59/100CR Score
Ranked #1 because of its Google rating and review volume: 4.7★ from 5,912 Google reviews, the most in Windsor.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Windsor, CO (2026)
41 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Windsor: Lion Home Service, CR Score 59/100; 4.7★ from 5,912 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Crow Creek Septic Services, posts 24/7 hours; ranked #2 of 41.
- 4
Most-reviewed: Mr. Rooter Plumbing of Northern Colorado, 1,331 Google reviews at 4.5★, the most of 41 ranked after Lion Home Service; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
41 Windsor septic service companies are ranked here by CR Score, from ten published factors. 16 are open 24/7, 27 open Saturdays and 19 open Sundays, based on posted hours. The median Google rating is 4.8★ across 41 rated businesses.
Top 10 septic service companies in Windsor at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Lion Home Service | 59 | 4.7★ (5,912) | Fort Collins, 8 mi away | 24/7 | Overall |
| 2 | Crow Creek Septic Services | 58 | 4.9★ (84) | Fort Collins, 13 mi away | 24/7 | Emergencies |
| 3 | Portable Restroom Solutions | 58 | 4.8★ (82) | Johnstown, 8 mi away | Sat · Sun · Evenings | — |
| 4 | Mr. Rooter Plumbing of Northern Colorado | 57 | 4.5★ (1,331) | Firestone, 2 mi away | 24/7 | Most reviews |
| 5 | AAA Service Plumbing, Heating & Electric | 56 | 5.0★ (426) | Fort Collins, 9 mi away | 24/7 | — |
| 6 | Suc N Up LLC | 56 | 4.5★ (131) | Longmont, 19 mi away | 24/7 | — |
| 7 | Drain Doctors Sewer & Drain | 55 | 4.6★ (171) | Fort Collins, 10 mi away | 24/7 | — |
| 8 | Boonstra Excavation LLC | 55 | 5.0★ (78) | Fort Collins, 14 mi away | Sat | — |
| 9 | Front Range Septic | 55 | 4.6★ (34) | Greeley, 17 mi away | 24/7 | — |
| 10 | B & J Septic Services | 55 | 4.8★ (16) | Fort Collins, 2 mi away | Sat | — |
The 41 best septic service companies in Windsor, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Fort Collins, 13 mi away
58/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 84 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Johnstown, 8 mi away
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 82 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Firestone, 2 mi away
57/100CR ScoreRanked #4 because of its Google rating and review volume: 4.5★ from 1,331 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fort Collins, 9 mi away
56/100CR ScoreRanked #5 because of its Google rating and review volume: 5.0★ from 426 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
#6 Suc N Up LLC
Based in Longmont, 19 mi away
56/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.5★ from 131 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fort Collins, 10 mi away
55/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.6★ from 171 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fort Collins, 14 mi away
55/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 78 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Greeley, 17 mi away
55/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.6★ from 34 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fort Collins, 2 mi away
55/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Berthoud, 11 mi away
54/100CR ScoreRanked #11 because of its Google rating and review volume: 4.6★ from 460 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Windsor
54/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.2★ from 111 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fort Collins, 11 mi away
53/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.8★ from 61 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fort Collins, 2 mi away
53/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Greeley, 12 mi away
52/100CR ScoreRanked #15 because of its Google rating and review volume: 4.7★ from 157 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Greeley, 1 mi away
52/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Loveland, 10 mi away
52/100CR ScoreRanked #17 because of its Google rating and trade focus: 1.8★ from 10 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fort Collins, 13 mi away
52/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Loveland, 9 mi away
52/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fort Collins, 3 mi away
51/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fort Collins, 17 mi away
51/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#22 Sep-Tech
Based in Fort Collins, 25 mi away
50/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#23 Roto Rooter
Based in Greeley, 11 mi away
49/100CR ScoreRanked #23 because of its Google rating and review volume: 4.0★ from 118 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fort Collins, 9 mi away
49/100CR ScoreRanked #24 because of its Google rating and trade focus: 3.7★ from 6 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fort Collins, 12 mi away
49/100CR ScoreRanked #25 because of its Google rating and trade focus: 1.7★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
All 41 septic service companies
#1 to #25 are shown in full above. Here are #26 to #41, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | The Drain Pros LLC | 49 | 5.0★ (35) | 9 mi |
| 27 | AB Dirt Works, Inc. | 48 | 5.0★ (35) | 4 mi |
| 28 | Relief Home Services, LLC | 48 | 4.2★ (32) | 10 mi |
| 29 | Legacy Excavation LLC | 48 | 5.0★ (15) | 19 mi |
| 30 | OnGrade Plumbing & Excavating | 48 | 5.0★ (11) | 11 mi |
| 31 | Sullivan Septic & Excavating | 47 | 4.0★ (8) | 18 mi |
| 32 | American Sewer and Utilities | 47 | 5.0★ (10) | 17 mi |
| 33 | Drain Solvers The Pros | 47 | 4.7★ (51) | 23 mi |
| 34 | Moose and Bear Excavation | 46 | 4.7★ (15) | 11 mi |
| 35 | Buxman Excavating LLC | 46 | 5.0★ (4) | 6 mi |
| 36 | The Drain Check | A drain, sewer, cleaning and septic inspection company | 45 | 4.9★ (31) | 24 mi |
| 37 | Advanced Plumbing Services LLC | 43 | 4.5★ (11) | 11 mi |
| 38 | Elite Dirt & Demo, LLC | 42 | 2.6★ (5) | 25 mi |
| 39 | K2 Excavation | 41 | 5.0★ (4) | 18 mi |
| 40 | Brenner Builders, LLC /Aspen Concrete/Diamond Excavation | 41 | 5.0★ (3) | 16 mi |
| 41 | Nixcavating, Inc. | 41 | 4.5★ (21) | 25 mi |
Also serving Windsor
17 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-1 Septic Service | 20 mi | |
| ABC Drain & Sewer Cleaning | 5.0★ (1) | 24 mi |
| all pro septic pumping | 5.0★ (2) | 19 mi |
| Colorado Trenchless | Sewer Line & Septic Repair | 5.0★ (1) | 2 mi |
| Greywater Inc | 14 mi | |
| Haystack Custom Ag. & Septic Service | 5.0★ (2) | 2 mi |
| J&J Construction Concepts | 5 mi | |
| Ken Millette Plumbing, LLC | 21 mi | |
| Lion Home Service Greeley | 10 mi | |
| Lion Rooter & Sewer | 10 mi | |
| Mike's Property Service | 11 mi | |
| Rocky Mountain Septic Solutions | 5.0★ (2) | 11 mi |
| Septic Hotline | 5.0★ (1) | 17 mi |
| Septic Services in Fort Collins | 8 mi | |
| Sewerooter Service | 5.0★ (2) | 12 mi |
| Top-Notch Plumbing, Heating & Air | 11 mi | |
| United Rentals - Reliable Onsite Services | 5.0★ (1) | 12 mi |
How we ranked Windsor septic service companies
We scored 41 Windsor 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 Windsor 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 Windsor: frequently asked questions
Who is the best septic service company in Windsor?
By CR Score, the highest-ranked septic service company in Windsor, CO is Lion Home Service with a CR Score of 59/100. It has 4.7★ from 5,912 Google reviews. It is open 24/7. Crow Creek Septic Services (#2) and Portable Restroom Solutions (#3) follow. We ranked 41 septic service companies on ten factors, last updated November 2, 2026.
How many septic service companies are there in Windsor?
ContractorsRanked ranks 41 septic service companies serving Windsor, CO. 1 of them is based in Windsor; the rest serve it from nearby towns. Another 17 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Windsor are open 24/7?
16 ranked septic service companies in Windsor post 24/7 hours. The highest-ranked are Lion Home Service (#1), Crow Creek Septic Services (#2) and Mr. Rooter Plumbing of Northern Colorado (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Windsor work on weekends?
27 of 41 ranked septic service companies post Saturday hours and 19 post Sunday hours. The highest-ranked open Saturdays are Lion Home Service (#1), Crow Creek Septic Services (#2) and Portable Restroom Solutions (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Windsor septic service companies have?
The median Google rating among 41 rated septic service companies in Windsor is 4.8★, with a median of 21 reviews. Lion Home Service has the most, 5,912 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 Windsor count in this ranking?
Yes, if they are within 25 mi of the Windsor 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 Windsor
- November 2026: CR Scores recalculated for 41 septic service companies serving Windsor.
More septic service companies and Windsor pages
Septic service companies near Windsor
- Septic service companies in Johnstown, CO48 ranked
- Septic service companies in Loveland, CO44 ranked
- Septic service companies in Greeley, CO32 ranked
- Septic service companies in Fort Collins, CO39 ranked
- Septic service companies in Evans, CO34 ranked
- Septic service companies in Longmont, CO49 ranked
- Septic service companies in Firestone, CO67 ranked
- Septic service companies in Frederick, CO67 ranked
- Septic service companies in Erie, CO71 ranked
- Septic service companies in Brighton, CO68 ranked
Other trades in Windsor
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- Bathroom remodelers in Windsor160 ranked
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- Tile installers in Windsor49 ranked
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- All contractors in Windsor