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24 contractors listed · 5 in Ontario · 2 open 24/7 · 17 open weekends · all 24 rated 4.5+
Data verified October 15, 2026
The 24 contractors listed for Ontario, CA look after pools that are already in the ground. Ask what the routine visit covers and what is billed apart from it, since chemicals, filter cleans and equipment repairs are often quoted separately from the route price.
5 of the 24 contractors we list are based in Ontario; the other 19 serve Ontario from towns including Rancho Cucamonga (6 mi), Riverside (14 mi) and Upland (6 mi). The contractors on this page are rated from 4.5 to 5.0 across 1,178 reviews; 9 have 50 or more reviews. When customers rate these contractors on specific qualities, they most often praise professionalism (92%), quality (89%) and responsiveness (84%). The topics that come up most in reviews of the contractors on this page are "price", "estimates" and "communication". 2 are open around the clock; 17 are open on Saturdays and 9 on Sundays. 10 show a license on their websites and 4 have a BBB rating of A or A+. 17 have ten or more years of experience, the longest 38 years. 2 offer emergency call-outs; 1 offers financing or payment plans; 13 give free estimates; 4 are family- or locally-owned and 2 list coupons or special offers. We have a website on file for 22 of the contractors on this page; 20 publish a contact page; 13 list a public email and 2 take bookings online. 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.
5 of the 24 listings are based in Ontario and the rest fall within 20 mi. Routes matter more than addresses in this trade: what you want to know is whether your street is on a scheduled run or a special trip.
