Sprinkler System Maintenance: What to Do Each Year

What Sprinkler System Maintenance Is Required Each Year?

A properly maintained sprinkler system lasts 20 to 30 years. Skipping annual maintenance leads to preventable failures that cost significantly more than the maintenance itself. Here is the annual maintenance calendar.

Spring Startup (March to April)

Turn on the water supply slowly to prevent water hammer (pressure surge from rapid pressurization). Run each zone and inspect every head for: correct rotation and arc, misting rather than streaming (indicates low pressure or clogged nozzle), misalignment from winter heaving or mowing damage, and heads that do not pop up or retract correctly. Adjust controller programming for the new season spring watering schedules differ from summer peak watering. Professional startup: $50 to $100. (For more on this, see Sprinkler System Maintenance: What You Need to Do Each Season.) EPA WaterSense recommends about one inch of water a week, avoiding midday watering, and weather-based controllers to cut waste.

Mid-Season Check (July)

Walk the property and observe each zone during operation once during peak season. Look for: dry spots that indicate a failed or misaligned head, wet spots or depressions indicating a leak, heads stuck in the up position, and mowing damage to head bodies. Mid-season is also the time to adjust controller schedules if the initial spring programming is producing dry spots or pooling.

Fall Winterization (October to November)

Blow out the system with compressed air (1 to 1.5 inches per zone capacity or equivalent commercial compressor, 50 to 80 psi, not to exceed the system’s maximum operating pressure). Run each zone through the blowout sequence 2 to 3 times until no water is visible from the heads. Shut off the main supply valve. Drain and insulate any above-ground components. Set the controller to the off or rain mode. Professional winterization: $75 to $150. (For more on this, see DIY vs. Professional Sprinkler System Installation.)

Working With a Contractor on This Project

Getting the right outcome on any home services project starts before the work begins. A few consistent practices make the difference between a smooth project and a frustrating one.

Get at least two or three quotes. A single quote gives you no basis for comparison. Two or three quotes reveal the market rate for the work, expose scope differences between bidders, and let you assess contractor communication quality before any commitment is made. The lowest bid is not automatically the best value if the scope is thin or the materials are underspecified.

Ask for licenses and insurance before work starts. Verify current general liability insurance and, for any work involving workers on your property, workers compensation coverage. Licensing requirements vary by state and trade; confirm the specific requirements in your jurisdiction. A licensed contractor who carries appropriate insurance protects both parties if something goes wrong during the project.

Get the scope in writing. A written proposal that specifies materials, labor scope, timeline, what is included (permits, cleanup, disposal), and warranty terms is the foundation of a professional engagement. Verbal agreements on any of these points invite misunderstanding. For any project over $500, written scope is non-negotiable.

Clarify the payment schedule upfront. A reasonable payment schedule ties major payments to project milestones: a deposit at signing, a payment at material delivery or project start, and a final payment at completion after a walkthrough confirms satisfaction. A contractor who requires full payment upfront before work begins is a red flag in any trade.

Making a Confident Decision

The information in this article is designed to help you ask better questions of the professionals you work with, evaluate their answers with more confidence, and understand the decisions involved in this type of home services project. It is not a substitute for professional assessment of your specific home.

Every home is different. Roof slopes, local weather, tree exposure, soil conditions, and existing system condition all affect what the right solution is for your specific situation. The general principles here apply broadly, but a professional who assesses your home in person will give you guidance that accounts for the details that general articles cannot.

When you are ready to move forward, getting at least two or three quotes from licensed, insured, local contractors is the most important practical step. It lets you compare approaches, assess contractor quality, and confirm that the solution proposed matches your specific situation and budget.

Sprinkler System Cost at a Glance

Cost Factor	Typical Range	Notes
Per zone installed	$500 to $1,000 per zone	most yards need 4 to 8 zones.
Small-yard full system	$500 to $3,000	for simpler layouts with fewer zones
Large or complex system	$3,000 to $5,000	or more for many zones, smart controls, or difficult terrain
Overall range	$500 to $5,000, averaging $2,500