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Dependable Rooter & Plumbing
#1 in Ontario
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Top 10 Best Plumbers in Ontario, CA
Ranked by Google ratings, review quality, and response time. Updated April 2026.
Google ratings onlyUpdated hourlyMin 3 reviews required
Ranked by Google ratings, review quality, and response time. Updated April 2026.
8400 Maple Pl #107, Rancho Cucamonga, CA 91730, USA, Ontario, CA 91730
Why they ranked: Our top-ranked pick with an exceptional 5-star rating across 510 Google reviews.
3200 E Guasti Rd Suite 100, Ontario, CA 91761, USA, Ontario, CA 91761
Why they ranked: A close runner-up with an exceptional 5-star rating across 436 Google reviews.
517 N Mountain Ave, Upland, CA 91786, USA, Ontario, CA 91786
Why they ranked: Ranked #3 with an exceptional 5-star rating across 314 Google reviews.
10709 Vernon Ave, Ontario, CA 91762, USA, Ontario, CA 10709
Why they ranked: Ranked #4 with an exceptional 5-star rating across 259 Google reviews.
3200 E Guasti Rd Suite 100-G, Ontario, CA 91761, USA, Ontario, CA 91761
Why they ranked: Ranked #5 with an exceptional 5-star rating across 117 Google reviews.
9431 Haven Ave #100, Rancho Cucamonga, CA 91730, USA, Ontario, CA 91730
Why they ranked: Ranked #6 with an exceptional 5-star rating across 73 Google reviews.
615 N Euclid Ave suite 843, Ontario, CA 91762, USA, Ontario, CA 91762
Why they ranked: Ranked #7 with an exceptional 5-star rating from 40 reviews.
260 N Corporate Way, Upland, CA 91786, USA, Ontario, CA 91786
Why they ranked: Ranked #8 with an exceptional 4.9-star rating across 1753 Google reviews.
665 N Central Ave, Upland, CA 91786, USA, Ontario, CA 91786
Why they ranked: Ranked #9 with an exceptional 4.9-star rating across 1441 Google reviews.
5623 E Arrow Hwy, Montclair, CA 91763, USA, Ontario, CA 91763
Why they ranked: Ranked #10 with an exceptional 4.9-star rating across 992 Google reviews.
Rating Score (50%) — Average star rating from Google customer reviews.
Review Volume (30%) — Number of Google reviews. More reviews = greater confidence.
Response Time (20%) — Faster response times earn higher rankings.
Only businesses with 3+ reviews are eligible. Rankings refresh every hour. Paid listings do not influence ranking order.
Dependable Rooter & Plumbing currently holds the top spot with a 5-star rating across 510 reviews.
No. Paid tiers get additional profile features, but ranking order is determined solely by ratings, reviews, and response time.
List your business and accumulate at least 3 Google reviews. Rankings are automatic and updated hourly.
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