255 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Alton: Roto-Rooter Plumbing & Water Cleanup, CR Score 63/100; 4.8★ from 4,983 Google reviews; open 24/7.
Best for emergencies (open 24/7): Roto-Rooter Plumbing & Water Cleanup, posts 24/7 hours; ranked #2 of 255.
Most-reviewed: Morrison Plumbing, Heating, Air, & Electrical Services, 8,631 Google reviews at 4.9★, the most of 255 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
255 Alton plumbers are ranked here by CR Score, from ten published factors. 66 are open 24/7, 130 open Saturdays and 96 open Sundays, based on posted hours. The median Google rating is 4.7★ across 255 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Roto-Rooter Plumbing & Water Cleanup | 63 | 4.8★ (4,983) | Hazelwood, 14 mi away | 24/7 | Overall |
| 2 | Roto-Rooter Plumbing & Water Cleanup | 62 | 4.8★ (5,589) | St. Louis, 18 mi away | 24/7 | Emergencies |
| 3 | Roto-Rooter Plumbing & Water Cleanup | 61 | 4.9★ (1,738) | Saint Charles, 18 mi away | 24/7 | — |
| 4 | Embrich Plumbing Co. | 61 | 4.9★ (1,201) | Maryville, 17 mi away | 24/7 | — |
| 5 | Roto-Rooter Plumbing & Water Cleanup | 60 | 4.9★ (2,557) | Chesterfield, 23 mi away | 24/7 | — |
| 6 | Cardinal Plumbing Co. | 60 | 4.9★ (462) | Alton | 24/7 | — |
| 7 | Able Rooter Plumbing & Drain Cleaning St. Louis | 60 | 5.0★ (1,008) | East Saint Louis, 22 mi away | 24/7 | — |
| 8 | Morrison Plumbing, Heating, Air, & Electrical Services | 60 | 4.9★ (8,631) | Collinsville, 17 mi away | 24/7 | Most reviews |
| 9 | Academy Air Heating, Cooling, Plumbing and Electric | 60 | 4.8★ (6,727) | Hazelwood, 14 mi away | 24/7 | — |
| 10 | Nolen Septic Services | 60 | 5.0★ (237) | Edwardsville, 15 mi away | 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: 4.8★ from 4,983 Google reviews, listed on Google as “Plumber”.
Based in St. Louis, 18 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 5,589 Google reviews, listed on Google as “Plumber”.
Based in Saint Charles, 18 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 1,738 Google reviews, listed on Google as “Plumber”.
Based in Maryville, 17 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 1,201 Google reviews, listed on Google as “Plumber”.
Based in Chesterfield, 23 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 2,557 Google reviews, listed on Google as “Plumber”.
Based in Alton
Ranked #6 because of its Google rating and trade focus: 4.9★ from 462 Google reviews, listed on Google as “Roofing contractor”.
Based in East Saint Louis, 22 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 1,008 Google reviews, listed on Google as “Plumber”.
Based in Collinsville, 17 mi away
Ranked #8 because of its Google rating and review volume: 4.9★ from 8,631 Google reviews, the most in Alton.
Based in Hazelwood, 14 mi away
Ranked #9 because of its Google rating and review volume: 4.8★ from 6,727 Google reviews.
Based in Edwardsville, 15 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 237 Google reviews, listed on Google as “Septic system service”.
Based in East Alton, 5 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Plumber”.
Based in Saint Peters, 17 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 275 Google reviews, listed on Google as “Plumber”.
Based in Bethalto, 9 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 62 Google reviews, listed on Google as “Plumber”.
Based in East Alton, 7 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 215 Google reviews, listed on Google as “Plumber”.
Based in St. Louis, 13 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “Plumber”.
Based in Alton
Ranked #16 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Plumber”.
Based in Collinsville, 18 mi away
Ranked #17 because of its Google rating and review volume: 4.7★ from 5,072 Google reviews.
Based in East Alton, 7 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 562 Google reviews, listed on Google as “Plumber”.
Based in Saint Charles, 19 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 169 Google reviews, listed on Google as “Plumber”.
Based in Edwardsville, 14 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 43 Google reviews, listed on Google as “Plumber”.
Based in East Saint Louis, 22 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 109 Google reviews, listed on Google as “Plumber”.
Based in Staunton, 16 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 50 Google reviews, listed on Google as “Plumber”.
Based in Godfrey, 10 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Plumber”.
Based in Collinsville, 18 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 514 Google reviews, listed on Google as “HVAC contractor”.
Based in Saint Peters, 24 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 157 Google reviews, listed on Google as “Plumber”.
#1 to #25 are shown in full above. Here are #26 to #29, in CR Score order; each links to its profile. We publish the top 29 of 255 ranked plumbers here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Classic Aire Care | 56 | 4.9★ (4,820) | 18 mi |
| 27 | Pruitt Mechanical Services | 56 | 4.9★ (672) | 8 mi |
| 29 | Ray's Plumbing Repair | 56 | 3.9★ (13) | 8 mi |
National price ranges in USD, not adjusted for Alton. 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 Illinois, Illinois Department of Public Health, Plumbing Program licenses Plumber licenses and plumbing contractor registration (Chicago licenses its own plumbers).
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 255 Alton 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 Alton 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 |