1,431 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Altadena: Western Rooter & Plumbing, CR Score 64/100; 4.9★ from 1,562 Google reviews; open 24/7.
Best for emergencies (open 24/7): Merry Plumbing, posts 24/7 hours; ranked #2 of 1,431.
Most-reviewed: Rooter Hero Plumbing & Air, 1,637 Google reviews at 4.9★, the most of 1,431 ranked; ranked #36.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,431 Altadena plumbers are ranked here by CR Score, from ten published factors. 739 are open 24/7, 1,175 open Saturdays and 940 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,431 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Western Rooter & Plumbing | 64 | 4.9★ (1,562) | Arcadia, 7 mi away | 24/7 | Overall |
| 2 | Merry Plumbing | 64 | 5.0★ (652) | San Marino, 5 mi away | 24/7 | Emergencies |
| 3 | Roto-Rooter Plumbing & Water Cleanup | 64 | 4.9★ (736) | Pasadena, 3 mi away | 24/7 | — |
| 4 | Free Flo Rooter & Plumbing | 64 | 5.0★ (584) | Altadena | Sat · Sun · Evenings | — |
| 5 | Roto-Rooter Plumbing & Water Cleanup | 63 | 4.8★ (1,128) | Alhambra, 8 mi away | 24/7 | — |
| 6 | Roto-Rooter Plumbing & Water Cleanup | 63 | 4.9★ (682) | Glendale, 8 mi away | 24/7 | — |
| 7 | Advantage Plumbing & Rooter | 63 | 5.0★ (305) | Glendale, 6 mi away | 24/7 | — |
| 8 | Water Heaters Only, Inc. | 62 | 4.9★ (720) | Tujunga, 10 mi away | 24/7 | — |
| 9 | Monkey Wrench Plumbing, Heating, Air & Electric | 62 | 4.8★ (269) | Pasadena, 3 mi away | 24/7 | — |
| 10 | Casey & Sons Plumbing & Electric | 62 | 4.9★ (99) | Altadena | 24/7 | — |
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.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 1,562 Google reviews, listed on Google as “Plumber”.
Based in San Marino, 5 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 652 Google reviews, listed on Google as “Plumber”.
Based in Pasadena, 3 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 736 Google reviews, listed on Google as “Plumber”.
Based in Altadena
Ranked #4 because of its Google rating and trade focus: 5.0★ from 584 Google reviews, listed on Google as “Plumber”.
Based in Alhambra, 8 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 1,128 Google reviews, listed on Google as “Plumber”.
Based in Glendale, 8 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 682 Google reviews, listed on Google as “Plumber”.
Based in Glendale, 6 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 305 Google reviews, listed on Google as “Plumber”.
Based in Tujunga, 10 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 720 Google reviews, listed on Google as “Plumber”.
Based in Pasadena, 3 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 269 Google reviews, listed on Google as “Plumber”.
Based in Altadena
Ranked #10 because of its Google rating and trade focus: 4.9★ from 99 Google reviews, listed on Google as “Plumber”.
Based in Duarte, 9 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 276 Google reviews, listed on Google as “Plumber”.
Based in Los Angeles, 9 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 383 Google reviews, listed on Google as “Plumber”.
Based in Pasadena, 3 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 131 Google reviews, listed on Google as “Plumber”.
Based in Burbank, 12 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 556 Google reviews, listed on Google as “Plumber”.
Based in Los Angeles, 12 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 1,494 Google reviews, listed on Google as “Plumber”.
Based in Monrovia, 8 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 266 Google reviews, listed on Google as “Plumber”.
Based in La Cañada Flintridge, 5 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 133 Google reviews, listed on Google as “Plumber”.
Based in Altadena
Ranked #18 because of its Google rating and trade focus: 5.0★ from 130 Google reviews, listed on Google as “Plumber”.
Based in Arcadia, 7 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 182 Google reviews, listed on Google as “Plumber”.
Based in El Monte, 9 mi away
Ranked #20 because of its Google rating and trade focus: 4.8★ from 362 Google reviews, listed on Google as “Plumber”.
Based in Studio City, 15 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 1,036 Google reviews, listed on Google as “Plumber”.
Based in Altadena
Ranked #22 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Plumber”.
Based in Covina, 16 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 515 Google reviews, listed on Google as “Plumber”.
Based in Glendale, 8 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 195 Google reviews, listed on Google as “Plumber”.
Based in North Hollywood, 13 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 551 Google reviews, listed on Google as “Plumber”.
#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 1,431 ranked plumbers here; the rest are on their profiles.
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) | 2 mi |
| AH Repipe and Plumbing | In Altadena | |
| Carpinteria Pro Plumbers | In Altadena | |
| Contracting Solutions | 5.0★ (1) | In Altadena |
| Discounted Rooter, Pasadena CA | In Altadena | |
| DropStars Plumbing Burbank | 4.9★ (196) | 11 mi |
| Dynamite Plumbing | 5.0★ (2) | 5 mi |
| E & J plumbing Inc | In Altadena | |
| freelance digital marketing | In Altadena | |
| Hillside Construction | In Altadena | |
| Martinez General Plumbing | In Altadena | |
| Papa's Plumbing Inc. | 4.8★ (118) | 8 mi |
| Pershing Plumbing - Pasadena Plumbing Company | 5.0★ (2) | In Altadena |
| Plumbing Professionals | 5.0★ (23) | In Altadena |
| Plumbing Savers | In Altadena | |
| Rapid Rhino Plumbing | 4.9★ (82) | 8 mi |
| Steve's HVAC & Water Heater Repair | 5.0★ (9) | In Altadena |
| The Cauldron Water Heaters | 5.0★ (2) | 6 mi |
| The Sewer Company | 4.9★ (215) | 3 mi |
| Top Repipe Plumber Pasadena CA | 5.0★ (53) | In Altadena |
National price ranges in USD, not adjusted for Altadena. 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 |
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).
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
We scored 1,431 Altadena 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 Altadena 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 |