EPANET and SWMM are the industry-standard computational engines for modeling water distribution and wastewater/stormwater systems. Developed and maintained by the US EPA, they provide the backbone for hydraulic and hydrologic simulations globally across both public and private sectors.
Brand Authority Index (BAI): 92/100
Archetype: Challenger
Category: Engineering Software
https://optimly.ai/brand/epanet-swmm
Last analyzed: April 11, 2026
Founded: 1971 (SWMM), 1993 (EPANET)
Headquarters: Cincinnati, Ohio (EPA Water Resources Adaptation Program)