58/100CR Score
Ranked #1 because of its Google rating and review volume: 4.6★ from 353 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Charleston, SC (2026)
15 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Charleston: Benjamin Franklin Plumbing of Charleston, CR Score 58/100; 4.6★ from 353 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Mr. Rooter Plumbing of Greater Charleston, posts 24/7 hours; ranked #2 of 15.
- 2
Most-reviewed: Mr. Rooter Plumbing of Greater Charleston, 958 Google reviews at 4.7★, the most of 15 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
15 Charleston septic service companies are ranked here by CR Score, from ten published factors. 4 are open 24/7, 8 open Saturdays and 5 open Sundays, based on posted hours. The median Google rating is 4.5★ across 15 rated businesses.
Top 10 septic service companies in Charleston at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Benjamin Franklin Plumbing of Charleston | 58 | 4.6★ (353) | Charleston | 24/7 | Overall |
| 2 | Mr. Rooter Plumbing of Greater Charleston | 57 | 4.7★ (958) | North Charleston, 13 mi away | 24/7 | Emergencies, Most reviews |
| 3 | White's Septic Tank Service | 55 | 5.0★ (3) | Charleston | Sat · Sun | — |
| 4 | ISLAND SEPTIC SYSTEMS | 55 | 4.9★ (20) | Charleston | — | — |
| 5 | ALL Plumbing Company | Charleston Plumbers | 53 | 4.6★ (128) | Charleston | Sat | — |
| 6 | Total Plumbing and Electric | 53 | 4.5★ (24) | Charleston | 24/7 | — |
| 7 | A-1 Septic Tank Service | 53 | 3.6★ (36) | Charleston | — | — |
| 8 | Pro Plumbing | 53 | 4.7★ (135) | Ladson, 18 mi away | 24/7 | — |
| 9 | Superior Charleston Septic | 52 | 5.0★ (4) | Charleston | — | — |
| 10 | United Site Services | 51 | 2.7★ (7) | North Charleston, 7 mi away | Sat · Evenings | — |
The 15 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.
Based in North Charleston, 13 mi away
57/100CR ScoreRanked #2 because of its Google rating and review volume: 4.7★ from 958 Google reviews, the most in Charleston.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Charleston
55/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Charleston
55/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 20 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Charleston
53/100CR ScoreRanked #5 because of its Google rating and review volume: 4.6★ from 128 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Charleston
53/100CR ScoreRanked #6 because of its Google rating and availability: 4.5★ from 24 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Charleston
53/100CR ScoreRanked #7 because of its Google rating and trade focus: 3.6★ from 36 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#8 Pro Plumbing
Based in Ladson, 18 mi away
53/100CR ScoreRanked #8 because of its Google rating and review volume: 4.7★ from 135 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Charleston
52/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in North Charleston, 7 mi away
51/100CR ScoreRanked #10 because of its Google rating and trade focus: 2.7★ from 7 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in North Charleston, 7 mi away
51/100CR ScoreRanked #11 because of its Google rating and trade focus: 2.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ladson, 19 mi away
47/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Summerville, 23 mi away
47/100CR ScoreRanked #13 because of its Google rating and trade focus: 2.0★ from 3 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Goose Creek, 9 mi away
44/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Summerville, 22 mi away
43/100CR ScoreRanked #15 because of its Google rating and trade focus: 3.3★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Also serving Charleston
8 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 |
|---|---|---|
| Charleston Septic Tank Pumping Co | In Charleston | |
| Fain Septic Tank Services | 4.0★ (1) | In Charleston |
| H2O Pro Service, LLC | 10 mi | |
| Palmetto Sewer and Drain Clearing | 16 mi | |
| R&G Plumbing & Sewer Services Inc. | 3.0★ (2) | 21 mi |
| Rickey's Trucking & Construction LLC. | 14 mi | |
| Septic Tank Repair Services | 21 mi | |
| Suburban Plumbing | 16 mi |
How we ranked Charleston septic service companies
We scored 15 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, SC is Benjamin Franklin Plumbing of Charleston with a CR Score of 58/100. It has 4.6★ from 353 Google reviews. It is open 24/7. Mr. Rooter Plumbing of Greater Charleston (#2) and White's Septic Tank Service (#3) follow. We ranked 15 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Charleston?
ContractorsRanked ranks 15 septic service companies serving Charleston, SC. 7 of them are based in Charleston; the rest serve it from nearby towns. Another 8 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?
4 ranked septic service companies in Charleston post 24/7 hours. The highest-ranked are Benjamin Franklin Plumbing of Charleston (#1), Mr. Rooter Plumbing of Greater Charleston (#2) and Total Plumbing and Electric (#6). 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?
8 of 15 ranked septic service companies post Saturday hours and 5 post Sunday hours. The highest-ranked open Saturdays are Benjamin Franklin Plumbing of Charleston (#1), Mr. Rooter Plumbing of Greater Charleston (#2) and White's Septic Tank Service (#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 15 rated septic service companies in Charleston is 4.5★, with a median of 7 reviews. Mr. Rooter Plumbing of Greater Charleston has the most, 958 reviews, and ranks #2. 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 15 septic service companies serving Charleston.
More septic service companies and Charleston pages
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