Serving Murphy, Texas
Serving Murphy, Texas
You set your sprinkler timer, watch the system kick on, and assume your lawn is getting what it needs. Then the brown patches show up. They start small near the sidewalk or in a back corner, and within a few weeks they’ve spread into crispy, straw-colored spots that won’t green up no matter how often the system runs. At Murphy Sprinkler Repair, we see this problem all the time, and we know how frustrating it is to watch your lawn struggle when your system looks like it’s doing its job.
In many cases, the cause isn’t the weather or bad grass. It’s sprinkler system underwatering: your irrigation system isn’t delivering enough water to every part of your lawn, even though it looks like it’s working.
In this guide, you’ll learn:
Here’s how to figure out what’s going wrong and get your lawn back on track.
Grass tells you when it’s thirsty, but the signals are easy to miss. Catching them early can mean the difference between a quick fix and reseeding large sections of your yard.
Before grass goes fully brown, it often takes on a dull, bluish-gray tint. That color shift happens because the blades are losing moisture and starting to wilt. If you notice patches that look faded compared to the rest of your lawn, pay attention to them.
Try the footprint test. Walk across your lawn and look back. Healthy, well-watered grass springs back within a few seconds. Thirsty grass stays flat, leaving footprints behind for several minutes or longer.
Many grass types curl or fold their blades lengthwise when they’re short on water. This is a survival response that reduces moisture loss. It’s a clear sign your turf is under stress.
Push a long screwdriver into the soil. In properly watered soil, it should slide in 6 inches or so without much effort. If you hit hard, dry ground after an inch or two, water isn’t reaching the root zone.
This is the big clue. When brown spots show up in predictable shapes, such as circles between sprinkler heads, strips along one edge, or an entire zone that’s dry, the problem is almost always your irrigation system rather than disease or pests.
Quick recap: Dull color, lingering footprints, curled blades, hard soil, and patterned brown spots all point to insufficient water reaching your grass.
A sprinkler system has many working parts, and a problem with any one of them can leave parts of your lawn dry. Here are the most common culprits we see.
Sprinkler heads take a beating. Lawn mowers clip them, cars roll over them, and dirt or debris clogs the nozzles. Over time, heads can also sink below the grass line, so the spray gets blocked before it travels very far.
A single broken or clogged head can create a dry zone several feet wide. Because the rest of the system runs normally, the problem is easy to overlook.
Properly designed systems use “head-to-head” coverage, meaning each sprinkler’s spray reaches the next head. When heads get knocked out of alignment or spray onto the driveway instead of the grass, gaps form. Those gaps become brown spots.
Your sprinklers need adequate pressure to throw water the right distance. When pressure drops, spray patterns shrink and leave the outer edges of each zone dry.
Low pressure often comes from underground pipe leaks. Water escapes before it ever reaches the heads, so your lawn gets less while your water bill climbs.
Each zone in your system is controlled by a valve, and each valve is opened by an electric solenoid. If a valve sticks partially closed or a solenoid fails, that zone may get a weak flow or no water at all.
The result is often an entire section of lawn turning brown while the rest stays green.
Your controller is the brain of the system. A failing controller, a power outage that resets the schedule, or a simple programming error can cut watering times short or skip zones entirely.
Damaged wiring between the controller and the valves can cause the same symptoms. The controller sends the signal, but the zone never turns on.
Rain sensors are designed to pause watering after a storm. When they malfunction, they can “think” it’s raining all the time and keep your system shut off for days or weeks. This is one of the sneakiest causes of underwatering because everything else looks fine.
Quick recap: Broken heads, coverage gaps, low pressure, leaks, faulty valves, controller errors, and stuck rain sensors can all starve your lawn of water.
Not every brown spot comes from a thirsty lawn. Ruling out other causes helps you avoid wasted time and money.
If the soil is dry and the brown areas line up with your sprinkler zones or the spaces between heads, irrigation is the likely cause.
Before you call for service, a few simple checks can help you narrow down the problem. Use this checklist:
When brown spots appear, many homeowners simply turn up the run time on every zone. That rarely fixes the problem. If a head is broken or a valve is sticking, extra run time just overwaters the healthy areas while the dry spots stay dry. You end up with a higher water bill, soggy grass in some places, and the same brown patches.
The better approach is to find the actual cause and fix it.
Some problems are easy to spot. Others hide underground or inside the system’s electronics. That’s where professional diagnostics make a real difference. Our technicians use a structured process to find exactly why your lawn isn’t getting enough water.
We evaluate how evenly water is distributed across your lawn. Coverage analysis reveals gaps between heads, overlapping spray, and areas that receive far less water than others.
Checking soil moisture levels shows us how deeply water is penetrating and which areas are falling short. This takes the guesswork out of watering and helps us set a schedule that fits your lawn.
Flow rate testing measures how much water is moving through your system. Pressure testing confirms the system is operating in the right range. Together, they help us pinpoint weak zones, restrictions, and hidden leaks.
We test your controller to make sure it’s sending the right signals to each zone. Electrical diagnostics track down wiring faults and failed solenoids that can keep valves from opening.
Using advanced tools, we locate hidden underground leaks that rob your system of pressure without digging up your whole yard.
We review how your system adapts to current weather conditions. That includes your rain sensor and seasonal schedule settings, so your lawn gets the right amount of water as conditions change.
Once we find the cause, we fix it. Our repair services cover every major part of your irrigation system:
And if something goes seriously wrong, such as a burst pipe or major leak, our 24/7 emergency service is available around the clock.
Fixing your sprinkler system is the most important step. These habits will help your grass bounce back faster:
Brown spots and stressed grass are frustrating, but they’re also useful warning signs. When dry patches follow the layout of your sprinkler system, the problem is usually a broken head, coverage gap, low pressure, faulty valve, or controller issue. More run time won’t solve it. A targeted diagnosis and the right repair will.
Start with the quick checks above. If the cause isn’t obvious, or you’d rather have an expert handle it, our team can test, diagnose, and repair your system so every part of your lawn gets the water it needs.
Request services from Murphy Sprinkler Repair today. Call 469-340-0077 to schedule an inspection and give your lawn the healthy, even coverage it deserves.
