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TRUSTED BY OLNEY, MD HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon36
    Verified septic tank services reviews

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

Avatar for R&E CHIEF SEPTIC LLC
R&E CHIEF SEPTIC LLC
4.8(
114
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Olney, MD and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Within a few hours of submitting my search in Angie's List for a company to empty my septic tank, R&E Chief Septic called to schedule the appointment and provide me with the cost. I was surprised at the quick response and immediately set up an appointment. They were on time and quickly went to work. I will definitely use them from now on!"
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+8

Response time1 day
Recommended by95%of homeowners
Avatar for Pohlman Plumbing Inc
Pohlman Plumbing Inc
4.4(
42
)
Septic System - Install or ReplaceSeptic System - RepairSeptic System - Repair - For Business

Serving Olney, MD and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Hired Pohlman to evaluate two natural gas tank water heaters in our home, one of which was unoperational. They suggested combi-boiler for our home in lieu of two tank water heaters. They did a great job and we are very pleased. Customer service is top notch, and I highly recommend Pohlman Plumbing."
Finished Shower
Finished Shower
Panoramic View
Vanity
Mid-replacement

+10

Response time8 hrs
Response rate97%
Recommended by86%of homeowners
Avatar for MCS Pumping
MCS Pumping
5.0(
3
)
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Olney, 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
Nando Fire Protection & Plumbing
New to Angi
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Olney, 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 Olney, 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 Olney, 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 Olney, 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
Avatar for Tri-County Pump Service, Inc.
Tri-County Pump Service, Inc.
4.4(
113
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Olney, MD and surrounding areas

In business since 1991

Free estimates

Emergency services offered

"We were having problems with our septic. 1 st we had the tank pumped. Continued to have problems with backing up. Zack and his helper came out and snaked the clean out pipe. Worked for a couple weeks backed up again. Bryan and his helper came out and snaked the pipe again and ran the camera in the pipe which showed tree roots clogging up the pipe. He then ran a root cutting tool in the pipe. As Bryan was doing all of this he explained everything he was doing and why. I was very impressed with his knowledge. He was excellent. He advised we need a crew to dig up the pipe to the tank. Jay and Cody came out and dug up the pipe and inlet access and found clog mixed with tree roots. They cleaned everything up and all is working. Thank all of you guys for your help. I would recommend all them !"
Recommended by70%of homeowners
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Septic Tanks FAQs, answered by experts

Some of the signs that could mean your water is contaminated, such as cloudiness or bubbliness, could also be non-problems that don’t affect your water’s potability. However, if your water smells or tastes strange, it’s a good idea to stop drinking it and test it immediately. If your well water is contaminated, the best way to discover that is to test it.

While abandoning a tank without treating it and following strict rules is illegal, there are several other ways to dispose of an old septic tank. One standard method is to pump out and crush the tank where it rests and bury it in the soil. Another is to remove it and transport it to a landfill. Finally, if abandonment is the best option, your contractor must pump out the tank and fill it with inert material, such as sand or concrete, depending on local regulations.

Septic systems typically require servicing every 3-5 years, but frequency varies according to household size and tank capacity.

A septic tank always has some amount of liquid in it—which should usually be 8 to 12 inches from the top of the tank. If the liquid level is higher than that or is overflowing the drainage pipe that leads out to the leach field, the tank may be too full and in need of pumping.

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.

The Olney, MD homeowners’ guide to septic tank services

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