58/100CR Score
Ranked #1 because of its Google rating and review volume: 4.7★ from 461 Google reviews, the most in Charleston.
Best Septic Service Companies in Charleston, IL (2026)
10 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Charleston: Roto-Rooter, CR Score 58/100; 4.7★ from 461 Google reviews; open 24/7.
- 6
Best for emergencies (open 24/7): Central Illinois Septic Services, posts 24/7 hours; ranked #6 of 10.
- 4
Most-reviewed: Crouse Concepts, Inc. Sewer & Septic Service, 107 Google reviews at 5.0★, the most of 10 ranked after Roto-Rooter; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
10 Charleston septic service companies are ranked here by CR Score, from ten published factors. 3 are open 24/7, 7 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.8★ across 10 rated businesses.
Top 10 septic service companies in Charleston at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Roto-Rooter | 58 | 4.7★ (461) | Mattoon, 11 mi away | 24/7 | Overall |
| 2 | Sims Septic Pumping LLC. | 57 | 5.0★ (14) | Charleston | Sat | — |
| 3 | Hamilton Sewer and Drain | 57 | 5.0★ (73) | Mattoon, 10 mi away | Sat · Sun · Evenings | — |
| 4 | Crouse Concepts, Inc. Sewer & Septic Service | 54 | 5.0★ (107) | Douglas, 23 mi away | — | Most reviews |
| 5 | Geno's 24/7 Sewer and Drain Cleaning | 53 | 4.5★ (44) | Mattoon, 11 mi away | Sat · Emergency | — |
| 6 | Central Illinois Septic Services | 53 | 5.0★ (4) | Douglas, 21 mi away | 24/7 | Emergencies |
| 7 | Fuller-Wente, Inc. | 50 | 3.7★ (7) | Mattoon, 12 mi away | — | — |
| 8 | Shamrock Sewer and Plumbing | 49 | 2.8★ (9) | Manteno, 17 mi away | 24/7 | — |
| 9 | Snearley & Company | 49 | 3.8★ (21) | Douglas, 19 mi away | — | — |
| 10 | Abc Septic And Drain Co. | 47 | 5.0★ (13) | Vincennes, 23 mi away | Sat | — |
The 10 best septic service companies in Charleston, 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 Charleston
57/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Septic system service”.
Based in Mattoon, 10 mi away
57/100CR ScoreRanked #3 because of its Google rating and review volume: 5.0★ from 73 Google reviews.
Based in Douglas, 23 mi away
54/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 107 Google reviews, listed on Google as “Septic system service”.
Based in Mattoon, 11 mi away
53/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.5★ from 44 Google reviews, listed on Google as “Plumber”.
Based in Douglas, 21 mi away
53/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based in Mattoon, 12 mi away
50/100CR ScoreRanked #7 because of its Google rating and trade focus: 3.7★ from 7 Google reviews, listed on Google as “Septic system service”.
Based in Manteno, 17 mi away
49/100CR ScoreRanked #8 because of its Google rating and trade focus: 2.8★ from 9 Google reviews, listed on Google as “Plumber”.
Based in Douglas, 19 mi away
49/100CR ScoreRanked #9 because of its Google rating and trade focus: 3.8★ from 21 Google reviews, listed on Google as “Septic system service”.
Based in Vincennes, 23 mi away
47/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Plumber”.
Also serving Charleston
4 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 |
|---|---|---|
| Bennett Sewers&More | 17 mi | |
| Gardner Excavating & Directional Boring LLC | 3.0★ (2) | 10 mi |
| NC Drainage LLC | 5.0★ (1) | In Charleston |
| Walk Trucking & Excavating | 5.0★ (1) | 24 mi |
How we ranked Charleston septic service companies
We scored 10 Charleston 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 Charleston 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 Charleston: frequently asked questions
Who is the best septic service company in Charleston?
By CR Score, the highest-ranked septic service company in Charleston, IL is Roto-Rooter with a CR Score of 58/100. It has 4.7★ from 461 Google reviews. It is open 24/7. Sims Septic Pumping LLC. (#2) and Hamilton Sewer and Drain (#3) follow. We ranked 10 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Charleston?
ContractorsRanked ranks 10 septic service companies serving Charleston, IL. 1 of them is based in Charleston; the rest serve it from nearby towns. Another 4 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Charleston are open 24/7?
3 ranked septic service companies in Charleston post 24/7 hours. The highest-ranked are Roto-Rooter (#1), Central Illinois Septic Services (#6) and Shamrock Sewer and Plumbing (#8). Geno's 24/7 Sewer and Drain Cleaning (#5) also lists emergency service. Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Charleston work on weekends?
7 of 10 ranked septic service companies post Saturday hours and 4 post Sunday hours. The highest-ranked open Saturdays are Roto-Rooter (#1), Sims Septic Pumping LLC. (#2) and Hamilton Sewer and Drain (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Charleston septic service companies have?
The median Google rating among 10 rated septic service companies in Charleston is 4.8★, with a median of 18 reviews. Roto-Rooter has the most, 461 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 Charleston count in this ranking?
Yes, if they are within 25 mi of the Charleston 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 Charleston
- November 2026: CR Scores recalculated for 10 septic service companies serving Charleston.
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