59/100CR 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 Germantown, WI (2026)
42 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Germantown: Guardian Well & Septic Inspections, CR Score 59/100; 5.0★ from 252 Google reviews; open Saturdays until 1 PM.
- 2
Best for emergencies (open 24/7): MGA Sewer, Water & Gas Plumbing Contractor 24hr Emergency Services Available 7 Days A Week, posts 24/7 hours; ranked #2 of 42.
- 21
Most-reviewed: Rozga Plumbing Corp., 742 Google reviews at 4.8★, the most of 42 ranked; ranked #21.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
42 Germantown septic service companies are ranked here by CR Score, from ten published factors. 11 are open 24/7, 17 open Saturdays and 13 open Sundays, based on posted hours. The median Google rating is 4.8★ across 42 rated businesses.
Most of this list also appears on the Septic service companies in Menomonee Falls ranking. See Septic service companies in Menomonee Falls
Top 10 septic service companies in Germantown at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Guardian Well & Septic Inspections | 59 | 5.0★ (252) | New Berlin, 18 mi away | Sat | Overall |
| 2 | MGA Sewer, Water & Gas Plumbing Contractor 24hr Emergency Services Available 7 Days A Week | 58 | 4.8★ (91) | Milwaukee, 8 mi away | 24/7 | Emergencies |
| 3 | Kons Septic Services Inc | 58 | 4.8★ (62) | Germantown | — | — |
| 4 | Rural Sanitation, Inc. | 58 | 4.9★ (153) | Slinger, 9 mi away | — | — |
| 5 | Albiero Plumbing & HVAC | 57 | 4.8★ (721) | West Bend, 15 mi away | 24/7 | — |
| 6 | Mr. Rooter Plumbing of Southeast WI | 57 | 4.6★ (625) | Brookfield, 11 mi away | 24/7 | — |
| 7 | Todd Kons Trenching, Inc. | 57 | 4.7★ (13) | Germantown | — | — |
| 8 | Arnold's Sanitation Technologies, LTD. | 56 | 5.0★ (114) | West Bend, 14 mi away | — | — |
| 9 | C&C Pumps | 56 | 5.0★ (149) | Hartford, 13 mi away | 24/7 | — |
| 10 | Aero-Stream LLC | 56 | 4.8★ (108) | Hartland, 13 mi away | — | — |
The 42 best septic service companies in Germantown, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Milwaukee, 8 mi away
58/100CR ScoreRanked #2 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 Germantown
58/100CR ScoreRanked #3 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 Slinger, 9 mi away
58/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 153 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in West Bend, 15 mi away
57/100CR ScoreRanked #5 because of its Google rating and review volume: 4.8★ from 721 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brookfield, 11 mi away
57/100CR ScoreRanked #6 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 Germantown
57/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.7★ from 13 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in West Bend, 14 mi away
56/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 114 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#9 C&C Pumps
Based in Hartford, 13 mi away
56/100CR ScoreRanked #9 because of its Google rating and review volume: 5.0★ from 149 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
#10 Aero-Stream LLC
Based in Hartland, 13 mi away
56/100CR ScoreRanked #10 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
55/100CR ScoreRanked #11 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.
#12 Sewer Ninjas
Based in Brookfield, 10 mi away
55/100CR ScoreRanked #12 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 West Bend, 5 mi away
54/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 18 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.
Based in Slinger, 12 mi away
54/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 41 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wauwatosa, 14 mi away
53/100CR ScoreRanked #16 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 Richfield, 7 mi away
53/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brown Deer, 5 mi away
53/100CR ScoreRanked #18 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.
Based in Jackson, 6 mi away
53/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.7★ from 13 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waukesha, 21 mi away
53/100CR ScoreRanked #20 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.
Based in West Allis, 15 mi away
53/100CR ScoreRanked #21 because of its Google rating and review volume: 4.8★ from 742 Google reviews, the most in Germantown.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Oconomowoc, 17 mi away
52/100CR ScoreRanked #22 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 Caledonia, 22 mi away
52/100CR ScoreRanked #23 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 Hartland, 15 mi away
52/100CR ScoreRanked #24 because of its Google rating and review volume: 4.8★ from 33 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
#25 Lietzau Inc
Based in Sussex, 5 mi away
51/100CR ScoreRanked #25 because of its Google rating and trade focus: 3.7★ from 6 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
How we ranked Germantown septic service companies
We scored 42 Germantown 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 Germantown 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 Germantown: frequently asked questions
Who is the best septic service company in Germantown?
By CR Score, the highest-ranked septic service company in Germantown, WI is Guardian Well & Septic Inspections with a CR Score of 59/100. It has 5.0★ from 252 Google reviews. It is open Saturdays until 1 PM. MGA Sewer, Water & Gas Plumbing Contractor 24hr Emergency Services Available 7 Days A Week (#2) and Kons Septic Services Inc (#3) follow. We ranked 42 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Germantown?
ContractorsRanked ranks 42 septic service companies serving Germantown, WI. 3 of them are based in Germantown; the rest serve it from nearby towns. Counts are as of November 2026.
Which septic service companies in Germantown are open 24/7?
11 ranked septic service companies in Germantown post 24/7 hours. The highest-ranked are MGA Sewer, Water & Gas Plumbing Contractor 24hr Emergency Services Available 7 Days A Week (#2), Albiero Plumbing & HVAC (#5) and Mr. Rooter Plumbing of Southeast WI (#6). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Germantown work on weekends?
17 of 42 ranked septic service companies post Saturday hours and 13 post Sunday hours. The highest-ranked open Saturdays are Guardian Well & Septic Inspections (#1), MGA Sewer, Water & Gas Plumbing Contractor 24hr Emergency Services Available 7 Days A Week (#2) and Albiero Plumbing & HVAC (#5). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Germantown septic service companies have?
The median Google rating among 42 rated septic service companies in Germantown is 4.8★, with a median of 27 reviews. Rozga Plumbing Corp. has the most, 742 reviews, and ranks #21. 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 Germantown count in this ranking?
Yes, if they are within 25 mi of the Germantown 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 Germantown
- November 2026: CR Scores recalculated for 42 septic service companies serving Germantown.
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