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

https://express-code-inspected-water-damage.tearosediner.net/incomplete-drying-documentation-causes-insurance-claim-rejections-during-water-damage-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