Observed arrival · 2026-09-07

Not EPANET, a Water-Modeling Tool With Receipts

notepanet.org Observed source

Editorial interest 87/100 Selection signal · not a rating of the site

Not EPANET points water-network engineers to a free, browser-based editor built on the open EPANET engine.

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

Field notes

The project places a browser drawing surface over a 679 KB on-demand build of OWA-EPANET 2.3.5, allowing users to map a looped pipe network, solve it, and exchange EPANET .inp files. It also uses JSON for project details that .inp cannot carry, including scenarios, map context, view state, and multiline labels. The page reports comparison against EPA's Net3 example across 2,425 head values and 25 reporting steps.

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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