Irrigation is easy to forget because it runs while everyone is asleep. When it is working, nobody thinks about it. When it is not, the first sign may be a strange water bill, a brown strip along a building or a resident emailing a photo of a walkway under water at dawn.
Most commercial irrigation problems do not arrive suddenly. They build slowly over a season, out of sight, while the system keeps running on an old schedule. For a property manager, the goal is not to become an irrigation technician. It is to know what to look for, what to ask and when a small issue is about to become a costly one.
The water bill is your best early warning
A property's water use follows a pattern. If you compare the same month across years, you will usually see a normal shape: low in winter, climbing through summer and falling again in fall. A sudden jump outside that pattern deserves a look.
An underground leak can run for weeks without showing on the surface, especially in sandy or well drained soil. A stuck valve can water one zone around the clock. A controller reset by a power outage can return to a default program that waters far more than it should.
Make it a habit to review water use each month during the irrigation season. If the number looks wrong, ask for the system to be checked before the next bill arrives, not after.
Dry spots usually have a mechanical cause
When a patch of lawn turns brown, the natural response is to add more water to the whole zone. That usually makes things worse. It overwaters everything else while leaving the original problem in place.
Dry areas often come from one of a few causes:
- A head that has been knocked out of alignment by a mower or vehicle
- A clogged nozzle
- Plant growth blocking the spray over the years
- A head that has sunk below the turf
- Low pressure from a leak elsewhere in the zone
- A bad valve that is not opening fully
Each of those has a specific fix. A technician walking the zone while it runs will usually find the cause faster than any schedule change would.
Soggy spots and overspray cost you twice
Too much water is as common as too little. Constantly wet turf encourages moss and weeds, weakens roots and makes for ruts under mowers. Water hitting a building can stain siding and sit against the foundation. Spray across a sidewalk or parking lot wastes water and leaves a slippery surface where residents and tenants walk.
Take a look early one morning during a watering cycle. It only takes a few minutes, and it reveals things a daytime inspection never will. Note any heads that spray pavement, walls or windows, any water running into the street and any areas that never seem to dry out.
The controller is probably out of date
Many systems run on a program set years ago by someone who has since left. Plantings have changed, trees have grown and shade has moved, yet the controller keeps doing the same thing. In western Washington the difference between a cool June and a dry August is large, so one fixed schedule rarely fits the whole season.
Ask these questions about your controller:
- Who has access to it, and who last changed the program?
- Does the schedule change through the season?
- Do the zones match a current map?
- Is there a rain or moisture sensor, and does it work?
- What happens to the program after a power outage?
If nobody can answer, that alone is worth a service visit. Bringing the program up to date is usually one of the simplest ways to reduce both water use and plant stress.
Startup and shutdown are where seasons go wrong
Spring startup and fall shutdown are the two most important irrigation visits of the year, and they are also the two most often skipped or rushed.
A good startup is more than turning on the water. It should include charging the system slowly, running each zone, checking for broken heads and leaks, then setting a seasonal program. Skipping this means problems are discovered in June, when the plants are already stressed and every vendor is busy.
Shutdown matters just as much. Although the South Sound does not freeze the way colder climates do, hard cold snaps do happen, and exposed backflow devices, pipes and valves can be damaged by them. Scheduling shutdown before the first hard freeze protects equipment that is much more expensive to replace than it is to drain. Ask your vendor how they handle timing, and check that your backflow assembly testing is up to date with your water provider.
Nobody has a map of the system
On older properties, irrigation knowledge often lives in the head of one technician. Then the vendor changes, and the new crew has to rediscover where the valves are. Repairs take longer, and every new trench risks damaging lines nobody knew were there.
A simple map of the system is worth having. It should show the controller location, the main shutoff, the backflow device, each valve and roughly which areas each zone waters. Keep it with your property records, not just with your vendor, so it stays with the property if your vendors change.
This also helps when capital projects come up. Parking lot repairs, new walkways and utility work regularly cut through irrigation lines. Knowing what is underground before a contractor starts digging saves a lot of frustration.
A simple seasonal routine
You do not need to walk the system every week. A basic routine covers most of the risk:
- Early spring: schedule startup and confirm the controller program
- Early summer: walk the zones while they run and fix coverage issues
- Peak summer: review the water bill monthly and look for dry or soggy areas
- Early fall: step down the schedule as the weather cools
- Late fall: schedule shutdown and record any repairs for next year
Build these steps into your maintenance agreement, so they happen without anyone having to remember them.
Catching commercial irrigation problems earlier
The properties that avoid large irrigation surprises are usually not the ones with the newest systems. They are the ones where somebody checks the water use, walks the zones and keeps the program current. A little attention through the season goes a long way.
Primed Landscaping provides commercial irrigation service and landscaping maintenance for properties across King and Pierce County. If your system has been running on autopilot, ask us to take a look and we will prepare a written quote.
