58/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.4★ from 75 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Pool Builders in Alton, IL (2026)
106 pool builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Alton: Backyard Dreams, CR Score 58/100; 4.4★ from 75 Google reviews; open Saturdays until 1 PM.
- 7
Best for emergencies (open 24/7): Show Me State Pressure & Softwashing, posts 24/7 hours; ranked #7 of 106.
- 9
Most-reviewed: Two Men and a Spa Dolly, 418 Google reviews at 4.4★, the most of 106 ranked; ranked #9.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
106 Alton pool builders are ranked here by CR Score, from ten published factors. 6 are open 24/7, 45 open Saturdays and 17 open Sundays, based on posted hours. The median Google rating is 4.5★ across 106 rated businesses.
Most of this list also appears on the Pool builders in Upper Alton ranking. See Pool builders in Upper Alton
Top 10 pool builders in Alton at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Backyard Dreams | 58 | 4.4★ (75) | Alton | Sat | Overall |
| 2 | R & S Pool & Spa | 58 | 4.6★ (385) | Maryland Heights, 18 mi away | — | — |
| 3 | Florida Pool & Spa | 57 | 4.7★ (264) | Maryland Heights, 18 mi away | — | — |
| 4 | Perigen Pools And Supplies | 57 | 4.4★ (92) | Granite City, 14 mi away | — | — |
| 5 | Prestige Pools & Spas | 57 | 4.5★ (227) | St. Louis, 26 mi away | Sat | — |
| 6 | Reflections Pool Services | 56 | 4.7★ (49) | Saint Peters, 25 mi away | Sat · Sun · Evenings | — |
| 7 | Show Me State Pressure & Softwashing | 55 | 5.0★ (125) | Wentzville, 24 mi away | 24/7 | Emergencies |
| 8 | Dugger Swimming Pools & Supplies, Inc. | 55 | 4.0★ (53) | Bethalto, 8 mi away | Sat | — |
| 9 | Two Men and a Spa Dolly | 55 | 4.4★ (418) | Arnold, 34 mi away | — | Most reviews |
| 10 | Accurate Pool and Landscape, LLC. | 55 | 5.0★ (16) | Granite City, 10 mi away | Sat | — |
The 106 best pool builders in Alton, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Maryland Heights, 18 mi away
58/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.6★ from 385 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Maryland Heights, 18 mi away
57/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.7★ from 264 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Granite City, 14 mi away
57/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.4★ from 92 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in St. Louis, 26 mi away
57/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.5★ from 227 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Peters, 25 mi away
56/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.7★ from 49 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wentzville, 24 mi away
55/100CR ScoreRanked #7 because of its Google rating and review volume: 5.0★ from 125 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bethalto, 8 mi away
55/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.0★ from 53 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Arnold, 34 mi away
55/100CR ScoreRanked #9 because of its Google rating and review volume: 4.4★ from 418 Google reviews, the most in Alton.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Granite City, 10 mi away
55/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Edwardsville, 9 mi away
54/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#12 Pro Pool Inc
Based in Bridgeton, 16 mi away
54/100CR ScoreRanked #12 because of its Google rating and trade focus: 3.6★ from 36 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in O'Fallon, 24 mi away
54/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.8★ from 34 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in O'Fallon, 23 mi away
54/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Peters, 25 mi away
54/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.5★ from 108 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kirkwood, 24 mi away
53/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Louis, 24 mi away
53/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.0★ from 102 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chesterfield, 25 mi away
53/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.7★ from 14 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Peters, 22 mi away
53/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.1★ from 60 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Charles, 20 mi away
53/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.2★ from 126 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Louis, 18 mi away
53/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Alton, 10 mi away
53/100CR ScoreRanked #22 because of its Google rating and review volume: 5.0★ from 39 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
#23 Max-Q Services
Based in Florissant, 12 mi away
52/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#24 Paradise Pools
Based in Murphy, 22 mi away
52/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.2★ from 31 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in O'Fallon, 26 mi away
52/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.0★ from 73 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
How we ranked Alton pool builders
We scored 106 Alton pool builders 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 November 3, 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 |
Pool builders in Alton: frequently asked questions
Who is the best pool builder in Alton?
By CR Score, the highest-ranked pool builder in Alton, IL is Backyard Dreams with a CR Score of 58/100. It has 4.4★ from 75 Google reviews. It is open Saturdays until 1 PM. R & S Pool & Spa (#2) and Florida Pool & Spa (#3) follow. We ranked 106 pool builders on ten factors, last updated November 3, 2026.
How many pool builders are there in Alton?
ContractorsRanked ranks 106 pool builders serving Alton, IL. 1 of them is based in Alton; the rest serve it from nearby towns. Counts are as of November 2026.
Which pool builders in Alton are open 24/7?
6 ranked pool builders in Alton post 24/7 hours. The highest-ranked are Show Me State Pressure & Softwashing (#7), McClure-Davison Pools (#14) and Liquid Assets Pools (#16). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pool builders in Alton work on weekends?
45 of 106 ranked pool builders post Saturday hours and 17 post Sunday hours. The highest-ranked open Saturdays are Backyard Dreams (#1), Prestige Pools & Spas (#5) and Reflections Pool Services (#6). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Alton pool builders have?
The median Google rating among 106 rated pool builders in Alton is 4.5★, with a median of 18 reviews. Two Men and a Spa Dolly has the most, 418 reviews, and ranks #9. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank pool builders?
Each pool builder 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.
Do pool builders outside Alton count in this ranking?
Yes, if they are within 40 mi of the Alton city center, our service radius for pool builders. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Can pool builders pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Alton
- November 2026: CR Scores recalculated for 106 pool builders serving Alton.
More pool builders and Alton pages
Pool builders near Alton
- Pool builders in Upper Alton, IL103 ranked
- Pool builders in Godfrey, IL105 ranked
- Pool builders in Wood River, IL104 ranked
- Pool builders in Granite City, IL113 ranked
- Pool builders in Edwardsville, IL98 ranked
- Pool builders in Glen Carbon, IL101 ranked
- Pool builders in East Saint Louis, IL113 ranked
- Pool builders in Collinsville, IL105 ranked
- Pool builders in Troy, IL91 ranked
- Pool builders in Cahokia, IL113 ranked
Other trades in Alton
- Roofers in Alton678 ranked
- Plumbers in Alton260 ranked
- Electricians in Alton163 ranked
- HVAC contractors in Alton318 ranked
- General contractors in Alton387 ranked
- Painters in Alton47 ranked
- Landscapers in Alton75 ranked
- Handymen in Alton29 ranked
- Kitchen remodelers in Alton209 ranked
- Bathroom remodelers in Alton216 ranked
- Flooring contractors in Alton153 ranked
- Tile installers in Alton10 ranked
- Drywall contractors in Alton5 ranked
- Concrete contractors in Alton146 ranked
- Fence contractors in Alton89 ranked
- Deck builders in Alton108 ranked
- Siding contractors in Alton289 ranked
- Window installers in Alton195 ranked
- Gutter installers in Alton146 ranked
- Insulation contractors in Alton38 ranked
- Solar installers in Alton60 ranked
- Garage door repair companies in Alton75 ranked
- Foundation repair companies in Alton74 ranked
- Tree services in Alton189 ranked
- Masonry contractors in Alton108 ranked
- Water damage restoration companies in Alton251 ranked
- Home builders in Alton232 ranked
- Demolition contractors in Alton36 ranked
- Window cleaners in Alton9 ranked
- Pressure washing companies in Alton18 ranked
- Pest control companies in Alton74 ranked
- Paving contractors in Alton83 ranked
- Auto glass repair shops in Alton91 ranked
- Septic service companies in Alton49 ranked
- Excavating contractors in Alton60 ranked
- All contractors in Alton