60/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 82 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Johnstown, CO (2026)
48 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Johnstown: Portable Restroom Solutions, CR Score 60/100; 4.8★ from 82 Google reviews; open 7 days a week.
- 2
Best for emergencies (open 24/7): Suc N Up LLC, posts 24/7 hours; ranked #2 of 48.
- 3
Most-reviewed: Lion Home Service, 5,912 Google reviews at 4.7★, the most of 48 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
48 Johnstown septic service companies are ranked here by CR Score, from ten published factors. 16 are open 24/7, 28 open Saturdays and 20 open Sundays, based on posted hours. The median Google rating is 4.8★ across 48 rated businesses.
Top 10 septic service companies in Johnstown at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Portable Restroom Solutions | 60 | 4.8★ (82) | Johnstown | Sat · Sun · Evenings | Overall |
| 2 | Suc N Up LLC | 58 | 4.5★ (131) | Longmont, 10 mi away | 24/7 | Emergencies |
| 3 | Lion Home Service | 57 | 4.7★ (5,912) | Fort Collins, 15 mi away | 24/7 | Most reviews |
| 4 | Boonstra Excavation LLC | 56 | 5.0★ (78) | Fort Collins, 10 mi away | Sat | — |
| 5 | Crow Creek Septic Services | 56 | 4.9★ (84) | Fort Collins, 23 mi away | 24/7 | — |
| 6 | Elite Rooter Plumbers | 55 | 4.6★ (460) | Berthoud, 4 mi away | 24/7 | — |
| 7 | Mr. Rooter Plumbing of Northern Colorado | 55 | 4.5★ (1,331) | Firestone, 9 mi away | 24/7 | — |
| 8 | United Site Services | 55 | 1.8★ (10) | Loveland, 1 mi away | 24/7 | — |
| 9 | Front Range Septic | 54 | 4.6★ (34) | Greeley, 19 mi away | 24/7 | — |
| 10 | AAA Service Plumbing, Heating & Electric | 54 | 5.0★ (426) | Fort Collins, 17 mi away | 24/7 | — |
The 48 best septic service companies in Johnstown, 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.
#2 Suc N Up LLC
Based in Longmont, 10 mi away
58/100CR ScoreRanked #2 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, 15 mi away
57/100CR ScoreRanked #3 because of its Google rating and review volume: 4.7★ from 5,912 Google reviews, the most in Johnstown.
Based in Fort Collins, 10 mi away
56/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 78 Google reviews, listed on Google as “Septic system service”.
Based in Fort Collins, 23 mi away
56/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 84 Google reviews, listed on Google as “Septic system service”.
Based in Berthoud, 4 mi away
55/100CR ScoreRanked #6 because of its Google rating and review volume: 4.6★ from 460 Google reviews.
Based in Firestone, 9 mi away
55/100CR ScoreRanked #7 because of its Google rating and review volume: 4.5★ from 1,331 Google reviews.
Based in Loveland, 1 mi away
55/100CR ScoreRanked #8 because of its Google rating and trade focus: 1.8★ from 10 Google reviews, listed on Google as “Septic system service”.
Based in Greeley, 19 mi away
54/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.6★ from 34 Google reviews, listed on Google as “Septic system service”.
Based in Fort Collins, 17 mi away
54/100CR ScoreRanked #10 because of its Google rating and review volume: 5.0★ from 426 Google reviews.
Based in Fort Collins, 16 mi away
54/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.6★ from 171 Google reviews, listed on Google as “Plumber”.
Based in Fort Collins, 12 mi away
53/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.8★ from 61 Google reviews, listed on Google as “Septic system service”.
Based in Greeley, 12 mi away
52/100CR ScoreRanked #13 because of its Google rating and review volume: 4.7★ from 157 Google reviews.
Based in Fort Collins, 25 mi away
52/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 241 Google reviews, listed on Google as “Plumber”.
Based in Fort Collins, 11 mi away
52/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Septic system service”.
Based in Windsor, 7 mi away
52/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.2★ from 111 Google reviews, listed on Google as “Plumber”.
Based in Loveland, 8 mi away
52/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Septic system service”.
Based in Fort Lupton, 21 mi away
52/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 92 Google reviews, listed on Google as “Septic system service”.
Based in Fort Collins, 9 mi away
51/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Septic system service”.
Based in Fort Collins, 19 mi away
50/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Plumber”.
Based in Greeley, 10 mi away
50/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Septic system service”.
Based in Fort Collins, 8 mi away
50/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Septic system service”.
Based in Greeley, 8 mi away
50/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.0★ from 8 Google reviews, listed on Google as “Septic system service”.
Based in Berthoud, 13 mi away
49/100CR ScoreRanked #24 because of its Google rating and availability: 5.0★ from 15 Google reviews, open 24/7.
#25 Roto Rooter
Based in Greeley, 10 mi away
49/100CR ScoreRanked #25 because of its Google rating and review volume: 4.0★ from 118 Google reviews.
All 48 septic service companies
#1 to #25 are shown in full above. Here are #26 to #48, in CR Score order; each links to its profile.
Also serving Johnstown
19 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 | 15 mi | |
| ABC Drain & Sewer Cleaning | 5.0★ (1) | 16 mi |
| Cate Brothers | In Johnstown | |
| Colorado Trenchless | Sewer Line & Septic Repair | 5.0★ (1) | 9 mi |
| Custom Excavating and Grading | 5.0★ (1) | In Johnstown |
| Greywater Inc | 22 mi | |
| Haystack Custom Ag. & Septic Service | 5.0★ (2) | 9 mi |
| Integrity Water and Sewer LLC. | 17 mi | |
| J&J Construction Concepts | 5 mi | |
| Ken Millette Plumbing, LLC | 13 mi | |
| Lion Home Service Greeley | 11 mi | |
| Lion Rooter & Sewer | 11 mi | |
| Mike's Property Service | 17 mi | |
| Rocky Mountain Septic Solutions | 5.0★ (2) | 17 mi |
| Septic Hotline | 5.0★ (1) | 10 mi |
| Septic Services in Fort Collins | 15 mi | |
| Sewerooter Service | 5.0★ (2) | 12 mi |
| Top-Notch Plumbing, Heating & Air | 10 mi | |
| United Rentals - Reliable Onsite Services | 5.0★ (1) | 14 mi |
How we ranked Johnstown septic service companies
We scored 48 Johnstown 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 8, 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 Johnstown 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 Johnstown: frequently asked questions
Who is the best septic service company in Johnstown?
By CR Score, the highest-ranked septic service company in Johnstown, CO is Portable Restroom Solutions with a CR Score of 60/100. It has 4.8★ from 82 Google reviews. It is open 7 days a week. Suc N Up LLC (#2) and Lion Home Service (#3) follow. We ranked 48 septic service companies on ten factors, last updated November 8, 2026.
How many septic service companies are there in Johnstown?
ContractorsRanked ranks 48 septic service companies serving Johnstown, CO. 1 of them is based in Johnstown; the rest serve it from nearby towns. Another 19 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Johnstown are open 24/7?
16 ranked septic service companies in Johnstown post 24/7 hours. The highest-ranked are Suc N Up LLC (#2), Lion Home Service (#3) and Crow Creek Septic Services (#5). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Johnstown work on weekends?
28 of 48 ranked septic service companies post Saturday hours and 20 post Sunday hours. The highest-ranked open Saturdays are Portable Restroom Solutions (#1), Suc N Up LLC (#2) and Lion Home Service (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Johnstown septic service companies have?
The median Google rating among 48 rated septic service companies in Johnstown is 4.8★, with a median of 19 reviews. Lion Home Service has the most, 5,912 reviews, and ranks #3. 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 Johnstown count in this ranking?
Yes, if they are within 25 mi of the Johnstown 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 Johnstown
- November 2026: CR Scores recalculated for 48 septic service companies serving Johnstown.
More septic service companies and Johnstown pages
Septic service companies near Johnstown
- Septic service companies in Loveland, CO44 ranked
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Other trades in Johnstown
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- All contractors in Johnstown