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TRUSTED BY DUNCAN, SC HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon163
    Verified septic tank services reviews

Top-Rated Septic tank pros in Duncan - Updated Nov 2026

Avatar for Swamp Rabbit Septic
Swamp Rabbit Septic
5.0(
54
)
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Duncan, SC and surrounding areas

Approved

In business since 2019

Free estimates

Offers commercial services

"The appointment was set up very soon after entering the request. The crew was professional as well as friendly and explainrd all that they were doing. Being a very old septic system, it took some time to find the septic tank and get the very heavy lid off, but all was accomplished and in a totally satisfactory manner."
Response time4 hrs
Response rate94%
6 neighbors recently requested a quote
Avatar for Patriot Septic LLC
Patriot Septic LLC
5.0(
12
)
Septic System - RepairSeptic System - Repair - For BusinessSeptic Tank - Clean or Pump Out+1 more

Serving Duncan, SC and surrounding areas

Approved

In business since 2020

Free estimates

Small jobs welcome

Patriot Septic LLC is a family-owned and locally operated septic service proudly serving Upstate South Carolina, including Greenville, Pickens, and Oconee counties.\nRooted in family values and local integrity, we provide reliable, professional septic solutions with honesty and care. Our services include tank pumping, maintenance, emergency repairs, new installations, grease trap cleaning, grading, land clearing, and excavation.\nCount on us for timely, customized service you can trust. Visit patriotsepticsc.com to learn more or schedule service today!

EXCAVATION / GRADING
EXCAVATOR DIGGING FOUNDATION FOR BUILDING
EXCAVATION / GRADING
BUILDING PREP GRADING
Septic System Install

+9

Response time8 hrs
Response rate100%
Recommended by58%of homeowners
Avatar for Upstate Septic Pro
Upstate Septic Pro
5.0(
10
)
Septic Tank - Clean or Pump OutSeptic System - Install or ReplaceSeptic System - Repair+3 more

Serving Duncan, SC and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"They have power washed my driveway, bush hogged our back yard, and extended a leach line on our septic system and were very easy to work with a responsive and quick to the job at hand. Very professional and knowledgeable. Would most definitely hire again!"
300 foot of drainfield
Response time7 hrs
6 neighbors recently requested a quote
Recommended by70%of homeowners
Avatar for Jonathan Blackburn Contractors, LLC
Jonathan Blackburn Contractors, LLC
4.9(
42
)
Septic System - Repair

Serving Duncan, SC and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Jonathan and his people did an awesome job of explaining the process, with all of my questions. Did a great job of working with us on schedule to fit into a very busy week. Excellent and clean install with a complete clean up job."
Bore New Water Service
Service Line Repair
Drainage Ditch
Camera Sewer Service
Storm Drain Repair

+16

Response time8 hrs
25 neighbors recently requested a quote
Recommended by94%of homeowners
Smart Septic Solutions
3.9(
7
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Duncan, SC and surrounding areas

Approved

In business since 2014

Free estimates

Small jobs welcome

"Im glad i called Smart Septic Solutions because they made the whole process so simple. They answered when I called, were quick to come out to access, and started work on time like they said. They were also able to get to me sooner than all the other companies i called which was a life saver. In all, im glad I was able to find a company that cares for the customers and one the does what they say they will do, when they say they'll do it."
New Septic Tank install
New Septic Tank install
New Septic Tank install
New Septic Tank install
Response time1 day
Response rate100%
Avatar for Mr. Rooter Plumbing of Greenville
Mr. Rooter Plumbing of Greenville
5.0(
6
)
Septic System - Install or Replace

Serving Duncan, SC and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

Mr. Rooter is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Team Photo
Response time6 hrs
8 neighbors recently requested a quote
Recommended by16%of homeowners
Avatar for Epic Septics LLC
Epic Septics LLC
4.9(
24
)
Septic System - Install or ReplaceSeptic System - Repair

Serving Duncan, SC and surrounding areas

In business since 2022

Free estimates

Emergency services offered

"Russ was very professional, dependable, and trustworthy. Fixed my backyard drainage issue and even took an extra job, delivering topsoil and grading my backyard. Great customer service!"
Response time12 hrs
Response rate100%
5 neighbors recently requested a quote
Showing 1-10 of 45
Septic Tanks FAQs, answered by experts

Septic distribution boxes, also called D-boxes, tend to last over 30 years if taken care of extremely well. In most cases, however, they tend to last anywhere from 15 years to 40 years. Regular cleaning and maintenance, as well as living in an area that doesn’t flood the tank or the system regularly, will all have an impact on the lifespan of the box.

Depending on the size and location of your septic tank repair job, you may want to let the septic pros finish before tackling other backyard work. However, in some cases, it’s not a bad idea to coordinate between your providers if the timing’s right and your septic repair pro says it’s safe to do so. For instance, if the septic repair work is happening in the fall, you might want to take advantage of the opportunity to prepare your backyard landscaping for winter , or in spring, start mulching the garden beds.

Many variables, such as home size, type of engineered system, the material used, soil conditions, and water usage, dictate how long your system will last. On average, most homeowners find that their system lasts 15 to 20 years, though it’s not unheard of for them to last up to 40 years with annual and preventative septic maintenance.

Most homeowners know there’s a septic system problem when they can smell one. However, this isn’t exactly a scientific deduction method. Consider some of the other signs: standing water or constantly damp earth in the drainage area, toilets and sinks that won’t drain or frequently back up, and loud plumbing. You really need to be on top of routine maintenance with septic systems in order to avoid such unpleasant symptoms of a septic issue. 

The best bacteria to add to a septic tank is anaerobic bacteria, which doesn't use oxygen to break down solid waste. Because there is less oxygen in a septic tank, anaerobic bacteria can decompose sludge in a sealed environment. On the other hand, aerobic bacteria need oxygen and are prevalent in the leach or drain field of a septic system.

The Duncan, SC homeowners’ guide to septic tank services

From average costs to expert advice, get all the answers you need to get your job done.