55/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Waverly, IA (2026)
9 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Waverly: Denver-Waverly Septic Pumping, CR Score 55/100; 5.0★ from 4 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Cedar Valley Water and Sewer, posts 24/7 hours; ranked #3 of 9.
- 5
Most-reviewed: Crystal, 32 Google reviews at 4.2★, the most of 9 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
9 Waverly septic service companies are ranked here by CR Score, from ten published factors. 3 are open 24/7, 5 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.8★ across 9 rated businesses.
Most of this list also appears on the Septic service companies in Waterloo ranking. See Septic service companies in Waterloo
Top 9 septic service companies in Waverly at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Denver-Waverly Septic Pumping | 55 | 5.0★ (4) | Waterloo, 16 mi away | 24/7 | Overall |
| 2 | Green's Septic Tank Services | 54 | 5.0★ (4) | Cedar Falls, 10 mi away | Sat · Sun | — |
| 3 | Cedar Valley Water and Sewer | 54 | 5.0★ (13) | Cedar Falls, 18 mi away | 24/7 | Emergencies |
| 4 | Eastern Iowa Septic | 54 | 5.0★ (7) | Waterloo, 25 mi away | 24/7 | — |
| 5 | Crystal | 53 | 4.2★ (32) | Waverly | — | Most reviews |
| 6 | Nick's Sewer & Drain Cleaning | 49 | 3.7★ (12) | Waterloo, 18 mi away | — | — |
| 7 | All Star Plumbing & Heating, Inc | 49 | 4.8★ (31) | Waterloo, 22 mi away | — | — |
| 8 | Herold's Sewer & Drain Services | 47 | 3.2★ (5) | Waterloo, 16 mi away | — | — |
| 9 | Mick Gage Plumbing & Heating | 45 | 3.6★ (15) | Charles City, 25 mi away | Sat | — |
The 9 best septic service companies in Waverly, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Cedar Falls, 10 mi away
54/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cedar Falls, 18 mi away
54/100CR ScoreRanked #3 because of its Google rating and review volume: 5.0★ from 13 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waterloo, 25 mi away
54/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#5 Crystal
Based in Waverly
53/100CR ScoreRanked #5 because of its Google rating and review volume: 4.2★ from 32 Google reviews, the most in Waverly.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waterloo, 18 mi away
49/100CR ScoreRanked #6 because of its Google rating and review volume: 3.7★ from 12 Google reviews.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Waterloo, 22 mi away
49/100CR ScoreRanked #7 because of its Google rating and review volume: 4.8★ from 31 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waterloo, 16 mi away
47/100CR ScoreRanked #8 because of its Google rating and trade focus: 3.2★ from 5 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Charles City, 25 mi away
45/100CR ScoreRanked #9 because of its Google rating and review volume: 3.6★ from 15 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
How we ranked Waverly septic service companies
We scored 9 Waverly 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 Waverly 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 Waverly: frequently asked questions
Who is the best septic service company in Waverly?
By CR Score, the highest-ranked septic service company in Waverly, IA is Denver-Waverly Septic Pumping with a CR Score of 55/100. It has 5.0★ from 4 Google reviews. It is open 24/7. Green's Septic Tank Services (#2) and Cedar Valley Water and Sewer (#3) follow. We ranked 9 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Waverly?
ContractorsRanked ranks 9 septic service companies serving Waverly, IA. 1 of them is based in Waverly; the rest serve it from nearby towns. Counts are as of November 2026.
Which septic service companies in Waverly are open 24/7?
3 ranked septic service companies in Waverly post 24/7 hours. The highest-ranked are Denver-Waverly Septic Pumping (#1), Cedar Valley Water and Sewer (#3) and Eastern Iowa Septic (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Waverly work on weekends?
5 of 9 ranked septic service companies post Saturday hours and 4 post Sunday hours. The highest-ranked open Saturdays are Denver-Waverly Septic Pumping (#1), Green's Septic Tank Services (#2) and Cedar Valley Water and Sewer (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Waverly septic service companies have?
The median Google rating among 9 rated septic service companies in Waverly is 4.8★, with a median of 12 reviews. Crystal has the most, 32 reviews, and ranks #5. 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 Waverly count in this ranking?
Yes, if they are within 25 mi of the Waverly 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 Waverly
- November 2026: CR Scores recalculated for 9 septic service companies serving Waverly.
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