44 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Union: Mark and Son's Plumbing, CR Score 63/100; 4.7★ from 50 Google reviews; open 24/7.
Best for emergencies (open 24/7): Roto-Rooter Plumbing & Water Cleanup, posts 24/7 hours; ranked #2 of 44.
Most-reviewed: Roto-Rooter Plumbing & Water Cleanup, 484 Google reviews at 4.7★, the most of 44 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
44 Union plumbers are ranked here by CR Score, from ten published factors. 12 are open 24/7, 17 open Saturdays and 12 open Sundays, based on posted hours. The median Google rating is 4.7★ across 44 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mark and Son's Plumbing | 63 | 4.7★ (50) | Union | 24/7 | Overall |
| 2 | Roto-Rooter Plumbing & Water Cleanup | 61 | 4.7★ (484) | Spartanburg, 22 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Ivey Septic Service | 60 | 5.0★ (12) | Union | 24/7 | — |
| 4 | Mr. Rooter Plumbing of Spartanburg | 59 | 4.9★ (99) | Spartanburg, 21 mi away | 24/7 | — |
| 5 | Waldrop Plumbing Heating Air | 57 | 4.9★ (247) | Clinton, 22 mi away | 24/7 | — |
| 6 | Citi Plumbing LLC | 57 | 5.0★ (28) | Spartanburg, 20 mi away | 24/7 | — |
| 7 | One Call Plumbing | 57 | 5.0★ (285) | Greer, 24 mi away | — | — |
| 8 | Southern Fried Plumbing | 56 | 5.0★ (40) | Greer, 23 mi away | 24/7 | — |
| 9 | Premier Water Damage Plumbing | 56 | 4.6★ (90) | Rock Hill, 16 mi away | 24/7 | — |
| 10 | Gilbert Plumbing Services, LLC | 55 | 4.9★ (175) | Five Forks, 24 mi away | — | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.7★ from 50 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 22 mi away
Ranked #2 because of its Google rating and review volume: 4.7★ from 484 Google reviews, the most in Union.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Union
Ranked #3 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 21 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 99 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clinton, 22 mi away
Ranked #5 because of its Google rating and review volume: 4.9★ from 247 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 20 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Greer, 24 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 285 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Greer, 23 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rock Hill, 16 mi away
Ranked #9 because of its Google rating and review volume: 4.6★ from 90 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Five Forks, 24 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 175 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 21 mi away
Ranked #11 because of its Google rating and trade focus: 3.9★ from 11 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 24 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 24 mi away
Ranked #13 because of its Google rating and review volume: 5.0★ from 313 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gaffney, 22 mi away
Ranked #14 because of its Google rating and trade focus: 4.4★ from 50 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Spartanburg, 23 mi away
Ranked #15 because of its Google rating and trade focus: 4.5★ from 40 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Gaffney, 23 mi away
Ranked #16 because of its Google rating and trade focus: 4.6★ from 27 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gaffney, 25 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chester, 24 mi away
Ranked #18 because of its Google rating and trade focus: 3.8★ from 16 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clinton, 23 mi away
Ranked #19 because of its Google rating and trade focus: 3.8★ from 10 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chester, 24 mi away
Ranked #20 because of its Google rating and trade focus: 3.9★ from 11 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Spartanburg, 21 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Union
Ranked #22 because of its Google rating and trade focus: 4.5★ from 6 Google reviews, listed on Google as “Mechanical contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gaffney, 25 mi away
Ranked #23 because of its Google rating and trade focus: 4.5★ from 23 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Boiling Springs, 16 mi away
Ranked #24 because of its Google rating and review volume: 4.8★ from 42 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clinton, 24 mi away
Ranked #25 because of its Google rating and trade focus: 3.6★ from 9 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#1 to #25 are shown in full above. Here are #26 to #44, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | United Appliance | 49 | 3.4★ (5) | 22 mi |
| 27 | ICR Plumbing Systems, Inc. | 49 | 4.4★ (15) | 23 mi |
| 28 | 29:11 Construction | 49 | 5.0★ (9) | In Union |
| 29 | Spartanburg Sanitary Sewer | 49 | 5.0★ (3) | 24 mi |
| 30 | C & C Plumbing Services & Contractors | 48 | 4.0★ (4) | 24 mi |
| 31 | Williams Plumbing & Associates Inc. | 48 | 4.6★ (9) | 24 mi |
| 32 | Blanton's Septic Tank Services | 48 | 2.5★ (4) | 23 mi |
| 33 | Wendell Lee Well Services | 47 | 4.5★ (45) | 19 mi |
| 34 | Plumbing Drain Works | 47 | 4.2★ (5) | 23 mi |
| 35 | Total Plumbing Co | 47 | 3.9★ (7) | 25 mi |
| 36 | The Highlands Group of the Carolinas LLC | 47 | 4.8★ (4) | 21 mi |
| 37 | Total Plumbing | 46 | 2.0★ (11) | 22 mi |
| 38 | Carolyn Basement Technologies LLC | 46 | 4.8★ (25) | 25 mi |
| 39 | Southeastern Plumbing | 46 | 5.0★ (8) | 20 mi |
| 40 | Martin & Son Contracting, Inc. | 45 | 4.6★ (30) | 20 mi |
| 41 | Upstate Utility Locating | 44 | 5.0★ (3) | 22 mi |
| 42 | Cornerstone Home Services | 43 | 5.0★ (10) | 21 mi |
| 43 | Uneven Floor Solutions LLC | 42 | 5.0★ (7) | 24 mi |
| 44 | Finley Insulators | 41 | 3.8★ (4) | 23 mi |
17 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 |
|---|---|---|
| Ace Spartanburg SC Plumber | 25 mi | |
| Boulware Plumbing & Construction | 4.5★ (2) | In Union |
| Brian's Excavating and Land Clearing Services | 5.0★ (1) | 21 mi |
| Carolina Drain Solutions | 19 mi | |
| Gambrell's Plumbing Services | 1.0★ (1) | 25 mi |
| greenville-plumbing | 25 mi | |
| Johnson Excavating, Inc. | 5.0★ (2) | 21 mi |
| Jon The Plumber LLC | 5.0★ (1) | In Union |
| K & S Handyman Services and More! | 16 mi | |
| Palmetto Heating & Air | 22 mi | |
| Pearson Plumbing Services | 25 mi | |
| PlumberX | 5.0★ (1) | 16 mi |
| Rex Plumbing LLC - Reliable Affordable Quality Plumbing Repair Service Contractor | 23 mi | |
| Sewer Hawg | 5.0★ (2) | 21 mi |
| Southeastern Plumbing Services | 2.0★ (1) | 24 mi |
| Stovall Plumbing LLC | 16 mi | |
| Tesco Inc of South Carolina | 5.0★ (1) | 21 mi |
National price ranges in USD, not adjusted for Union. 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 South Carolina, South Carolina Contractor’s Licensing Board (LLR) licenses Mechanical contractor licenses for commercial work; residential specialty contractors register with the Residential Builders Commission.
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 44 Union 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 Union 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 |