62/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 498 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Clawson, MI (2026)
116 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Clawson: M & M Septic, CR Score 62/100; 4.9★ from 498 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Harvey and Sons Septic Service, posts 24/7 hours; ranked #2 of 116.
- 3
Most-reviewed: Universal Plumbing and Sewer, 2,503 Google reviews at 4.9★, the most of 116 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
116 Clawson septic service companies are ranked here by CR Score, from ten published factors. 45 are open 24/7, 70 open Saturdays and 56 open Sundays, based on posted hours. The median Google rating is 4.7★ across 116 rated businesses.
Most of this list also appears on the Septic service companies in Troy ranking. See Septic service companies in Troy
Top 10 septic service companies in Clawson at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | M & M Septic | 62 | 4.9★ (498) | Waterford, 16 mi away | 24/7 | Overall |
| 2 | Harvey and Sons Septic Service | 61 | 4.8★ (137) | Sterling Heights, 7 mi away | 24/7 | Emergencies |
| 3 | Universal Plumbing and Sewer | 61 | 4.9★ (2,503) | Clinton Township, 13 mi away | 24/7 | Most reviews |
| 4 | Cregger Plumbing, Heating, Cooling & Electrical | 61 | 4.9★ (206) | Farmington, 12 mi away | 24/7 | — |
| 5 | H2O Plumbing and Sewer | 59 | 4.9★ (390) | Fraser, 11 mi away | 24/7 | — |
| 6 | Septic Pro | 59 | 5.0★ (177) | Waterford, 22 mi away | 24/7 | — |
| 7 | H2O Plumbing, Sewer and Drain | 59 | 4.9★ (292) | Warren, 9 mi away | 24/7 | — |
| 8 | Sewer23™ - Plumbing, Sewer & Drain Cleaning | 58 | 5.0★ (151) | Farmington Hills, 10 mi away | 24/7 | — |
| 9 | Burton's Plumbing & Heating | 58 | 4.9★ (2,211) | Wayne, 21 mi away | — | — |
| 10 | Universal Plumbing And Sewer, Inc. | 57 | 4.9★ (378) | Auburn Hills, 15 mi away | 24/7 | — |
The 116 best septic service companies in Clawson, 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.
Based in Sterling Heights, 7 mi away
61/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.8★ from 137 Google reviews, listed on Google as “Septic system service”.
Based in Clinton Township, 13 mi away
61/100CR ScoreRanked #3 because of its Google rating and review volume: 4.9★ from 2,503 Google reviews, the most in Clawson.
Based in Farmington, 12 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 Fraser, 11 mi away
59/100CR ScoreRanked #5 because of its Google rating and review volume: 4.9★ from 390 Google reviews.
#6 Septic Pro
Based in Waterford, 22 mi away
59/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 177 Google reviews, listed on Google as “Septic system service”.
Based in Warren, 9 mi away
59/100CR ScoreRanked #7 because of its Google rating and review volume: 4.9★ from 292 Google reviews.
Based in Farmington Hills, 10 mi away
58/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 151 Google reviews, listed on Google as “Plumber”.
Based in Wayne, 21 mi away
58/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 2,211 Google reviews, listed on Google as “Septic system service”.
Based in Auburn Hills, 15 mi away
57/100CR ScoreRanked #10 because of its Google rating and review volume: 4.9★ from 378 Google reviews.
Based in Royal Oak, 3 mi away
57/100CR ScoreRanked #11 because of its Google rating and review volume: 4.8★ from 1,624 Google reviews.
Based in Royal Oak, 2 mi away
57/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 44 Google reviews, listed on Google as “Drainage service”.
Based in Dearborn, 9 mi away
57/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.7★ from 188 Google reviews, listed on Google as “Plumber”.
Based in Walled Lake, 16 mi away
56/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.7★ from 92 Google reviews, listed on Google as “Septic system service”.
Based in Dearborn, 10 mi away
56/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 48 Google reviews, listed on Google as “Plumber”.
Based in Waterford, 11 mi away
55/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.4★ from 40 Google reviews, listed on Google as “Septic system service”.
Based in Fenton, 14 mi away
55/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Plumber”.
#18 Michigan Waste
Based in Waterford, 14 mi away
55/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.1★ from 11 Google reviews, listed on Google as “Septic system service”.
Based in Auburn Hills, 12 mi away
54/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.5★ from 99 Google reviews, listed on Google as “Plumber”.
Based in Westland, 20 mi away
54/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 213 Google reviews, listed on Google as “Plumber”.
Based in Clinton Township, 13 mi away
54/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.4★ from 26 Google reviews, listed on Google as “Septic system service”.
Based in Milford, 17 mi away
54/100CR ScoreRanked #22 because of its Google rating and review volume: 4.7★ from 644 Google reviews.
Based in Waterford, 15 mi away
54/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Septic system service”.
Based in Warren, 9 mi away
54/100CR ScoreRanked #24 because of its Google rating and review volume: 4.6★ from 195 Google reviews.
Based in Ferndale, 6 mi away
54/100CR ScoreRanked #25 because of its Google rating and review volume: 4.7★ from 2,193 Google reviews.
How we ranked Clawson septic service companies
We scored 116 Clawson 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 Clawson 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 Clawson: frequently asked questions
Who is the best septic service company in Clawson?
By CR Score, the highest-ranked septic service company in Clawson, MI is M & M Septic with a CR Score of 62/100. It has 4.9★ from 498 Google reviews. It is open 24/7. Harvey and Sons Septic Service (#2) and Universal Plumbing and Sewer (#3) follow. We ranked 116 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Clawson?
ContractorsRanked ranks 116 septic service companies serving Clawson, MI. Counts are as of November 2026.
Which septic service companies in Clawson are open 24/7?
45 ranked septic service companies in Clawson post 24/7 hours. The highest-ranked are M & M Septic (#1), Harvey and Sons Septic Service (#2) and Universal Plumbing and Sewer (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Clawson work on weekends?
70 of 116 ranked septic service companies post Saturday hours and 56 post Sunday hours. The highest-ranked open Saturdays are M & M Septic (#1), Harvey and Sons Septic Service (#2) and Universal Plumbing and Sewer (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Clawson septic service companies have?
The median Google rating among 116 rated septic service companies in Clawson is 4.7★, with a median of 35 reviews. Universal Plumbing and Sewer has the most, 2,503 reviews, and ranks #3. 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 Clawson count in this ranking?
Yes, if they are within 25 mi of the Clawson 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 Clawson
- November 2026: CR Scores recalculated for 116 septic service companies serving Clawson.
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