64/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 515 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 515 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4903 N Vecino Dr, Covina, CA 91722
Best Plumbers in Glendora, CA (2026)
1,052 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Glendora: Top Notch Plumbing Inc., CR Score 64/100; 5.0★ from 515 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Rooter Hero Plumbing & Air, posts 24/7 hours; ranked #2 of 1,052.
- 15
Most-reviewed: Barker and Sons Plumbing & Rooter, 3,896 Google reviews at 4.8★, the most of 1,052 ranked; ranked #15.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,052 Glendora plumbers are ranked here by CR Score, from ten published factors. 530 are open 24/7, 863 open Saturdays and 673 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,052 rated businesses.
Top 10 plumbers in Glendora at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Top Notch Plumbing Inc. | 64 | 5.0★ (515) | Covina, 3 mi away | 24/7 | Overall |
| 2 | Rooter Hero Plumbing & Air | 64 | 4.9★ (1,637) | Pomona, 8 mi away | 24/7 | Emergencies |
| 3 | Western Rooter & Plumbing | 64 | 4.9★ (1,562) | Arcadia, 9 mi away | 24/7 | — |
| 4 | Good News Plumbing & Drain | 63 | 4.9★ (237) | Glendora | 24/7 | — |
| 5 | Rooter Hero Plumbing & Air of San Gabriel Valley | 63 | 4.9★ (926) | Diamond Bar, 10 mi away | 24/7 | — |
| 6 | JB Plumbing | 63 | 4.8★ (396) | San Dimas, 3 mi away | 24/7 | — |
| 7 | 24 Rooter & Plumbing, Inc. | 63 | 5.0★ (346) | Claremont, 7 mi away | 24/7 | — |
| 8 | Alpine Plumbing, Heating, and Air | 62 | 4.9★ (743) | San Dimas, 4 mi away | Sat · Sun | — |
| 9 | Monkey Wrench Plumbing, Heating, Air & Electric | 62 | 4.9★ (253) | Covina, 4 mi away | 24/7 | — |
| 10 | SWE Sewer Solutions Construction & Engineering | 62 | 4.9★ (120) | Glendora | 24/7 | — |
The 1,052 best plumbers in Glendora, 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 Pomona, 8 mi away
64/100CR ScoreRanked #2 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 Arcadia, 9 mi away
64/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 1,562 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 1,562 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 136 E Santa Clara St #1, Arcadia, CA 91006
Based in Glendora
63/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 237 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 237 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 310 W Mountain View Ave Ste 4, Glendora, CA 91741
Based in Diamond Bar, 10 mi away
63/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 926 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 926 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1370 Valley Vista Dr Suite 200A, Diamond Bar, CA 91765
#6 JB Plumbing
Based in San Dimas, 3 mi away
63/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 396 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 396 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 515 W Allen Ave #13, San Dimas, CA 91773
Based in Claremont, 7 mi away
63/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 346 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 346 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3628 Lynoak Dr #201, Claremont, CA 91711
Based in San Dimas, 4 mi away
62/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 743 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 743 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat–Sun 8 AM–5 PM
- Address
- 462 Borrego Ct, San Dimas, CA 91773
Based in Covina, 4 mi away
62/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 253 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 253 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 599 S Barranca Ave Suite L-107, Covina, CA 91723
Based in Glendora
62/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 120 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 120 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 220 S Glendora Ave ste a, Glendora, CA 91741
Based in Duarte, 8 mi away
62/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 276 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 276 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 454 Shrode Ave, Duarte, CA 91010
Based in Pomona, 7 mi away
62/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.8★ from 542 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 542 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 111 E Arrow Hwy, Pomona, CA 91767
Based in Glendora
62/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 77 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 77 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 165 Calder Dr, Glendora, CA 91741
Based in Rancho Cucamonga, 17 mi away
62/100CR ScoreRanked #14 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 Anaheim, 19 mi away
62/100CR ScoreRanked #15 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 San Dimas, 4 mi away
62/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 124 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 124 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 440 S Cataract Ave suite j, San Dimas, CA 91773
#17 Merry Plumbing
Based in San Marino, 14 mi away
62/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 652 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 652 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1465 San Marino Ave, San Marino, CA 91108
Based in Monrovia, 8 mi away
62/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 266 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 266 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 222 E Foothill Blvd, Monrovia, CA 91016
Based in Upland, 12 mi away
62/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 1,726 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 1,726 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 260 N Corporate Way, Upland, CA 91786
Based in Rowland Heights, 10 mi away
61/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 375 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 375 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 18633 Gale Ave Ste 105, Rowland Heights, CA 91748
Based in Rancho Cucamonga, 14 mi away
61/100CR ScoreRanked #21 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 Upland, 11 mi away
61/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 302 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 302 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 517 N Mountain Ave, Upland, CA 91786
Based in Anaheim, 19 mi away
61/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 1,063 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 1,063 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2921 E Miraloma Ave #17, Anaheim, CA 92806
Based in Covina, 3 mi away
61/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.8★ from 387 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 387 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 601 E Edna Pl, Covina, CA 91723
Based in Avocado Heights, 8 mi away
61/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 130 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 130 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
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 1,052 ranked plumbers here; the rest are on their profiles.
Also serving Glendora
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 |
|---|---|---|
| AAA Plumbing USA | 5.0★ (2) | 15 mi |
| Accurate Electric, Plumbing, Heating and Air | 4.9★ (951) | In Glendora |
| AK Plumbing | 5.0★ (70) | 6 mi |
| All Rooter Solutions | 5.0★ (2) | 8 mi |
| Count-on Plumbing | 5.0★ (2) | In Glendora |
| Currier Plumbing | 5.0★ (2) | 10 mi |
| Harrison Brothers Plumbing | 4.8★ (143) | 10 mi |
| Hydro Backflow | 5.0★ (2) | 4 mi |
| IRC PLUMBING INC | 5.0★ (2) | 14 mi |
| JB Plumbing | 4.5★ (2) | 7 mi |
| JC Plumbing Inc. | 5.0★ (2) | 5 mi |
| Jcs Plumbing & Backflow Services | 5.0★ (1) | In Glendora |
| Know How Plumbing | 4.5★ (2) | 13 mi |
| Orange Coast Pipe | 5.0★ (2) | 10 mi |
| P & P PLUMBING COMPANY | 1.0★ (2) | 12 mi |
| Pre Cast Drain Box | 5.0★ (2) | 13 mi |
| Robinson's Mechanical Construction | 4.0★ (2) | 11 mi |
| Showtime-Vince Ruiz Plumbing | 4.5★ (2) | 9 mi |
| Tankless Water heater Repair & Plumbing | 5.0★ (2) | 10 mi |
| The Handyman Can Co | In Glendora |
How much do plumbers cost in Glendora?
National price ranges in USD, not adjusted for Glendora. 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 Glendora plumbers
We scored 1,052 Glendora 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 23, 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 Glendora 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 Glendora: frequently asked questions
Who is the best plumber in Glendora?
By CR Score, the highest-ranked plumber in Glendora, CA is Top Notch Plumbing Inc. with a CR Score of 64/100. It has 5.0★ from 515 Google reviews. It is open 24/7. Rooter Hero Plumbing & Air (#2) and Western Rooter & Plumbing (#3) follow. We ranked 1,052 plumbers on ten factors, last updated October 23, 2026.
How many plumbers are there in Glendora?
ContractorsRanked ranks 1,052 plumbers serving Glendora, CA. 4 of them are based in Glendora; 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 Glendora are open 24/7?
530 ranked plumbers in Glendora post 24/7 hours. The highest-ranked are Top Notch Plumbing Inc. (#1), Rooter Hero Plumbing & Air (#2) and Western Rooter & Plumbing (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which plumbers in Glendora work on weekends?
863 of 1,052 ranked plumbers post Saturday hours and 673 post Sunday hours. The highest-ranked open Saturdays are Top Notch Plumbing Inc. (#1), Rooter Hero Plumbing & Air (#2) and Western Rooter & Plumbing (#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 Glendora?
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 Glendora. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Glendora plumbers have?
The median Google rating among 1,052 rated plumbers in Glendora is 4.9★, with a median of 21 reviews. Barker and Sons Plumbing & Rooter has the most, 3,896 reviews, and ranks #15. 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 Glendora
- October 2026: CR Scores recalculated for 1,052 plumbers serving Glendora.
- October 2026: 8 duplicate listings merged.
More plumbers and Glendora pages
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