61/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 161 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Allen, TX (2026)
66 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Allen: Royal Flush Septic, Inc., CR Score 61/100; 4.8★ from 161 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Underwood Plumbing and Septic, posts 24/7 hours; ranked #2 of 66.
- 6
Most-reviewed: Baker Brothers Plumbing, Air & Electric, 24,389 Google reviews at 4.9★, the most of 66 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
66 Allen septic service companies are ranked here by CR Score, from ten published factors. 30 are open 24/7, 44 open Saturdays and 31 open Sundays, based on posted hours. The median Google rating is 4.9★ across 66 rated businesses.
Top 10 septic service companies in Allen at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Royal Flush Septic, Inc. | 61 | 4.8★ (161) | Allen | 24/7 | Overall |
| 2 | Underwood Plumbing and Septic | 61 | 4.9★ (176) | McKinney, 6 mi away | 24/7 | Emergencies |
| 3 | Heartland Grease & Septic | 58 | 5.0★ (77) | Dallas, 12 mi away | 24/7 | — |
| 4 | Nortex Septic Systems | 58 | 5.0★ (7) | Allen | 24/7 | — |
| 5 | Bacon Plumbing Heating Air Electric | 57 | 4.9★ (1,821) | Plano, 6 mi away | 24/7 | — |
| 6 | Baker Brothers Plumbing, Air & Electric | 57 | 4.9★ (24,389) | Mesquite, 21 mi away | 24/7 | Most reviews |
| 7 | Cantex Septic Pumping | 56 | 5.0★ (49) | Edmonton, 18 mi away | 24/7 | — |
| 8 | HomeField Collin County | 56 | 5.0★ (79) | McKinney, 9 mi away | Sat · Evenings | — |
| 9 | TCS Grease Trap Cleaners | 56 | 5.0★ (63) | Irving, 21 mi away | 24/7 | — |
| 10 | Bacon Plumbing Heating Air Electric | 56 | 4.9★ (7,092) | Rockwall, 19 mi away | 24/7 | — |
The 66 best septic service companies in Allen, ranked
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.
Based in McKinney, 6 mi away
61/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 176 Google reviews, listed on Google as “Septic system service”.
Based in Dallas, 12 mi away
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 77 Google reviews, listed on Google as “Septic system service”.
Based in Allen
58/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Septic system service”.
Based in Plano, 6 mi away
57/100CR ScoreRanked #5 because of its Google rating and review volume: 4.9★ from 1,821 Google reviews.
Based in Mesquite, 21 mi away
57/100CR ScoreRanked #6 because of its Google rating and review volume: 4.9★ from 24,389 Google reviews, the most in Allen.
Based in Edmonton, 18 mi away
56/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 49 Google reviews, listed on Google as “Septic system service”.
Based in McKinney, 9 mi away
56/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 79 Google reviews, listed on Google as “Septic system service”.
Based in Irving, 21 mi away
56/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 63 Google reviews, listed on Google as “Septic system service”.
Based in Rockwall, 19 mi away
56/100CR ScoreRanked #10 because of its Google rating and review volume: 4.9★ from 7,092 Google reviews.
Based in Princeton, 12 mi away
56/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.4★ from 29 Google reviews, listed on Google as “Septic system service”.
Based in Forney, 24 mi away
56/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 88 Google reviews, listed on Google as “Septic system service”.
Based in Dallas, 20 mi away
55/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Septic system service”.
Based in Dallas, 19 mi away
54/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 241 Google reviews, listed on Google as “Plumber”.
Based in Plano, 3 mi away
54/100CR ScoreRanked #15 because of its Google rating and availability: 4.7★ from 145 Google reviews, open 24/7.
Based in Dallas, 9 mi away
54/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 61 Google reviews, listed on Google as “Septic system service”.
Based in Farmers Branch, 15 mi away
54/100CR ScoreRanked #17 because of its Google rating and review volume: 4.7★ from 1,550 Google reviews.
Based in Garland, 16 mi away
53/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 54 Google reviews, listed on Google as “Septic system service”.
#19 Total Septic
Based in Dallas, 19 mi away
53/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 86 Google reviews, listed on Google as “Septic system service”.
Based in Dallas, 18 mi away
53/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 55 Google reviews, listed on Google as “Plumber”.
Based in Dallas, 9 mi away
53/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Septic system service”.
Based in Rockwall, 17 mi away
52/100CR ScoreRanked #22 because of its Google rating and review volume: 4.9★ from 263 Google reviews.
Based in Addison, 13 mi away
52/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 51 Google reviews, listed on Google as “Septic system service”.
Based in Frisco, 11 mi away
52/100CR ScoreRanked #24 because of its Google rating and review volume: 4.9★ from 928 Google reviews.
#25 Excalibur Septic
Based in Wylie, 13 mi away
52/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Septic system service”.
Septic service companies 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 66 ranked septic service companies here; the rest are on their profiles.
Also serving Allen
8 more septic service companies 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 |
|---|---|---|
| Elliott's Septic Service LLC | 23 mi | |
| Greater Dallas Septic Pros & Repairs | 21 mi | |
| green line septic | 16 mi | |
| Mother Modern Plumbing, Sewer & Drain | 6 mi | |
| Southwest Fluid Connectors Inc | 5.0★ (2) | 13 mi |
| Texas Green Plumbing | 10 mi | |
| The Sewer Inspection Company, LLC | 1.0★ (1) | 18 mi |
| United Septic & Maintenance | 5.0★ (2) | 16 mi |
How we ranked Allen septic service companies
We scored 66 Allen septic service companies 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 Allen 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 |
Septic service companies in Allen: frequently asked questions
Who is the best septic service company in Allen?
By CR Score, the highest-ranked septic service company in Allen, TX is Royal Flush Septic, Inc. with a CR Score of 61/100. It has 4.8★ from 161 Google reviews. It is open 24/7. Underwood Plumbing and Septic (#2) and Heartland Grease & Septic (#3) follow. We ranked 66 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Allen?
ContractorsRanked ranks 66 septic service companies serving Allen, TX. 3 of them are based in Allen; the rest serve it from nearby towns. Another 8 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Allen are open 24/7?
30 ranked septic service companies in Allen post 24/7 hours. The highest-ranked are Royal Flush Septic, Inc. (#1), Underwood Plumbing and Septic (#2) and Heartland Grease & Septic (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Allen work on weekends?
44 of 66 ranked septic service companies post Saturday hours and 31 post Sunday hours. The highest-ranked open Saturdays are Royal Flush Septic, Inc. (#1), Underwood Plumbing and Septic (#2) and Heartland Grease & Septic (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Allen septic service companies have?
The median Google rating among 66 rated septic service companies in Allen is 4.9★, with a median of 51 reviews. Baker Brothers Plumbing, Air & Electric has the most, 24,389 reviews, and ranks #6. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank septic service companies?
Each septic service company 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 septic service companies outside Allen count in this ranking?
Yes, if they are within 25 mi of the Allen city center, our service radius for septic service companies. 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 septic service companies 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 Allen
- November 2026: CR Scores recalculated for 66 septic service companies serving Allen.
More septic service companies and Allen pages
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