20 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Hanahan: Mr. Rooter Plumbing of Greater Charleston, CR Score 60/100; 4.7★ from 958 Google reviews; open 24/7.
Best for emergencies (open 24/7): Knights Septic Tank Services, posts 24/7 hours; ranked #2 of 20.
Most-reviewed: Benjamin Franklin Plumbing of Charleston, 353 Google reviews at 4.6★, the most of 20 ranked after Mr. Rooter Plumbing of Greater Charleston; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
20 Hanahan septic service companies are ranked here by CR Score, from ten published factors. 5 are open 24/7, 9 open Saturdays and 6 open Sundays, based on posted hours. The median Google rating is 4.5★ across 20 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mr. Rooter Plumbing of Greater Charleston | 60 | 4.7★ (958) | North Charleston, 3 mi away | 24/7 | Overall |
| 2 | Knights Septic Tank Services | 59 | 4.7★ (114) | Summerville, 15 mi away | 24/7 | Emergencies |
| 3 | Benjamin Franklin Plumbing of Charleston | 57 | 4.6★ (353) | Charleston, 5 mi away | 24/7 | Most reviews |
| 4 | Pro Plumbing | 55 | 4.7★ (135) | Ladson, 7 mi away | 24/7 | — |
| 5 | United Site Services | 52 | 2.7★ (7) | North Charleston, 5 mi away | Sat · Evenings | — |
| 6 | Palmetto Site Solutions, LLC | 52 | 4.9★ (32) | North Charleston, 17 mi away | — | — |
| 7 | Knight's Septic Tank Services | 52 | 4.9★ (16) | Moncks Corner, 19 mi away | — | — |
| 8 | White's Septic Tank Service | 52 | 5.0★ (3) | Charleston, 13 mi away | Sat · Sun | — |
| 9 | United Site Services | 51 | 2.0★ (4) | North Charleston, 5 mi away | Sat · Evenings | — |
| 10 | Total Plumbing and Electric | 51 | 4.5★ (24) | Charleston, 9 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 in Hanahan
Based in North Charleston, 3 mi away
Ranked #1 because of its Google rating and review volume: 4.7★ from 958 Google reviews, the most in Hanahan.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Summerville, 15 mi away
Ranked #2 because of its Google rating and trade focus: 4.7★ from 114 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Charleston, 5 mi away
Ranked #3 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.
Based in Ladson, 7 mi away
Ranked #4 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 North Charleston, 5 mi away
Ranked #5 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, 17 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 32 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Moncks Corner, 19 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 16 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Charleston, 13 mi away
Ranked #8 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 North Charleston, 5 mi away
Ranked #9 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 Charleston, 9 mi away
Ranked #10 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, 9 mi away
Ranked #11 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.
Based in Charleston, 11 mi away
Ranked #12 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 Ladson, 8 mi away
Ranked #13 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 Charleston, 10 mi away
Ranked #14 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 Summerville, 12 mi away
Ranked #15 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 Charleston, 23 mi away
Ranked #16 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 Summerville, 15 mi away
Ranked #17 because of its Google rating and trade focus: 3.3★ from 16 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Summerville, 11 mi away
Ranked #18 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.
Based in Goose Creek, 3 mi away
Ranked #19 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 Moncks Corner, 22 mi away
Ranked #20 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
11 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 |
|---|---|---|
| Alpha Wastewater Solutions | 5.0★ (1) | 21 mi |
| Charleston Septic Tank Pumping Co | 7 mi | |
| Fain Septic Tank Services | 4.0★ (1) | 1 mi |
| H2O Pro Service, LLC | In Hanahan | |
| Jackson Septic Tank & Construction | 5.0★ (1) | 17 mi |
| Palmetto Sewer and Drain Clearing | 5 mi | |
| R&G Plumbing & Sewer Services Inc. | 3.0★ (2) | 10 mi |
| Rickey's Trucking & Construction LLC. | 3 mi | |
| Septic Tank Repair Services | 10 mi | |
| Suburban Plumbing | 5 mi | |
| Timco Construction | 5.0★ (1) | 18 mi |
We scored 20 Hanahan 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 Hanahan 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 |