61/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 167 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 Owosso, MI (2026)
14 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Owosso: KT Septic Evaluation LLC, CR Score 61/100; 4.9★ from 167 Google reviews; open 7 days a week.
- 2
Best for emergencies (open 24/7): American Sewer Cleaners, posts 24/7 hours; ranked #2 of 14.
- 6
Most-reviewed: Mr. Rooter Plumbing of Greater Lansing Area, 640 Google reviews at 4.8★, the most of 14 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
14 Owosso septic service companies are ranked here by CR Score, from ten published factors. 7 are open 24/7, 9 open Saturdays and 8 open Sundays, based on posted hours. The median Google rating is 4.8★ across 14 rated businesses.
Top 10 septic service companies in Owosso at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | KT Septic Evaluation LLC | 61 | 4.9★ (167) | Waterford, 11 mi away | Sat · Sun · Evenings | Overall |
| 2 | American Sewer Cleaners | 59 | 4.4★ (456) | Burton, 22 mi away | 24/7 | Emergencies |
| 3 | Kincaid Septic Services and Porta Potty Rentals | 59 | 4.9★ (45) | Swartz Creek, 16 mi away | 24/7 | — |
| 4 | Don's Septic Tank Cleaning | 58 | 4.7★ (63) | Flushing, 18 mi away | 24/7 | — |
| 5 | G A Hunt Excavating and Septic Services | 57 | 4.3★ (72) | Saint Johns, 19 mi away | 24/7 | — |
| 6 | Mr. Rooter Plumbing of Greater Lansing Area | 56 | 4.8★ (640) | Saint Johns, 20 mi away | 24/7 | Most reviews |
| 7 | Rooter Guy Drain Cleaning | 55 | 5.0★ (319) | East Lansing, 25 mi away | 24/7 | — |
| 8 | KD's Septic Services | Septic Pump | Septic Cleanout, Grease Trap | 55 | 5.0★ (13) | Flint, 22 mi away | 24/7 | — |
| 9 | Sloan's Septic Tank Service | 53 | 4.7★ (49) | Lansing, 16 mi away | — | — |
| 10 | 4M's Septic & Sewer | 53 | 5.0★ (75) | Flint, 24 mi away | — | — |
The 14 best septic service companies in Owosso, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Burton, 22 mi away
59/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.4★ from 456 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Swartz Creek, 16 mi away
59/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 45 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Flushing, 18 mi away
58/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.7★ from 63 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Johns, 19 mi away
57/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.3★ from 72 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Johns, 20 mi away
56/100CR ScoreRanked #6 because of its Google rating and review volume: 4.8★ from 640 Google reviews, the most in Owosso.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Lansing, 25 mi away
55/100CR ScoreRanked #7 because of its Google rating and review volume: 5.0★ from 319 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Flint, 22 mi away
55/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ 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 Lansing, 16 mi away
53/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.7★ from 49 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Flint, 24 mi away
53/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 75 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Flushing, 18 mi away
50/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.3★ from 6 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Lansing, 22 mi away
48/100CR ScoreRanked #12 because of its Google rating and review volume: 4.7★ from 263 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lake Fenton, 25 mi away
47/100CR ScoreRanked #13 because of its Google rating and review volume: 4.8★ from 60 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Johns, 19 mi away
46/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.0★ from 8 Google reviews, listed on Google as “Excavating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Also serving Owosso
12 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 |
|---|---|---|
| Affordable Plumbing Sewer Co | 5.0★ (1) | 24 mi |
| Alert Sewer Co | 5.0★ (1) | 25 mi |
| C&C Outdoor Services | 5.0★ (2) | 24 mi |
| Diem Septic Tank Installers | 5.0★ (1) | 24 mi |
| Durfee Sewer and Drain Service | In Owosso | |
| Ellis Sewer & Drains | 21 mi | |
| Hall's Sewer Services | In Owosso | |
| Jerry Hall Septic Services | 5.0★ (1) | 25 mi |
| legacy inc | 1.0★ (1) | 24 mi |
| S.D. Plumbing | 5.0★ (9) | In Owosso |
| Sewer-Man | 24 mi | |
| Universal Septic Services of Genesee County | 25 mi |
How we ranked Owosso septic service companies
We scored 14 Owosso 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 Owosso 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 Owosso: frequently asked questions
Who is the best septic service company in Owosso?
By CR Score, the highest-ranked septic service company in Owosso, MI is KT Septic Evaluation LLC with a CR Score of 61/100. It has 4.9★ from 167 Google reviews. It is open 7 days a week. American Sewer Cleaners (#2) and Kincaid Septic Services and Porta Potty Rentals (#3) follow. We ranked 14 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Owosso?
ContractorsRanked ranks 14 septic service companies serving Owosso, MI. Another 12 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Owosso are open 24/7?
7 ranked septic service companies in Owosso post 24/7 hours. The highest-ranked are American Sewer Cleaners (#2), Kincaid Septic Services and Porta Potty Rentals (#3) and Don's Septic Tank Cleaning (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Owosso work on weekends?
9 of 14 ranked septic service companies post Saturday hours and 8 post Sunday hours. The highest-ranked open Saturdays are KT Septic Evaluation LLC (#1), American Sewer Cleaners (#2) and Kincaid Septic Services and Porta Potty Rentals (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Owosso septic service companies have?
The median Google rating among 14 rated septic service companies in Owosso is 4.8★, with a median of 68 reviews. Mr. Rooter Plumbing of Greater Lansing Area has the most, 640 reviews, and ranks #6. 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 Owosso count in this ranking?
Yes, if they are within 25 mi of the Owosso 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 Owosso
- November 2026: CR Scores recalculated for 14 septic service companies serving Owosso.
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