Your Complete 2026 Summer Pool Opening Checklist
Summer is here, and it's time to get your pool ready for the season! After a long New England winter, your pool needs some TLC before that first swim. At Sapphire Pools, we've opened thousands of pools across Central Massachusetts over the past 30+ years. Here's the exact checklist we follow — and you can too.
Before You Remove the Cover
1. Clear debris from the cover. Use a leaf net or pool cover pump to remove standing water, leaves, and debris from the top of your winter cover. This prevents all that gunk from falling into the pool when you remove it.
2. Inspect the cover for damage. While it's still on, check for tears, holes, or stretched grommets. A damaged cover should be replaced before next winter — note it now so you don't forget in the fall.
3. Check the area around the pool. Look for any frost heave damage to your deck, coping, or patio. In Central Massachusetts, our freeze-thaw cycles can shift concrete and pavers. Address any trip hazards before pool season starts.
Removing the Cover
4. Have a helper. Pool covers are heavy, especially when wet. Two people make the job much easier and prevent the cover from dragging through the water.
5. Clean and dry the cover before storing. Spread it out on the lawn, hose it off, let it dry completely, then fold and store it in a dry place. A clean, dry cover lasts years longer.
6. Remove any water bags or anchors. Store these with the cover for easy access in the fall.
Inspecting the Pool
7. Check the water level. Winter evaporation and cover drainage often lower the water level. Fill the pool to the middle of the skimmer opening using a garden hose.
8. Inspect the vinyl liner. Look carefully for any tears, wrinkles, or areas where the liner has pulled away from the track. Catching a small tear now prevents a big problem later. Vinyl liners generally last over 10 years with proper care, but winter can be tough on them.
9. Check all returns and skimmer fittings. Make sure nothing has cracked or come loose over the winter.
Reconnecting Equipment
10. Reinstall drain plugs. Put all drain plugs back in the pump, filter, heater, and chlorinator. This is the #1 most forgotten step — and it can damage your pump if you skip it.
11. Reconnect the pump and filter. Reattach any hoses or unions you disconnected during winterization. Check O-rings and gaskets for cracks — replace any that look worn.
12. Lubricate O-rings. Use a silicone-based lubricant (never petroleum jelly) on pump lid O-rings and filter O-rings. This prevents leaks and extends their life.
13. Prime the pump. Fill the pump basket with water before turning it on. Running a pump dry — even for a few seconds — can damage the seal.
14. Turn on the filter system. Start the pump and check for leaks at every connection point. Let it run for 24 hours before testing water chemistry.
Balancing the Water
15. Test the water. After running the filter for 24 hours, test your water for:
- pH: 7.2 - 7.6
- Free Chlorine: 1 - 3 ppm
- Total Alkalinity: 80 - 120 ppm
- Calcium Hardness: 200 - 400 ppm
- Cyanuric Acid (Stabilizer): 30 - 50 ppm
16. Adjust alkalinity first, then pH. Alkalinity is the foundation — get it right and pH becomes much easier to manage.
17. Shock the pool. Add a double dose of shock (calcium hypochlorite) to kill any bacteria or algae that developed over winter. Do this at dusk so the sun doesn't burn off the chlorine before it works.
18. Run the filter continuously for 48-72 hours. After shocking, keep the pump running non-stop until the water is clear. Backwash or clean the filter as needed.
Final Steps
19. Clean the pool. Vacuum the bottom, brush the walls and floor, and skim the surface. Pay extra attention to corners and steps where algae likes to hide.
20. Install ladders, rails, and accessories. Put back any ladders, diving boards, slides, or handrails you removed for winter. Check bolts and anchors for tightness.
21. Test safety equipment. Make sure your pool fence gate latches properly, alarms work, and any safety covers are stored properly.
22. Set up your maintenance routine. Plan to test water 2-3 times per week, run the pump 8-12 hours daily, and vacuum weekly throughout the season.
When to Call a Professional
Some pool openings need professional help:
- Green or black water that needs heavy treatment
- Equipment that won't start or is making unusual noises
- Liner damage that needs repair or replacement
- Plumbing leaks at the equipment pad
- You just don't want to deal with it — and that's perfectly fine!
At Sapphire Pools, we offer full pool opening services throughout Central Massachusetts. We handle everything on this checklist so you can just jump in and enjoy.
Ready to Open Your Pool?
Call Sapphire Pools at (508) 692-6092 for professional pool opening service. We serve Brookfield, Spencer, Sturbridge, Charlton, Worcester, Auburn, Oxford, Webster, Southbridge, Palmer, and all of Central Massachusetts, Connecticut, and Rhode Island.
Happy swimming season!