Response-time standards reveal the 24-48 hour window for microbial colonization after flooding

https://express-home-near-savealot.readspirex.com/posts/what-happens-during-the-first-72-hours-of-water-damage-drying-and-recovery

Mold grows remarkably fast after a flood, and response-time benchmarks from the IICRC S500 standard establish that microbial colonization can begin within 24 to 48 hours of water exposure