You get your AC serviced. You get your car’s oil changed. But when was the last time anyone professionally evaluated whether your irrigation system is actually doing its job?
For most Sarasota homeowners, the answer is never. And that’s a problem — because an inefficient irrigation system is one of the biggest sources of unnecessary water use and unnecessary expense on a residential property.
What a Professional Irrigation Audit Includes
A thorough audit covers:
- Distribution Uniformity (DU) testing — measures how evenly water is distributed across each zone. A DU below 65% means large portions of your lawn are getting significantly more or less water than intended.
- Zone-by-zone flow rate measurement — identifies broken valves, partially open solenoids, or pressure problems that reduce system performance
- Head-to-head coverage verification — confirms that spray patterns overlap as designed and that no areas fall outside coverage
- Precipitation rate calculation — determines how long each zone actually needs to run to deliver the target amount of water (usually ¾ inch per application)
- Rain sensor and controller verification — confirms the sensor is interrupting cycles correctly and the controller is programmed to current restriction schedules
- Leak detection — includes a static pressure test to identify underground leaks between the meter and system
What Audits Typically Find
In Sarasota, the most common audit findings are:
- Spray heads and rotors mixed on the same zone (creating chronic over/under-watering)
- Run times set far too long for sandy soil (driving runoff and wasted water)
- Rain sensors that are non-functional or improperly positioned
- One or more zones with significantly reduced pressure from partial valve failures
- Controller schedules that haven’t been updated in years and no longer comply with current SWFWMD rules
How Much Water Can an Audit Save?
Industry data from the Irrigation Association suggests that professionally audited residential irrigation systems use an average of 15–30% less water than unaudited systems — and in cases with significant coverage problems, savings can exceed 40%. In Sarasota, with Phase 3 restrictions and current water rates, that translates to real money.
How Often Should You Get One?
The Irrigation Association recommends professional audits every 2–3 years for residential systems. In Sarasota’s conditions — sandy soils, high sun, significant seasonal variation, and active restriction enforcement — we recommend every 2 years.