58/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 13 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Merrillville, IN (2026)
62 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Merrillville: FreeFlow Environmental, CR Score 58/100; 4.9★ from 13 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Ground Improvement Services, posts 24/7 hours; ranked #2 of 62.
- 4
Most-reviewed: Kevin Szabo Jr Plumbing and Sewer, 1,423 Google reviews at 4.9★, the most of 62 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
62 Merrillville septic service companies are ranked here by CR Score, from ten published factors. 21 are open 24/7, 38 open Saturdays and 28 open Sundays, based on posted hours. The median Google rating is 4.6★ across 62 rated businesses.
Top 10 septic service companies in Merrillville at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | FreeFlow Environmental | 58 | 4.9★ (13) | Crown Point, 5 mi away | 24/7 | Overall |
| 2 | Ground Improvement Services | 58 | 4.6★ (53) | Valparaiso, 12 mi away | 24/7 | Emergencies |
| 3 | Beebe's Excavation & Septic Service LLC | 57 | 4.8★ (74) | Merrillville | — | — |
| 4 | Kevin Szabo Jr Plumbing and Sewer | 57 | 4.9★ (1,423) | Tinley Park, 24 mi away | Sat · Sun · Evenings | Most reviews |
| 5 | B & D Plumbing And Sewer Service, Inc. | 57 | 5.0★ (232) | Frankfort, 19 mi away | 24/7 | — |
| 6 | FreeFlow Environmental | 57 | 4.7★ (911) | Valparaiso, 17 mi away | — | — |
| 7 | Shelton's Tank Cleaning Inc. | 56 | 3.7★ (33) | Merrillville | Sat · Sun | — |
| 8 | Scott's Septic Service | 56 | 4.4★ (23) | Chicago, 12 mi away | 24/7 | — |
| 9 | Affordable Sewer And Plumbing | 56 | 5.0★ (180) | Country Club Hills, 20 mi away | 24/7 | — |
| 10 | Downing Plumbing | 56 | 4.4★ (189) | Merrillville | 24/7 | — |
The 62 best septic service companies in Merrillville, 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 Valparaiso, 12 mi away
58/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.6★ from 53 Google reviews, listed on Google as “Septic system service”.
Based in Merrillville
57/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 74 Google reviews, listed on Google as “Septic system service”.
Based in Tinley Park, 24 mi away
57/100CR ScoreRanked #4 because of its Google rating and review volume: 4.9★ from 1,423 Google reviews, the most in Merrillville.
Based in Frankfort, 19 mi away
57/100CR ScoreRanked #5 because of its Google rating and review volume: 5.0★ from 232 Google reviews.
Based in Valparaiso, 17 mi away
57/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.7★ from 911 Google reviews, listed on Google as “Septic system service”.
Based in Merrillville
56/100CR ScoreRanked #7 because of its Google rating and trade focus: 3.7★ from 33 Google reviews, listed on Google as “Septic system service”.
Based in Chicago, 12 mi away
56/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.4★ from 23 Google reviews, listed on Google as “Septic system service”.
Based in Country Club Hills, 20 mi away
56/100CR ScoreRanked #9 because of its Google rating and review volume: 5.0★ from 180 Google reviews.
#10 Downing Plumbing
Based in Merrillville
56/100CR ScoreRanked #10 because of its Google rating and review volume: 4.4★ from 189 Google reviews.
Based in Merrillville
55/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.2★ from 19 Google reviews, listed on Google as “Septic system service”.
Based in Glenwood, 15 mi away
55/100CR ScoreRanked #12 because of its Google rating and review volume: 4.6★ from 166 Google reviews.
Based in Valparaiso, 14 mi away
55/100CR ScoreRanked #13 because of its Google rating and review volume: 4.7★ from 372 Google reviews.
Based in Chicago, 4 mi away
54/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.2★ from 19 Google reviews, listed on Google as “Septic system service”.
Based in South Holland, 17 mi away
54/100CR ScoreRanked #15 because of its Google rating and review volume: 4.9★ from 269 Google reviews.
Based in Merrillville
54/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.5★ from 16 Google reviews, listed on Google as “Septic system service”.
Based in Lake Station, 5 mi away
54/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 25 Google reviews, listed on Google as “Septic system service”.
Based in Countryside, 23 mi away
54/100CR ScoreRanked #18 because of its Google rating and review volume: 4.4★ from 420 Google reviews.
Based in Munster, 9 mi away
53/100CR ScoreRanked #19 because of its Google rating and review volume: 4.8★ from 399 Google reviews.
Based in Hammond, 11 mi away
53/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 98 Google reviews, listed on Google as “Plumber”.
Based in Cedar Lake, 15 mi away
53/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.7★ from 31 Google reviews, listed on Google as “Plumber”.
Based in Oak Forest, 23 mi away
52/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 58 Google reviews, listed on Google as “Plumber”.
Based in Chicago, 22 mi away
52/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.6★ from 81 Google reviews, listed on Google as “Plumber”.
Based in Gary, 5 mi away
52/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “Septic system service”.
Based in Crown Point, 20 mi away
52/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 60 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 62 ranked septic service companies here; the rest are on their profiles.
Also serving Merrillville
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 First Amer Plumbing & Sewer Rtr | 13 mi | |
| A Plumbing & Sewer | 1.0★ (2) | 5 mi |
| A Tom Plumbing & Sewer | 6 mi | |
| A. Metz, Sewer Inc. | 5.0★ (2) | 7 mi |
| A&S SEWER AND DRAIN SERVICES | 5.0★ (2) | 7 mi |
| Apex Septic Solutions | 7 mi | |
| Area Plumbing & Sewer Co Inc | 14 mi | |
| B&D Sewer. Underground Construction. | 1.0★ (1) | 6 mi |
| Blu Sky Industries | 16 mi | |
| D & B Sewer & Drain Services & Plumbing | 5.0★ (1) | 9 mi |
| Don's Sewer & Septic Services | 5.0★ (1) | 10 mi |
| DPS Sewer Construction & Hauling, LLC | 16 mi | |
| Erris Sewer and Plumbing | 5.0★ (2) | 18 mi |
| Ground Control Inc. Excavating & Septic installation | 5.0★ (1) | 22 mi |
| Jean's Septic, Inc. | 3 mi | |
| Karl Meyer Expert Plumbing | 5.0★ (1) | 23 mi |
| MJ's Plumbing and Sewer | 5.0★ (2) | 23 mi |
| O'Brien Family Sewer and Plumbing Services | 5.0★ (1) | 22 mi |
| Sewer & Plumbing Service Inc | 12 mi | |
| Tony's Sewer & Plumbing | In Merrillville |
How we ranked Merrillville septic service companies
We scored 62 Merrillville 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 Merrillville 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 Merrillville: frequently asked questions
Who is the best septic service company in Merrillville?
By CR Score, the highest-ranked septic service company in Merrillville, IN is FreeFlow Environmental with a CR Score of 58/100. It has 4.9★ from 13 Google reviews. It is open 24/7. Ground Improvement Services (#2) and Beebe's Excavation & Septic Service LLC (#3) follow. We ranked 62 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Merrillville?
ContractorsRanked ranks 62 septic service companies serving Merrillville, IN. 6 of them are based in Merrillville; 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 Merrillville are open 24/7?
21 ranked septic service companies in Merrillville post 24/7 hours. The highest-ranked are FreeFlow Environmental (#1), Ground Improvement Services (#2) and B & D Plumbing And Sewer Service, Inc. (#5). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Merrillville work on weekends?
38 of 62 ranked septic service companies post Saturday hours and 28 post Sunday hours. The highest-ranked open Saturdays are FreeFlow Environmental (#1), Ground Improvement Services (#2) and Kevin Szabo Jr Plumbing and Sewer (#4). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Merrillville septic service companies have?
The median Google rating among 62 rated septic service companies in Merrillville is 4.6★, with a median of 27 reviews. Kevin Szabo Jr Plumbing and Sewer has the most, 1,423 reviews, and ranks #4. 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 Merrillville count in this ranking?
Yes, if they are within 25 mi of the Merrillville 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 Merrillville
- November 2026: CR Scores recalculated for 62 septic service companies serving Merrillville.
- November 2026: 1 duplicate listing merged.
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