Ultimate Pool Service
“We've been doing business with Ultimate for years - everything from pool openings/closing to purchasing and installing new equipment - and they always over deliver.”
Best Pool Service & Cleaning Companies in Oakville, ON
24 contractors listed · 7 in Oakville · 1 open 24/7 · 13 open weekends · 19 rated 4.5+
Data verified October 18, 2026
Crush Pools
“Greg, the owner, gets personally involved with any issue that is more serious than regular maintenance, and Luc, the tech, left our pool sparkling every week this season.”
Total Tech Pools and Leisure
“My pool cover locks in and i had 6 bags worth of leaves pulled off the winter cover and they drained the pool and did not allow any debris or dirty water into the clean pool.”
Pressure Clean Pools
“While looking after my Brother's pool opening in May, 2024 while he and his partner were on holiday, I had the absolute pleasure of communicating with Joseph, Christine behind the scenes who kept me in the loop arranging the 2 cleanings ( an extra my...”
Trident Pool Leak Detection
“Very reasonable pricing, they were there next day, not a two week appointment and were both fantastic throughout the whole process of finding a very challenging leak!”
Efficient Pools Ltd.
“Kaitlin, Kiel, Julian, and Brent have all been very professional in every interaction and shown a keen willingness to help us through any challenges we've faced so far.”
The 24 contractors listed for Oakville, ON handle in-season care along with openings and closings. Book the closing early. The weeks when the weather turns are the same weeks every pool owner is trying to get on the same schedule.
Area overview: Oakville, ON
7 of the 24 contractors we list are based in Oakville; the other 17 serve Oakville from towns including Mississauga (17 km), Burlington (18 km) and Milton (17 km). The contractors on this page are rated from 4.0 to 5.0 across 1,436 reviews; 8 have 50 or more reviews and 19 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise responsiveness (83%), professionalism (82%) and quality (76%). The topics that come up most in reviews of the contractors on this page are "price", "knowledge" and "communication". 1 is open around the clock; 13 are open on Saturdays and 8 on Sundays. The services the contractors on this page list most often on their websites are pool closings (4), pool inspections (4), pool openings (4), safety covers (4) and cartridge cleaning (2). Domain records put 11 websites of the contractors on this page at ten or more years old; the oldest dates from 1998. 1 offers emergency call-outs; 1 offers financing or payment plans; 6 give free estimates; 2 are family- or locally-owned and 4 list coupons or special offers. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.
Do pool cleaning companies have to be based in Oakville?
7 of the 24 listings are based in Oakville and the rest fall within 35 km. Ask whether your address sits on an existing route. A pool at the far edge of a service area tends to slip to the end of the day.
Burloak Pool Service
“The best opening we've ever had.”
Impeccable Pools
“If anyone is looking for the BEST prices, BEST service and BEST workmanship the I suggest you contact Impeccable Pools for all your pool needs, they've earned my lifetime business.”
DHS Systems Inc.
“Had a pentair warranty and they sent DHS.”
Lakeshore Pools and Hot Tubs
“I will definitely be recommending this establishment to anyone in need of a hot tub repair and will certainly be using their services in the future should need be.”
Pool Kings
“Kyle and his team continue to do fantastic work and our family highly recommends them to anyone looking for a high quality pool service they can trust.”
Premier Pool Group
“And when I asked them to vacuum out some construction debris before the closing they happily obliged and sent Jeffrey who took care of of it with a big smile on his face.”
Gib-San Pool and Hot Tub Centre
“The on-site pool chemistry analysis and diagnostic treatment recommendation is a great save whenever you can't quite figure out the proper chem balance.”
Dream Pools Ltd.
“Having explored numerous options, including some of the most well-known names in the industry, none compared to the exceptional experience provided by Sterling and the team.”
Aquanaut Pool Services
“From setting the chemicals to maintenance work my family has enjoyed our first summer in our new house and started to build many memories in our comfortable family pool!”
Rainbow Leisurescapes
“Maybe allow yourself a little more time to visit the shop during business hours or buy in larger quantities before the weekend and get to know the store staff better, they're good people.”
Poolin' Around
“Unfortunately our pump will likely need replacement and since it is less than 5 years old Paul suggested we contact the install company to have it replaced under warranty.”
Austin Carroll Pool Construction Ltd
“Professional to work with on numerous projects.”
Pool Mechanix LTD
“If you are a first time pool/spa owner, or have had any for a long time, Greg will always take the time to explain his work and any recommendations he has to maximize your items' longevity.”
Vinyl Masters Inc.
“Thank you to Scott for finding the leak, Brian for fixing it and responding so quickly to my calls and to Holly who made spending so much money that much easier!”
J A F Pool Service Ltd
“We are retiring now and sold the house definitely be telling the new owners about John's pool service John thank you for your service and i wish nothing but the best to you and your family”
Schwimmer Pool Service
“After 3 days of patiently helping me over the phone and sending a crew out they were able to get my pool back to crystal clear blue, and the fee was extremely fair!”
Aquastar Pool Services
Gta Pool Service
“Has been doing my pool since I moved into the house 4 years ago”
Why these companies made our list
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