61/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.6★ from 244 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Oswego, IL (2026)
106 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Oswego: Ability Septic, CR Score 61/100; 4.6★ from 244 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Journeymen Plumbing and Sewer LLC, posts 24/7 hours; ranked #2 of 106.
- 5
Most-reviewed: ABC Plumbing, Sewer, Heating, Cooling & Electric, 1,107 Google reviews at 4.8★, the most of 106 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
106 Oswego septic service companies are ranked here by CR Score, from ten published factors. 57 are open 24/7, 71 open Saturdays and 59 open Sundays, based on posted hours. The median Google rating is 4.8★ across 106 rated businesses.
Top 10 septic service companies in Oswego at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Ability Septic | 61 | 4.6★ (244) | Batavia, 13 mi away | 24/7 | Overall |
| 2 | Journeymen Plumbing and Sewer LLC | 59 | 5.0★ (278) | Warrenville, 13 mi away | 24/7 | Emergencies |
| 3 | Pro Services Plumbing, Drains, Sewer Lining | 59 | 5.0★ (172) | North Aurora, 9 mi away | 24/7 | — |
| 4 | J. Blanton Plumbing, Sewer & Drain | 59 | 4.8★ (413) | Naperville, 12 mi away | 24/7 | — |
| 5 | ABC Plumbing, Sewer, Heating, Cooling & Electric | 59 | 4.8★ (1,107) | Downers Grove, 20 mi away | 24/7 | Most reviews |
| 6 | Tony's Drain & Sewer Cleaning | 59 | 4.8★ (149) | Aurora, 5 mi away | 24/7 | — |
| 7 | Sewer Sharks | 59 | 5.0★ (49) | Oswego | 24/7 | — |
| 8 | RootBusters Plumbing, Sewer and Drains Inc. | 58 | 4.9★ (306) | Bolingbrook, 15 mi away | 24/7 | — |
| 9 | Aurora Sewer Cleaning Corp | 58 | 5.0★ (75) | Yorkville, 6 mi away | 24/7 | — |
| 10 | Bee Quick Plumbing & Sewer - Naperville | 58 | 5.0★ (156) | Naperville, 13 mi away | 24/7 | — |
The 106 best septic service companies in Oswego, 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 Warrenville, 13 mi away
59/100CR ScoreRanked #2 because of its Google rating and review volume: 5.0★ from 278 Google reviews.
Based in North Aurora, 9 mi away
59/100CR ScoreRanked #3 because of its Google rating and review volume: 5.0★ from 172 Google reviews.
Based in Naperville, 12 mi away
59/100CR ScoreRanked #4 because of its Google rating and review volume: 4.8★ from 413 Google reviews.
Based in Downers Grove, 20 mi away
59/100CR ScoreRanked #5 because of its Google rating and review volume: 4.8★ from 1,107 Google reviews, the most in Oswego.
Based in Aurora, 5 mi away
59/100CR ScoreRanked #6 because of its Google rating and review volume: 4.8★ from 149 Google reviews.
#7 Sewer Sharks
Based in Oswego
59/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 49 Google reviews, listed on Google as “Plumber”.
Based in Bolingbrook, 15 mi away
58/100CR ScoreRanked #8 because of its Google rating and review volume: 4.9★ from 306 Google reviews.
Based in Yorkville, 6 mi away
58/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 75 Google reviews, listed on Google as “Plumber”.
Based in Naperville, 13 mi away
58/100CR ScoreRanked #10 because of its Google rating and review volume: 5.0★ from 156 Google reviews.
Based in Joliet, 17 mi away
58/100CR ScoreRanked #11 because of its Google rating and review volume: 4.9★ from 321 Google reviews.
Based in Chicago Ridge, 21 mi away
58/100CR ScoreRanked #12 because of its Google rating and review volume: 5.0★ from 375 Google reviews.
Based in Aurora, 5 mi away
57/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Plumber”.
Based in Shorewood, 12 mi away
57/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 159 Google reviews, listed on Google as “Septic system service”.
#15 Tritan Plumbing
Based in Plainfield, 6 mi away
56/100CR ScoreRanked #15 because of its Google rating and review volume: 4.5★ from 411 Google reviews.
Based in Clarendon Hills, 18 mi away
56/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 126 Google reviews, listed on Google as “Plumber”.
Based in Downers Grove, 18 mi away
56/100CR ScoreRanked #17 because of its Google rating and review volume: 4.7★ from 265 Google reviews.
Based in Naperville, 10 mi away
56/100CR ScoreRanked #18 because of its Google rating and review volume: 5.0★ from 145 Google reviews.
Based in Addison, 24 mi away
56/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.8★ from 51 Google reviews, listed on Google as “Septic system service”.
Based in Hinsdale, 24 mi away
56/100CR ScoreRanked #20 because of its Google rating and review volume: 4.9★ from 270 Google reviews.
Based in Geneva, 14 mi away
56/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.7★ from 114 Google reviews, listed on Google as “Plumber”.
Based in Frankfort, 25 mi away
55/100CR ScoreRanked #22 because of its Google rating and review volume: 5.0★ from 173 Google reviews.
Based in Crestwood, 22 mi away
55/100CR ScoreRanked #23 because of its Google rating and review volume: 4.9★ from 136 Google reviews.
Based in Bolingbrook, 12 mi away
55/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 90 Google reviews, listed on Google as “Plumber”.
Based in Montgomery, 4 mi away
55/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.1★ from 23 Google reviews, listed on Google as “Septic system service”.
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 106 ranked septic service companies here; the rest are on their profiles.
Also serving Oswego
20 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 |
|---|---|---|
| B & E Sewer & Water Inc | 3.0★ (2) | 16 mi |
| Bisping Construction | 3.0★ (2) | 24 mi |
| Carl's Septic Services Inc | 5.0★ (1) | 18 mi |
| Drain 911 Plumbing and Sewer Rodding | 3.0★ (2) | 24 mi |
| Ebert Family Sewer and Drain Inc. | 5.0★ (2) | 25 mi |
| Guenther Plumbing & Sewer Service | 5.0★ (1) | 25 mi |
| H & R Sewer & Water Construction Inc | 5.0★ (1) | 19 mi |
| H.D. Backhoe Service | 5.0★ (1) | 6 mi |
| Illinois American Plumbing and Sewer LLC | 5.0★ (1) | 22 mi |
| JAM Plumbing & Sewers | 5.0★ (1) | 19 mi |
| McCoy Sewers Inc. | 5.0★ (2) | 20 mi |
| Mister J Sewer and Drain | 8 mi | |
| NozzTeq, Inc | 10 mi | |
| PrairieStar.org SepticTank | 12 mi | |
| Simply Sewers & Water | 5.0★ (2) | 22 mi |
| Soukup's Plumbing & Sewer Services | 13 mi | |
| The Home Depot | 4.2★ (958) | In Oswego |
| Two Tuff Tony's Plumbing and Sewer | 13 mi | |
| United Site Services | 1.0★ (2) | 14 mi |
| whiteSeptic | 5.0★ (1) | 7 mi |
How we ranked Oswego septic service companies
We scored 106 Oswego 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 Oswego 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 Oswego: frequently asked questions
Who is the best septic service company in Oswego?
By CR Score, the highest-ranked septic service company in Oswego, IL is Ability Septic with a CR Score of 61/100. It has 4.6★ from 244 Google reviews. It is open 24/7. Journeymen Plumbing and Sewer LLC (#2) and Pro Services Plumbing, Drains, Sewer Lining (#3) follow. We ranked 106 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Oswego?
ContractorsRanked ranks 106 septic service companies serving Oswego, IL. 2 of them are based in Oswego; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Oswego are open 24/7?
57 ranked septic service companies in Oswego post 24/7 hours. The highest-ranked are Ability Septic (#1), Journeymen Plumbing and Sewer LLC (#2) and Pro Services Plumbing, Drains, Sewer Lining (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Oswego work on weekends?
71 of 106 ranked septic service companies post Saturday hours and 59 post Sunday hours. The highest-ranked open Saturdays are Ability Septic (#1), Journeymen Plumbing and Sewer LLC (#2) and Pro Services Plumbing, Drains, Sewer Lining (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Oswego septic service companies have?
The median Google rating among 106 rated septic service companies in Oswego is 4.8★, with a median of 37 reviews. ABC Plumbing, Sewer, Heating, Cooling & Electric has the most, 1,107 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 Oswego count in this ranking?
Yes, if they are within 25 mi of the Oswego 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 Oswego
- November 2026: CR Scores recalculated for 106 septic service companies serving Oswego.
More septic service companies and Oswego pages
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