Water Savings Calculator (GTG Signature)

Estimate water use and savings across household, garden, and community modes. Compare systems, calculate gallons + cost saved, and generate a GTG Water Efficiency Score (0–100). Educational tool — not engineering or agronomic advice.

Estimate and compare

Select a mode, enter a few simple inputs, and get an instant water + savings estimate (saved locally).

Educational note: Water needs vary by climate, soil, plant type, wind, mulch, irrigation uniformity, and system maintenance. GTG overlays are directional and designed for planning comparisons.
🌱 Garden (compare irrigation)
🏠 Household (fixtures + lawn)
🌍 Community (project scale)
Garden mode is the GTG core (systems comparison). Household and community are optional overlays.
Enter area in square feet.
Used to annualize garden totals.
Higher demand increases baseline irrigation.
Affects gallons and “water per lb” estimate.
Mulch reduces evaporation (savings).
Adds small efficiency boost.
Use this as your “current” or baseline system.
Compare A vs B to see savings potential.
Used only for an educational cost-savings estimate.
System A weekly
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System B weekly
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Savings
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Saved locally with your settings (no server).
GTG water score
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Water saved
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Percent saved
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Cost saved
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Baseline vs upgrade
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Equivalencies
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Top recommendation
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GTG Water Efficiency Meter: —
0–29 Inefficient 30–49 Improving 50–69 Efficient 70–84 Water Smart 85–100 Regenerative Grade
Overview
Details
Method
Grant-ready
Your overview
Adjust inputs to see savings.
GTG note
Water control is the highest leverage upgrade for gardens and communities.