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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
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
9 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

Modern septic tanks have two lids: one that covers the inlet where wastewater flows into the tank and one that covers the outlet where the treated water flows out to the drain field. However, older septic tanks installed before 1975 may have only one lid. Because septic tanks last 20 to 40 years, if yours only has one lid, it may be time for a replacement.

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. 

A submersible pump should be at least 10 feet from the bottom of the well to minimize the risk of the pump drawing debris into the well water. Submersible pumps work best for wells that are 25 feet deep or less. If you have a deeper well, choose a jet pump instead of a submersible model.

There are a few signs that indicate a failing drain field. For instance, if your septic tank starts requiring more pumping than normal, your drain field might be failing. Other signs to watch for include poor drainage after rain, standing water or sewage over the septic system, a strong septic smell outside, new and healthy grass growing over the drain field, and plumbing backups in your sinks, bathtubs, or toilets.

To prevent septic tank problems, save on repair costs, and keep your home running smoothly, it's essential to perform regular maintenance. Have your septic system inspected by a professional every one to three years, or annually if possible, to spot potential issues before they develop. You should also have your tank pumped every three to five years, or more frequently if recommended by a professional based on your household's usage. Additionally, be mindful of what goes into your system. Avoid flushing items like paper towels, wet wipes, and feminine hygiene products. Do not dispose of other inappropriate substances, and try to avoid excessive water usage at a single time.

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.