A brown strip along the driveway, water running down the curb, or sprinkler heads spraying a fence are not small appearance issues. They can signal wasted water, rising utility costs, and stressed landscaping. This guide to irrigation system evaluations explains what a professional looks for, what the findings mean, and how property owners can move from a visible problem to a clear repair or upgrade plan.
Why an Irrigation System Evaluation Matters
An irrigation system has several working parts: the controller, valves, wiring, pipes, sprinkler heads, drip components, and sensors. A problem in one area can affect the rest of the system. A broken head may look like the issue, but low pressure, a damaged valve, or an underground leak could be the real cause.
An evaluation identifies the source of the problem before repairs begin. That matters for homeowners who want to protect a lawn or garden, as well as landlords and property managers responsible for larger grounds. Rather than replacing parts based on guesswork, a professional can determine what is failing, what can be repaired, and what may need to be updated.
Timing also matters. A leak can waste a significant amount of water before it becomes obvious. Poor coverage can dry out turf and planting beds even when the system appears to run normally. A prompt evaluation helps stop a manageable repair from turning into landscape damage, water waste, or a larger replacement project.
What a Guide to Irrigation System Evaluations Should Cover
A useful evaluation does more than confirm that water comes out of the sprinkler heads. It checks how the system performs zone by zone and whether the equipment is delivering water where it is needed.
Controller and Schedule Check
The controller sets the schedule for every irrigation zone. During an evaluation, the technician checks whether the clock is programmed correctly, zones are assigned properly, and run times match the type of landscape being watered.
A controller may be working mechanically but still be set up inefficiently. For example, a shaded area generally should not receive the same run time as a full-sun lawn. Seasonal changes also matter. A schedule that worked during peak summer heat may overwater the property during cooler or wetter periods.
If a zone will not start, runs at the wrong time, or will not shut off, the evaluation may include checking controller settings, wiring connections, solenoids, and valves. The right fix depends on where the failure begins.
Sprinkler Head Coverage and Condition
Sprinkler heads should distribute water evenly across the intended area without spraying buildings, sidewalks, vehicles, or neighboring property. A professional runs each zone to identify heads that are clogged, tilted, buried, broken, mismatched, or improperly aimed.
Coverage problems are common after mowing, landscaping work, soil settling, or accidental damage. A head that sits too low may be blocked by grass. A head that sits too high is easier to strike with lawn equipment. Repositioning or replacing a head can correct the issue, but only after confirming that the nozzle type and spacing are appropriate for the zone.
Different sprinkler heads apply water at different rates. Mixing head types in the same zone can leave one section dry while another section receives too much water. This is one of the reasons a quick visual check is not always enough.
Leaks, Pressure, and Valve Performance
Water pooling around a valve box, wet soil between irrigation cycles, or a zone that remains damp long after it shuts off can point to a leak. Leaks may occur at fittings, pipes, valves, heads, or drip lines. Some are easy to locate. Others are underground and require a closer diagnosis.
The evaluation also looks at water pressure. Low pressure can cause weak spray patterns and incomplete coverage. High pressure can create misting, where water blows away before reaching the ground. Both conditions waste water and reduce results.
Valves control when each zone turns on and off. If a valve does not close fully, water may continue flowing after the schedule ends. If it does not open correctly, that zone may not water at all. Identifying a valve issue early helps prevent ongoing waste and protects the rest of the system from unnecessary strain.
Drip Irrigation and Landscape Beds
Drip irrigation needs its own inspection. Unlike a sprinkler problem, a damaged drip line may not be visible until plants begin to decline or water surfaces in the wrong place. The evaluation checks emitters, tubing, connections, filters, and pressure regulation.
Drip systems are efficient when they are installed and maintained correctly. However, clogged emitters can leave plants dry, while damaged tubing can send water into a concentrated area. A professional can determine whether the existing layout still fits the current landscape, especially after new shrubs, trees, or hardscaping have been added.
Signs It Is Time to Schedule an Evaluation
Property owners do not need to wait for a complete system failure. An evaluation is a practical next step when you notice recurring dry spots, soggy patches, unusually high water bills, water spraying onto hard surfaces, or zones that fail to start or stop correctly.
It is also wise to schedule an evaluation before the main watering season, after a hard freeze, or when taking over a property with an unfamiliar irrigation system. For rental and commercial properties, regular evaluations can help prevent tenant complaints, curbside runoff, and avoidable landscape replacement costs.
If the system has been repaired repeatedly in the same area, ask for a full assessment instead of another isolated fix. Repeated broken heads may indicate poor placement. Repeated leaks may point to aging pipe, pressure problems, or damage from roots and ground movement.
What Happens During a Professional Evaluation
A thorough visit starts with a conversation about the problem. The technician should understand what you have noticed, when it occurs, which zones are affected, and whether the issue is new or recurring. Photos, water bills, and notes about the controller schedule can help, but they are not required.
The system is then tested zone by zone. This allows the technician to observe spray patterns, pressure, runoff, valve operation, and controller response under normal operating conditions. Visible issues are documented, and the evaluation may reveal related concerns that are not obvious when the system is off.
After the inspection, you should receive a clear explanation of the recommended work. That may include a straightforward repair, replacement of damaged components, controller adjustments, coverage corrections, or a larger installation recommendation. The best option depends on the age of the system, the condition of the components, and the goals for the property.
ASM Irrigation provides same-day consultation and estimates, giving property owners a faster path from diagnosis to a defined repair or installation plan.
Repair, Upgrade, or New Installation?
Many irrigation issues can be repaired cost-effectively. Replacing a broken head, repairing a fitting, correcting a valve issue, or adjusting a controller may restore proper performance without major work.
An upgrade becomes more reasonable when the system is outdated, difficult to control, poorly matched to the landscape, or repeatedly failing. Newer controllers, rain sensors, pressure-regulated components, and properly designed drip zones can improve water management. Still, not every older system needs complete replacement. A professional evaluation separates necessary work from optional improvements so you can make a practical decision.
For a property with major landscaping changes or chronic coverage problems, a new installation may be the better long-term answer. The goal is not to install more equipment than necessary. It is to create a system that waters consistently, avoids waste, and can be maintained without constant repairs.
How to Prepare for the Visit
Before the evaluation, make sure the controller is accessible and note any zones that have caused trouble. If possible, avoid changing settings immediately before the appointment so the technician can see how the system has been operating. Clear obvious obstructions around valve boxes and sprinkler heads when it is safe to do so.
Most importantly, be ready to explain what you want from the system. You may be focused on stopping a leak, improving dry areas, reducing runoff, or getting a neglected system working again. A clear goal helps shape the recommendation and estimate.
A working irrigation system should support the property without demanding constant attention. When water goes where it belongs and each zone performs as intended, your landscape has a better chance to stay healthy while your budget stays under control.