58/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 51 Google reviews.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Best Septic Service Companies in Sun Prairie, WI (2026)
14 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Sun Prairie: Madison Sewer & Drain Cleaning, CR Score 58/100; 4.9★ from 51 Google reviews.
- 2
Most-reviewed: Eckmayer Inc., 92 Google reviews at 4.3★, the most of 14 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
14 Sun Prairie septic service companies are ranked here by CR Score, from ten published factors. The median Google rating is 4.8★ across 14 rated businesses.
Most of this list also appears on the Septic service companies in Madison ranking. See Septic service companies in Madison
Top 10 septic service companies in Sun Prairie at a glance
| Rank | Business | CR Score | Google rating | Based in | Best for |
|---|---|---|---|---|---|
| 1 | Madison Sewer & Drain Cleaning | 58 | 4.9★ (51) | Madison, 7 mi away | Overall |
| 2 | Eckmayer Inc. | 57 | 4.3★ (92) | Madison, 11 mi away | Most reviews |
| 3 | Country Water Well and Septic LLC | 56 | 5.0★ (21) | Madison, 11 mi away | — |
| 4 | A-1 Sewer Service Inc. | 55 | 4.8★ (12) | Madison, 7 mi away | — |
| 5 | Kalscheur Septic Services | 55 | 4.9★ (25) | Waunakee, 16 mi away | — |
| 6 | Honey Wagon Septic Services Inc | 54 | 4.3★ (20) | Stoughton, 18 mi away | — |
| 7 | Meinholz Excavating Inc. | 53 | 4.8★ (21) | Madison, 17 mi away | — |
| 8 | Dvorak Pumping, L.L.C. | 52 | 5.0★ (39) | Cottage Grove, 8 mi away | — |
| 9 | Rdr Septic & Well Services LLC | 52 | 4.4★ (19) | Watertown, 21 mi away | — |
| 10 | Wright Plumbing & Soil Testing, Inc. | 52 | 4.4★ (45) | Madison, 12 mi away | — |
The 14 best septic service companies in Sun Prairie, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Madison, 11 mi away
57/100CR ScoreRanked #2 because of its Google rating and review volume: 4.3★ from 92 Google reviews, the most in Sun Prairie.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 11 mi away
56/100CR ScoreRanked #3 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.
Based in Madison, 7 mi away
55/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 12 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waunakee, 16 mi away
55/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 25 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Stoughton, 18 mi away
54/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.3★ from 20 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Madison, 17 mi away
53/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.8★ from 21 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cottage Grove, 8 mi away
52/100CR ScoreRanked #8 because of its Google rating and review volume: 5.0★ from 39 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Watertown, 21 mi away
52/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.4★ from 19 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 12 mi away
52/100CR ScoreRanked #10 because of its Google rating and review volume: 4.4★ from 45 Google reviews.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#11 Sewer Ninjas
Based in Cottage Grove, 15 mi away
50/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 16 mi away
49/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 20 mi away
48/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Middleton, 20 mi away
48/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.1★ from 9 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
How we ranked Sun Prairie septic service companies
We scored 14 Sun Prairie 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 Sun Prairie 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 Sun Prairie: frequently asked questions
Who is the best septic service company in Sun Prairie?
By CR Score, the highest-ranked septic service company in Sun Prairie, WI is Madison Sewer & Drain Cleaning with a CR Score of 58/100. It has 4.9★ from 51 Google reviews. Eckmayer Inc. (#2) and Country Water Well and Septic LLC (#3) follow. We ranked 14 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Sun Prairie?
ContractorsRanked ranks 14 septic service companies serving Sun Prairie, WI. Counts are as of November 2026.
What Google rating do Sun Prairie septic service companies have?
The median Google rating among 14 rated septic service companies in Sun Prairie is 4.8★, with a median of 21 reviews. Eckmayer Inc. has the most, 92 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 Sun Prairie count in this ranking?
Yes, if they are within 25 mi of the Sun Prairie 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 Sun Prairie
- November 2026: CR Scores recalculated for 14 septic service companies serving Sun Prairie.
More septic service companies and Sun Prairie pages
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