59/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 384 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 Wilmington, OH (2026)
18 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Wilmington: SepTek Services, CR Score 59/100; 4.8★ from 384 Google reviews; open 7 days a week.
- 2
Best for emergencies (open 24/7): CJ Septic Services, posts 24/7 hours; ranked #2 of 18.
- 5
Most-reviewed: Triple A Pro Services, 653 Google reviews at 4.8★, the most of 18 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
18 Wilmington septic service companies are ranked here by CR Score, from ten published factors. 2 are open 24/7, 8 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.8★ across 18 rated businesses.
Top 10 septic service companies in Wilmington at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | SepTek Services | 59 | 4.8★ (384) | Franklin, 24 mi away | Sat · Sun | Overall |
| 2 | CJ Septic Services | 58 | 4.6★ (9) | Wilmington | 24/7 | Emergencies |
| 3 | Blue Ox Septic | 58 | 5.0★ (50) | Xenia, 16 mi away | Sat · Sun · Evenings | — |
| 4 | Water Logged Septics LLC | 57 | 5.0★ (49) | Kettering, 13 mi away | — | — |
| 5 | Triple A Pro Services | 57 | 4.8★ (653) | Middletown, 24 mi away | — | Most reviews |
| 6 | Complete Septic | 56 | 4.7★ (60) | Goshen, 22 mi away | Sat · Sun | — |
| 7 | G.D. Allen & Son septic/excavation | 55 | 4.3★ (11) | Centerville, 4 mi away | Sat · Evenings | — |
| 8 | A to Z Septic and Pumping | 55 | 4.9★ (50) | Dayton, 20 mi away | Sat | — |
| 9 | Bishop Septic Pumping | 54 | 4.6★ (66) | Mason, 22 mi away | — | — |
| 10 | Neal's Septic Services | 53 | 4.8★ (24) | Goshen, 21 mi away | — | — |
The 18 best septic service companies in Wilmington, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Wilmington
58/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Xenia, 16 mi away
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 50 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kettering, 13 mi away
57/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 49 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Middletown, 24 mi away
57/100CR ScoreRanked #5 because of its Google rating and review volume: 4.8★ from 653 Google reviews, the most in Wilmington.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Goshen, 22 mi away
56/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.7★ from 60 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Centerville, 4 mi away
55/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.3★ from 11 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dayton, 20 mi away
55/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 50 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mason, 22 mi away
54/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.6★ from 66 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Goshen, 21 mi away
53/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 24 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Wilmington
51/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Lebanon, 14 mi away
51/100CR ScoreRanked #12 because of its Google rating and review volume: 5.0★ from 57 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Xenia, 16 mi away
50/100CR ScoreRanked #13 because of its Google rating and review volume: 4.3★ from 27 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Centerville, 15 mi away
47/100CR ScoreRanked #14 because of its Google rating and review volume: 4.8★ from 31 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Beavercreek, 25 mi away
46/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.3★ from 13 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Dayton, 24 mi away
46/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.6★ from 17 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#17 Roto Rooter
Based in Portsmouth, 10 mi away
46/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.1★ from 18 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lebanon, 19 mi away
44/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Also serving Wilmington
7 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 |
|---|---|---|
| Dirt worx LLC | 15 mi | |
| Fisher's septic installation | 23 mi | |
| Haddix Environmental Services | 19 mi | |
| LandWORX Cincinnati LLC | 23 mi | |
| Porginski Excavating, LLC | 5.0★ (2) | 15 mi |
| Septic Tank Dayton Ohio | 5.0★ (1) | 23 mi |
| Zoom Drain | 19 mi |
How we ranked Wilmington septic service companies
We scored 18 Wilmington 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 Wilmington 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 Wilmington: frequently asked questions
Who is the best septic service company in Wilmington?
By CR Score, the highest-ranked septic service company in Wilmington, OH is SepTek Services with a CR Score of 59/100. It has 4.8★ from 384 Google reviews. It is open 7 days a week. CJ Septic Services (#2) and Blue Ox Septic (#3) follow. We ranked 18 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Wilmington?
ContractorsRanked ranks 18 septic service companies serving Wilmington, OH. 2 of them are based in Wilmington; the rest serve it from nearby towns. Another 7 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Wilmington are open 24/7?
2 ranked septic service companies in Wilmington post 24/7 hours. The highest-ranked are CJ Septic Services (#2) and CT Brown Sanitation & Drain Cleaning (#13). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Wilmington work on weekends?
8 of 18 ranked septic service companies post Saturday hours and 4 post Sunday hours. The highest-ranked open Saturdays are SepTek Services (#1), CJ Septic Services (#2) and Blue Ox Septic (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Wilmington septic service companies have?
The median Google rating among 18 rated septic service companies in Wilmington is 4.8★, with a median of 29 reviews. Triple A Pro Services has the most, 653 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 Wilmington count in this ranking?
Yes, if they are within 25 mi of the Wilmington 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 Wilmington
- November 2026: CR Scores recalculated for 18 septic service companies serving Wilmington.
More septic service companies and Wilmington pages
Septic service companies near Wilmington
- Septic service companies in Xenia, OH41 ranked
- Septic service companies in Lebanon, OH49 ranked
- Septic service companies in Centerville, OH45 ranked
- Septic service companies in Washington Court House, OH7 ranked
- Septic service companies in Beavercreek, OH50 ranked
- Septic service companies in Springboro, OH46 ranked
- Septic service companies in Goshen, OH49 ranked
- Septic service companies in Kettering, OH48 ranked
- Septic service companies in Loveland, OH53 ranked
- Septic service companies in Mason, OH51 ranked
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