 2026-09-07

Not EPANET: Honest Water Network Modeling

not-epanet.org Observed source

Editorial interest 85/100 Selection signal · not a rating of the site

A free, browser-based water network editor that draws, solves, saves, and exports EPANET-compatible models.

Landing page captured for the 2026-09-07 issue.

Field notes

The application places a drawing surface over a browser-loaded 679 KB build of OWA-EPANET 2.3.5, using that engine for extended simulation, water quality, pump energy, controls, and valve behavior. Its file workflow preserves EPANET .inp compatibility while using JSON for scenarios, saved profile paths, map context, and view state. The project reports a Net3 validation comparison covering 2,425 head values over 25 reporting steps, with agreement to 0.005 ft.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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