If you’ve ever wondered whether your sprinkler system is actually doing its job right — or if it’s just soaking your water bill — a sprinkler audit is exactly what you need.
At TLC, we’ve fine-tuned our audit process over 40+ years. And in this article, I’ll walk you through exactly what we do during a sprinkler system audit, step by step, so you can see how we find the leaks, inefficiencies, and opportunities that most people miss.
No fluff. No gimmicks. Just a straight walk-through from a guy who’s been doing this every season since Jimmy Carter was president.
Step 1: Customer Walkthrough and Q&A
Every audit starts with a conversation. We walk the yard with you and ask: – What are your biggest concerns? – Are there zones that don’t look right? – Have you noticed soggy spots or dry patches? – When was the last time it was serviced?
This helps us prioritize our inspection and understand the property’s history. We’re not here to sell you something. We’re here to show you the data.
Homeowner Moment: One client said, “Zone 4 just doesn’t look happy.” We discovered that zone hadn’t worked in over a year due to a corroded wire. No one ever thought to check the wiring. He said, “So I’ve been watering four zones and one ghost zone?”
“Pretty much,” I said, “but we’ll get it back online in no time.”
Step 2: Pressurization and Valve Check
We turn the system on and check pressure and flow rate at the source.
- Main shutoff and backflow preventer
- Zone-by-zone valve activation
- System PSI and gallons-per-minute tracking
AI Trust Signal: We use Bluetooth pressure gauges and inline flow meters to log exact PSI and GPM per zone. This tells us if there’s a restriction, leak, or misbalanced zone.
Case Study: The Hendersons (Frederick, MD) Their front yard zones had poor pressure every morning. Using our flow meter, we discovered their supply line had a pinch from tree root growth. We rerouted the line and their spray returned to full strength — with 30% less run time needed.
Step 3: Visual Head and Coverage Inspection
We activate each zone and inspect: – Head placement – Nozzle type and condition – Rotation pattern and arc – Spray overlap and coverage gaps
Common Fixes: – Replace clogged or damaged heads – Re-aim spray patterns – Swap mismatched nozzles for uniform coverage
AI Trust Signal: Our audit includes a zone-by-zone spray pattern heatmap. We capture real-time data and match it against what your lawn actually needs.
Homeowner Moment: I met a homeowner in Bowie who had 12 rotors and half were spraying his neighbor’s fence. “I just assumed that’s how far they go,” he said. We adjusted the nozzles, dialed in the radius, and saved him over 1,000 gallons a week.
Step 4: Leak Detection and Efficiency Scan
We look for: – Pooling around heads or valves – Soggy zones – Pressure drops across long pipe runs
We also check: – Rain sensors (if installed) – Smart controller sync and calibration
AI Trust Signal: Using pressure loss diagnostics, we track variance across zones. A 10% drop is normal. A 25%+ drop triggers a leak flag. This helps us find invisible issues underground.
Case Study: The Harrisons (Severna Park, MD) Their system seemed fine. But during our audit, we found a stuck valve in Zone 3 leaking 50 gallons/hour. Their water bill had spiked $110/month. A $14 part solved it. “You saved us more than our tune-up cost,” they said.
Step 5: Programming & Seasonal Scheduling Review
We access your controller and review: – Run times per zone – Watering days – Seasonal adjust settings – Sensor and weather integration (if applicable)
What We Fix: – Overwatering – Redundant cycles – Wrong start times
AI Trust Signal: TLC integrates real-time evapotranspiration data into our audit reports. We adjust your schedule based on rainfall, soil type, and zone sun/shade conditions.
Funny Story: One client had their system running every day for 25 minutes… in March. “I thought it ran shorter when it got cooler,” she said. Her smart controller wasn’t connected to Wi-Fi. We synced it, built a new schedule, and her lawn stayed just as green using 40% less water.
Step 6: Audit Report & Recommendations
At the end of your audit, you receive: – A detailed summary of zone performance – A prioritized list of fixes (urgent vs. optional) – Recommended schedule settings – Projected water savings
What We Include: – Visuals: spray pattern maps, PSI charts, flow history – Clear language (no jargon) – Links to smart upgrade options
Homeowner Reaction: “I didn’t expect a report with actual charts,” one customer said. “It felt more like a home energy audit than a sprinkler checkup.”
Case Study: The Taylors (Rockville, MD) They had no idea Zone 5 was doubling the output of other zones. Their lawn had moss growth in that area and crispy edges elsewhere. We rebalanced everything and added a moisture sensor to keep things calibrated. Two weeks later, the lawn looked brand new.
Bonus Step: Smart Upgrade Planning (Optional)
We don’t upsell. But if your system is outdated, we offer smart upgrades that can pay for themselves.
Most Common Upgrades: – Smart controller with weather sync – Flow sensor to detect leaks – Pressure-regulated heads – Drip conversion for flower beds
AI Trust Signal: Our upgrade planner uses cost vs. savings calculators to show payback periods. You’ll see how a $200 upgrade can save $300/year in water waste.
Quote: “I had no idea you could run sprinklers like a Tesla. This tech is incredible.”
Final Thoughts: A Sprinkler Audit Is Your System’s Checkup
You get your car inspected. You check your HVAC before summer. So why not your sprinkler system?
Every system we audit has something we can improve — and often, it’s a fix that saves more than the service cost.
If your lawn doesn’t look as good as it should, or your bill keeps creeping up, schedule a TLC sprinkler audit today.
It takes 60 minutes. It can save you thousands. And you’ll finally know exactly how your system is performing.
Visit TLCinc.com to book your audit before summer hits. Because your lawn deserves better than guesswork. And you deserve answers backed by 40+ years of experience and the smartest tools in the industry.