Top 50 of 937 plumbers, in emergency orderUpdated 0 paid placements in this rankingHow we rank
25 of the 50 plumbers on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.
#1 for emergency plumbing in Ontario: Option One Plumbing, open 24/7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
| Rank | Business | CR Score | Google rating | Based in | Hours |
|---|---|---|---|---|---|
| 1 | Option One Plumbing | 65 | 4.8★ (3,017) | Rancho Cucamonga, 5 mi away | 24/7 |
| 2 | Rooter Hero Plumbing & Air | 65 | 4.9★ (1,637) | Pomona, 5 mi away | 24/7 |
| 3 | All Pro Cooling, Heating, Plumbing & Electrical | 64 | 4.8★ (7,425) | Ontario | 24/7 |
| 4 | Scott McLeod Plumbing, Inc. | 64 | 4.9★ (756) | Rancho Cucamonga, 3 mi away | 24/7 |
| 5 | Redhead Rooter Plumbing Drain Cleaning & Hydrojetting | 64 | 5.0★ (302) | Upland, 3 mi away | 24/7 |
| 6 | Bow Tie Plumbing & Rooter | 63 | 5.0★ (334) | Rancho Cucamonga, 5 mi away | 24/7 |
| 7 | 24 Rooter & Plumbing, Inc. | 63 | 5.0★ (346) | Claremont, 6 mi away | 24/7 |
| 8 | High Speed Plumbing | 63 | 4.8★ (542) | Pomona, 6 mi away | 24/7 |
| 9 | Ramco Plumbing Heating & Air | 63 | 5.0★ (262) | Rancho Cucamonga, 4 mi away | 24/7 |
| 10 | AS Plumbing Mechanical | 63 | 5.0★ (618) | Fontana, 10 mi away | 24/7 |
24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.
Open 24/7 · 4.8 from 3,017 Google reviews
Open 24/7 · 4.9 from 1,637 Google reviews
#3All Pro Cooling, Heating, Plumbing & Electrical
Open 24/7 · 4.8 from 7,425 Google reviews
Open 24/7 · 4.9 from 756 Google reviews
#5Redhead Rooter Plumbing Drain Cleaning & Hydrojetting
Open 24/7 · 5.0 from 302 Google reviews
Open 24/7 · 5.0 from 334 Google reviews
Open 24/7 · 5.0 from 346 Google reviews
Open 24/7 · 4.8 from 542 Google reviews
24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 937 is on the plumbers page.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 3,017 Google reviews, listed on Google as “Plumber”.
Based in Pomona, 5 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 1,637 Google reviews, listed on Google as “Plumber”.
Based in Ontario
Ranked #3 because of its Google rating and review volume: 4.8★ from 7,425 Google reviews.
Based in Rancho Cucamonga, 3 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 756 Google reviews, listed on Google as “Plumber”.
Based in Upland, 3 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 302 Google reviews, listed on Google as “Plumber”.
Based in Rancho Cucamonga, 5 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 334 Google reviews, listed on Google as “Plumber”.
Based in Claremont, 6 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 346 Google reviews, listed on Google as “Plumber”.
Based in Pomona, 6 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 542 Google reviews, listed on Google as “Plumber”.
Based in Rancho Cucamonga, 4 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 262 Google reviews, listed on Google as “Plumber”.
Based in Fontana, 10 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 618 Google reviews, listed on Google as “Plumber”.
Based in Anaheim, 17 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 3,896 Google reviews, listed on Google as “Plumber”.
Based in Rancho Cucamonga, 4 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 229 Google reviews, listed on Google as “Plumber”.
Based in Upland, 3 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 319 Google reviews, listed on Google as “Plumber”.
Based in Rancho Cucamonga, 6 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 354 Google reviews, listed on Google as “Plumber”.
Based in Ontario
Ranked #15 because of its Google rating and trade focus: 5.0★ from 109 Google reviews, listed on Google as “Plumber”.
Based in Ontario
Ranked #16 because of its Google rating and trade focus: 5.0★ from 114 Google reviews, listed on Google as “Plumber”.
Based in Diamond Bar, 12 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 926 Google reviews, listed on Google as “Plumber”.
Based in Rancho Cucamonga, 5 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 219 Google reviews, listed on Google as “Plumber”.
Based in Ontario
Ranked #19 because of its Google rating and trade focus: 4.8★ from 121 Google reviews, listed on Google as “Plumber”.
Based in Corona, 12 mi away
Ranked #20 because of its Google rating and trade focus: 4.8★ from 936 Google reviews, listed on Google as “Plumber”.
Based in Rancho Cucamonga, 4 mi away
Ranked #21 because of its Google rating and trade focus: 4.7★ from 220 Google reviews, listed on Google as “Plumber”.
Based in Upland, 4 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 147 Google reviews, listed on Google as “Plumber”.
Based in Fontana, 12 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 592 Google reviews, listed on Google as “Plumber”.
Based in Rancho Cucamonga, 5 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 226 Google reviews, listed on Google as “Plumber”.
Based in Ontario
Ranked #25 because of its Google rating and review volume: 4.8★ from 1,330 Google reviews.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.
Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 plumbers are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from |
|---|---|---|
| Reputation | 15% | Google star rating, adjusted for how many reviews back it |
| Credentials | 15% | Active state license, bond and workers’ comp on file |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list |
| Recency | 5% | Share of reviews from the last 12 months |
| Availability | 15% | Weekly open hours, Saturday, Sunday, 24/7 or same-day |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) |
| Proximity | 5% | Based in the city scores highest, less the farther away it is |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are |