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  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon34
    Verified septic tank services reviews

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

Avatar for MCS Pumping
MCS Pumping
5.0(
3
)
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Potomac, MD and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

At MCS Pumping, we specialize in grease trap and septic pumping, ensuring efficient and effective waste management for our clients. Our experienced team is equipped to handle various pumping needs, fulfilling both residential and commercial demands. Our commitment is to guarantee cleanliness, safety, and reliability with every service we offer.

Grease Trap Services
Grease Trap Services
Grease Trap Services
Grease Trap Services
Septic Pump

+4

4 neighbors recently requested a quote
Avatar for H.P. Remodeling & Services, Inc.
H.P. Remodeling & Services, Inc.
New to Angi
Septic System - Install or ReplaceSeptic System - RepairSeptic Tank - Clean or Pump Out

Serving Potomac, MD and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

With over 15 years of experience H.P. Remodeling & Services, Inc., is one of Maryland's premier construction companies. We specialize in all your homes plumbing needs from small repair jobs to full installations, as well as any type of heating and cooling projects. For professionals with experience call your friendly neighborhood contractors at H.P. Remodeling & Services, Inc., today.

Response time2 days
Nando Fire Protection & Plumbing
New to Angi
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Potomac, MD and surrounding areas

Approved

In business since 2013

Free estimates

Offers commercial services

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Avatar for Heil Plumbing & Hvac
Heil Plumbing & Hvac
4.9(
238
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Potomac, MD and surrounding areas

In business since 1977

Free estimates

Emergency services offered

"The plumber was scheduled to come on 4/23 between 1:00 and 3:00p.m. At 1:00p.m. I got a call saying that the plumber would not be able to come until 4/24 as he was delayed at a previous call. He arrived promptly at 9:00a.m. the next morning. One toilet would not flush properly. He repaired that toilet. The other toilet ran on occasion. He replaced the fill valve. On occasion it still runs."
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+1

Recommended by96%of homeowners
Drain Pro Services
4.9(
69
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Potomac, MD and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"Excellent work. He covered his shoes while walking in the house. Before starting the project he analyzed the whole tubing route of the sink all the way to the basement. Cleaned up the whole area after the job was completed. Professional work ethics."
Recommended by96%of homeowners
Avatar for Definitive Plumbing & Heating
Definitive Plumbing & Heating
4.4(
106
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Potomac, MD and surrounding areas

In business since 2016

Emergency services offered

Credit card accepted

"Keon and his team were on top of it from the beginning. I was greeted well over the phone, and felt as if Keon was invested in my problem before being hired for the job. They were on time, very professionally dressed, and I felt their estimate was reasonable. As they explained the estimate, they were able to explain the why's of the estimate and give a rough estimate of the time it will take to complete the job. The quality of their work was outstanding. The care and craftsmanship that went into the install of the new supply lines can be easily observed. Supply lines were straight and parallel to one-another. They tested everything with me prior to and after cleanup, and made sure I was happy with everything before closing out the job. Definitive Plumbing and Heating takes great pride in their workmanship and relationship with their customers. They resolved all my issues, cleaned up behind themselves, and left my wife and I satisfied. At the writing of this review (about a month later) we have had no issues with the work and have received compliments regarding the layout design of the new supply lines. I would definitely use Definitive again for any plumbing needs, and I highly recommend them."
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+1

Recommended by83%of homeowners
R.K. Boswell Septic & Excavating
3.9(
106
)
Septic System - Install or ReplaceSeptic System - RepairSeptic Tank - Clean or Pump Out

Serving Potomac, MD and surrounding areas

In business since 2022

Free estimates

Credit card accepted

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction! \n \n

Recommended by84%of homeowners
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Septic Tanks FAQs, answered by experts

You can put yogurt in your septic tank, but it will not increase the bacteria in your septic tank. In other words, it won't harm your tank, but it won't get rid of a septic smell or boost the performance of your septic system. While yogurt contains helpful bacteria, you would need to buy an extraordinary amount of yogurt to make any difference. Adding yogurt is not a helpful or cost-effective strategy.

Saving money on property taxes and having direct control over your waste system are both pros when buying a house with a septic tank. However, it’s easier on the house and the yard if a home can be hooked up to a municipal system, which is why septic tanks are best for homes where that isn’t an option. Expensive repairs, potential odor issues, and regular maintenance are all cons of septic systems. 

Yes. A metal detector is one of the quickest and easiest ways to find your septic tank. However, metal detectors can be too expensive (costing upward of $300 in some cases), and not everyone has a metal detector just lying around. If that’s the case for you, you can also take a long metal rod and poke it into the ground at regular intervals until you hit something—likely your septic tank lid.

How to size a well pressure tank is determined by three factors: flow rate, or how many gallons per minute your well pump produces; minimum runtime; and pressure switch setting. Most pressure tanks have a pressure switch operating at 20/40, 30/50, and 40/60—the first number is the pressure needed for the pump to turn on, and the second number is the pressure needed for the pump to switch off. Most homeowners relying on well water require a water pressure tank ranging from 20 to 80 gallons. 

There are a variety of different types of septic systems that can work in your home—such as conventional anaerobic systems, chamber systems, drip distribution systems and mound septic systems. All of them work using natural processes to break down solid waste and effectively treat wastewater without needing to be connected to a city sewer system. Which type of septic system you need will depend on characteristics of your property like how high the bedrock is or groundwater table is. Different types of systems come at different costs to install.

The Potomac, MD homeowners’ guide to septic tank services

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