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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon78
    Verified septic tank services reviews

Top-Rated Septic tank pros in Gaithersburg - 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 Gaithersburg, 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 Gaithersburg, 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 Gaithersburg, 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 Professional lawns
Professional lawns
5.0(
20
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Gaithersburg, MD and surrounding areas

In business since 2009

Free estimates

Emergency services offered

We are a locally owned plumbing installation and service company. We do not accept anything but top level service and professionalism from our employees and as a customer you will experience that first hand. From water heater replacement and clogged drains or just periodic maintenance and testing to commercial chiller installations we have extensive background in all aspects of the plumbing and gas industry to handle whatever you need including private well and septic needs. Our lead technician has held his master plumbing and gas license since 2009 and personally oversees all jobs. Licensed to operate in almost all 50 states, we are ready to help you with all you plumbing and gas fitting needs. Please ask us about out Customer Referral Discount.

Fusion Car Wash
back of the hotel shows the qty of rooms
Main Street view of the hotel.
George Washington University Hospital
Fusion Car Wash

+26

Recommended by100%of homeowners
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 Gaithersburg, MD and surrounding areas

In business since 1977

Free estimates

Emergency services offered

"This was not an emergency repair, we were fortunate to be able to schedule the replacement about a week in advance. Heil sent an estimator to look at the space and make a recommendation. We originally wanted a Hybrid system but they advised against it given the space and need to collect/vent moisture. We selected a 75 gallon electric water heater. On the scheduled day, They were on time, removed the old water hearter and installed the new one - professional and courteous the whole time. Unfortunately, the new heater leaked the same day. They returned and made a temporary patch until they could return the next day with a replacement part. They returned, replaced the part and after they left we found that the tank leaked again in another place. They returned the next day and before we could insist that we wanted a different tank (clearly an out of the box failure on this one) they said they would replace the tank which they did. Our first, second and third experiences with Heil were all great with customer service and technical expertise. The inconvenience of multiple extra days without hot water and having to be there for four visits was unexpected and unfortunate however Heil responded correctly and made it right. You can get the measure of a company not only when things go right but also how they respond when things go wrong. We would use them again."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

Recommended by96%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 Gaithersburg, 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

Before starting septic tank service in Gaithersburg, confirm permit requirements and review any neighborhood restrictions. Arrange for utility line marking to prevent accidental damage. Check your property’s soil type and drainage, especially if you have mature landscaping or tight access. Gather past septic inspection reports and system diagrams, and plan work for drier months to minimize weather-related delays.

Helpful?

In Gaithersburg, septic tank service can impact your well water, sump pump, and landscaping, especially if your property has clay-rich soil or mature trees. Heavy equipment may disturb underground utility lines or cause foundation shifts in older homes. Before starting, review your property layout and consider how septic pumping or repairs might influence drainage patterns and nearby water management systems.

Helpful?

In Gaithersburg, you’ll find septic contractors specializing in pumping, septic inspection, and system repairs. Some focus on installing new tanks or alternative systems for properties with high water tables. Others handle drain field restoration or emergency septic repairs. Environmental consultants are also available to address unique soil or groundwater challenges common in the area.

Helpful?

In Gaithersburg, septic pumping or routine septic inspection typically takes 2-4 hours, while minor repairs may require a full day. Larger projects, such as tank replacement or new drain field installation, can extend from several days to a few weeks, depending on weather and soil conditions. Emergency septic services are available, but permanent repairs still follow standard timelines.

Helpful?

In Gaithersburg, persistent soggy patches, foul odors near the drain field, or lush grass over the septic area often signal past septic tank service issues. Slow drains, gurgling toilets, or sewage backups—especially after heavy rain—are warning signs. If you lack septic inspection records or notice work was done without permits, it’s wise to schedule a professional evaluation.

Helpful?

The Gaithersburg, MD homeowners’ guide to septic tank services

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