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

Avatar for Dynamic Plumbing LLC
Dynamic Plumbing LLC
5.0(
12
)
Septic System - Repair

Serving Lakeside, MT and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

We pride ourselves on professionalism and delivering complete homeowner satisfaction on every job. As a veteran-owned and operated company, we believe in doing the job right the first time and standing behind our work. We never leave a job unfinished or a homeowner less than 100% satisfied with our level of service. Call today to schedule reliable, high-quality plumbing you can trust.

Boiler installation
Boiler installation
Boiler installation
Boiler installation
25 neighbors recently requested a quote
Avatar for Rocking MT Excavation LLC
Rocking MT Excavation LLC
5.0(
6
)
Septic System - Install or ReplaceSeptic System - Repair

Serving Lakeside, MT and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

"We hired Rocking MT to replace the holding tank on our septic system. Stephen did an excellent job. He is a very skilled contractor who worked through several obstacles while communicating with us all along the way. The quality of his work was outstanding. He left the job site very clean. I would contract with him again in a heartbeat. His quote was reasonable and the final price was very close to what he quoted."
General
Gold Mine
General
General
General

+54

Response time1 day
Response rate87%
Recommended by100%of homeowners
Avatar for T5 Services, LLC
T5 Services, LLC
4.3(
43
)
Septic System - Install or Replace

Serving Lakeside, MT and surrounding areas

In business since 2018

Free estimates

Small jobs welcome

We take great pride in our experience, expertise, quality, and customer service, that we provide to meet the consumer's needs. It is our mission, to provide excellent workmanship and complete customer satisfaction, from start to completion of a project. In order 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.

T5 Gravel LLC
T5 Gravel LLC
T5 Gravel LLC
T5 Gravel LLC
T5 Gravel LLC

+26

Response time1 day
Recommended by94%of homeowners
Western Earthworks
4.3(
4
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Lakeside, MT and surrounding areas

In business since 2020

Free estimates

Credit card accepted

Western Earthworks, proudly serves our customers with pride, integrity, and attention to the details that matter most to you. This is one of the many things that set us apart from the rest. We are locally owned and operated.

Response time1 day
Recommended by75%of homeowners
Avatar for Choice Home Warranty
Choice Home Warranty
4.0(
5,678
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Lakeside, MT and surrounding areas

In business since 2008

Emergency services offered

Credit card accepted

"I specified that it was a tankless water heater, yet not surprisingly I was referred to a plumber who didn't know anything about tankless heaters, resulting in a waste of a couple of days. The second person did know about them, and so far the repair is working (fingers crossed). I wish CHW would pay attention to the details in my claim."
Recommended by81%of homeowners
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Lakeside, MT and surrounding areas

In business since 1971

Credit card accepted

"The technician emptied the freezer, which was in the basement, to work on the part that needed repair. Then he neglected to put anything back into the freezer, including a turkey I had bought for Christmas and a rack of ribs. Two days after he left, I went out of town for two weeks. The turkey actually exploded and spewed its liquid all over everything, which had to be discarded. I let AHS know and they couldn't even bother to call me or follow up on this. I'm considering not renewing my contract with them because of the quality (or lack thereof) of many of the providers they send."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

Recommended by65%of homeowners
Advanced Septic Design & Maintenance, LLC
New to Angi
Septic System - Repair

Serving Lakeside, MT and surrounding areas

In business since 2014

Free estimates

Emergency services offered

At Advanced Septic Design & Maintenance, we take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order 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.

Response time1 day
Weaver Excavation & Septic, Inc.
5.0(
1
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Lakeside, MT and surrounding areas

In business since 2012

Free estimates

Credit card accepted

At Weaver Excavating & Septic, Inc.,we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! \n \n

Response time5 hrs
Recommended by100%of homeowners
DAIRYLAND DIRTWORKS LLC
5.0(
1
)
Septic System - RepairSeptic System - Repair - For Business

Serving Lakeside, MT and surrounding areas

In business since 2020

Free estimates

Dairyland MX is committed to excellence in every aspect of our business. We uphold a \nstandard of integrity bound by fairness, honesty and personal responsibility. Our distinction is \nthe quality of service we bring to our customers. Accurate knowledge of our trade combined \nwith ability is what makes us true professionals. Above all, we are watchful of our customer's \ninterests, and make their concerns the basis of our business.

Response time6 hrs
Recommended by100%of homeowners
Showing 1-10 of 12
Septic Tanks FAQs, answered by experts

When a septic tank is full, it needs to be professionally pumped. The average cost of a one-time septic tank pump is about $400, or $0.30 per gallon. If your septic tank is full, you may notice that you have issues flushing your toilet, pipes are draining very slowly, or you have a sewage smell lingering in your home or yard.

A properly installed and maintained septic drain field (also known as a leach field) can last up to 50 years, though the average is around 20 years. However, factors like poor soil conditions, heavy usage, or improper maintenance can significantly shorten its lifespan to 15-20 years.

To extend the life of your drain field:

  • Schedule Regular Inspections: Have the entire septic system, including the drain field, inspected every two to five years to catch problems early.

  • Protect the Area: Avoid driving heavy vehicles or placing heavy structures over the drain field. Plant only grass or other lightweight vegetation with shallow roots over the area.

  • Maintain the Septic Tank: Proper care of the septic tank, including regular pumping and avoiding harmful chemicals, prevents strain on the drain field.

Be aware of signs of failure, such as strange odors, standing water, or unusually lush grass over the field, which indicate your system may need professional attention.

The easiest thing you can do to prolong the life of your septic system is to adopt septic-safe practices. This includes not flushing non-biodegradable items, chemicals, or excessive grease down drains and scheduling regular septic tank pumping to prevent buildup. It’s also important to fix plumbing leaks promptly and to practice water conservation to avoid overloading the system. To maintain your drain field, avoid heavy vehicle traffic and plant shallow-rooted vegetation in the area. Most importantly, invest in routine inspections and maintenance to detect and address issues early.

Most septic tanks can handle two to three loads of laundry per day, or a weekly total of between seven and 10 loads. Although septic systems do require homeowners to be somewhat careful with their plumbing systems—for instance, it’s not a good idea to flush a bunch of toilet paper all at once—they can still handle fairly heavy use.

Conventional anaerobic septic systems are the most cost-effective and least expensive type, with installation costs typically ranging from $3,000 to $8,000. For comparison, sand filter systems cost between $7,000 and $18,000, while mound systems are the most expensive at $10,000 to $20,000. Several factors influence the final price. The tank material is a key consideration; plastic tanks are the most budget-friendly option, starting around $2,900, but concrete and fiberglass tanks offer greater durability and longer life spans at a higher cost. The size of the tank also affects the price. For example, a 1,000-gallon tank costs between $900 and $1,500, whereas a larger 1,500-gallon tank costs $1,500 to $2,500.

The Lakeside, MT homeowners’ guide to septic tank services

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