All Germs
Germs

Bacillus subtilis

UV doses per log reduction

30609011919.91D90 · 90 %39.82D99 · 99 %59.73D99.979.64DVGW 4-log99.5599.999 %119.4699.9999 %mJ/cm²LOG-REDUKTIONS-STUFE

Medium & classification

Water
Bacterial spores

UV resistance

Moderate

79.6 mJ/cm² are needed for 4-log reduction — classification for system sizing.