Free Tool
What Does Your Sprinkler Really Cost?
Estimate your monthly irrigation water bill using real city water rates for the Dallas-Fort Worth area. See what you're spending now, what an optimized system would cost, and how much a smart controller could save you each year.
Water Cost Calculator
See what you're spending on irrigation — and how much you could save with an efficient system tuned to North Texas conditions.
Estimates based on historical ET data from Texas A&M AgriLife and Heath tiered water rates. Heath utility rates effective Oct 2025 (static estimate). Actual costs vary based on your specific system, soil type, and watering habits.
Data may not be accurate — please verify with your local water provider.
What This Calculator Does
This tool uses verified tiered water rate schedules published by North Texas municipalities alongside evapotranspiration (ET) data to estimate how much water your lawn actually needs each month. It then runs three scenarios side by side:
Current Usage
Your system running on a typical set-it-and-forget-it schedule.
Optimized Schedule
Same system, adjusted to match seasonal ET demand instead of a fixed timer.
Smart Controller
Weather-responsive watering that auto-adjusts daily based on real ET data.
Methodology
Water costs in DFW vary significantly by city. Plano, Frisco, and Allen all use tiered rate structures that penalize heavy usage, while smaller municipalities may have flat rates. Using the right city in the calculator gives you accurate numbers rather than a rough guess.
ET data reflects actual evapotranspiration demand across North Texas. During peak summer months, a typical DFW lawn may need significantly more irrigation than the same lawn in a cooler climate — the calculator accounts for this using local climate normals rather than national averages.
Cities We Cover
Water rates are specific to North Texas municipalities. The calculator includes verified rate data for all of the following DFW cities — select yours for accurate results.
Frequently Asked Questions
How accurate are the city water rates?
Rate schedules are pulled directly from North Texas municipality water departments. Tiered rates for cities like Plano, Frisco, and Allen are updated when municipalities publish new rate sheets.
What is evapotranspiration (ET)?
ET is the combined water loss from soil evaporation and plant transpiration. In DFW summers, high ET means your lawn needs more water — the calculator uses ET data to estimate how much your system should actually be running.
Why do rates vary so much by city?
Water costs in DFW vary significantly by municipality. Plano, Frisco, and Allen use tiered rate structures that penalize heavy usage, while smaller municipalities may have flat rates. Using the right city gives you accurate numbers rather than a rough guess.
Ready to Start Saving?
A smart controller installation or a seasonal tune-up from a certified irrigation auditor can pay for itself in one summer. See what options make sense for your system.
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