Water Tank Sizing Guide for Nepali Households

Calculate the right overhead and underground water tank capacity based on household size and municipal supply reliability.

Estimate daily consumption

A typical Nepali household uses roughly 100-150 liters per person per day for planning purposes.

Account for supply interruptions

In areas with irregular municipal supply, size storage for 3-5 days of reserve rather than daily replenishment.

Split between overhead and underground

An underground tank plus overhead tank combination provides both storage capacity and adequate water pressure.

Plan for future household growth

Size tanks with some margin if additional floors or family members are anticipated within the next several years.

Use this in Build Mart Nepal

Turn the guidance into action by creating a project, loading a BOQ, matching local providers, issuing quotations and storing approvals in the Build Mart Nepal construction operating system.

Quick implementation checklist

• Define the required outcome and acceptance evidence.
• Assign an owner and target date.
• Record quotations, approvals and changes.
• Inspect completed work and retain handover records.