What irrigation repair actually involves
Irrigation repair covers everything that can go wrong with an existing sprinkler system: heads that won’t pop up or won’t shut off, zones with low or no pressure, valves that stick or leak, controllers that misfire, broken pipe under the lawn, and end-of-season problems like cracked backflow preventers from missed winterization. We service systems we installed and systems we didn’t. Most repairs are handled in a single visit.
What broken sprinkler systems look like
Most homeowners notice something is off before they call. The signs below are the ones we hear about most often.
A zone won’t run or runs weak
Dry patches that line up with one specific zone usually mean that zone has a valve, wire, or head problem. The lawn tells you which zone before the controller does.
Heads not popping up, or popping up and staying up
Stuck heads are almost always seal or debris issues at the head itself, sometimes with grit that got into the line during install or repair. Heads that don’t retract waste water and get destroyed by lawn mowers within a season.
Water bubbling out of the ground when zones run
Pipe is leaking somewhere on the run, usually at a fitting. Bubbling water near a head means the riser broke; bubbling between heads means the underground pipe is compromised.
Overspray onto pavement, siding, or windows
Head arcs have drifted out of position. Common after a lawn mower clip, after the soil settled and tilted a head, or just from years of cumulative drift. Easy fix and a big water-bill win.
Controller showing errors or running odd schedules
Controller battery dead, programming corrupted after a power surge, a zone wire shorted, or a sensor disconnected. Modern smart controllers can diagnose much of this themselves, but the fix usually still requires a tech in person.
System won’t start in spring
Backflow preventer cracked from a missed winterization, master valve stuck closed, controller power lost over the winter, or pipe damage from a freeze. Spring startup is the most common service call we run, and the most important to schedule before peak summer.
Backflow preventer leaking or dripping
Common after freeze damage. Backflow preventers are a maintenance and safety component, not optional, and they must be repaired promptly to remain code-compliant and to protect drinking water.
Brown patches that no schedule change will fix
When watering schedule adjustments don’t bring an area back, the system isn’t delivering water there. Could be a clogged head, an out-of-spec arc, a low-pressure zone, or a broken line. A diagnostic visit usually identifies the cause on the first call.
What we fix, what we tune, and what we service
We repair sprinkler systems regardless of who installed them. The scope below covers the bulk of what comes up.
Diagnostic visits
On-site evaluation of the symptoms you’re seeing, with each zone tested under pressure, controller programming reviewed, valves inspected, and backflow preventer checked.
Sprinkler head replacement
Broken risers, stuck heads, mower-damaged fixtures, and heads that have lost their seal. We carry Hunter, Rain Bird, and Toro heads in common sizes on the truck and match the original spec or upgrade if there’s a reason to.
Valve repairs and replacement
Diaphragm replacement, solenoid replacement, and full valve swaps when the housing has failed. We carry common valve sizes stocked.
Controller troubleshooting and replacement
Programming diagnostics, sensor checks, surge damage assessment, and full controller swaps when the unit has failed. We upgrade older units to Hunter Hydrawise smart controllers if requested, which usually pays back through water savings.
Leak detection and pipe repair
Locating leaks under sod, repairing fittings, and replacing failed pipe runs. We hand-dig around the area to minimize lawn impact.
Wiring repairs
Tracing zone wires, finding nicks and breaks, and re-running wire when the original line is no longer serviceable.
Spring activation and fall winterization
Seasonal services that prevent the most expensive repair categories. Spring activation pressurizes the system, checks all zones, and programs for the season. Fall winterization blows water out of lines, valves, and the backflow preventer before the first hard freeze.
Annual backflow testing
Required annually in most St. Louis municipalities. Our certified backflow inspectors handle both the test and the paperwork submission. More on backflow testing
What a service call actually looks like
Most St. Louis homeowners have only had a sprinkler repair company out a few times in their life. Here’s how ours runs.
1
Booking and scheduling
Call our office during business hours and a real person picks up. We book you into a service window, typically same-week during regular season, or sooner if you’re a member or the issue is urgent. You don’t have to be home for most repairs, but it helps for the initial diagnostic.
2
Day of service
Your technician calls 30 minutes before arrival. They show up in a marked, radio-dispatched van stocked with the parts most likely needed for your reported issue. They’re uniformed, background-checked, and drug-tested. Saturday service is available at no extra charge.
3
Diagnostic
The tech walks the property with you to confirm what you’re seeing, runs each zone manually from the controller, and identifies the root cause. Most diagnostics finish well under an hour.
4
Repair in the same visit when possible
Because our vans are stocked, the majority of common repairs are completed during the same visit: head replacements, valve diaphragm swaps, controller reprogramming, leak repairs, wiring fixes. If the part needed is something less common, we order it and schedule a return visit.
5
Final test and walkthrough
Before we leave, every zone is run again to confirm the issue is resolved. We show you what was wrong, what we did, and what you should watch for. You receive an itemized invoice on the spot.
When repair makes sense, and when replacement is smarter
Not every old irrigation problem is worth repairing. Sometimes the system has reached the end of its useful life and replacement is the better investment. The diagnostic visit is when we tell you that honestly.
- Most zones still work properly; the issue is limited to specific components
- Pipe is properly sized and intact
- Backflow preventer is functional and code-compliant
- Controller can be upgraded or reprogrammed
- Total repair cost is well under what a replacement would be
- Multiple zones are failing for different reasons
- Pipe is undersized for the property and causing chronic pressure issues
- System uses friction-fit fittings or thin-wall pipe that will keep failing
- Repairs in the last two years have added up to half the cost of a new install
- Landscape has changed enough that the original zone layout no longer matches the property
We don’t upsell replacement when repair makes sense. Many of our customers come to us specifically because another company quoted a full system replacement when a small repair would have solved the actual problem.
How irrigation repair pricing works
Repair cost varies more than installation cost, because every system is different and every problem has its own scope. Here’s how we quote, and the main things that drive cost.
Service call fee, then itemized parts and labor
Most repair visits start with a service call fee that covers the diagnostic. After diagnosis, you receive an itemized quote for parts and labor before we proceed. Members get reduced service call rates.
What drives the price
- How quickly the problem can be diagnosed
- Whether the fix is a stocked part on the truck or requires special order
- Whether the work involves digging (and how much landscaping is affected)
- Whether the repair is a small swap or a multi-component rebuild
- Whether the system needs reprogramming after the repair
- Whether you’re a service member (members receive parts and labor discounts plus reduced service call fees)
Why members save
Our service membership program builds the cost of routine maintenance into a predictable annual fee and discounts every repair beyond that. For homeowners who run the math, the membership usually pays for itself the first time something needs attention during the peak season.
Compare membership tiers and pricingWhy St. Louis homeowners use us for sprinkler repair
Green Turf has been repairing irrigation systems in the St. Louis metro since 1976. More than 380 five-star Google reviews. Office staff and service technicians have long tenure with the company.
Stocked service fleet, single-visit fixes
Our radio-dispatched service vans run across the metro, each stocked with the heads, valves, controllers, and fittings that come up on most repair calls.
Technicians who’ve seen every common failure mode
Our service techs have multi-year tenure at Green Turf and decades of experience in the irrigation trade. That depth shows up in diagnostic speed. They’ve seen the same failure modes hundreds of times and know where to look first.
Honest assessment, not a sales pitch
We tell you what’s actually wrong and what it costs to fix. If a quick fix solves it, we do the quick fix. If replacement makes more sense, we say so.
Real people answering the phone
Staffed office year-round during business hours. Your technician calls 30 minutes before arrival.
Licensed, certified, and accredited
- Missouri State and St. Louis County certified
- Certified backflow inspectors on staff
- BBB accredited
- Fully licensed, bonded, and insured
Frequently asked questions about irrigation repair
How much does a sprinkler repair cost in St. Louis?
Most repairs combine a service call fee with itemized parts and labor. Simple repairs like a head replacement or controller reprogramming land at the low end. Multi-component rebuilds or leak repairs that require digging are higher. We quote before we begin work after the diagnostic, so you see the number before approving.
Do I have to be home for the repair visit?
Not for most repairs. We need access to the controller, the backflow preventer, and the zones in question. If you’re not home, we ask that the controller is accessible and that we have a way to reach you by phone for the diagnostic findings before we proceed.
How fast can you come out?
Most non-urgent calls are scheduled within the same week during regular season. Members get priority scheduling. During peak periods like spring activation or the first heat wave of summer, response can take longer for non-members. Critical issues like active leaks or backflow failures are prioritized.
Will you service a system you didn’t install?
Yes. We regularly service systems that were installed by other companies. We work on Hunter, Rain Bird, Toro, and most major brands. We don’t require that you switch to us for ongoing service if you don’t want to.
Can you upgrade my old controller to a smart controller?
Yes. Hunter Hydrawise smart controllers are a common upgrade. The new controller talks to your phone, adjusts watering based on weather, and alerts you if a zone draws abnormal flow. In most cases, no other system changes are required.
My system worked last fall but won’t come on this spring. What happened?
Most spring no-start issues trace to one of three things: a cracked backflow preventer from missed or incomplete winterization, a stuck master valve, or controller power lost over the winter. A spring activation visit diagnoses and resolves the majority of these in a single appointment.
Do you offer emergency service?
Yes. We have a 24-hour emergency service line at (314) 739-0410. Active water emergencies, like a stuck valve flooding a yard or a leak you can’t shut off, get dispatched as quickly as we can route a technician.
How do I prevent expensive repairs in the future?
Annual maintenance prevents the great majority of expensive failures. Spring activation, fall winterization, mid-season checkups, and annual backflow testing catch problems while they’re small. Our service membership bundles those visits and adds priority scheduling plus repair discounts.
Our other irrigation services
Repair is one piece of what we do. For most clients, it’s the entry point into a longer relationship that covers installation, ongoing service, and seasonal care.
Irrigation System Installation
Custom CAD-designed sprinkler systems for new properties, replacements of failed older systems, and additions to existing installs. In-house design, in-house crews, and as-built documentation handed off at the end of every job.
Learn More
Irrigation Service Memberships
Annual programs that bundle spring activation, winterization, backflow testing, mid-season walk-throughs, priority scheduling, and discounts on every repair. Tiered options to fit different levels of coverage.
Learn More
Backflow Testing
Annual certified backflow testing for code compliance with your local water utility. Available as a standalone service or included with membership.
Learn MoreGreen Turf Customer Testimonials
Over 500 ⭐⭐⭐⭐⭐ reviews can’t be wrong!
✨Green Turf is consistently praised for reliable, professional irrigation service delivered by knowledgeable technicians who genuinely care about their customers and their systems. St. Louis homeowners repeatedly highlight prompt response times, clear communication, thorough workmanship, and long-term dependability.
Schedule your irrigation repair today
If a zone isn’t firing, a head is broken, your controller is acting up, or you’ve got a leak you can’t track down, we can help. Our fully stocked service vans cover the entire St. Louis metro, and most repairs are diagnosed and fixed in a single visit. No second appointments, no waiting on parts.
