💧 Free Off-Grid Utility

Rainwater Catchment & Storage Calculator

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Enter your ZIP code and catchment footprint to pull local rainfall records, calculate harvestable gallons, and determine off-grid tank reserves[cite: 2996, 3353, 3386].

5-Digit US ZIP Code:

Roof / Catchment Area (Sq Ft):

Roof Material:

Drought Buffer Target:

Fetching local rainfall records from weather database...

🔒 Your Custom Water Blueprint is Ready!

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Enter your email below to unlock your water harvesting report on-screen and download your printable PDF[cite: 3391, 3392].

🔒 We respect your privacy. [cite_start]No spam ever[cite: 3393].