58/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 815 Google reviews.
Best Septic Service Companies in Castlewood, CO (2026)
76 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Castlewood: Garvin's Plumbing and Sewer, CR Score 58/100; 4.8★ from 815 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): AAA Service Plumbing, Heating & Electric, posts 24/7 hours; ranked #2 of 76.
- 2
Most-reviewed: AAA Service Plumbing, Heating & Electric, 12,904 Google reviews at 4.8★, the most of 76 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
76 Castlewood septic service companies are ranked here by CR Score, from ten published factors. 26 are open 24/7, 49 open Saturdays and 36 open Sundays, based on posted hours. The median Google rating is 4.8★ across 76 rated businesses.
Top 10 septic service companies in Castlewood at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Garvin's Plumbing and Sewer | 58 | 4.8★ (815) | Englewood, 8 mi away | 24/7 | Overall |
| 2 | AAA Service Plumbing, Heating & Electric | 57 | 4.8★ (12,904) | Golden, 17 mi away | 24/7 | Emergencies, Most reviews |
| 3 | King Rooter & Plumbing | Plumbers Denver, CO | Drain Cleaning | Sewer & Water Line | Tankless Water Heater Repair | 56 | 4.7★ (479) | Denver, 10 mi away | 24/7 | — |
| 4 | Colorado Pumping | 56 | 5.0★ (111) | Aurora, 11 mi away | 24/7 | — |
| 5 | Simply Sewers - a Littleton Drain Cleaning Company | 56 | 4.9★ (75) | Columbine, 5 mi away | 24/7 | — |
| 6 | TCF Emergency Plumbing & Heating | 56 | 5.0★ (203) | Centennial, 3 mi away | 24/7 | — |
| 7 | Denver Sewer And Water | 55 | 4.8★ (22) | Denver, 9 mi away | Sat · Sun | — |
| 8 | Mr. Rooter Plumbing of Denver | 55 | 4.7★ (2,079) | Denver, 13 mi away | 24/7 | — |
| 9 | Southside Plumbing | 55 | 4.9★ (848) | Littleton, 8 mi away | Sat · Sun | — |
| 10 | Affordable Sewer and Plumbing Services | 55 | 5.0★ (26) | Thornton, 8 mi away | Sat · Evenings | — |
The 76 best septic service companies in Castlewood, 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 Golden, 17 mi away
57/100CR ScoreRanked #2 because of its Google rating and review volume: 4.8★ from 12,904 Google reviews, the most in Castlewood.
Based in Denver, 10 mi away
56/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.7★ from 479 Google reviews, listed on Google as “Plumber”.
Based in Aurora, 11 mi away
56/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 111 Google reviews, listed on Google as “Septic system service”.
Based in Columbine, 5 mi away
56/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 75 Google reviews, listed on Google as “Plumber”.
Based in Centennial, 3 mi away
56/100CR ScoreRanked #6 because of its Google rating and review volume: 5.0★ from 203 Google reviews.
Based in Denver, 9 mi away
55/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.8★ from 22 Google reviews, listed on Google as “Septic system service”.
Based in Denver, 13 mi away
55/100CR ScoreRanked #8 because of its Google rating and review volume: 4.7★ from 2,079 Google reviews.
Based in Littleton, 8 mi away
55/100CR ScoreRanked #9 because of its Google rating and review volume: 4.9★ from 848 Google reviews.
Based in Thornton, 8 mi away
55/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Septic system service”.
Based in Centennial, 12 mi away
54/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 105 Google reviews, listed on Google as “Septic system service”.
#12 Drain Terrier
Based in Littleton, 10 mi away
54/100CR ScoreRanked #12 because of its Google rating and review volume: 4.8★ from 416 Google reviews.
Based in Denver, 4 mi away
54/100CR ScoreRanked #13 because of its Google rating and review volume: 4.6★ from 222 Google reviews.
Based in Denver, 9 mi away
54/100CR ScoreRanked #14 because of its Google rating and review volume: 4.9★ from 525 Google reviews.
Based in Denver, 14 mi away
54/100CR ScoreRanked #15 because of its Google rating and review volume: 4.8★ from 496 Google reviews.
Based in Thornton, 13 mi away
54/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Septic system service”.
Based in Applewood, 2 mi away
54/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 91 Google reviews, listed on Google as “Plumber”.
Based in Denver, 12 mi away
54/100CR ScoreRanked #18 because of its Google rating and review volume: 4.6★ from 776 Google reviews.
Based in Westminster, 21 mi away
53/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 172 Google reviews, listed on Google as “Plumber”.
Based in Denver, 17 mi away
53/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 245 Google reviews, listed on Google as “Plumber”.
Based in Denver, 13 mi away
53/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.8★ from 45 Google reviews, listed on Google as “Plumber”.
Based in Aurora, 15 mi away
53/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Plumber”.
Based in Commerce City, 14 mi away
53/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.8★ from 160 Google reviews, listed on Google as “Plumber”.
Based in Aurora, 23 mi away
53/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.7★ from 62 Google reviews, listed on Google as “Septic system service”.
Based in Wheat Ridge, 16 mi away
53/100CR ScoreRanked #25 because of its Google rating and review volume: 4.8★ from 363 Google reviews.
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 76 ranked septic service companies here; the rest are on their profiles.
Also serving Castlewood
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 | 14 mi | |
| Affordable Septic Pumping | 5.0★ (2) | 22 mi |
| American Sewer and Water | 5.0★ (1) | 19 mi |
| Colorado Septic Maintenance & Repair | 10 mi | |
| Coronado Excavation | 16 mi | |
| Elite Rooter | 1 mi | |
| Elite Rooter Plumbers | 18 mi | |
| Lewis Water & Sewer | 5.0★ (2) | 18 mi |
| Lyons Pumping | 8 mi | |
| Mario's Plumbing & Sewer Services | 6 mi | |
| MC Water And Sewer LLC | 6 mi | |
| McDonald Farms Enterprises Inc. | 5.0★ (1) | 15 mi |
| Mr. Preventative Sewer & Drain | 13 mi | |
| My Plumbing and Sewer Aurora Pro | 5.0★ (2) | 6 mi |
| Sewer Inspections Colorado | 3.0★ (2) | 19 mi |
| Sewer Lines Parker | 7 mi | |
| TBC Septic | 5.0★ (1) | 20 mi |
| TCF Sewer & Excavating | 10 mi | |
| The Sewer Network | 7 mi |
How we ranked Castlewood septic service companies
We scored 76 Castlewood 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 5, 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 Castlewood 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 Castlewood: frequently asked questions
Who is the best septic service company in Castlewood?
By CR Score, the highest-ranked septic service company in Castlewood, CO is Garvin's Plumbing and Sewer with a CR Score of 58/100. It has 4.8★ from 815 Google reviews. It is open 24/7. AAA Service Plumbing, Heating & Electric (#2) and King Rooter & Plumbing | Plumbers Denver, CO | Drain Cleaning | Sewer & Water Line | Tankless Water Heater Repair (#3) follow. We ranked 76 septic service companies on ten factors, last updated November 5, 2026.
How many septic service companies are there in Castlewood?
ContractorsRanked ranks 76 septic service companies serving Castlewood, CO. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Castlewood are open 24/7?
26 ranked septic service companies in Castlewood post 24/7 hours. The highest-ranked are Garvin's Plumbing and Sewer (#1), AAA Service Plumbing, Heating & Electric (#2) and King Rooter & Plumbing | Plumbers Denver, CO | Drain Cleaning | Sewer & Water Line | Tankless Water Heater Repair (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Castlewood work on weekends?
49 of 76 ranked septic service companies post Saturday hours and 36 post Sunday hours. The highest-ranked open Saturdays are Garvin's Plumbing and Sewer (#1), AAA Service Plumbing, Heating & Electric (#2) and King Rooter & Plumbing | Plumbers Denver, CO | Drain Cleaning | Sewer & Water Line | Tankless Water Heater Repair (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Castlewood septic service companies have?
The median Google rating among 76 rated septic service companies in Castlewood is 4.8★, with a median of 33 reviews. AAA Service Plumbing, Heating & Electric has the most, 12,904 reviews, and ranks #2. 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 Castlewood count in this ranking?
Yes, if they are within 25 mi of the Castlewood 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 Castlewood
- November 2026: CR Scores recalculated for 76 septic service companies serving Castlewood.
- November 2026: 1 duplicate listing merged.
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