57/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 12,904 Google reviews, the most in Louisville.
Best Septic Service Companies in Louisville, CO (2026)
68 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Louisville: AAA Service Plumbing, Heating & Electric, CR Score 57/100; 4.8★ from 12,904 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): King Rooter & Plumbing | Plumber Boulder, CO | Drain Cleaning | Sewer & Water Line | Tankless Water Heater Repair, posts 24/7 hours; ranked #2 of 68.
- 10
Most-reviewed: Mr. Rooter Plumbing of Denver, 2,079 Google reviews at 4.7★, the most of 68 ranked after AAA Service Plumbing, Heating & Electric; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
68 Louisville septic service companies are ranked here by CR Score, from ten published factors. 24 are open 24/7, 42 open Saturdays and 30 open Sundays, based on posted hours. The median Google rating is 4.8★ across 68 rated businesses.
Top 10 septic service companies in Louisville at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | AAA Service Plumbing, Heating & Electric | 57 | 4.8★ (12,904) | Golden, 18 mi away | 24/7 | Overall |
| 2 | King Rooter & Plumbing | Plumber Boulder, CO | Drain Cleaning | Sewer & Water Line | Tankless Water Heater Repair | 57 | 4.9★ (190) | Boulder, 8 mi away | 24/7 | Emergencies |
| 3 | All Sewer and Plumbing Services LLC | 56 | 4.9★ (172) | Westminster, 9 mi away | 24/7 | — |
| 4 | Garvin's Plumbing and Sewer | 56 | 4.9★ (66) | Broomfield, 5 mi away | 24/7 | — |
| 5 | Suc N Up LLC | 56 | 4.5★ (131) | Longmont, 17 mi away | 24/7 | — |
| 6 | American Plumbing & Sewer | 55 | 5.0★ (241) | Fort Collins, 13 mi away | Sat · Sun | — |
| 7 | Garvin's Plumbing and Sewer | 55 | 4.8★ (815) | Englewood, 23 mi away | 24/7 | — |
| 8 | Triple S Sanitary Sewer Services LLC | 54 | 4.9★ (245) | Denver, 13 mi away | 24/7 | — |
| 9 | Colorado Pumping | 54 | 5.0★ (111) | Aurora, 19 mi away | 24/7 | — |
| 10 | Mr. Rooter Plumbing of Denver | 54 | 4.7★ (2,079) | Denver, 17 mi away | 24/7 | Most reviews |
The 68 best septic service companies in Louisville, 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 Boulder, 8 mi away
57/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 190 Google reviews, listed on Google as “Plumber”.
Based in Westminster, 9 mi away
56/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 172 Google reviews, listed on Google as “Plumber”.
Based in Broomfield, 5 mi away
56/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 66 Google reviews, listed on Google as “Plumber”.
#5 Suc N Up LLC
Based in Longmont, 17 mi away
56/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.5★ from 131 Google reviews, listed on Google as “Septic system service”.
Based in Fort Collins, 13 mi away
55/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 241 Google reviews, listed on Google as “Plumber”.
Based in Englewood, 23 mi away
55/100CR ScoreRanked #7 because of its Google rating and review volume: 4.8★ from 815 Google reviews.
Based in Denver, 13 mi away
54/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 245 Google reviews, listed on Google as “Plumber”.
Based in Aurora, 19 mi away
54/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 111 Google reviews, listed on Google as “Septic system service”.
Based in Denver, 17 mi away
54/100CR ScoreRanked #10 because of its Google rating and review volume: 4.7★ from 2,079 Google reviews.
Based in Denver, 20 mi away
54/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.7★ from 479 Google reviews, listed on Google as “Plumber”.
#12 TYCO Plumbing
Based in Boulder, 10 mi away
53/100CR ScoreRanked #12 because of its Google rating and review volume: 5.0★ from 766 Google reviews.
Based in Wheat Ridge, 15 mi away
53/100CR ScoreRanked #13 because of its Google rating and review volume: 4.8★ from 363 Google reviews.
Based in Denver, 16 mi away
53/100CR ScoreRanked #14 because of its Google rating and review volume: 4.8★ from 496 Google reviews.
Based in Westminster, 12 mi away
52/100CR ScoreRanked #15 because of its Google rating and review volume: 4.6★ from 352 Google reviews.
Based in Aurora, 18 mi away
52/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Plumber”.
Based in Denver, 22 mi away
52/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 22 Google reviews, listed on Google as “Septic system service”.
Based in Denver, 17 mi away
52/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.8★ from 45 Google reviews, listed on Google as “Plumber”.
Based in Commerce City, 18 mi away
52/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.8★ from 160 Google reviews, listed on Google as “Plumber”.
Based in Commerce City, 17 mi away
52/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 79 Google reviews, listed on Google as “Plumber”.
Based in Fort Lupton, 19 mi away
52/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 92 Google reviews, listed on Google as “Septic system service”.
Based in Denver, 18 mi away
52/100CR ScoreRanked #22 because of its Google rating and review volume: 4.6★ from 776 Google reviews.
Based in Thornton, 21 mi away
52/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Septic system service”.
#24 Sewer Lines Only
Based in Lakewood, 17 mi away
52/100CR ScoreRanked #24 because of its Google rating and review volume: 4.9★ from 960 Google reviews.
Based in Erie, 5 mi away
51/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.1★ from 17 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 68 ranked septic service companies here; the rest are on their profiles.
Also serving Louisville
20 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 |
|---|---|---|
| A-Acme Sanitary & Sewer Services | 5.0★ (2) | 15 mi |
| AAR Sewer & Water - Lakewood | 20 mi | |
| AAR Sewer & Water - Thornton | 15 mi | |
| AB Septic | 5.0★ (1) | 8 mi |
| ABC Drain & Sewer Cleaning | 5.0★ (1) | 14 mi |
| American Sewer and Water | 5.0★ (1) | 13 mi |
| Coronado Excavation | 16 mi | |
| Elite Rooter Plumbers | 12 mi | |
| Integrity Water and Sewer LLC. | 13 mi | |
| KB Sewer & Drain Services LLC | 12 mi | |
| Ken Millette Plumbing, LLC | 16 mi | |
| Lewis Water & Sewer | 5.0★ (2) | 17 mi |
| Mario's Plumbing & Sewer Services | 25 mi | |
| MC Water And Sewer LLC | 23 mi | |
| McDonald Farms Enterprises Inc. | 5.0★ (1) | 15 mi |
| Mr. Preventative Sewer & Drain | 21 mi | |
| Poseidon Plumbing | 16 mi | |
| Sewer Inspections Colorado | 3.0★ (2) | 13 mi |
| Sewer Lines | 20 mi | |
| Sewer Lines Parker | 24 mi |
How we ranked Louisville septic service companies
We scored 68 Louisville 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 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 Louisville 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 Louisville: frequently asked questions
Who is the best septic service company in Louisville?
By CR Score, the highest-ranked septic service company in Louisville, CO is AAA Service Plumbing, Heating & Electric with a CR Score of 57/100. It has 4.8★ from 12,904 Google reviews. It is open 24/7. King Rooter & Plumbing | Plumber Boulder, CO | Drain Cleaning | Sewer & Water Line | Tankless Water Heater Repair (#2) and All Sewer and Plumbing Services LLC (#3) follow. We ranked 68 septic service companies on ten factors, last updated November 2, 2026.
How many septic service companies are there in Louisville?
ContractorsRanked ranks 68 septic service companies serving Louisville, CO. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Louisville are open 24/7?
24 ranked septic service companies in Louisville post 24/7 hours. The highest-ranked are AAA Service Plumbing, Heating & Electric (#1), King Rooter & Plumbing | Plumber Boulder, CO | Drain Cleaning | Sewer & Water Line | Tankless Water Heater Repair (#2) and All Sewer and Plumbing Services LLC (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Louisville work on weekends?
42 of 68 ranked septic service companies post Saturday hours and 30 post Sunday hours. The highest-ranked open Saturdays are AAA Service Plumbing, Heating & Electric (#1), King Rooter & Plumbing | Plumber Boulder, CO | Drain Cleaning | Sewer & Water Line | Tankless Water Heater Repair (#2) and All Sewer and Plumbing Services LLC (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Louisville septic service companies have?
The median Google rating among 68 rated septic service companies in Louisville is 4.8★, with a median of 32 reviews. AAA Service Plumbing, Heating & Electric has the most, 12,904 reviews, and ranks #1. 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 Louisville count in this ranking?
Yes, if they are within 25 mi of the Louisville 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 Louisville
- November 2026: CR Scores recalculated for 68 septic service companies serving Louisville.
More septic service companies and Louisville pages
Septic service companies near Louisville
- Septic service companies in Lafayette, CO70 ranked
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- Septic service companies in Federal Heights, CO80 ranked
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- Septic service companies in Sherrelwood, CO79 ranked
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