68/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 260 Google reviews, the most in Sumter.
Best Septic Service Companies in Sumter, SC (2026)
6 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Sumter: Thames Lawn Care, Pressure Washing, & Septic Service, CR Score 68/100; 4.8★ from 260 Google reviews; open 24/7.
- 2
Most-reviewed: Brunson's Septic Tanks & Lot Clearing LLC, 63 Google reviews at 5.0★, the most of 6 ranked after Thames Lawn Care, Pressure Washing, & Septic Service; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
6 Sumter septic service companies are ranked here by CR Score, from ten published factors. 1 is open 24/7, 2 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 4.7★ across 6 rated businesses.
Top 6 septic service companies in Sumter at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Thames Lawn Care, Pressure Washing, & Septic Service | 68 | 4.8★ (260) | Sumter | 24/7 | Overall |
| 2 | Brunson's Septic Tanks & Lot Clearing LLC | 60 | 5.0★ (63) | Sumter | — | Most reviews |
| 3 | Tidwell Septic Tanks Inc | 56 | 4.6★ (23) | Sumter | — | — |
| 4 | Maple's Construction & Septic | 53 | 2.4★ (7) | Sumter | — | — |
| 5 | Sikes' Septic Tank & Pumping | 50 | 4.4★ (18) | Columbia, 21 mi away | — | — |
| 6 | Thad's Hauling And Excavating | 49 | 5.0★ (4) | Sumter | Sat | — |
The 6 best septic service companies in Sumter, 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 Sumter
60/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 63 Google reviews, listed on Google as “Septic system service”.
Based in Sumter
56/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.6★ from 23 Google reviews, listed on Google as “Septic system service”.
Based in Sumter
53/100CR ScoreRanked #4 because of its Google rating and trade focus: 2.4★ from 7 Google reviews, listed on Google as “Septic system service”.
Based in Columbia, 21 mi away
50/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.4★ from 18 Google reviews, listed on Google as “Septic system service”.
Based in Sumter
49/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Excavating contractor”.
How we ranked Sumter septic service companies
We scored 6 Sumter 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 Sumter 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 Sumter: frequently asked questions
Who is the best septic service company in Sumter?
By CR Score, the highest-ranked septic service company in Sumter, SC is Thames Lawn Care, Pressure Washing, & Septic Service with a CR Score of 68/100. It has 4.8★ from 260 Google reviews. It is open 24/7. Brunson's Septic Tanks & Lot Clearing LLC (#2) and Tidwell Septic Tanks Inc (#3) follow. We ranked 6 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Sumter?
ContractorsRanked ranks 6 septic service companies serving Sumter, SC. 5 of them are based in Sumter; the rest serve it from nearby towns. Counts are as of November 2026.
Which septic service companies in Sumter are open 24/7?
1 ranked septic service company in Sumter posts 24/7 hours. The highest-ranked is Thames Lawn Care, Pressure Washing, & Septic Service (#1). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Sumter work on weekends?
2 of 6 ranked septic service companies post Saturday hours and 1 post Sunday hours. The highest-ranked open Saturdays are Thames Lawn Care, Pressure Washing, & Septic Service (#1) and Thad's Hauling And Excavating (#6). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Sumter septic service companies have?
The median Google rating among 6 rated septic service companies in Sumter is 4.7★, with a median of 21 reviews. Thames Lawn Care, Pressure Washing, & Septic Service has the most, 260 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 Sumter count in this ranking?
Yes, if they are within 25 mi of the Sumter 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 Sumter
- November 2026: CR Scores recalculated for 6 septic service companies serving Sumter.
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