64/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 1,374 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in South Lyon, MI (2026)
83 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in South Lyon: Bolton Septic, CR Score 64/100; 4.9★ from 1,374 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): M & M Septic, posts 24/7 hours; ranked #2 of 83.
- 5
Most-reviewed: Burton's Plumbing & Heating, 2,211 Google reviews at 4.9★, the most of 83 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
83 South Lyon septic service companies are ranked here by CR Score, from ten published factors. 28 are open 24/7, 49 open Saturdays and 37 open Sundays, based on posted hours. The median Google rating is 4.7★ across 83 rated businesses.
Top 10 septic service companies in South Lyon at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Bolton Septic | 64 | 4.9★ (1,374) | Ann Arbor, 12 mi away | 24/7 | Overall |
| 2 | M & M Septic | 62 | 4.9★ (498) | Waterford, 15 mi away | 24/7 | Emergencies |
| 3 | Septic Pro | 61 | 5.0★ (177) | Waterford, 15 mi away | 24/7 | — |
| 4 | Cregger Plumbing, Heating, Cooling & Electrical | 61 | 4.9★ (206) | Farmington, 15 mi away | 24/7 | — |
| 5 | Burton's Plumbing & Heating | 58 | 4.9★ (2,211) | Wayne, 19 mi away | — | Most reviews |
| 6 | D & J Septic Services | 58 | 4.6★ (68) | South Lyon | Sat | — |
| 7 | Oakland Home Inspections LLC | 58 | 4.7★ (92) | Walled Lake, 11 mi away | Sat · Sun · Evenings | — |
| 8 | Anything Outdoors Septic & Excavating | 56 | 4.9★ (221) | Howell, 16 mi away | 24/7 | — |
| 9 | Sewer23™ - Plumbing, Sewer & Drain Cleaning | 56 | 5.0★ (151) | Farmington Hills, 16 mi away | 24/7 | — |
| 10 | Universal Plumbing And Sewer, Inc. | 56 | 4.9★ (378) | Auburn Hills, 21 mi away | 24/7 | — |
The 83 best septic service companies in South Lyon, 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 M & M Septic
Based in Waterford, 15 mi away
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 498 Google reviews, listed on Google as “Septic system service”.
#3 Septic Pro
Based in Waterford, 15 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 177 Google reviews, listed on Google as “Septic system service”.
Based in Farmington, 15 mi away
61/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 206 Google reviews, listed on Google as “Septic system service”.
Based in Wayne, 19 mi away
58/100CR ScoreRanked #5 because of its Google rating and review volume: 4.9★ from 2,211 Google reviews, the most in South Lyon.
Based in South Lyon
58/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.6★ from 68 Google reviews, listed on Google as “Septic system service”.
Based in Walled Lake, 11 mi away
58/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.7★ from 92 Google reviews, listed on Google as “Septic system service”.
Based in Howell, 16 mi away
56/100CR ScoreRanked #8 because of its Google rating and review volume: 4.9★ from 221 Google reviews.
Based in Farmington Hills, 16 mi away
56/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 151 Google reviews, listed on Google as “Plumber”.
Based in Auburn Hills, 21 mi away
56/100CR ScoreRanked #10 because of its Google rating and review volume: 4.9★ from 378 Google reviews.
Based in South Lyon
56/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.7★ from 60 Google reviews, listed on Google as “Septic system service”.
Based in Ypsilanti, 19 mi away
56/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 686 Google reviews, listed on Google as “Septic system service”.
Based in Northville, 4 mi away
56/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 47 Google reviews, listed on Google as “Septic system service”.
Based in Westland, 19 mi away
55/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 213 Google reviews, listed on Google as “Plumber”.
#15 Pelkey Services
Based in Waterford, 21 mi away
54/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Septic system service”.
Based in Milford, 18 mi away
54/100CR ScoreRanked #16 because of its Google rating and review volume: 4.7★ from 644 Google reviews.
Based in South Lyon
54/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.6★ from 13 Google reviews, listed on Google as “Plumber”.
Based in Fenton, 21 mi away
53/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Plumber”.
Based in Milford, 12 mi away
53/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 146 Google reviews, listed on Google as “Plumber”.
Based in Waterford, 19 mi away
53/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Septic system service”.
Based in Ann Arbor, 13 mi away
53/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Plumber”.
Based in Chelsea, 12 mi away
53/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.8★ from 130 Google reviews, listed on Google as “Plumber”.
Based in South Lyon
53/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Septic system service”.
Based in Livonia, 21 mi away
53/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Septic system service”.
Based in Ann Arbor, 10 mi away
52/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.4★ from 56 Google reviews, listed on Google as “Plumber”.
Septic service companies ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 83 ranked septic service companies here; the rest are on their profiles.
Also serving South Lyon
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 |
|---|---|---|
| 310 Group | 3.0★ (2) | 20 mi |
| Advanced Sewer and Drain Cleaning Co. | 4.0★ (1) | 23 mi |
| Al Pearson & Son | 5.0★ (1) | 18 mi |
| B & B Sewer Drain Cleaning | 3.0★ (1) | 18 mi |
| Blockbuster Sewer & Drain Cleaning | 23 mi | |
| Brendel Excavating Inc | 5.0★ (1) | 15 mi |
| Clemons Unlimited Sewer and hyro-jetting Cleaning | 24 mi | |
| Dun-Rite Plumbing & Sewer Services | 20 mi | |
| Flex Sanitation | 9 mi | |
| JKC Sewer, Drain & Plumbing Service | 5.0★ (1) | 16 mi |
| John's Plumbing, Inc of Milford | 5.0★ (2) | 8 mi |
| Main Drain Sewer & Repair | 25 mi | |
| Pride Plumbing & Electric Sewer | 5.0★ (2) | 16 mi |
| R. J. Lewis Services | 4.0★ (1) | 19 mi |
| Royal Flush Drain Cleaning and Sewer Repair LLC | 22 mi | |
| Stamper and Son Excavating | 18 mi | |
| Universal Septic Services of Brighton | 17 mi | |
| Universal Septic Services of Wayne County | 5.0★ (1) | 19 mi |
| Washtenaw County Septic Service | 25 mi |
How we ranked South Lyon septic service companies
We scored 83 South Lyon 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 South Lyon 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 South Lyon: frequently asked questions
Who is the best septic service company in South Lyon?
By CR Score, the highest-ranked septic service company in South Lyon, MI is Bolton Septic with a CR Score of 64/100. It has 4.9★ from 1,374 Google reviews. It is open 24/7. M & M Septic (#2) and Septic Pro (#3) follow. We ranked 83 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in South Lyon?
ContractorsRanked ranks 83 septic service companies serving South Lyon, MI. 4 of them are based in South Lyon; 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 South Lyon are open 24/7?
28 ranked septic service companies in South Lyon post 24/7 hours. The highest-ranked are Bolton Septic (#1), M & M Septic (#2) and Septic Pro (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in South Lyon work on weekends?
49 of 83 ranked septic service companies post Saturday hours and 37 post Sunday hours. The highest-ranked open Saturdays are Bolton Septic (#1), M & M Septic (#2) and Septic Pro (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do South Lyon septic service companies have?
The median Google rating among 83 rated septic service companies in South Lyon is 4.7★, with a median of 36 reviews. Burton's Plumbing & Heating has the most, 2,211 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 South Lyon count in this ranking?
Yes, if they are within 25 mi of the South Lyon 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 South Lyon
- November 2026: CR Scores recalculated for 83 septic service companies serving South Lyon.
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