Irrigation & Water
Water Cost Calculator
Calculate irrigation water costs based on volume and water price.
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How to Use This Calculator
Enter the total water volume you plan to use in gallons and the price per 1,000 gallons from your water supplier or estimated pumping cost. Optionally enter your field size to see cost per acre. The calculator shows total cost and acre-inches applied.
Why This Matters
Water is often the second-largest variable cost in irrigated agriculture after fertilizer. Knowing your exact cost per acre-inch helps you compare irrigation methods, justify efficiency upgrades, and budget accurately for the growing season.
Methodology
Total cost = (Gallons / 1,000) × Price per 1,000 gallons. Cost per acre = Total cost / Acres. Acre-inches = Gallons / 27,154. Municipal water typically costs $2-8 per 1,000 gallons, while well water pumping costs $0.50-2.00 per 1,000 gallons.
Common Mistakes to Avoid
- Forgetting to include electricity or diesel pumping costs for well water.
- Not tracking water use by field — some fields may cost far more to irrigate than they return.
- Ignoring seasonal rate increases from municipal water suppliers during peak demand.
- Failing to factor in water cost when comparing drip vs sprinkler system investments.
Tips & Best Practices
- Municipal water costs $2-8 per 1000 gallons.
- Well water costs $0.50-2.00 per 1000 gallons (pumping only).