62/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 252 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 Greenfield, WI (2026)
46 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Greenfield: Guardian Well & Septic Inspections, CR Score 62/100; 5.0★ from 252 Google reviews; open Saturdays until 1 PM.
- 2
Best for emergencies (open 24/7): Mr. Rooter Plumbing of Southeast WI, posts 24/7 hours; ranked #2 of 46.
- 9
Most-reviewed: Rozga Plumbing Corp., 742 Google reviews at 4.8★, the most of 46 ranked; ranked #9.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
46 Greenfield septic service companies are ranked here by CR Score, from ten published factors. 13 are open 24/7, 19 open Saturdays and 16 open Sundays, based on posted hours. The median Google rating is 4.8★ across 46 rated businesses.
Most of this list also appears on the Septic service companies in West Allis ranking. See Septic service companies in West Allis
Top 10 septic service companies in Greenfield at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Guardian Well & Septic Inspections | 62 | 5.0★ (252) | New Berlin, 7 mi away | Sat | Overall |
| 2 | Mr. Rooter Plumbing of Southeast WI | 57 | 4.6★ (625) | Brookfield, 10 mi away | 24/7 | Emergencies |
| 3 | MGA Sewer, Water & Gas Plumbing Contractor 24hr Emergency Services Available 7 Days A Week | 57 | 4.8★ (91) | Milwaukee, 11 mi away | 24/7 | — |
| 4 | Econo Sewer & Drain | 57 | 4.8★ (282) | Racine, 20 mi away | 24/7 | — |
| 5 | Walter Stanley Septic | 56 | 4.5★ (57) | Waukesha, 9 mi away | Sat | — |
| 6 | Sewer Ninjas | 56 | 5.0★ (287) | Brookfield, 9 mi away | — | — |
| 7 | Discount Drain & Sewer Cleaning LLC | 55 | 5.0★ (9) | Milwaukee, 1 mi away | 24/7 | — |
| 8 | Tuffy's Sewer and Drain | 55 | 4.7★ (148) | Wauwatosa, 6 mi away | Sat | — |
| 9 | Rozga Plumbing Corp. | 55 | 4.8★ (742) | West Allis, 4 mi away | — | Most reviews |
| 10 | Professional Drain and Sewer | 54 | 4.8★ (24) | Mount Pleasant, 5 mi away | Sat · Sun · Evenings | — |
The 46 best septic service companies in Greenfield, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Brookfield, 10 mi away
57/100CR ScoreRanked #2 because of its Google rating and review volume: 4.6★ from 625 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Milwaukee, 11 mi away
57/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 91 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Racine, 20 mi away
57/100CR ScoreRanked #4 because of its Google rating and review volume: 4.8★ from 282 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waukesha, 9 mi away
56/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.5★ from 57 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#6 Sewer Ninjas
Based in Brookfield, 9 mi away
56/100CR ScoreRanked #6 because of its Google rating and review volume: 5.0★ from 287 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Milwaukee, 1 mi away
55/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Drainage service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wauwatosa, 6 mi away
55/100CR ScoreRanked #8 because of its Google rating and review volume: 4.7★ from 148 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in West Allis, 4 mi away
55/100CR ScoreRanked #9 because of its Google rating and review volume: 4.8★ from 742 Google reviews, the most in Greenfield.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mount Pleasant, 5 mi away
54/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 24 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Caledonia, 12 mi away
54/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 26 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Burlington, 21 mi away
54/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Milwaukee, 11 mi away
54/100CR ScoreRanked #13 because of its Google rating and trade focus: 2.1★ 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 Oconomowoc, 21 mi away
54/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 35 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#15 Aero-Stream LLC
Based in Hartland, 21 mi away
53/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 108 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Germantown, 19 mi away
53/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.8★ from 62 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Greenfield
53/100CR ScoreRanked #17 because of its Google rating and trade focus: 3.7★ from 12 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sturtevant, 19 mi away
52/100CR ScoreRanked #18 because of its Google rating and review volume: 5.0★ from 174 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Milwaukee, 6 mi away
52/100CR ScoreRanked #19 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wauwatosa, 10 mi away
51/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.6★ from 22 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Oconomowoc, 22 mi away
51/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 27 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Germantown, 17 mi away
51/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.5★ from 74 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Muskego, 10 mi away
51/100CR ScoreRanked #23 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Somers, 23 mi away
51/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brown Deer, 16 mi away
50/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.0★ from 8 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
How we ranked Greenfield septic service companies
We scored 46 Greenfield 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 Greenfield 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 Greenfield: frequently asked questions
Who is the best septic service company in Greenfield?
By CR Score, the highest-ranked septic service company in Greenfield, WI is Guardian Well & Septic Inspections with a CR Score of 62/100. It has 5.0★ from 252 Google reviews. It is open Saturdays until 1 PM. Mr. Rooter Plumbing of Southeast WI (#2) and MGA Sewer, Water & Gas Plumbing Contractor 24hr Emergency Services Available 7 Days A Week (#3) follow. We ranked 46 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Greenfield?
ContractorsRanked ranks 46 septic service companies serving Greenfield, WI. 1 of them is based in Greenfield; the rest serve it from nearby towns. Counts are as of November 2026.
Which septic service companies in Greenfield are open 24/7?
13 ranked septic service companies in Greenfield post 24/7 hours. The highest-ranked are Mr. Rooter Plumbing of Southeast WI (#2), MGA Sewer, Water & Gas Plumbing Contractor 24hr Emergency Services Available 7 Days A Week (#3) and Econo Sewer & Drain (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Greenfield work on weekends?
19 of 46 ranked septic service companies post Saturday hours and 16 post Sunday hours. The highest-ranked open Saturdays are Guardian Well & Septic Inspections (#1), Mr. Rooter Plumbing of Southeast WI (#2) and MGA Sewer, Water & Gas Plumbing Contractor 24hr Emergency Services Available 7 Days A Week (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Greenfield septic service companies have?
The median Google rating among 46 rated septic service companies in Greenfield is 4.8★, with a median of 24 reviews. Rozga Plumbing Corp. has the most, 742 reviews, and ranks #9. 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 Greenfield count in this ranking?
Yes, if they are within 25 mi of the Greenfield 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 Greenfield
- November 2026: CR Scores recalculated for 46 septic service companies serving Greenfield.
More septic service companies and Greenfield pages
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