TL;DR
A spring sprinkler checklist is a start-of-season inspection that brings your irrigation system back online safely after winter. In Lubbock, that means waiting until freeze risk passes (the average last freeze is April 8, not April 1), pressurizing slowly, running every zone manually, checking backflow compliance, and programming your controller to match City watering restrictions. This guide walks through each step, defines confusing terms in plain English, and tells you when to call a professional.
A spring sprinkler checklist is not “flip the controller on and hope for the best.” It is a controlled inspection, a zone-by-zone test of whether your system survived winter and can water efficiently under current conditions.
In Lubbock and West Texas, that checklist carries extra weight. The city averages just 18.33 inches of rain per year, so every gallon your sprinklers apply matters. The City enforces assigned watering days, bans Sunday irrigation, and prohibits watering during rain, runoff, or temperatures below 35 degrees. Backflow assemblies connected to City water require testing every one to three years, with fines up to $2,000 per day for noncompliance. Skip the spring inspection, and you risk wasting water, missing leaks, and violating local rules before summer even starts.
If your system has not been checked since last season, a professional sprinkler checkup can catch problems before they become expensive.
Spring Sprinkler Checklist at a Glance
This table is the fast version. The sections below explain each step and define the terms you will encounter.
When Should You Start Your Sprinklers in Lubbock?
This trips people up every year. Lubbock’s spring and summer irrigation restrictions begin April 1, but National Weather Service data shows the average last freeze is April 8. Later freezes have occurred as late as May 9 historically. April 1 is a watering-rule date, not a guaranteed freeze-safety date.
The smart approach: start planning in late March, inspect in early April, but do not fill and run the system until the forecast is clear and temperatures are reliably above 35 degrees. One warm March weekend is not sprinkler season.
Lubbock Watering Day Rules
The City assigns irrigation days based on the last digit of your address:
- 0, 3, 4, or 9: Monday and Thursday
- 1, 5, or 6: Tuesday and Friday
- 2, 7, or 8: Wednesday and Saturday
- Sunday: No irrigation allowed for any address
Irrigation is also prohibited during precipitation, when runoff occurs, and when temperatures drop below 35 degrees. These rules run April 1 through September 30.
Key Terms You Need Before Using the Checklist
Most homeowners know where their controller is. Fewer can locate the backflow preventer or explain what a test cock does. Here are the terms that show up on a spring irrigation checklist, defined in plain language.
Backflow Preventer
A device that stops irrigation water from flowing backward into your drinking water supply. TCEQ rules require any irrigation system connected to potable water to use an approved backflow prevention method. In Lubbock, systems connected to City water need a backflow assembly tested every one to three years.
PVB (Pressure Vacuum Breaker)
A common type of backflow assembly. It is the device mounted above ground, usually near where irrigation water branches off from the main supply. TCEQ’s spring restart guidance uses a PVB as the example for showing homeowners how to check isolation valves before restarting.
Test Cocks
Small ports on a backflow assembly used during certified testing. They are not hose bibs. Do not open them casually.
Zone / Station
A section of your system controlled by one valve. Your controller might label it a “station.” You probably call it a “zone.” They mean the same thing.
Controller / Timer
The device that tells each zone when and how long to water. Spring checks should cover date, time, program schedule, backup battery, seasonal adjustment, and watering restrictions.
Solenoid
The electrical component on a valve that opens or closes it when the controller sends a signal. A failed solenoid can cause a zone to skip entirely or refuse to shut off. For deeper troubleshooting, see this guide to valve and solenoid problems.
Precipitation Rate
How fast a zone applies water, measured in inches per hour. Different head types (sprays vs. rotors) have very different rates. You cannot set accurate runtimes without knowing this number.
Catch-Can Test
A simple field test where you place small containers across a zone, run the system for a set time, and measure how much water collects. Texas A&M AgriLife recommends 5 to 9 cans per zone to check both total output and evenness.
Cycle-and-Soak
A scheduling strategy that splits watering into several short cycles with rest periods between them. Instead of running one zone for 20 minutes and watching water pour down the curb, run four 5-minute cycles with soak time in between. Both Texas A&M AgriLife and the City of Lubbock recommend this approach for runoff control.
Water Hammer
A pressure surge or banging sound caused by sudden water movement or valve action. Hunter Industries warns that opening valves too quickly during spring start-up can create surge pressure that may crack or burst lines.
Rain/Freeze Sensor
A device that pauses automatic watering during rain or freezing conditions. If yours is installed, test it during spring start-up. If you do not have one, it is one of the most cost-effective upgrades available. Learn how to test your climate sensors before relying on them for the season.
Flow Monitoring
Technology that measures water flow through the system and flags abnormal usage from leaks, breaks, or clogs. It is particularly useful for catching underground problems before they surface as soggy patches or high water bills.
Before Turning Water On: Safety and Visual Inspection
Walk the property before you touch any valve. Practitioners on LinkedIn describe spring start-up as “the first full inspection of the irrigation season,” not just a water-restoration task. That distinction matters.
Look for cracked pipes, broken heads, damaged backflow components, exposed wires, sunken or tilted heads, and broken valve box lids. TCEQ’s spring restart guidance instructs homeowners to locate the backflow prevention device and confirm isolation valves are in the correct position before sending any water into the system. If the backflow assembly is visibly leaking or damaged, stop there and call a professional.
Before You Touch Anything, Locate These Parts
- Main irrigation shutoff valve
- Backflow preventer
- Controller
- Valve boxes
- Rain/freeze sensor
- Any blowout or drain points
Practitioners on Reddit report that first-time homeowners often know where the controller is but cannot find the shutoff, backflow device, or valve boxes. Locating everything before pressurizing saves time and prevents surprises.
Open the System Slowly
If you remember only one rule from this spring sprinkler checklist, make it this one: pressurize slowly. Open the main water supply valve gradually. A YouTube walkthrough on spring irrigation start-up emphasizes the same point, recommending that homeowners open the main valve slowly and run zones manually before switching to automatic.
While pressure builds, watch the backflow assembly, listen for rushing water, and check visible pipe runs and valve boxes. If water keeps flowing when no zone is active, suspect a leak or stuck valve.
Commenters in r/Irrigation consistently echo this advice. One recommended opening the farthest zone first, turning the water on very slowly, then cycling each zone to bleed air out of the lines.
Stop and call a professional if:
- The backflow assembly leaks continuously
- A valve box fills with water
- You hear loud, sustained hammering
- Water flows when all zones are off
- A zone will not shut off
- Pressure drops across multiple zones
If you suspect a hidden leak in your system, do not keep running zones and hoping the problem resolves itself.
Run Every Zone Manually
The controller displaying “running” does not prove the landscape is getting watered correctly. Run each zone from the controller’s manual mode and physically walk the entire area while it runs. One good zone does not prove the whole system works.
For each zone, watch for:
- Heads that do not pop up fully
- Missing or clogged nozzles
- Heads buried under grass or mulch
- Tilted or sunken heads
- Water landing on sidewalks, driveways, or streets
- Misty spray clouds (a sign of excess pressure)
- Dry wedges between heads
- Pooling or runoff
- Rotors that do not rotate
- Zones that skip or will not shut off
EPA’s Sprinkler Spruce-Up program tells homeowners to inspect each zone for waste and direct water onto landscape instead of hardscapes. EPA also warns that a cracked pipe or broken head can waste up to 25,000 gallons over a six-month irrigation season.
For a fuller list of what can go wrong, this guide to common sprinkler system issues covers the problems that show up most often during spring testing.
Calibrate Runtime With Catch Cans
Generic advice like “run each zone for 15 minutes” is unreliable. Different sprinkler types apply water at vastly different rates. A spray zone might put down an inch in 20 minutes. A rotor zone might need 45 minutes to apply the same amount.
The fix is simple. Place 5 to 9 similar cans (tuna cans work) across a zone. Run spray zones for 5 minutes or rotor zones for 10 to 15 minutes. Measure the depth in each can, average the measurements, then calculate how long you need to run to hit your target.
Quick example:
If spray heads collect an average of 0.25 inches in 5 minutes, applying 1 inch requires about 20 minutes. If runoff starts before 20 minutes, split the runtime into cycle-and-soak intervals.
Lubbock’s guidance says lawns need about 1.5 inches per zone per week. Use that as a target, but let your catch cans tell you how your specific system delivers water.
Program the Controller for Lubbock Spring
Do not use last August’s schedule in April. Spring lawns need less water than summer lawns. Reset the controller with these checks:
- Set date and time correctly
- Match watering days to your City schedule
- Remove any Sunday start times
- Adjust seasonal percentage down for spring
- Enable cycle-and-soak if runoff is a problem
- Check or replace the backup battery
- Reconnect Wi-Fi or app access if applicable
- Verify the rain/freeze sensor interrupts the schedule when triggered
EPA data shows that replacing a standard clock-based controller with a WaterSense-labeled controller can save an average home up to 15,000 gallons of water annually. If your controller is a basic timer with no weather awareness, spring is a good time to evaluate an upgrade.
Explore options for smart irrigation technology if you want weather-based scheduling, flow alerts, or remote access.
Backflow: The Part of Your Spring Checklist Most People Skip
In a recent r/Lubbock thread, a homeowner posted about receiving a City backflow notice and had no idea what to do. The comments stressed hiring someone who is specifically backflow-certified, not just any plumber. This confusion is common.
Here is what belongs on your spring backflow checklist:
- Locate the backflow assembly
- Check for visible leaks or freeze damage
- Confirm whether testing is due (every one to three years for Lubbock)
- Do not ignore City notices
- Hire a licensed BPAT (Backflow Prevention Assembly Tester) for required tests
- Keep documentation or confirm submission to the City
If you have received a notice or are unsure about your assembly’s status, read more about preparing for a backflow test.
DIY vs. Call a Professional
A spring sprinkler inspection covers a lot of ground. Some of it is firmly in DIY territory. Some of it is not.
In r/Irrigation, a homeowner questioned whether a $105 spring start-up fee was worth it. A top commenter explained that the service is not just turning water on. It includes checking every head, finding leaks, and making adjustments. Even a system that is only a year old can develop clogged nozzles, stuck heads, or debris-damaged valves.
Another commenter in the same subreddit warned that if you wait too long to call, irrigation companies can be booked out for weeks during the spring rush. Schedule early.
Lubbock Spring Sprinkler Checklist: Printable Version
Use this as your walkthrough every spring.
- Check the 10-day forecast for freeze risk
- Confirm your City watering days by address
- Remove Sunday irrigation from the controller
- Locate main shutoff, backflow preventer, controller, and valve boxes
- Inspect visible pipes, backflow, wires, valve boxes, and heads
- Open irrigation water slowly
- Watch backflow and valve boxes while pressure builds
- Run every zone manually
- Flag broken heads, low heads, leaks, misting, runoff, dry spots, and overspray
- Adjust heads so water lands on landscape, not pavement
- Check controller date, time, battery, Wi-Fi, seasonal adjust, and start times
- Test rain/freeze sensor
- Use catch cans to calibrate runtime
- Use cycle-and-soak if runoff starts before the zone finishes
- Confirm backflow testing status
- Call a licensed professional for leaks, backflow problems, stuck valves, wiring, or major pressure issues
FAQ
What is a spring sprinkler checklist?
A spring sprinkler checklist is a start-of-season inspection used to safely restart an irrigation system after winter. It covers freeze timing, slow pressurization, backflow status, zone-by-zone testing, head and nozzle inspection, controller programming, and compliance with local watering rules.
When should I turn on my sprinklers in Lubbock?
Use April as planning season, not an automatic start date. Lubbock’s spring irrigation rules begin April 1, but the average last freeze falls around April 8. Check the forecast and do not irrigate below 35 degrees.
Why should I open the water valve slowly?
Opening the valve too quickly creates surge pressure and water hammer, which can crack fittings, burst lines, and damage backflow components. Slow pressurization is the simplest way to prevent spring start-up damage.
How do I know how long to run each zone?
Use a catch-can test. Place several small cans across a zone, run the system for a set time, and measure what collects. Texas A&M AgriLife recommends this method because different sprinkler types apply water at different rates.
What is cycle-and-soak, and do I need it?
Cycle-and-soak splits a long watering time into shorter bursts with rest periods. You need it whenever runoff starts before the zone has applied enough water. It is especially common on clay soils and slopes.
Is backflow testing part of a spring sprinkler checklist?
In Lubbock, it should be. Irrigation systems connected to City water require a backflow prevention assembly that must be tested every one to three years. Property owners are responsible for scheduling testing and submitting results.
What spring sprinkler problems need a professional?
Call a professional for backflow leaks, underground leaks, valve boxes filling with water, zones stuck on or off, wiring or solenoid failures, severe pressure drops, and repeated water hammer. Anything involving potable water protection or buried components is best left to a licensed irrigator.
Can I do a spring sprinkler start-up myself?
You can handle the observation, simple head adjustments, controller programming, and catch-can testing. But irrigation professionals consistently say that a real start-up is more than turning the water on. If your checklist reveals anything beyond basic adjustments, shut the system off and get help before the problem grows.
If your spring checklist turns up leaks, pressure problems, or zones that will not run, learn what to expect from a maintenance visit so you can get your system ready before summer heat arrives.
