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ContractorsRanked

Best Plumbers in San Marcos, TX (2026)

166 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in San Marcos: Blackburn Plumbing & Backflow, CR Score 90/100; 5.0★ from 158 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Mr. Rooter Plumbing of San Marcos, posts 24/7 hours; ranked #2 of 166.

  3. 49

    Most-reviewed: Legacy Home Services, 2,656 Google reviews at 5.0★, the most of 166 ranked; ranked #49.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

166 San Marcos plumbers are ranked here by CR Score, from 8 published factors. 54 are open 24/7, 95 open Saturdays and 71 open Sundays, based on posted hours. The median Google rating is 4.9★ across 166 rated businesses.

Top 10 plumbers in San Marcos at a glance

Top 10 plumbers in San Marcos at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Blackburn Plumbing & Backflow905.0★ (158)Canyon Lake, 7 mi away24/7Overall
2Mr. Rooter Plumbing of San Marcos904.8★ (81)San Marcos24/7Emergencies
3New Braunfels Plumbing & Drain904.9★ (222)New Braunfels, 10 mi away24/7—
4Roto-Rooter Plumbing & Water Cleanup of New Braunfels894.9★ (625)New Braunfels, 17 mi away24/7—
5Mr. Rooter Plumbing of New Braunfels894.9★ (445)New Braunfels, 18 mi away24/7—
6Jones Plumbing895.0★ (96)Canyon Lake, 10 mi away24/7—
7Reliant Plumbing - Austin894.7★ (1,449)Austin, 19 mi away24/7—
8Benjamin Franklin Plumbing of San Marcos885.0★ (50)Canyon Lake, 6 mi away24/7—
9Call My Plumber885.0★ (22)San Marcos24/7—
10Roto-Rooter Plumbing & Water Cleanup884.8★ (413)San Marcos24/7—

The 166 best plumbers in San Marcos, ranked

Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  11. #11 Zoom Drain

    Based in Buda, 15 mi away

    88/100CR Score

    Ranked #11 because of its Google rating and availability: 4.9★ from 209 Google reviews, open 24/7.

    • 4.9★ from 209 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1220 Satterwhite Rd Ste 1104, Buda, TX 78610
    View profile for Zoom Drain(737) 355-7042

  18. #18 Cowboy Plumbing Services

    Based in New Braunfels, 15 mi away

    87/100CR Score

    Ranked #18 because of its Google rating and trade focus: 4.9★ from 792 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 792 Google reviews
    Hours
    Mon–Fri 5:30 AM–8:30 PM · Sat–Sun 7 AM–7 PM
    Address
    1269 Summerwood Dr #401, New Braunfels, TX 78130
    View profile for Cowboy Plumbing Services(830) 214-4133

  20. #20 EF Plumbing

    Based in Canyon Lake, 20 mi away

    86/100CR Score

    Ranked #20 because of its Google rating and availability: 4.9★ from 138 Google reviews, open 24/7.

    • 4.9★ from 138 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    401 Vesper, Canyon Lake, TX 78133
    View profile for EF Plumbing(830) 431-7022

  22. #22 Kind Plumbing

    Based in Canyon Lake, 13 mi away

    85/100CR Score

    Ranked #22 because of its Google rating and availability: 4.8★ from 40 Google reviews, open 24/7.

    • 4.8★ from 40 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    111 Joe Wimberley Blvd #2125, Wimberley, TX 78676
    View profile for Kind Plumbing(512) 842-9020

  25. #25 5J Plumbing

    Based in Seguin, 22 mi away

    85/100CR Score

    Ranked #25 because of its Google rating and availability: 4.9★ from 127 Google reviews, open 24/7.

    • 4.9★ from 127 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    217 S River St Ste 107, Seguin, TX 78155
    View profile for 5J Plumbing(830) 556-1466

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 166 ranked plumbers here; the rest are on their profiles.

plumbers in San Marcos, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Raymond Bros Plumbing855.0★ (53)19 mi
27Buda Plumbing Advantage855.0★ (27)15 mi
281-Tom-Plumber855.0★ (96)25 mi
29Owens Plumbing Services LLC855.0★ (66)10 mi
30Brothers Plumbing Co.845.0★ (17)15 mi
31Beyond Wow Plumbing & Drains844.7★ (340)15 mi
32Vortex Plumbing Solutions845.0★ (9)11 mi
33Roto-Rooter Plumbing & Water Cleanup844.8★ (806)22 mi
34Mr. Rooter Plumbing of Seguin844.9★ (43)22 mi
35Stable Services845.0★ (22)18 mi
36Al Mac Plumbing & Gas, LLC845.0★ (169)21 mi
37Buda Plumbing Experts835.0★ (18)12 mi
38Kyle Plumbing & Drain835.0★ (15)11 mi
39New Braunfels Plumbing Experts835.0★ (20)13 mi
40Plumbing Matters834.7★ (65)17 mi
41Good Boy Plumbing835.0★ (110)19 mi
42Monkey Wrench Plumbing835.0★ (215)12 mi
43Flint Plumbing LLC834.9★ (71)15 mi
44MAS-GVR PLUMBING835.0★ (9)15 mi
45Marty's Plumbing and Drain835.0★ (20)21 mi
46Garrett’s Plumbing835.0★ (16)In San Marcos
47ADK Plumbing Services llc.824.9★ (26)23 mi
48CRUMLEY PLUMBING825.0★ (6)10 mi
49Legacy Home Services825.0★ (2,656)20 mi
50Qualified Maintenance & Construction, LLC.824.6★ (23)21 mi

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.

Unranked plumbers serving San Marcos
BusinessGoogle ratingDistance
A&D Plumbing5.0★ (1)17 mi
Albert's Backflow Solutions5.0★ (1)In San Marcos
Alberto Plumbing LLC5.0★ (1)10 mi
Beyer Plumbing CompanyIn San Marcos
Cowboy Creek5.0★ (3)14 mi
Davenport Plumbing, LLC5.0★ (2)20 mi
First Shot Plumbing and Drain5.0★ (17)24 mi
Four Rivers Plumbing, Heating & Air Conditioning5.0★ (1)17 mi
Harper Plumbing5.0★ (1)In San Marcos
Jessi's Plumbers4.8★ (22)14 mi
Kinsey Plumbing Heating and Air5.0★ (7)9 mi
MyPlumb-Sure5.0★ (19)23 mi
Paradigm Plumbing Partners5.0★ (5)11 mi
Patterson Plumbing & Septic5.0★ (1)10 mi
Rebellion PlumbingIn San Marcos
Seguin Plumbing Masters5.0★ (21)22 mi
The Original Home SolutionIn San Marcos
TX Plumbing Bureau5.0★ (2)9 mi
Usa Plumbing Lockhart LLC5.0★ (2)22 mi
Wards Water Quality5.0★ (2)In San Marcos

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.

How much do plumbers cost in San Marcos?
JobLowTypicalHighBasisChecked
Water heater replacement$882$1,348$1,826Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national rangeOctober 2026

How to check a plumber's license in Texas

In Texas, Texas State Board of Plumbing Examiners licenses Master, journeyman and tradesman plumber licenses; plumbing companies operate under a Responsible Master Plumber.

  1. Check that the status is active and the name matches the contract or truck.
  2. 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 166 San Marcos plumbers on 8 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. Unknown factors are left out of the score, 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn San Marcos data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)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, TX is Blackburn Plumbing & Backflow with a CR Score of 90/100. It has 5.0★ from 158 Google reviews. It is open 24/7. Mr. Rooter Plumbing of San Marcos (#2) and New Braunfels Plumbing & Drain (#3) follow. We ranked 166 plumbers on 8 factors, last updated October 22, 2026.

How many plumbers are there in San Marcos?

ContractorsRanked ranks 166 plumbers serving San Marcos, TX. 5 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?

54 ranked plumbers in San Marcos post 24/7 hours. The highest-ranked are Blackburn Plumbing & Backflow (#1), Mr. Rooter Plumbing of San Marcos (#2) and New Braunfels Plumbing & Drain (#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?

95 of 166 ranked plumbers post Saturday hours and 71 post Sunday hours. The highest-ranked open Saturdays are Blackburn Plumbing & Backflow (#1), Mr. Rooter Plumbing of San Marcos (#2) and New Braunfels Plumbing & Drain (#3). Posted hours are office hours; crews may book weekend jobs separately.

How do I check a plumber's license in Texas?

In Texas, Texas State Board of Plumbing Examiners handles licensing and covers Master, journeyman and tradesman plumber licenses; plumbing companies operate under a Responsible Master Plumber.

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 166 rated plumbers in San Marcos is 4.9★, with a median of 27 reviews. Legacy Home Services has the most, 2,656 reviews, and ranks #49. 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 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Update log for San Marcos

  1. October 2026: CR Scores recalculated for 166 plumbers serving San Marcos.
  2. October 2026: 2 duplicate listings merged.

More plumbers and San Marcos pages

Other trades in San Marcos