65/100CR Score
Ranked #1 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
Best Plumbers in San Dimas, CA (2026)
1,049 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in San Dimas: Rooter Hero Plumbing & Air, CR Score 65/100; 4.9★ from 1,637 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Top Notch Plumbing Inc., posts 24/7 hours; ranked #2 of 1,049.
- 48
Most-reviewed: All Pro Cooling, Heating, Plumbing & Electrical, 7,425 Google reviews at 4.8★, the most of 1,049 ranked; ranked #48.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,049 San Dimas plumbers are ranked here by CR Score, from ten published factors. 550 are open 24/7, 862 open Saturdays and 679 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,049 rated businesses.
Top 10 plumbers in San Dimas at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Rooter Hero Plumbing & Air | 65 | 4.9★ (1,637) | Pomona, 4 mi away | 24/7 | Overall |
| 2 | Top Notch Plumbing Inc. | 64 | 5.0★ (515) | Covina, 4 mi away | 24/7 | Emergencies |
| 3 | 24 Rooter & Plumbing, Inc. | 63 | 5.0★ (346) | Claremont, 4 mi away | 24/7 | — |
| 4 | JB Plumbing | 63 | 4.8★ (396) | San Dimas | 24/7 | — |
| 5 | Alpine Plumbing, Heating, and Air | 63 | 4.9★ (743) | San Dimas | Sat · Sun | — |
| 6 | Rooter Hero Plumbing & Air of San Gabriel Valley | 63 | 4.9★ (926) | Diamond Bar, 8 mi away | 24/7 | — |
| 7 | High Speed Plumbing | 63 | 4.8★ (542) | Pomona, 4 mi away | 24/7 | — |
| 8 | Option One Plumbing | 63 | 4.8★ (3,017) | Rancho Cucamonga, 14 mi away | 24/7 | — |
| 9 | Isaac & Sons Plumbing San Dimas | 63 | 5.0★ (124) | San Dimas | 24/7 | — |
| 10 | Western Rooter & Plumbing | 63 | 4.9★ (1,562) | Arcadia, 13 mi away | 24/7 | — |
The 1,049 best plumbers in San Dimas, 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 Covina, 4 mi away
64/100CR ScoreRanked #2 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
Based in Claremont, 4 mi away
63/100CR ScoreRanked #3 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
#4 JB Plumbing
Based in San Dimas
63/100CR ScoreRanked #4 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 San Dimas
63/100CR ScoreRanked #5 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 Diamond Bar, 8 mi away
63/100CR ScoreRanked #6 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
Based in Pomona, 4 mi away
63/100CR ScoreRanked #7 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 Rancho Cucamonga, 14 mi away
63/100CR ScoreRanked #8 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 San Dimas
63/100CR ScoreRanked #9 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
Based in Arcadia, 13 mi away
63/100CR ScoreRanked #10 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 Upland, 8 mi away
63/100CR ScoreRanked #11 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 Anaheim, 17 mi away
62/100CR ScoreRanked #12 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 Rancho Cucamonga, 10 mi away
62/100CR ScoreRanked #13 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 Glendora, 4 mi away
62/100CR ScoreRanked #14 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 Upland, 8 mi away
62/100CR ScoreRanked #15 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 Covina, 5 mi away
62/100CR ScoreRanked #16 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 Anaheim, 18 mi away
62/100CR ScoreRanked #17 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 Rowland Heights, 9 mi away
62/100CR ScoreRanked #18 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, 12 mi away
61/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 334 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 334 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9350 Base Line Rd ste c, Rancho Cucamonga, CA 91701
Based in Duarte, 11 mi away
61/100CR ScoreRanked #20 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 Avocado Heights, 6 mi away
61/100CR ScoreRanked #21 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
Based in Glendora, 4 mi away
61/100CR ScoreRanked #22 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 Pomona, 5 mi away
61/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 131 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 131 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 300 S Park Ave Suite 825, Pomona, CA 91766
#24 Merry Plumbing
Based in San Marino, 17 mi away
61/100CR ScoreRanked #24 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 Rancho Cucamonga, 12 mi away
61/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 262 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 262 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9328 Foothill Blvd, Rancho Cucamonga, CA 91730
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 1,049 ranked plumbers here; the rest are on their profiles.
Also serving San Dimas
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 |
|---|---|---|
| Accurate Electric, Plumbing, Heating and Air | 4.9★ (951) | 5 mi |
| AK Plumbing | 5.0★ (70) | 2 mi |
| All Rooter Solutions | 5.0★ (2) | 9 mi |
| Count-on Plumbing | 5.0★ (2) | 4 mi |
| Currier Plumbing | 5.0★ (2) | 6 mi |
| Divine Remodels & More | 5.0★ (2) | 13 mi |
| Dorsey Plumbing Inc | In San Dimas | |
| High Speed Rooter & Plumbing | 4.8★ (362) | 14 mi |
| Hydro Backflow | 5.0★ (2) | 5 mi |
| Hydro Brothers Jetter & Drains | 4.9★ (59) | 4 mi |
| JB Plumbing | 4.5★ (2) | 4 mi |
| JC Plumbing Inc. | 5.0★ (2) | 5 mi |
| My San Dimas Plumber Hero | In San Dimas | |
| Orange Coast Pipe | 5.0★ (2) | 6 mi |
| P & P PLUMBING COMPANY | 1.0★ (2) | 8 mi |
| Robinson's Mechanical Construction | 4.0★ (2) | 7 mi |
| Showtime-Vince Ruiz Plumbing | 4.5★ (2) | 10 mi |
| Sutton Plumbing | In San Dimas | |
| Tankless Water Heater & Plumbing | 5.0★ (2) | 14 mi |
| Tankless Water heater Repair & Plumbing | 5.0★ (2) | 13 mi |
How much do plumbers cost in San Dimas?
National price ranges in USD, not adjusted for San Dimas. 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 San Dimas plumbers
We scored 1,049 San Dimas 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 San Dimas 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 San Dimas: frequently asked questions
Who is the best plumber in San Dimas?
By CR Score, the highest-ranked plumber in San Dimas, CA is Rooter Hero Plumbing & Air with a CR Score of 65/100. It has 4.9★ from 1,637 Google reviews. It is open 24/7. Top Notch Plumbing Inc. (#2) and 24 Rooter & Plumbing, Inc. (#3) follow. We ranked 1,049 plumbers on ten factors, last updated October 22, 2026.
How many plumbers are there in San Dimas?
ContractorsRanked ranks 1,049 plumbers serving San Dimas, CA. 3 of them are based in San Dimas; 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 San Dimas are open 24/7?
550 ranked plumbers in San Dimas post 24/7 hours. The highest-ranked are Rooter Hero Plumbing & Air (#1), Top Notch Plumbing Inc. (#2) and 24 Rooter & Plumbing, Inc. (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which plumbers in San Dimas work on weekends?
862 of 1,049 ranked plumbers post Saturday hours and 679 post Sunday hours. The highest-ranked open Saturdays are Rooter Hero Plumbing & Air (#1), Top Notch Plumbing Inc. (#2) and 24 Rooter & Plumbing, Inc. (#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 San Dimas?
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 San Dimas. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do San Dimas plumbers have?
The median Google rating among 1,049 rated plumbers in San Dimas is 4.9★, with a median of 22 reviews. All Pro Cooling, Heating, Plumbing & Electrical has the most, 7,425 reviews, and ranks #48. 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 San Dimas
- October 2026: CR Scores recalculated for 1,049 plumbers serving San Dimas.
- October 2026: 9 duplicate listings merged.
More plumbers and San Dimas pages
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Other trades in San Dimas
- Roofers in San Dimas1961 ranked
- Electricians in San Dimas730 ranked
- HVAC contractors in San Dimas1096 ranked
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- Painters in San Dimas146 ranked
- Landscapers in San Dimas167 ranked
- Handymen in San Dimas84 ranked
- Kitchen remodelers in San Dimas475 ranked
- Bathroom remodelers in San Dimas481 ranked
- Flooring contractors in San Dimas429 ranked
- Tile installers in San Dimas62 ranked
- Drywall contractors in San Dimas20 ranked
- Concrete contractors in San Dimas302 ranked
- Fence contractors in San Dimas232 ranked
- Deck builders in San Dimas101 ranked
- Siding contractors in San Dimas123 ranked
- Window installers in San Dimas676 ranked
- Gutter installers in San Dimas139 ranked
- Insulation contractors in San Dimas158 ranked
- Solar installers in San Dimas605 ranked
- Garage door repair companies in San Dimas194 ranked
- Foundation repair companies in San Dimas227 ranked
- Tree services in San Dimas288 ranked
- Masonry contractors in San Dimas181 ranked
- Water damage restoration companies in San Dimas1295 ranked
- Home builders in San Dimas808 ranked
- Demolition contractors in San Dimas119 ranked
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