About Ontario Pool Service
Filed in Willowdale
PoolBuilderIndex lists Ontario Pool Service as a pool builder serving Willowdale, rated 4.7★ across 42 Google reviews.
Filed on PoolBuilderIndex under
- Pool Builders
- Pool Maintenance
- Pool Renovation
Why Ontario Pool Service ranks where it does
65/100
Reviews34/45
Its own statements8/30
Its record23/25
Ontario Pool Service, read 19 August 2026
- Says it has been going since 1999
In the Ontario Pool Service reviews
- Opening and closing
- “for my pool openings and closings, and they’re consistently reliable.”
- Pool renovation
- “Denis and his team provided excellent job during the complete renovation of our pool.”
- Regular maintenance
- “using Ontario Pool Service for openings, closings, and weekly maintenance in Richmond Hill.”
- Pumps and filters
- “our pool pump was not working properly, and the water circulation was becoming worse.”
- Liner replacement
- “My liner and coping was done perfectly, pool looks night and day compared to what it was before.”
What customers say
42 Google reviews
Highlights from the Google reviews left for Ontario Pool Service. Ratings are set by reviewers, not PoolBuilderIndex.
“Very happy with the services provided, efficient, friendly and cost effective. My liner and coping was done perfectly, pool looks night and day compared to what it was before.”
- 2 months ago
“We have been using Ontario Pool Service to open and close our pool for over 6 years since our pool was completely renovated by company. Denis and his team provided excellent job during the complete renovation of our pool. Installation of the brand new equipment was done with the highest professional level. Any issues related to the maintenance of our pool always resolved without any delays. I would like to say thank you to the Denis and his team and may strongly recommend this company for the construction or renovation…”
Alan · via Google reviews
- 4 months ago
“I’ve been using Ontario Pool Service in Vaughan for my pool openings and closings, and they’re consistently reliable. The team arrives on time, handles everything professionally, and makes seasonal maintenance completely stress-free. Highly recommend for anyone in Vaughan looking for trustworthy pool service!”
Randy · via Google reviews
- 4 months ago
“We hired Ontario Pool Service for our backyard project in Toronto (Etobicoke), and the result is beautiful. They helped with the pool design and landscaping, and everything came together perfectly. The lighting at night looks amazing. If you’re want a full backyard transformation, I highly recommend them.”
Manoel · via Google reviews
- 4 months ago
“Ontario Pool Service painted our pool in Markham and it looks brand new again. The prep work was done properly, and the finish is smooth and clean. You can see they care about the details. If you’re considering pool painting in Markham or around the they’re a solid choice.”
Edson · via Google reviews
- 4 months ago
“We’ve been using Ontario Pool Service for openings, closings, and weekly maintenance in Richmond Hill. They always show up on time and keep everything spotless. The water is crystal clear all season. It’s such a relief not having to worry about anything. Great service for anyone who wants reliable pool maintenance.”
Joel · via Google reviews
- 4 months ago
“We discovered a few weeks ago that our pool pump was not working properly, and the water circulation was becoming worse. Ontario Pool Service came out to investigate and soon identified the problem. They repaired the equipment and cleaned the pool while they were there. The guy was pleasant and detailed what needed to be done to avoid the problem in the future.”
Rogelio · via Google reviews
- 10 months ago
“We’ve had an outstanding experience with Ontario Pool Services from start to finish. They didn’t just maintain our pool - they designed and built it from the ground up, and we couldn’t be happier with the results. Since completion, they've handled every opening and closing with the same high level of care and professionalism. Each spring, they open the pool efficiently and ensure all systems are running perfectly. In the fall, they take great care in closing it properly, protecting it through the winter. Joey is reliable, friendly and easy…”
Thomas · via Google reviews
Similar pros nearby
within reach of Willowdale
- Swim Clean Pool Service Inc 4.9★ · 170 reviews
- GTA Pool Builders 5.0★ · 19 reviews
- Artisian Corp. 4.5★ · 8 reviews
Ontario Pool Service: frequently asked questions
Is Ontario Pool Service well reviewed?
- Ontario Pool Service holds a 4.7-star Google rating across 42 reviews. 38 of those ratings are five-star (90%), and 3 are one or two. Ontario Pool Service sits above the 4.59★ average for pool builders in PoolBuilderIndex's dataset.
Where is Ontario Pool Service based?
- 1136 Centre St Ste 342, 3, Thornhill, ON L4J 3M8. The postal code is L4J 3M8. PoolBuilderIndex files it under Willowdale, in City of Toronto; its own listing gives the city as Thornhill.
How do I contact Ontario Pool Service?
- Ontario Pool Service has not published a phone number here, and its own website is linked above. Its posted hours have it open 6 days a week, starting Monday at 9 a.m.
What does Ontario Pool Service charge for pool construction?
- Ontario Pool Service sets its own prices and does not publish them. As a market benchmark, standard inground pool, what most toronto homeowners spend runs $60,000 to $130,000 per project (CAD) across the GTA according to Easy Pools (Toronto, 2026), before Ontario HST.