64/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 936 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 936 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1501 Railroad St, Corona, CA 92878
Best Plumbers in Norco, CA (2026)
1,111 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Norco: Roto-Rooter Plumbing & Water Cleanup, CR Score 64/100; 4.8★ from 936 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Amazing Force Plumbing & Backflow LLC, posts 24/7 hours; ranked #2 of 1,111.
- 25
Most-reviewed: All Pro Cooling, Heating, Plumbing & Electrical, 7,425 Google reviews at 4.8★, the most of 1,111 ranked; ranked #25.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,111 Norco plumbers are ranked here by CR Score, from ten published factors. 562 are open 24/7, 889 open Saturdays and 683 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,111 rated businesses.
Top 10 plumbers in Norco at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Roto-Rooter Plumbing & Water Cleanup | 64 | 4.8★ (936) | Corona, 4 mi away | 24/7 | Overall |
| 2 | Amazing Force Plumbing & Backflow LLC | 64 | 5.0★ (322) | Corona, 3 mi away | 24/7 | Emergencies |
| 3 | First Class Plumbing & AC | 63 | 4.9★ (784) | Riverside, 7 mi away | 24/7 | — |
| 4 | Option One Plumbing | 63 | 4.8★ (3,017) | Rancho Cucamonga, 12 mi away | 24/7 | — |
| 5 | Infinity Plumbing Designs, Inc. | 63 | 4.9★ (984) | Corona, 10 mi away | 24/7 | — |
| 6 | Plumbing Concepts, Inc. | 63 | 4.9★ (442) | Corona, 5 mi away | 24/7 | — |
| 7 | Circle City Plumbing and Rooter | 63 | 5.0★ (208) | Corona, 4 mi away | 24/7 | — |
| 8 | Barker and Sons Plumbing & Rooter | 62 | 4.8★ (3,896) | Anaheim, 17 mi away | 24/7 | — |
| 9 | Best Service Plumber | 62 | 5.0★ (211) | Corona, 5 mi away | 24/7 | — |
| 10 | OneStop Plumbers - Plumbing and Leak Detection | 62 | 5.0★ (1,615) | Corona, 4 mi away | Sat · Evenings | — |
The 1,111 best plumbers in Norco, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Corona, 3 mi away
64/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 322 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 322 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 791 Allen Dr, Corona, CA 92879
Based in Riverside, 7 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 784 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 784 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9327 Douglas Dr, Riverside, CA 92503
Based in Rancho Cucamonga, 12 mi away
63/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 3,017 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 3,017 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 10722 Arrow Route STE 602, Rancho Cucamonga, CA 91730
Based in Corona, 10 mi away
63/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 984 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 984 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9182 Stellar Ct, Corona, CA 92883
Based in Corona, 5 mi away
63/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 442 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 442 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2445 Railroad St, Corona, CA 92878
Based in Corona, 4 mi away
63/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 208 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 208 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 902 Filbert St, Corona, CA 92879
Based in Anaheim, 17 mi away
62/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.8★ from 3,896 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 3,896 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3900 E Miraloma Ave, Anaheim, CA 92806
Based in Corona, 5 mi away
62/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 211 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 211 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2445 Railroad St Unit #A, Corona, CA 92878
Based in Corona, 4 mi away
62/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 1,615 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 1,615 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat 8 AM–5 PM · Sun closed
- Address
- 125 Business Center Dr h, Corona, CA 92878
Based in Riverside, 7 mi away
62/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 750 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 750 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9345 Narnia Dr, Riverside, CA 92503
Based in Riverside, 4 mi away
62/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 174 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 174 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6139 Zircon Wy, Riverside, CA 92503
Based in Pomona, 15 mi away
62/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 1,637 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 1,637 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2040 N Towne Ave, Pomona, CA 91767
Based in Riverside, 9 mi away
62/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 496 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 496 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6833 Indiana Ave #201, Riverside, CA 92506
Based in Riverside, 8 mi away
62/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 279 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 279 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5198 Arlington Ave #131, Riverside, CA 92503
Based in Fontana, 13 mi away
62/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 618 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 618 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7898 Cherry Ave Ste D, Fontana, CA 92336
Based in Riverside, 6 mi away
62/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 433 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 433 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7710 Limonite Ave # A, Riverside, CA 92509
Based in Corona, 5 mi away
62/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 202 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 202 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1781 Capital St Suite A, Corona, CA 92878
Based in Eastvale, 4 mi away
62/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 133 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 133 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 12502 Breeze Ln, Mira Loma, CA 91752
#20 KDP Plumbing
Based in Norco
62/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 70 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 70 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5502 Roundup Rd, Norco, CA 92860
Based in Riverside, 7 mi away
62/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 274 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 274 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9308 Narnia Dr, Riverside, CA 92503
Based in Rancho Cucamonga, 13 mi away
62/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 756 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 756 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8222 Foothill Blvd, Rancho Cucamonga, CA 91730
Based in Lake Forest, 21 mi away
62/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 2,764 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 2,764 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 19 Spectrum Pointe Dr, Lake Forest, CA 92630
Based in Riverside, 9 mi away
62/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.8★ from 495 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 495 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3579 Arlington Ave #800, Riverside, CA 92506
Based in Ontario, 10 mi away
61/100CR ScoreRanked #25 because of its Google rating and review volume: 4.8★ from 7,425 Google reviews, the most in Norco.
- 4.8★ from 7,425 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5001 Ontario Mills Pkwy, Ontario, CA 91764
Plumbers ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 1,111 ranked plumbers here; the rest are on their profiles.
Also serving Norco
20 more plumbers within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| A.M. Plumbing & Rooter LLC | 5.0★ (2) | 3 mi |
| Cable Pipe & Leak Detection | 4.8★ (79) | 3 mi |
| Campbell Family Plumbing & Electric | 4.9★ (86) | 6 mi |
| Cheap Plumbers And Rooter | In Norco | |
| D&P LEAK DETECTION | 5.0★ (2) | In Norco |
| Eds Plumbing and Rooter | 5.0★ (2) | 4 mi |
| Endo Plumbing Co Inc. | 3.0★ (2) | 5 mi |
| Exact Leak Detection, Inc. | 4.5★ (124) | In Norco |
| G&S Plumbing Company Inc. | In Norco | |
| Gbc Plumbing Co | In Norco | |
| Know How Plumbing | 4.5★ (2) | 12 mi |
| Mr. Rooter Plumbing of The Inland Empire | 4.8★ (588) | 15 mi |
| Pepe El Plomero | 2.0★ (1) | In Norco |
| Perfection Plumbing Inc | 5.0★ (2) | In Norco |
| Pure Plumbing Inc. | 5.0★ (2) | 4 mi |
| Rooter Time Plumbing | 5.0★ (2) | 3 mi |
| Rush Plumbing and Rooter | 1.0★ (2) | 4 mi |
| Salmex Plumbing Services | In Norco | |
| The Fifth Plumbing Riverside Co. | 5.0★ (2) | 13 mi |
| TRUSTED PROS PLUMBING AND DRAINS | 3.0★ (2) | In Norco |
How much do plumbers cost in Norco?
National price ranges in USD, not adjusted for Norco. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Water heater replacement | $882 | $1,348 | $1,826 | Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 2026 |
How to check a plumber's license in California
In California, Contractors State License Board (CSLB) licenses C-36 Plumbing contractor license.
Jobs of $1,000 or more in labor and materials (from January 1, 2025).
- Search the business name or license number on the Contractors State License Board (CSLB) license lookup.
- Check that the status is active and the name matches the contract or truck.
- Ask for proof of insurance before work starts.
No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.
Guide checked October 2026. How we verify licenses
How we ranked Norco plumbers
We scored 1,111 Norco plumbers on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.
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 | In Norco data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Plumbers in Norco: frequently asked questions
Who is the best plumber in Norco?
By CR Score, the highest-ranked plumber in Norco, CA is Roto-Rooter Plumbing & Water Cleanup with a CR Score of 64/100. It has 4.8★ from 936 Google reviews. It is open 24/7. Amazing Force Plumbing & Backflow LLC (#2) and First Class Plumbing & AC (#3) follow. We ranked 1,111 plumbers on ten factors, last updated October 22, 2026.
How many plumbers are there in Norco?
ContractorsRanked ranks 1,111 plumbers serving Norco, CA. 1 of them is based in Norco; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which plumbers in Norco are open 24/7?
562 ranked plumbers in Norco post 24/7 hours. The highest-ranked are Roto-Rooter Plumbing & Water Cleanup (#1), Amazing Force Plumbing & Backflow LLC (#2) and First Class Plumbing & AC (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which plumbers in Norco work on weekends?
889 of 1,111 ranked plumbers post Saturday hours and 683 post Sunday hours. The highest-ranked open Saturdays are Roto-Rooter Plumbing & Water Cleanup (#1), Amazing Force Plumbing & Backflow LLC (#2) and First Class Plumbing & AC (#3). Posted hours are office hours; crews may book weekend jobs separately.
How do I check a plumber's license in California?
In California, Contractors State License Board (CSLB) handles licensing and covers C-36 Plumbing contractor license. Search the business or license number at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx. Jobs of $1,000 or more in labor and materials (from January 1, 2025).
How much does water heater replacement cost in Norco?
Water heater replacement typically costs $882 to $1,826, with $1,348 typical (Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Norco. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Norco plumbers have?
The median Google rating among 1,111 rated plumbers in Norco is 4.9★, with a median of 23 reviews. All Pro Cooling, Heating, Plumbing & Electrical has the most, 7,425 reviews, and ranks #25. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank plumbers?
Each plumber gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Norco
- October 2026: CR Scores recalculated for 1,111 plumbers serving Norco.
- October 2026: 14 duplicate listings merged.
More plumbers and Norco pages
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Other trades in Norco
- Roofers in Norco1269 ranked
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- General contractors in Norco1014 ranked
- Painters in Norco167 ranked
- Landscapers in Norco185 ranked
- Handymen in Norco83 ranked
- Kitchen remodelers in Norco542 ranked
- Bathroom remodelers in Norco532 ranked
- Flooring contractors in Norco511 ranked
- Tile installers in Norco70 ranked
- Drywall contractors in Norco39 ranked
- Concrete contractors in Norco381 ranked
- Fence contractors in Norco217 ranked
- Deck builders in Norco125 ranked
- Siding contractors in Norco94 ranked
- Window installers in Norco577 ranked
- Gutter installers in Norco145 ranked
- Insulation contractors in Norco142 ranked
- Solar installers in Norco485 ranked
- Garage door repair companies in Norco227 ranked
- Foundation repair companies in Norco139 ranked
- Tree services in Norco320 ranked
- Masonry contractors in Norco191 ranked
- Water damage restoration companies in Norco997 ranked
- Home builders in Norco583 ranked
- Demolition contractors in Norco137 ranked
- All contractors in Norco