61/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 272 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 Derby, CT (2026)
423 pool builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Derby: Blue Water Pools of Connecticut, CR Score 61/100; 4.9★ from 272 Google reviews; open Saturdays until 5 PM.
- 4
Best for emergencies (open 24/7): Long Island Pool Covers, posts 24/7 hours; ranked #4 of 423.
- 7
Most-reviewed: Pool Doctor, 604 Google reviews at 4.8★, the most of 423 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
423 Derby pool builders are ranked here by CR Score, from ten published factors. 34 are open 24/7, 260 open Saturdays and 96 open Sundays, based on posted hours. The median Google rating is 4.6★ across 423 rated businesses.
Top 10 pool builders in Derby at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Blue Water Pools of Connecticut | 61 | 4.9★ (272) | Danbury, 9 mi away | Sat | Overall |
| 2 | Scuba Snak - Swimming Pool Leak Detection | 61 | 5.0★ (531) | Centereach, 36 mi away | Sat · Sun · Evenings | — |
| 3 | Bob the Diver | 61 | 5.0★ (364) | Ronkonkoma, 34 mi away | Sat · Sun · Evenings | — |
| 4 | Long Island Pool Covers | 60 | 5.0★ (109) | Selden, 32 mi away | 24/7 | Emergencies |
| 5 | Pool Doctor | 59 | 4.9★ (131) | Wolcott, 17 mi away | — | — |
| 6 | EZ Aqua Blue Sea Pools | 59 | 5.0★ (88) | Naugatuck, 12 mi away | Sat | — |
| 7 | Pool Doctor | 59 | 4.8★ (604) | East Northport, 33 mi away | Sat | Most reviews |
| 8 | Advantage L.I. | 59 | 4.9★ (218) | Holbrook, 35 mi away | Sat · Sun | — |
| 9 | Florida Concepts Pools & spa’s Inc. | 58 | 4.9★ (79) | Mahopac, 34 mi away | 24/7 | — |
| 10 | Aloha Swimming Pools & Spas | 58 | 4.9★ (45) | Cheshire, 14 mi away | Sat · Sun · Evenings | — |
The 423 best pool builders in Derby, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Centereach, 36 mi away
61/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 531 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ronkonkoma, 34 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 364 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Selden, 32 mi away
60/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 109 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#5 Pool Doctor
Based in Wolcott, 17 mi away
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 131 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Naugatuck, 12 mi away
59/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 88 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#7 Pool Doctor
Based in East Northport, 33 mi away
59/100CR ScoreRanked #7 because of its Google rating and review volume: 4.8★ from 604 Google reviews, the most in Derby.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Holbrook, 35 mi away
59/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 218 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mahopac, 34 mi away
58/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 79 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cheshire, 14 mi away
58/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 45 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Coram, 31 mi away
58/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 176 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wallingford Center, 16 mi away
58/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.6★ from 183 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Middlebury, 13 mi away
58/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.6★ from 19 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hamden, 8 mi away
57/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.5★ from 30 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wallingford, 18 mi away
57/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.6★ from 143 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lake Ronkonkoma, 35 mi away
57/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.6★ from 226 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#17 Coversafe, Inc.
Based in Plymouth, 24 mi away
57/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 271 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Meriden, 22 mi away
57/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.0★ from 112 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cheshire, 18 mi away
57/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 34 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#20 CT Pool Liner
Based in Waterbury, 16 mi away
57/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 30 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Orange, 6 mi away
57/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.0★ from 59 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#22 Coversafe, Inc.
Based in Bayport, 33 mi away
57/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 370 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#23 Tano Pools
Based in Hamden, 10 mi away
57/100CR 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.
Based in Danbury, 19 mi away
57/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 32 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Orange, 6 mi away
57/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.5★ from 54 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Pool builders 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 423 ranked pool builders here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Padilla pools | 57 | 4.8★ (67) | 29 mi |
| 27 | Platinum pools | 57 | 5.0★ (44) | 19 mi |
| 28 | Crystal View Pools | 57 | 5.0★ (16) | 21 mi |
| 29 | Orange County Pools & Spas | 57 | 4.7★ (238) | 40 mi |
| 30 | K's pools | 57 | 4.7★ (38) | 12 mi |
| 31 | Jay’s Scuba Services & Pool Repair | 56 | 5.0★ (16) | 22 mi |
| 32 | New Canaan Pool Service | 56 | 4.7★ (20) | 22 mi |
| 33 | Provision Pools | 56 | 4.9★ (55) | 30 mi |
| 34 | Scarritt Spas & Pools | 56 | 4.6★ (178) | 26 mi |
| 35 | Barrett Pool Water & Liners | 56 | 4.2★ (22) | 18 mi |
| 36 | Pool Water Pat | 56 | 4.2★ (102) | 21 mi |
| 37 | A-1 Pools & Spas | 56 | 4.2★ (65) | 6 mi |
| 38 | Dingman Pools and Spas inc | 56 | 4.9★ (213) | 37 mi |
| 39 | Agape Pools Inc- Builder and Renovations | 56 | 5.0★ (89) | 29 mi |
| 40 | Pools Plus Ct | 56 | 3.9★ (31) | 7 mi |
| 41 | The Poolsmith Inc. | 56 | 4.6★ (115) | 34 mi |
| 42 | Imperial Pools By Nova | 56 | 4.5★ (31) | 14 mi |
| 43 | Glengate | 56 | 4.8★ (121) | 20 mi |
| 44 | Pool Leak Finders | 56 | 4.9★ (55) | 34 mi |
| 45 | Nejame & Sons | 56 | 4.3★ (146) | 19 mi |
| 46 | GranSasso Inc. Swimming Pool Services | 56 | 5.0★ (106) | 34 mi |
| 47 | OUTSIDE | 56 | 4.9★ (126) | 37 mi |
| 48 | Sweeney's Pool Service, Inc. | 56 | 4.5★ (383) | 38 mi |
| 49 | Fiore Custom Pools & Spa LLC | 55 | 3.9★ (34) | 12 mi |
| 50 | Leslie's Pool Supplies | 55 | 4.4★ (54) | 12 mi |
Also serving Derby
20 more pool builders within 40 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 |
|---|---|---|
| AAA Liner & Cover Experts Corporation. | 5.0★ (2) | 8 mi |
| ANM Pools & Fence LLC | 4.5★ (2) | 22 mi |
| Aquachecks | 5.0★ (2) | 14 mi |
| BANDERA POOL | 5.0★ (2) | 33 mi |
| Bella Pools & Fence LLC | 4.5★ (2) | 26 mi |
| Blue Haven Pools & Spas | 5.0★ (2) | 28 mi |
| Blue Water Pools | 5.0★ (2) | 21 mi |
| DJM Excavation and Pools, LLC | 5.0★ (2) | 17 mi |
| Fairfield County Pool & Patio | In Derby | |
| JM Pool Professionals LLC | 5.0★ (2) | 30 mi |
| Middconn Associates LLC | 2.5★ (2) | 16 mi |
| Northway Pool Servce | 3.5★ (2) | 31 mi |
| OUTSIDE (Previously Tamm's Pools, Inc.) | 5.0★ (2) | 32 mi |
| Pool Service By Ford Inc | 5.0★ (2) | 19 mi |
| Pools By Design Inc | 5.0★ (2) | 16 mi |
| Pristine Pools of Greenwich | 3.0★ (2) | 28 mi |
| Shoreline Pools, Inc. | 5.0★ (2) | 31 mi |
| Swimming Pool Cleaning Derby | In Derby | |
| Vittorini Masonry & Construction Services LLC | 5.0★ (2) | 32 mi |
| Z pool boy | 5.0★ (2) | 28 mi |
How we ranked Derby pool builders
We scored 423 Derby 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 2, 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 Derby 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 Derby: frequently asked questions
Who is the best pool builder in Derby?
By CR Score, the highest-ranked pool builder in Derby, CT is Blue Water Pools of Connecticut with a CR Score of 61/100. It has 4.9★ from 272 Google reviews. It is open Saturdays until 5 PM. Scuba Snak - Swimming Pool Leak Detection (#2) and Bob the Diver (#3) follow. We ranked 423 pool builders on ten factors, last updated November 2, 2026.
How many pool builders are there in Derby?
ContractorsRanked ranks 423 pool builders serving Derby, CT. Another 20 within 40 mi are listed but not ranked yet. Counts are as of November 2026.
Which pool builders in Derby are open 24/7?
34 ranked pool builders in Derby post 24/7 hours. The highest-ranked are Long Island Pool Covers (#4), Florida Concepts Pools & spa’s Inc. (#9) and Connecticut Pool and Spa (#13). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pool builders in Derby work on weekends?
260 of 423 ranked pool builders post Saturday hours and 96 post Sunday hours. The highest-ranked open Saturdays are Blue Water Pools of Connecticut (#1), Scuba Snak - Swimming Pool Leak Detection (#2) and Bob the Diver (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Derby pool builders have?
The median Google rating among 423 rated pool builders in Derby is 4.6★, with a median of 20 reviews. Pool Doctor has the most, 604 reviews, and ranks #7. 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 Derby count in this ranking?
Yes, if they are within 40 mi of the Derby 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 Derby
- November 2026: CR Scores recalculated for 423 pool builders serving Derby.
- November 2026: 1 duplicate listing merged.
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