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Indoor Savings Calculator

Discover how much municipal water you can save annually by switching non-potable indoor uses to rainwater.

Potential Water Offset

By connecting your rainwater system to your toilets and laundry, your household can save up to:

0 Gallons / Year

This volume replaces treated municipal or well water, directly lowering utility costs.

Considerations for Indoor Use

Plumbing rainwater indoors requires careful planning to meet building codes and ensure safety parameters are met.

Dual-Supply Systems

A system that automatically switches to municipal water when your rainwater tank is depleted. Ensures your toilets always flush.

Backflow Prevention

Mandatory by code. Prevents collected rainwater from accidentally flowing backward and contaminating the public municipal water grid.

Pumps and Pressure

Indoor fixtures require standard house pressure. An on-demand pump paired with a pressure vessel ensures consistent flow to washing machines and toilets.