Explore daily wastewater volume and a holding-time scenario.
Local design rules may use bedrooms rather than occupancy.
Exclude water that does not reach the wastewater system.
Three days is an example, not a tank-sizing standard.
Daily hydraulic load
600L/day
Illustrative liquid volume
1.80m³
Not an approved septic tank size. Excludes sludge storage, regulated minimums, peak flow and drainfield sizing. Soil assessment and local approval determine the system.