5 Signs Your Sprinkler System Needs Repair Before Summer Ends

By late July, most lawns across Suffolk and Nassau County have been running on a regular watering schedule for months, and this is exactly the point in the season when small sprinkler problems tend to become impossible to ignore. A system that looked fine in May can develop a leak, a stuck valve, or a wiring issue by the time the hottest weeks of summer arrive, and the difference between catching that problem now and waiting until fall often shows up as a dead patch of lawn that takes an entire season to recover.

The good news is that most sprinkler problems give off warning signs well before they turn into a real headache. You do not need to be an irrigation expert to notice them, you just need to know what to look for. Below are five of the most common signs that a system needs professional attention, based on the repair calls we see most often across Brookhaven, Hempstead, and the rest of Long Island during the middle of the watering season.

1. Brown or Dry Patches That Do Not Match a Watering Pattern

Every lawn has some natural variation, but a patch of grass that stays brown and dry no matter how much rain falls or how often the system runs is usually telling you something specific. In many cases, this points to a sprinkler head that is clogged, broken, or aimed in the wrong direction, leaving that section of the lawn without adequate coverage while the rest of the yard gets plenty of water. It can also point to a zone that is not receiving full water pressure due to a leak elsewhere in the line, which reduces how far water reaches at the end of that zone. The location of the dry patch is often a clue in itself. A dead spot near the edge of a zone, close to a property line, or in a far corner of the yard often means coverage simply is not reaching that far anymore, while a dry patch in the middle of an otherwise healthy lawn is more likely tied to a specific malfunctioning head.

2. Soggy or Unusually Wet Areas That Were Not There Before

A wet spot that appears out of nowhere, especially one that stays wet even on days when the system has not run, is one of the clearest signs of an underground leak. Water finds the path of least resistance, so a leak in a buried pipe or a valve that is not seating correctly often surfaces some distance away from the actual break, which can make the source harder to pinpoint without a trained eye. Left unaddressed, a leak like this does more than waste water. It can lead to fungal growth, attract pests, and eventually undermine the soil structure beneath walkways or patios if the water is left to pool for long enough. If you notice an area of your lawn that squishes underfoot or never seems to dry out between watering cycles, it is worth having a technician trace the issue before it spreads or causes damage to nearby hardscaping.

3. A Noticeable Jump in Your Water Bill

Summer water bills are naturally higher than the rest of the year, but a jump that goes well beyond what you would expect for normal seasonal watering is often a sign that water is being lost somewhere in the system rather than actually reaching your lawn. A slow leak in a buried line can run for weeks without producing an obvious wet spot on the surface, especially in well draining soil, which means the first sign many homeowners notice is the bill itself rather than anything visible in the yard. If your bill increases significantly without a corresponding change in your watering schedule, it is worth having your system checked rather than assuming it is simply the cost of a hot summer.

4. A Controller That Will Not Hold Its Schedule

A controller that resets itself, loses its programming, or runs zones at the wrong times is more than just an inconvenience. It usually means your lawn is not getting water on the schedule you actually intended, which can lead to overwatering some days and underwatering others without anyone noticing until the lawn starts to show it. This kind of problem can stem from a failing controller unit itself, a wiring issue between the controller and the valves, or even a power supply problem depending on where the unit is installed. Because the controller is the brain of the entire system, a malfunction here can mask other issues, since a zone that never activates due to a controller error looks identical from the surface to a zone with a broken valve.

5. One or More Zones That Will Not Turn On or Will Not Shut Off

A zone that refuses to activate, or one that keeps running long after it should have stopped, is one of the more obvious signs something needs attention, but it is still worth understanding why it happens before assuming the fix is simple. A zone that will not turn on can point to a stuck valve, a wiring break between the controller and that specific zone, or a solenoid that has failed. A zone that will not shut off usually points to debris caught in the valve itself, preventing it from closing fully. Either way, letting this go unresolved either wastes significant water through constant running or leaves part of your lawn without water at all, both of which tend to show up clearly in your lawn’s appearance within a week or two.

Why It Pays to Address These Signs Now Rather Than Waiting for Fall

It can be tempting to let a minor irrigation issue slide once you notice it, especially if the rest of your lawn still looks reasonably healthy. The problem is that most of these issues get worse, not better, the longer they run unaddressed. A small leak tends to erode more soil around it over time. A stuck valve wastes more water with every cycle it runs incorrectly. A dry patch that starts as a small brown spot in July can turn into an area that needs reseeding by September if it goes without adequate water through the hottest stretch of the season. Addressing a repair now, while the system is actively in use and the problem is still fresh, also makes diagnosis easier, since a technician can often observe the exact symptom in real time rather than relying on a description of something that happened weeks earlier.

How McCormack Irrigation Approaches Every Repair Call

When you call us with any of the signs above, our technicians do not just address the most visible symptom, they trace the issue back to its actual source. That might mean testing water pressure at multiple points along a zone, checking wiring continuity between the controller and a valve, or digging carefully to locate a leak that is not visible from the surface. We have been repairing sprinkler systems across Brookhaven, Hempstead, and the rest of Suffolk and Nassau County since 2001, and our own trained, in-house staff handle every repair, with no subcontractors involved. That consistency is part of why our repairs tend to hold up, and why so many of our customers call us for the same reliable service year after year.

Frequently Asked Questions

How do I know if a dry patch is caused by a sprinkler problem or something else, like a lawn disease?

A dry patch tied to a sprinkler issue usually follows a pattern related to zone coverage, such as appearing at the edge of a zone or near a specific head. A lawn disease often creates irregular, spreading patterns unrelated to your watering zones. If you are unsure, a technician can check your system’s coverage first, since that is usually the simpler explanation to rule out.

Can a small leak really cause a noticeable increase in my water bill?

Yes. Even a slow leak that runs continuously for weeks can add up to a significant amount of wasted water, especially if it is not visible on the surface due to soil type or depth.

Is it normal for a controller to need occasional resets?

Occasional resets after a power outage are normal, but a controller that repeatedly loses its programming or resets on its own usually points to an underlying issue that should be checked.

What should I do if I notice a wet spot but I am not sure it is related to my sprinkler system?

It is worth having it checked regardless, since sprinkler leaks are a common and often overlooked cause of unexplained wet areas, and catching it early prevents further damage to your lawn or nearby hardscaping.

How quickly does a dry patch typically recover once the underlying issue is fixed?

Recovery time depends on how long the area went without adequate water and the time of year, but most lawns show visible improvement within a few weeks of consistent, correct watering after a repair.

Can I diagnose these issues myself before calling for repair?

You can often narrow down the general area of a problem by observing your system run through each zone, but tracing the exact cause, especially for underground leaks or wiring issues, typically requires a trained technician.

Do these signs apply to both residential and commercial irrigation systems?

Yes. The same warning signs, dry patches, wet spots, rising water bills, controller issues, and zones that will not activate or shut off, apply to both residential and commercial systems.

How quickly can McCormack Irrigation respond to a repair call during the summer?

We work to schedule repair visits as quickly as possible during the active watering season, since a broken system can affect your lawn right away this time of year.

Noticing any of these signs on your own property? Call McCormack Irrigation today at (631) 744-1500 or contact us online to schedule a sprinkler repair visit anywhere in Brookhaven, Hempstead, or across Suffolk and Nassau County, NY.