Irrigation Maintenance & Seasonal Tune-Ups

Irrigation systems do not fail all at once. They degrade. A nozzle wears, a head settles an inch, a rotor slows, a splice corrodes, the schedule drifts further from the season, a screen fills with grit. Each of those is trivial on its own, and together over five years they turn a system that covered the lawn evenly into one with dry patches, runoff and a bill nobody can explain.

Maintenance is the work that interrupts that drift. It is not the same as repair — repair is what you call for when a zone is dead. Maintenance is the visit where the zone that was about to die gets caught.

There are three natural points in the North Georgia year: spring startup when the system is pressurised and winter damage surfaces, mid-season when the schedule needs adjusting to real heat, and late fall when the system is shut down and protected before the first hard freeze.

Symptoms homeowners notice

• The system has never been serviced since it was installed
• Dry patches that keep coming back in the same places
• Water bills creeping up year over year
• Heads that spray unevenly, mist, or water the sidewalk
• Run times that have not changed in years
• A system about to be pressurised for the first time since fall
• A first hard freeze forecast and the system still charged
• Rotors turning more slowly than they used to
• A commercial property where landscape appearance matters
• You would rather schedule service than wait for a failure

The most likely causes

• Nozzle and seal wear. Nozzles erode and wiper seals harden with use. A worn nozzle throws a distorted pattern; a failed seal lets water spurt around the stem instead of out the nozzle.
• Heads settling and being buried. Soil settles, thatch builds and mulch gets topped up. A head an inch low sprays into grass instead of over it.
• Grit and scale accumulation. Filters, screens and nozzles collect debris over seasons, restricting flow and distorting patterns.
• Schedule drift. A program correct for May is wrong for August and badly wrong for October. Without seasonal adjustment the system either wastes water or underwaters.
• Freeze damage to exposed parts. Heads above grade, risers, shallow valves and above-ground backflow assemblies are what North Georgia freezes actually break.
• Splices corroding in wet boxes. Valve boxes in clay hold water. Splices degrade slowly and fail eventually, usually in mid-season when the system is needed.
• Landscape change outpacing the system. New beds, new patios, maturing trees and replaced sod all change what the system needs to deliver, while the heads stay where they were.
• Small leaks going unnoticed. A weeping valve or a cracked fitting loses water continuously and quietly. Maintenance visits are where the meter test catches it.

How a technician diagnoses it

• Maintenance visits are structured around the season, because what needs checking in March is not what needs checking in November.
• At spring startup the priority is finding winter damage before the system is fully pressurised. We open the isolation valve slowly rather than all at once, because a sudden charge of a dry mainline is what turns a hairline freeze crack into a burst. Then every zone is run and watched for the things freezes break: cracked heads and risers, split backflow components, weeping valves. The schedule is rebuilt for spring conditions, not last August’s.
• At mid-season the focus is coverage and schedule. Heads are checked for alignment, arc and grade, nozzles replaced where worn, run times scaled to real heat, and cycle-and-soak timing confirmed so clay soil actually absorbs what is applied.
• At fall shutdown the focus is protection. The controller is set off or to a rain-delay state, water is isolated, and vulnerable above-grade components are protected. North Georgia does not require the aggressive full-system blowouts a northern climate does, but exposed backflow assemblies, above-grade valves and shallow components genuinely do crack here, and insulating or draining them is cheap compared with replacing them.
• Any visit includes a meter test with everything off, because it is the fastest way to find water escaping that nobody has noticed.

What the repair involves

1. Pressurise carefully (spring). The isolation valve is opened slowly so a dry mainline is not shock-loaded. Freeze cracks reveal themselves without being made worse.
2. Run and watch every zone. Each zone operated individually with every head observed through a full cycle.
3. Adjust heads and nozzles. Arcs reset, sunk heads raised, misaligned heads squared up, worn nozzles replaced, pavement overspray corrected.
4. Clean filters and screens. Inlet filters, valve screens and head screens cleared of grit and scale.
5. Inspect valves and wiring. Boxes opened, standing water and corrosion noted, questionable splices redone with waterproof connectors before they fail.
6. Meter test. Everything off, controller off. A moving meter means continuous loss upstream of the valves.
7. Reprogram for the season. Run times, start times and cycles rebuilt for current conditions, inside the Georgia 4 p.m. to 10 a.m. watering window.
8. Winterize (fall). Controller set off, water isolated, exposed backflow and above-grade components drained or insulated ahead of the first hard freeze.
9. Report and recommend. What was adjusted, what was replaced, and what should be watched or repaired before next season.

What affects the cost

Maintenance pricing is driven by system size and by how much correction the system needs on the first visit.

• Number of zones and number of heads
• Property size and distance between zones
• Whether this is a first visit on a neglected system or ongoing scheduled service
• How many nozzles, seals and minor parts need replacing
• How many heads need raising or realigning
• Whether valves and the controller are accessible or need locating
• Residential versus commercial site, and whether multiple controllers are involved
• Whether spring startup, mid-season tune-up and winterization are scheduled together or individually

For published rates and general North Georgia market ranges by repair type, see the Georgia irrigation repair cost guide.

Does this repair require digging?

Routine maintenance needs no excavation. Adjustments, nozzle changes, filter cleaning, reprogramming and winterization are all surface or at-the-wall work.

The one routine exception is raising heads that have sunk or been buried, which means digging them out by hand — a trowel-sized hole per head, backfilled and the turf pressed back. Anything larger, such as a leak or a wire break found during the visit, is identified and estimated as a separate repair rather than being absorbed silently into a maintenance call.

How long does it take?

A seasonal tune-up on a typical residential system usually runs one to two hours, since every zone is operated and every head checked. Winterization on a North Georgia system is considerably quicker than the full blowout a northern climate requires.

The first visit on a system that has gone years without service takes longer than subsequent ones, simply because there is a backlog of adjustment to work through. After that, scheduled visits get shorter because the system stays in adjustment. Commercial sites are quoted individually.

Should the water be shut off?

Winterization involves deliberately shutting the water off at the irrigation isolation valve, and that is part of the service. We will show you where it is, because knowing that location is the difference between losing ten gallons and losing ten thousand when something bursts.

During spring startup the isolation valve is opened slowly and deliberately rather than thrown wide, and it stays under our hand until the system is confirmed holding pressure. If a maintenance visit finds a leak, we close the isolation valve, tell you it is closed, and leave it that way until the repair.

Will leaving it alone raise the water bill?

Maintenance is where the bill gets addressed, because the most common causes of a creeping water bill are exactly the things maintenance corrects.

Worn nozzles and misaligned heads put water on pavement. Sunk heads spray into turf instead of over it, so people extend run times to compensate and over-water everything. Schedules left at peak-summer settings run through mild months. Clogged screens distort patterns so coverage fails and run times get pushed up again. A weeping valve loses water around the clock, and a meter test during a routine visit is usually how it gets found.

None of that is visible from a window. It accumulates, it costs money every cycle, and it gets fixed in an hour or two by somebody standing in the yard watching the system run.

North Georgia considerations

Spring startup timing in North Georgia usually lands in March or early April, once the risk of a hard freeze has passed but before warm-season turf needs consistent water. Starting too early risks re-freezing a pressurised system; starting too late means the lawn is already stressed. Watching the forecast rather than the calendar is the right approach, and the practical rule is to wait until overnight lows are reliably above freezing.

Winterization here is a different job than in a cold climate. North Georgia freezes are usually short and shallow, so properly buried pipe generally survives, and full compressed-air blowouts are less commonly necessary than they are further north. What does break are exposed components: above-grade backflow assemblies, risers, shallow valves and heads sitting proud of grade. Isolating the water, draining or insulating those exposed parts, and shutting the controller down is what protects a system through a Georgia winter. Where a system has above-ground piping or a history of freeze damage, a more thorough drain-down makes sense.

The Georgia Water Stewardship Act frames every schedule we set: landscape watering with publicly supplied water is permitted only between 4 p.m. and 10 a.m., any day of the week, with private wells and reuse water exempt. Individual utilities may add restrictions, so it is worth checking with your own provider. On Piedmont clay with any slope, run times are split into shorter cycles with soak periods, since a single long run produces runoff before the root zone is wet.

Frequently asked questions

Related services

Where we do this work

Irrigation Medics covers Hall County and the Lake Lanier communities, the Gwinnett corridor through Duluth, Suwanee and Buford, and North Fulton and Forsyth. Rates are the same everywhere — see the full service area.