63/100CR Score
Ranked #1 because of its Google rating and review volume: 5.0★ from 509 Google reviews, the most in Union.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Union, SC (2026)
12 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Union: Prince Septic Service, CR Score 63/100; 5.0★ from 509 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Ivey Septic Service, posts 24/7 hours; ranked #2 of 12.
- 6
Most-reviewed: One Call Plumbing, 285 Google reviews at 5.0★, the most of 12 ranked after Prince Septic Service; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
12 Union septic service companies are ranked here by CR Score, from ten published factors. 4 are open 24/7, 5 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 5.0★ across 12 rated businesses.
Top 10 septic service companies in Union at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Prince Septic Service | 63 | 5.0★ (509) | Greer, 22 mi away | 24/7 | Overall |
| 2 | Ivey Septic Service | 61 | 5.0★ (12) | Union | 24/7 | Emergencies |
| 3 | Jason Pruitt Septic Tank Service | 57 | 4.6★ (94) | Spartanburg, 21 mi away | Sat · Sun | — |
| 4 | Mr. Rooter Plumbing of Spartanburg | 53 | 4.9★ (99) | Spartanburg, 21 mi away | 24/7 | — |
| 5 | Seay’s Septic | 53 | 5.0★ (9) | Greer, 22 mi away | 24/7 | — |
| 6 | One Call Plumbing | 50 | 5.0★ (285) | Greer, 24 mi away | — | Most reviews |
| 7 | Jolly's Plumbing and Septic | 49 | 4.5★ (40) | Spartanburg, 23 mi away | — | — |
| 8 | 29:11 Construction | 49 | 5.0★ (9) | Union | Evenings | — |
| 9 | Gilbert Plumbing Services, LLC | 49 | 4.9★ (175) | Five Forks, 24 mi away | — | — |
| 10 | Septicman | 47 | 1.0★ (8) | Spartanburg, 24 mi away | — | — |
The 12 best septic service companies in Union, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Union
61/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 21 mi away
57/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.6★ from 94 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 21 mi away
53/100CR ScoreRanked #4 because of its Google rating and review volume: 4.9★ from 99 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Greer, 22 mi away
53/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ 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 Greer, 24 mi away
50/100CR ScoreRanked #6 because of its Google rating and review volume: 5.0★ from 285 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 23 mi away
49/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.5★ from 40 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Union
49/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Five Forks, 24 mi away
49/100CR ScoreRanked #9 because of its Google rating and review volume: 4.9★ from 175 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
#10 Septicman
Based in Spartanburg, 24 mi away
47/100CR ScoreRanked #10 because of its Google rating and trade focus: 1.0★ from 8 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Spartanburg, 24 mi away
45/100CR 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 Gaffney, 23 mi away
45/100CR ScoreRanked #12 because of its Google rating and trade focus: 2.5★ from 4 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Also serving Union
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 |
|---|---|---|
| Johnson Excavating, Inc. | 5.0★ (2) | 21 mi |
| Sewer Hawg | 5.0★ (2) | 21 mi |
| Spartanburg SC Septic | 23 mi | |
| United Rentals - Reliable Onsite Services | 25 mi |
How we ranked Union septic service companies
We scored 12 Union 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 Union 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 Union: frequently asked questions
Who is the best septic service company in Union?
By CR Score, the highest-ranked septic service company in Union, SC is Prince Septic Service with a CR Score of 63/100. It has 5.0★ from 509 Google reviews. It is open 24/7. Ivey Septic Service (#2) and Jason Pruitt Septic Tank Service (#3) follow. We ranked 12 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Union?
ContractorsRanked ranks 12 septic service companies serving Union, SC. 2 of them are based in Union; 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 Union are open 24/7?
4 ranked septic service companies in Union post 24/7 hours. The highest-ranked are Prince Septic Service (#1), Ivey Septic Service (#2) and Mr. Rooter Plumbing of Spartanburg (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Union work on weekends?
5 of 12 ranked septic service companies post Saturday hours and 4 post Sunday hours. The highest-ranked open Saturdays are Prince Septic Service (#1), Ivey Septic Service (#2) and Jason Pruitt Septic Tank Service (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Union septic service companies have?
The median Google rating among 12 rated septic service companies in Union is 5.0★, with a median of 26 reviews. Prince Septic Service has the most, 509 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 Union count in this ranking?
Yes, if they are within 25 mi of the Union 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 Union
- November 2026: CR Scores recalculated for 12 septic service companies serving Union.
More septic service companies and Union pages
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