How to Start Your Spring Sprinkler System and Check for Leaks
Starting your sprinkler system in spring is essential for catching leaks, broken heads, and coverage gaps before they waste water or damage your lawn. This simple maintenance task takes less than an hour and can be done by any homeowner—no special skills required. Performing this annual check will save you money on water bills and keep your yard looking healthy throughout the growing season.
What You'll Need
Supplies
- •Replacement sprinkler heads (if needed)(optional)($5-15 per head)
- •Sprinkler head nozzles/spray tips (if needed)(optional)($2-8)
- •Teflon tape for sealing connections (if leaks found)(optional)($3-5)
- •Landscape flags or stakes for marking(optional)($5-10)
Tools
- •Screwdriver (flathead and Phillips)
- •Adjustable wrench or pliers
- •Bucket or container (for catching water when draining filter)
- •Flashlight or headlamp(optional)
- •Garden hose (for flushing heads if needed)(optional)
- •Pressure gauge (to read system PSI)(optional)
Step-by-Step Instructions
Locate Your Sprinkler System Main Valve and Control Box
Find your irrigation system's main shut-off valve, typically located near your water meter or where the supply line enters the system. Also locate the controller box (timer), usually mounted on a wall or in a garage—this controls when and how long zones run. Take photos of both locations so you can reference them if you encounter any issues during startup.
Pro Tip: Mark these locations with a small stake or flag so you can find them quickly during future maintenance.
Inspect All Visible Sprinkler Heads and Lines for Winter Damage
Walk through your entire yard and visually inspect each sprinkler head and above-ground line for cracks, breaks, or displacement from winter weather or frost heave. Look for heads that are tilted, sunken, or completely missing. Take note of any obvious damage you spot—you'll address these before turning on the water.
Pro Tip: Use your phone to take photos of any damage for reference when ordering replacement parts.
Clear Debris and Obstructions Around Sprinkler Heads
Remove any leaves, dirt, mulch, or pine needles that may have accumulated around sprinkler heads over the winter. Gently clear the nozzles so water can flow freely without spraying debris or being blocked. Check that no plants, branches, or lawn furniture are blocking spray patterns.
Pro Tip: Use a soft brush or your hand to avoid accidentally breaking the fragile pop-up heads.
Turn On the Main Water Valve Slowly
Go to your main shut-off valve and turn it on slowly—do not open it all at once. Turning it gradually allows water to fill the system lines and bleed out any trapped air that accumulated during winter. Open it about halfway and wait 2-3 minutes, then continue opening until fully on.
Pro Tip: Opening slowly prevents water hammer (loud banging) and helps you catch any immediate leaks at connection points.
Activate Each Sprinkler Zone Manually and Observe for Leaks
Go to your controller box and manually start the first zone for 5-10 minutes. Walk the entire zone while it runs and look for leaks at sprinkler heads, connection points, and buried lines (evident by wet spots or geysers from underground). Note the spray pattern and coverage—you want even coverage with no dry spots. Repeat this process for each zone.
Pro Tip: Take notes or photos of any leaks, broken heads, or coverage issues you find; this helps you prioritize repairs.
Check for Coverage Gaps and Spray Pattern Issues
As each zone runs, observe whether the spray reaches all areas of your lawn and garden beds evenly. Look for dead zones where no water reaches and areas receiving overlapping spray. Pay attention to whether sprinkler heads are rotating smoothly (for rotary heads) or producing a full fan pattern (for fixed spray heads). Coverage problems may indicate clogged nozzles, misaligned heads, or a head that needs replacement.
Pro Tip: Mark any coverage gaps with landscape flags so you can remember where to add extra heads or adjust angles after startup.
Inspect and Clean the Sprinkler System Filter
Locate your system's filter (usually a small canister or tank with a drain valve near the main supply line). Check the pressure gauge if one is present—normal operating pressure is typically 50-70 PSI. If the system has a filter drain plug, open it slightly into a bucket to release any debris or sediment that accumulated over winter. Close the drain plug and check that no water leaks from the connection.
Pro Tip: Cleaning the filter now prevents clogs that would reduce water pressure and cause weak spray patterns throughout the season.
Verify Controller Settings and Make Final Adjustments
Return to your controller box and verify that the timer is set to your desired watering schedule (typically 2-3 days per week in spring, depending on rainfall and your climate). Confirm that each zone is set to an appropriate run time—usually 15-30 minutes per zone depending on your soil and plant types. Set the system to 'Auto' mode or turn it off if you prefer to manually run zones while you monitor them over the first week.
Pro Tip: Keep your controller in manual mode for the first week of operation so you can observe results and make adjustments before committing to a full schedule.
Related Guides
How to Clean Your Gutters
Clogged gutters are one of the leading causes of water damage to homes. When gutters overflow, water seeps into fascia boards, behind siding, and into your foundation. Cleaning them twice a year -- in late spring and late fall -- prevents thousands of dollars in potential water damage.
How to Winterize Your Sprinkler System to Prevent Freeze Damage
Winterizing your sprinkler system is critical for preventing thousands of dollars in pipe damage when water freezes and expands inside underground and above-ground lines. Most homeowners can complete this task in a few hours using an air compressor and basic tools, making it a worthwhile DIY project that saves significant money compared to professional repairs. Skipping this step in fall can result in $1,000-3,000 in pipe replacement costs come spring.
How to Inspect Your Fence for Damage and Maintenance Needs
Regular fence inspections help you catch small problems like loose boards and rotting wood before they become expensive repairs requiring full fence replacement. This straightforward task takes about an hour and can be completed by any homeowner with basic tools and attention to detail. By identifying issues early, you'll save thousands of dollars in preventative maintenance.
Never forget this task again
Track it free with HomeBase — automatic reminders, completion history, and cost tracking for all your home maintenance.
Start Tracking Free