Water storage sizing
Daily demand and reserve volumes by site type, head-count, occupancy, risk appetite and supply bottleneck. Defaults are editable — pick a profile, then adjust.
Daily demand
18,900L / day
= 18.9 kL·18.9 m³
Full-time 18,200 + part-time 700 L/day
Reserve required
56,700L
= 56.7 kL·56.7 m³
3-day reserve at full demand
Supply margin
0.529×of demand
Bottleneck (treatment) at 10,000 L/day is below daily demand of 18,900 L/day. Site cannot sustain demand.
Reserve split by bottleneck
Raw water tank reserve
18,900L
= 18.9 kL·18.9 m³
Source faster than treatment — raw tank as operational buffer only.
Clean water tank reserve
37,800L
= 37.8 kL·37.8 m³
Treatment is the bottleneck — clean tank holds the bulk of the reserve.