38 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Union: Signature Plumbing & Drain Cleaning LLC, CR Score 63/100; 4.8★ from 104 Google reviews; open 24/7.
Best for emergencies (open 24/7): Level 9 Heating Cooling Plumbing, posts 24/7 hours; ranked #2 of 38.
Most-reviewed: Superior Service, 2,219 Google reviews at 5.0★, the most of 38 ranked; ranked #17.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
38 Union plumbers are ranked here by CR Score, from ten published factors. 10 are open 24/7, 18 open Saturdays and 12 open Sundays, based on posted hours. The median Google rating is 4.8★ across 38 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Signature Plumbing & Drain Cleaning LLC | 63 | 4.8★ (104) | Union | 24/7 | Overall |
| 2 | Level 9 Heating Cooling Plumbing | 62 | 4.9★ (1,254) | Washington, 6 mi away | 24/7 | Emergencies |
| 3 | Roto-Rooter Plumbing & Water Cleanup | 61 | 4.9★ (1,474) | Ballwin, 24 mi away | 24/7 | — |
| 4 | Roto-Rooter Plumbing & Water Cleanup | 61 | 5.0★ (423) | Eureka, 21 mi away | 24/7 | — |
| 5 | Advanced Plumbing Systems LLC | 61 | 5.0★ (780) | Washington, 6 mi away | — | — |
| 6 | Shamrock Sewer & Drain | 60 | 4.8★ (304) | Pacific, 16 mi away | 24/7 | — |
| 7 | Brueggemann Plumbing | 59 | 4.3★ (16) | Union | 24/7 | — |
| 8 | Dr. Drain Good Plumbing | 57 | 5.0★ (17) | Sullivan, 13 mi away | 24/7 | — |
| 9 | Posey Family Plumbing | 57 | 5.0★ (92) | Washington, 7 mi away | Evenings | — |
| 10 | Clubbs Home Remodeling & Plumbing | 57 | 4.7★ (939) | O'Fallon, 14 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: 4.8★ from 104 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Washington, 6 mi away
Ranked #2 because of its Google rating and review volume: 4.9★ from 1,254 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ballwin, 24 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 1,474 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Eureka, 21 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 423 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Washington, 6 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 780 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Pacific, 16 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 304 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Union
Ranked #7 because of its Google rating and trade focus: 4.3★ from 16 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sullivan, 13 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Washington, 7 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 92 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in O'Fallon, 14 mi away
Ranked #10 because of its Google rating and trade focus: 4.7★ from 939 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Union
Ranked #11 because of its Google rating and trade focus: 4.9★ from 51 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Washington, 7 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 88 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Washington, 7 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Pacific, 14 mi away
Ranked #14 because of its Google rating and trade focus: 4.4★ from 233 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Washington, 6 mi away
Ranked #15 because of its Google rating and trade focus: 4.4★ from 17 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Union
Ranked #16 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dardenne Prairie, 25 mi away
Ranked #17 because of its Google rating and review volume: 5.0★ from 2,219 Google reviews, the most in Union.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chesterfield, 25 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 594 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Washington, 8 mi away
Ranked #19 because of its Google rating and trade focus: 4.6★ from 64 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Saint Louis, 24 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lake Saint Louis, 24 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Pacific, 19 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Eureka, 21 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 79 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Union
Ranked #24 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Union
Ranked #25 because of its Google rating and trade focus: 2.8★ from 10 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #38, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Armstrong Plumbing | 52 | 4.8★ (95) | 24 mi |
| 27 | Arrow Mechanical Heating & Cooling | 51 | 4.8★ (91) | In Union |
| 28 | Bob's Plumbing Co | 51 | 5.0★ (9) | 19 mi |
| 29 | MBC Plumbing | 51 | 4.2★ (12) | 20 mi |
| 30 | Boles No 1 Plumbing Heating AC | 50 | 3.2★ (20) | 6 mi |
| 31 | E&M Plumbing Co, Inc | 50 | 4.6★ (36) | 21 mi |
| 32 | Crosscut Lawn & Landscape | 49 | 4.7★ (116) | 6 mi |
| 33 | FRUEH | 49 | 4.8★ (16) | In Union |
| 34 | Quacker's Waterproofing & Basement Repair | 48 | 4.8★ (59) | 18 mi |
| 35 | T & J Plumbing Solutions | 48 | 5.0★ (6) | 23 mi |
| 36 | Lance's Landscaping, LLC | 47 | 5.0★ (30) | 25 mi |
| 37 | KT Property Maintenance LLC. | 47 | 5.0★ (17) | 23 mi |
| 38 | JK Landscape & Design | 40 | 2.0★ (8) | 24 mi |
8 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 |
|---|---|---|
| Bob's Plumbing Co | 2 mi | |
| Bradshaw Plumbing | 7 mi | |
| Cochran Engineering | In Union | |
| FDF Plumbing | 5.0★ (2) | 20 mi |
| Greenscape Outdoors | 25 mi | |
| O'Fallon Sewer & Plumbing Repair Service | 24 mi | |
| Pondrom Plumbing | 5.0★ (2) | 17 mi |
| Suermann Plumbing & Construction | 23 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 |
We scored 38 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 |