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TRUSTED BY POTOMAC, MD HOMEOWNERS

  • 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

"I requested a quote from five companies, two of which responded. Drain Pro Services was the second to respond and the representative offered a flat fee for the service for Angie's List members. The representative indicated that he could be to my house in thirty minutes. I accepted and, indeed, the representative (Rep) arrived within thirty minutes. He was there for over two hours clearing my drain. He completed the job and we are very happy with his work."
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

"The actual replacement was pretty straight forward, but because the codes have changed for normal W/H replacements in our area, which requires an expansion tank and also the new w/h's are now somewhat taller than prior models, they had to do some modifications to the venting. But they handled it professionally, and did exceptionally nice work. Its good to see people take pride in the work they perform. I would definitely call them again when/if the need is required."
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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
Mclean Septic Services LLC
4.6(
10
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Potomac, MD and surrounding areas

Emergency services offered

"McLean showed up in the emergency when everybody else couldn’t come out for a week or more. He cares about the clientele saying, it needs to be done. Would definitely recommend to anyone who needs excellent service, especially the emergency kind. Thank you!"
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+98

Recommended by100%of homeowners
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Septic Tanks FAQs, answered by experts

According to the Environmental Protection Agency (EPA), septic tanks must be located a decent distance from places subject to flooding or surface ponding. Additionally, septic tanks should be installed on level ground so that the waste can properly settle in the tank. Most tanks are located 10 to 20 feet away from the home. More specific requirements vary by location, so call a local septic pro or your local health department for more information.

The ideal depth of a septic drain field is 18 to 36 inches below the surface. The trenches must be deep enough to allow proper wastewater distribution and filtration while remaining shallow enough for oxygen to reach the soil, promoting bacterial activity that helps break down contaminants. In areas with high groundwater or poor drainage, shallower systems like mound drain fields may be required.

If you aren’t sure if you have a septic tank or a cesspit, you can check your property records or inspect your drainage system. A septic tank has an outlet pipe that allows liquid to drain into a soakaway or drain field, while a cesspit is a sealed tank that requires frequent emptying. If you notice a manhole cover and no nearby drainage field, it’s likely a cesspit. Signs like slow drainage or a frequent need for pumping can also provide clues. A professional inspection is the easiest way to confirm if your home runs on a septic tank or cesspit.

Although cesspits may be necessary depending on your main sewage system access or nearby soil quality, they carry a few drawbacks. Cesspools require regular emptying and have relatively high maintenance and pumping costs. Certain areas also disallow the use of cesspools and may require you to cover the cost of existing cesspools to be converted into septic tanks.

There are a lot of issues that can cause a septic tank to collapse. Those include failing to regularly pump or service it every three to five years, placing too much weight atop the system—by parking your car on top of it or because of a heavy snow buildup for instance—or because of structural damage done by overgrown tree roots.

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.