62/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 1,423 Google reviews, the most in Markham.
Best Septic Service Companies in Markham, IL (2026)
189 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Markham: Kevin Szabo Jr Plumbing and Sewer, CR Score 62/100; 4.9★ from 1,423 Google reviews; open 7 days a week.
- 2
Best for emergencies (open 24/7): B & D Plumbing And Sewer Service, Inc., posts 24/7 hours; ranked #2 of 189.
- 8
Most-reviewed: ABC Plumbing, Sewer, Heating, Cooling & Electric, 1,107 Google reviews at 4.8★, the most of 189 ranked after Kevin Szabo Jr Plumbing and Sewer; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
189 Markham septic service companies are ranked here by CR Score, from ten published factors. 113 are open 24/7, 145 open Saturdays and 116 open Sundays, based on posted hours. The median Google rating is 4.7★ across 189 rated businesses.
Top 10 septic service companies in Markham at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Kevin Szabo Jr Plumbing and Sewer | 62 | 4.9★ (1,423) | Tinley Park, 4 mi away | Sat · Sun · Evenings | Overall |
| 2 | B & D Plumbing And Sewer Service, Inc. | 61 | 5.0★ (232) | Frankfort, 1 mi away | 24/7 | Emergencies |
| 3 | Affordable Sewer And Plumbing | 61 | 5.0★ (180) | Country Club Hills, 1 mi away | 24/7 | — |
| 4 | FreeFlow Environmental of Cook County | 60 | 4.9★ (32) | Tinley Park, 5 mi away | 24/7 | — |
| 5 | Brilliant Plumbers: Sewage, Sump Pumps And Sewer | 59 | 5.0★ (375) | Chicago Ridge, 16 mi away | 24/7 | — |
| 6 | J. Blanton Plumbing, Sewer & Drain | 58 | 4.8★ (157) | Tinley Park, 7 mi away | 24/7 | — |
| 7 | J. Blanton Plumbing, Sewer & Drain | 58 | 4.8★ (174) | Mokena, 8 mi away | 24/7 | — |
| 8 | ABC Plumbing, Sewer, Heating, Cooling & Electric | 58 | 4.8★ (1,107) | Downers Grove, 22 mi away | 24/7 | Most reviews |
| 9 | Neighborhood Rooter Express \ Plumbing and Sewer Experts | 58 | 5.0★ (173) | Frankfort, 13 mi away | 24/7 | — |
| 10 | USA Plumbing & Sewer | 58 | 4.4★ (420) | Countryside, 6 mi away | 24/7 | — |
The 189 best septic service companies in Markham, 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 Frankfort, 1 mi away
61/100CR ScoreRanked #2 because of its Google rating and review volume: 5.0★ from 232 Google reviews.
Based in Country Club Hills, 1 mi away
61/100CR ScoreRanked #3 because of its Google rating and review volume: 5.0★ from 180 Google reviews.
Based in Tinley Park, 5 mi away
60/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 32 Google reviews, listed on Google as “Septic system service”.
Based in Chicago Ridge, 16 mi away
59/100CR ScoreRanked #5 because of its Google rating and review volume: 5.0★ from 375 Google reviews.
Based in Tinley Park, 7 mi away
58/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 157 Google reviews, listed on Google as “Plumber”.
Based in Mokena, 8 mi away
58/100CR ScoreRanked #7 because of its Google rating and review volume: 4.8★ from 174 Google reviews.
Based in Downers Grove, 22 mi away
58/100CR ScoreRanked #8 because of its Google rating and review volume: 4.8★ from 1,107 Google reviews.
Based in Frankfort, 13 mi away
58/100CR ScoreRanked #9 because of its Google rating and review volume: 5.0★ from 173 Google reviews.
Based in Countryside, 6 mi away
58/100CR ScoreRanked #10 because of its Google rating and review volume: 4.4★ from 420 Google reviews.
Based in Glenwood, 5 mi away
58/100CR ScoreRanked #11 because of its Google rating and review volume: 4.6★ from 166 Google reviews.
Based in Oak Forest, 3 mi away
58/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 58 Google reviews, listed on Google as “Plumber”.
Based in Brookfield, 17 mi away
58/100CR ScoreRanked #13 because of its Google rating and review volume: 4.9★ from 327 Google reviews.
Based in South Holland, 4 mi away
57/100CR ScoreRanked #14 because of its Google rating and review volume: 4.9★ from 269 Google reviews.
Based in Chicago Ridge, 8 mi away
57/100CR ScoreRanked #15 because of its Google rating and review volume: 4.6★ from 172 Google reviews.
Based in Cicero, 9 mi away
57/100CR ScoreRanked #16 because of its Google rating and review volume: 5.0★ from 384 Google reviews.
Based in Bridgeview, 11 mi away
57/100CR ScoreRanked #17 because of its Google rating and review volume: 4.7★ from 175 Google reviews.
Based in Frankfort, 11 mi away
57/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.7★ from 155 Google reviews, listed on Google as “Plumber”.
Based in Hinsdale, 20 mi away
57/100CR ScoreRanked #19 because of its Google rating and review volume: 4.9★ from 270 Google reviews.
Based in Joliet, 21 mi away
57/100CR ScoreRanked #20 because of its Google rating and review volume: 4.9★ from 321 Google reviews.
Based in Bolingbrook, 21 mi away
56/100CR ScoreRanked #21 because of its Google rating and review volume: 4.9★ from 306 Google reviews.
Based in Crestwood, 15 mi away
56/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 136 Google reviews, listed on Google as “Plumber”.
Based in Lyons, 17 mi away
56/100CR ScoreRanked #23 because of its Google rating and review volume: 4.7★ from 282 Google reviews.
Based in Alsip, 5 mi away
56/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.6★ from 62 Google reviews, listed on Google as “Plumber”.
Based in Lyons, 17 mi away
56/100CR ScoreRanked #25 because of its Google rating and review volume: 4.7★ from 255 Google reviews.
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 189 ranked septic service companies here; the rest are on their profiles.
Also serving Markham
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 |
|---|---|---|
| A Plumbing & Sewer | 1.0★ (2) | 23 mi |
| A. Metz, Sewer Inc. | 5.0★ (2) | 19 mi |
| A&S SEWER AND DRAIN SERVICES | 5.0★ (2) | 23 mi |
| B&D Sewer. Underground Construction. | 1.0★ (1) | 14 mi |
| Bisping Construction | 3.0★ (2) | 16 mi |
| D & B Sewer & Drain Services & Plumbing | 5.0★ (1) | 15 mi |
| Erris Sewer and Plumbing | 5.0★ (2) | 7 mi |
| H & R Sewer & Water Construction Inc | 5.0★ (1) | 16 mi |
| Karl Meyer Expert Plumbing | 5.0★ (1) | 6 mi |
| McCoy Sewers Inc. | 5.0★ (2) | 18 mi |
| Midwest Hydro Jetting And Sewer Service | 5.0★ (1) | 15 mi |
| MJ's Plumbing and Sewer | 5.0★ (2) | 5 mi |
| Neighborhood Rooter Express \ Plumbing and Sewer Experts | 5.0★ (1) | 13 mi |
| Neptune Sewer Services Sludge | 5.0★ (1) | 17 mi |
| O'Brien Family Sewer and Plumbing Services | 5.0★ (1) | 5 mi |
| root-x sewer and drain and home repair | 4.0★ (2) | 13 mi |
| Roots Plumbing and Sewer Contractors | 5.0★ (2) | 11 mi |
| Simply Sewers & Water | 5.0★ (2) | 15 mi |
| Stay Dry Sewers | 5.0★ (2) | 19 mi |
| Visu-Sewer of Illinois, LLC | 5.0★ (2) | 11 mi |
How we ranked Markham septic service companies
We scored 189 Markham 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 Markham 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 Markham: frequently asked questions
Who is the best septic service company in Markham?
By CR Score, the highest-ranked septic service company in Markham, IL is Kevin Szabo Jr Plumbing and Sewer with a CR Score of 62/100. It has 4.9★ from 1,423 Google reviews. It is open 7 days a week. B & D Plumbing And Sewer Service, Inc. (#2) and Affordable Sewer And Plumbing (#3) follow. We ranked 189 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Markham?
ContractorsRanked ranks 189 septic service companies serving Markham, IL. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Markham are open 24/7?
113 ranked septic service companies in Markham post 24/7 hours. The highest-ranked are B & D Plumbing And Sewer Service, Inc. (#2), Affordable Sewer And Plumbing (#3) and FreeFlow Environmental of Cook County (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Markham work on weekends?
145 of 189 ranked septic service companies post Saturday hours and 116 post Sunday hours. The highest-ranked open Saturdays are Kevin Szabo Jr Plumbing and Sewer (#1), B & D Plumbing And Sewer Service, Inc. (#2) and Affordable Sewer And Plumbing (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Markham septic service companies have?
The median Google rating among 189 rated septic service companies in Markham is 4.7★, with a median of 31 reviews. Kevin Szabo Jr Plumbing and Sewer has the most, 1,423 reviews, and ranks #1. 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 Markham count in this ranking?
Yes, if they are within 25 mi of the Markham 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 Markham
- November 2026: CR Scores recalculated for 189 septic service companies serving Markham.
- November 2026: 1 duplicate listing merged.
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