Observed arrival · 2026-09-07
Not EPANET, on purpose
A free, browser-based water-network modeling tool that draws, solves, and exports EPANET files without pretending to be EPANET.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Field notes
The project places a drawing surface over a browser build of OWA-EPANET 2.3.5 and uses the EPANET interchange format for import and export. It distinguishes JSON project files from .inp files so scenarios, profile paths, map imagery, view state, and multiline labels are not lost. The page also reports validation against EPA's Net3 example: 2,425 head comparisons 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
One card from the complete issue