64/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 493 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 493 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Best Plumbers in San Marcos, CA (2026)
646 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in San Marcos: Proactive Plumbing, Inc., CR Score 64/100; 5.0★ from 493 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Water Heaters Only, Inc, posts 24/7 hours; ranked #2 of 646.
- 13
Most-reviewed: ARS / Rescue Rooter, 4,875 Google reviews at 4.7★, the most of 646 ranked; ranked #13.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
646 San Marcos plumbers are ranked here by CR Score, from ten published factors. 314 are open 24/7, 482 open Saturdays and 373 open Sundays, based on posted hours. The median Google rating is 5.0★ across 646 rated businesses.
Top 10 plumbers in San Marcos at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Proactive Plumbing, Inc. | 64 | 5.0★ (493) | Carlsbad, 4 mi away | 24/7 | Overall |
| 2 | Water Heaters Only, Inc | 64 | 5.0★ (366) | Vista, 3 mi away | 24/7 | Emergencies |
| 3 | Pure Pro Plumbing | 63 | 4.8★ (507) | Vista, 3 mi away | 24/7 | — |
| 4 | Roto-Rooter Plumbing & Water Cleanup | 63 | 4.9★ (352) | Escondido, 4 mi away | 24/7 | — |
| 5 | All American Plumbing Inc. | 63 | 5.0★ (1,470) | Poway, 15 mi away | 24/7 | — |
| 6 | Sherlock Plumbing, Heating & Air | 63 | 4.9★ (4,132) | Carlsbad, 4 mi away | 24/7 | — |
| 7 | Anderson Plumbing, Heating & Air | 63 | 4.8★ (2,810) | San Marcos | 24/7 | — |
| 8 | Colepepper Plumbing | 62 | 4.7★ (1,612) | San Diego, 10 mi away | 24/7 | — |
| 9 | Water Wise Plumbing, Backflow & Drains | 62 | 4.9★ (415) | Vista, 7 mi away | 24/7 | — |
| 10 | Mr. Rogers Neighborhood Plumbing | 62 | 5.0★ (889) | Oceanside, 8 mi away | Sat · Sun · Evenings | — |
The 646 best plumbers in San Marcos, 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 Vista, 3 mi away
64/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 366 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 366 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2588 Progress St #14, Vista, CA 92081
Based in Vista, 3 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 507 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 507 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2780 La Mirada Dr suite a, Vista, CA 92081
Based in Escondido, 4 mi away
63/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 352 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 352 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1342 Industrial Ave, Escondido, CA 92029
Based in Poway, 15 mi away
63/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 1,470 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 1,470 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 14260 Garden Rd unit A601, Poway, CA 92064
Based in Carlsbad, 4 mi away
63/100CR ScoreRanked #6 because of its Google rating and review volume: 4.9★ from 4,132 Google reviews.
- 4.9★ from 4,132 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3282 Grey Hawk Ct, Carlsbad, CA 92010
Based in San Marcos
63/100CR ScoreRanked #7 because of its Google rating and review volume: 4.8★ from 2,810 Google reviews.
- 4.8★ from 2,810 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2930 Norman Strasse Rd STE 112, San Marcos, CA 92069
Based in San Diego, 10 mi away
62/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.7★ from 1,612 Google reviews, listed on Google as “Plumber”.
- 4.7★ from 1,612 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11440 W Bernardo Ct STE 300, San Diego, CA 92127
Based in Vista, 7 mi away
62/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 415 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 415 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1205 N Melrose Dr Suite E, Vista, CA 92083
Based in Oceanside, 8 mi away
62/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 889 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 889 Google reviews
- Hours
- Mon–Sun 7 AM–8 PM
- Address
- 4061 Oceanside Blvd Suite E, Oceanside, CA 92057
Based in San Marcos
62/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 132 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 132 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 965 E Mission Rd, San Marcos, CA 92069
Based in Vista, 6 mi away
62/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 181 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 181 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 235 Vista Village Dr Suite 1009, Vista, CA 92083
Based in San Diego, 18 mi away
62/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.7★ from 4,875 Google reviews, listed on Google as “Plumber”.
- 4.7★ from 4,875 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9895 Olson Dr Suite B, San Diego, CA 92121
Based in Escondido, 5 mi away
62/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.8★ from 263 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 263 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 500 La Terraza Blvd Suite 150 A, Escondido, CA 92025
Based in Vista, 4 mi away
62/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.4★ from 1,158 Google reviews, listed on Google as “Plumber”.
- 4.4★ from 1,158 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2141 Industrial Ct, Vista, CA 92081
Based in Carlsbad, 7 mi away
62/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 495 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 495 Google reviews
- Hours
- Mon–Sun 7 AM–8 PM
- Address
- 2227 Faraday Ave Suite Suite C, Carlsbad, CA 92008
Based in Canyon Lake, 3 mi away
62/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 106 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 106 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
#18 True Plumbing
Based in Escondido, 4 mi away
62/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.8★ from 195 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 195 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 748 S Vinewood St STE C, Escondido, CA 92029
Based in Carlsbad, 5 mi away
61/100CR ScoreRanked #19 because of its Google rating and review volume: 4.8★ from 2,898 Google reviews.
- 4.8★ from 2,898 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2748 Loker Ave W, Carlsbad, CA 92010
Based in Poway, 16 mi away
61/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 1,156 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 1,156 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 12150 Dearborn Pl, Poway, CA 92064
Based in Camp Pendleton North, 4 mi away
61/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 71 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 71 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in San Marcos
61/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.7★ from 83 Google reviews, listed on Google as “Plumber”.
- 4.7★ from 83 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 120 N Pacific St STE D3, San Marcos, CA 92069
Based in San Marcos
61/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 411 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 411 Google reviews
- Hours
- Mon–Sat 7 AM–8 PM · Sun closed
- Address
- 135 N Pacific St # C, San Marcos, CA 92069
Based in Camp Pendleton North, 2 mi away
61/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 417 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 417 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat 8 AM–12 PM · Sun closed
Based in Escondido, 2 mi away
61/100CR ScoreRanked #25 because of its Google rating and review volume: 4.8★ from 1,303 Google reviews.
- 4.8★ from 1,303 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2863 Executive Pl, Escondido, CA 92029
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 646 ranked plumbers here; the rest are on their profiles.
Also serving San Marcos
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.
How much do plumbers cost in San Marcos?
National price ranges in USD, not adjusted for San Marcos. 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 Marcos plumbers
We scored 646 San Marcos 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 Marcos 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 Marcos: frequently asked questions
Who is the best plumber in San Marcos?
By CR Score, the highest-ranked plumber in San Marcos, CA is Proactive Plumbing, Inc. with a CR Score of 64/100. It has 5.0★ from 493 Google reviews. It is open 24/7. Water Heaters Only, Inc (#2) and Pure Pro Plumbing (#3) follow. We ranked 646 plumbers on ten factors, last updated October 22, 2026.
How many plumbers are there in San Marcos?
ContractorsRanked ranks 646 plumbers serving San Marcos, CA. 7 of them are based in San Marcos; 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 Marcos are open 24/7?
314 ranked plumbers in San Marcos post 24/7 hours. The highest-ranked are Proactive Plumbing, Inc. (#1), Water Heaters Only, Inc (#2) and Pure Pro Plumbing (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which plumbers in San Marcos work on weekends?
482 of 646 ranked plumbers post Saturday hours and 373 post Sunday hours. The highest-ranked open Saturdays are Proactive Plumbing, Inc. (#1), Water Heaters Only, Inc (#2) and Pure Pro 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 San Marcos?
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 Marcos. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do San Marcos plumbers have?
The median Google rating among 646 rated plumbers in San Marcos is 5.0★, with a median of 21 reviews. ARS / Rescue Rooter has the most, 4,875 reviews, and ranks #13. 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 Marcos
- October 2026: CR Scores recalculated for 646 plumbers serving San Marcos.
- October 2026: 5 duplicate listings merged.
More plumbers and San Marcos pages
Plumbers near San Marcos
- Plumbers in Escondido, CA702 ranked
- Plumbers in Vista, CA471 ranked
- Plumbers in Valley Center, CA532 ranked
- Plumbers in Encinitas, CA622 ranked
- Plumbers in Carlsbad, CA419 ranked
- Plumbers in Solana Beach, CA745 ranked
- Plumbers in Oceanside, CA384 ranked
- Plumbers in Rancho Penasquitos, CA793 ranked
- Plumbers in Camp Pendleton South, CA412 ranked
- Plumbers in Poway, CA784 ranked
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- All contractors in San Marcos