Spring Plumbing Maintenance Checklist: 15 Things to Do Now
Winter is hard on plumbing. Freeze-thaw cycles stress pipes and joints. Water heaters work overtime. Outdoor plumbing sits dormant and may have taken damage. Spring is the ideal time for a top-to-bottom plumbing review — catching small issues before they become expensive emergencies.
This checklist covers everything you should check or do in April and May to protect your home's plumbing through the year.
1. Inspect Outdoor Hose Bibs
After winter, outdoor spigots are the first place to check for freeze damage. Turn each one on and check for:
- Full pressure and flow (if weak, there may be a partial blockage)
- Leaks at the wall connection (water dripping where the faucet exits the siding)
- Water dripping from inside the wall when on (indicates a cracked pipe inside)
If you had a hose bib freeze and then thaw, it may have cracked internally — water only appears when pressure is applied. Fix: Replace the hose bib or the interior pipe segment. A frost-free sillcock replacement costs $150–$300 installed.
2. Reconnect and Inspect Garden Hoses
Check hoses that were stored over winter:
- Look for cracks or splits in the hose body
- Check the rubber washers in the fittings — replace them if cracked ($1 each)
- Turn on the water and check for leaks at the connection points
- Don't over-tighten fittings — hand tight + 1/2 turn is enough
3. Test the Sump Pump
Spring brings heavy rain — exactly when your sump pump needs to work perfectly.
How to test:
- Slowly pour a bucket of water into the sump pit
- The pump should activate automatically when water reaches the float level
- It should pump down and shut off cleanly
What to check:
- Float moves freely (not jammed against the pit wall)
- Discharge line is clear and exits away from the foundation
- The GFCI outlet the pump is plugged into is working
- Consider testing the backup battery (if you have a battery backup sump)
A failed sump pump during a heavy spring rain can mean thousands of dollars in basement flooding damage. Test it before you need it.
4. Check for Signs of Winter Pipe Damage
Walk through the house and look for:
- Water stains on ceilings, walls, or floors that appeared over winter
- Musty smell (hidden moisture = potential mold beginning)
- Stiff or damaged drywall near exterior walls where pipes run
- Reduced pressure at any fixture compared to last year
Even pipes that didn't burst visibly may have developed pinhole leaks from freeze stress. Better to find these with a visual inspection than a water bill spike or a wall cavity leak in summer.
5. Flush the Water Heater
Sediment accumulates at the bottom of tank water heaters year-round, but more rapidly in hard water areas. An annual flush:
- Removes sediment that insulates the heating element (reducing efficiency)
- Extends heater lifespan
- Reduces the popping/rumbling sounds from trapped water under sediment
How:
- Attach a garden hose to the drain valve at the bottom
- Turn off the heater (breaker for electric; gas valve to "pilot" for gas)
- Open a hot water faucet somewhere in the house to prevent a vacuum
- Open the drain valve and let water run until it runs clear
- Close the valve, remove the hose, restore power
Budget 30–60 minutes. Do this every year, more often in hard water areas.
6. Check the Water Heater Anode Rod
The anode rod inside your water heater sacrificially corrodes to protect the tank. When it's depleted, the tank starts corroding. Average lifespan: 3–5 years.
If your water smells sulfurous ("rotten egg"), the anode rod is depleted or reacting with your water chemistry — replace it. New anode rods cost $20–$50; a plumber can replace it for $75–$150 total.
7. Test All Sink Shutoff Valves
The shutoff valves under every sink should be turned off and back on once a year. This prevents them from seizing open (the most common failure mode — they freeze in the open position and won't close in an emergency).
Turn each valve off (clockwise) and then back on. If any valve is stiff, corroded, or won't turn, replace it now — not when you're standing in water under the sink trying to stop a leak.
8. Test the Main Water Shutoff
Same logic as individual valves — turn it off, then back on. Confirm the whole house loses water when closed. If it won't turn or doesn't fully stop flow, have a plumber replace it before you need it in an emergency.
9. Run the Leak Detection Test on the Water Meter
With all fixtures off, watch the low-flow indicator on your water meter for 15 minutes. If it's spinning, you have a leak somewhere in the system.
This catches:
- Running toilet flappers
- Leaking irrigation supply lines
- Slow drips at fixture shutoffs
- Underground service line leaks
Catching a toilet flapper leak early saves hundreds of gallons per day.
10. Check the Irrigation System
Before turning on sprinklers for the season:
- Visually inspect all above-ground heads for damage from lawn equipment or foot traffic
- Turn on each zone and watch for broken heads (shooting straight up or spraying incorrectly), missing heads, and misaligned spray
- Check the backflow preventer for damage — required by code in most municipalities, prevents irrigation water from contaminating potable supply
- Adjust spray heads if they've shifted over winter
Common spring irrigation repairs: broken spray head ($5–$20 each + $75–$150 labor if hired), cracked supply line, failed solenoid valve in the controller box.
11. Clean Showerhead and Faucet Aerators
Mineral deposits build up in showerheads and faucet aerator screens over winter. Clean them now:
- Showerheads: Bag soak in white vinegar overnight, or remove and submerge
- Faucet aerators: Unscrew from the tip, remove the screen, rinse under water, reinstall
This restores pressure and flow that's been gradually decreasing.
12. Check for Running Toilets
The dye test: Add food coloring to the toilet tank. Wait 15 minutes without flushing. If color appears in the bowl, the flapper is leaking. A $10 replacement part fixes a 200+ gallon/day leak.
Check all toilets. Running toilets are the single most common hidden water waste in residential plumbing.
13. Inspect Under Every Sink
Open the cabinet under each sink and look:
- Any water stains on the cabinet floor or walls?
- Corrosion on the drain trap or supply lines?
- Any drips at the P-trap connections?
- Shutoff valves showing corrosion or moisture?
Early detection prevents mold growth and cabinet damage.
14. Clean the Sump Pit
While the sump pump is accessible, clean the pit:
- Unplug the pump
- Remove debris, sediment, and any accumulated grime from the pit bottom
- Check the pump intake screen for blockage
- Rinse the pit and pump housing
- Reinstall and re-test
A clean pit ensures the pump operates efficiently when it matters.
15. Schedule a Plumber Visit for Any Found Issues
Make a list as you work through this checklist. If you found:
- A leaking hose bib
- A seized shutoff valve
- A positive leak test on the meter
- A failing sump pump
- A water heater over 10 years old
...schedule a plumber visit now, before summer. Spring and early summer are excellent times — demand hasn't peaked, scheduling is easier, and you'll beat the summer emergency calls.
Printable Checklist Summary
- ☐ Inspect and test outdoor hose bibs
- ☐ Check garden hoses and fittings
- ☐ Test sump pump with bucket
- ☐ Inspect for winter pipe damage signs
- ☐ Flush water heater
- ☐ Check anode rod condition
- ☐ Exercise all sink shutoff valves
- ☐ Test main water shutoff valve
- ☐ Run water meter leak detection test
- ☐ Check and restart irrigation system
- ☐ Clean showerheads and aerators
- ☐ Dye test all toilets for flapper leaks
- ☐ Inspect under all sinks
- ☐ Clean sump pit
- ☐ Schedule plumber for any found issues
Completing this list once a year takes 2–4 hours and prevents the kind of plumbing surprises that ruin weekends and budgets. Start with the sump pump and water heater — those have the highest consequence if they fail — and work through the rest at your pace.