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Verified Reviews for Septic Tank Service pros in Spearfish, SD

*The Angi rating for Septic Tank Service companies in Spearfish, SD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Septic Tank Service needs.

*The HomeAdvisor rating for Septic Tank Service companies in Spearfish, SD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Septic Tank Service needs.

Last update on May 22, 2026

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

Avatar for A&G Services
A&G Services
5.0(
3
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Spearfish, SD and surrounding areas

In business since 2022

Free estimates

Emergency services offered

A & G Services can offer a multitude of services. We can do general excavation, land clearing, dig basements, resurface driveways, install/fix septic systems, water leak repair, and even snow removal!

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+49

Recommended by100%of homeowners
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Avatar for Elite Excavation and Iron
Elite Excavation and Iron
5.0(
5
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Spearfish, SD and surrounding areas

In business since 2023

Free estimates

Emergency services offered

"Showed up when scheduled and complete the septic system install on time. Left the job site clean and well graded."
D-Box
New Septic Install
New Septic Install
Final product
Overview

+11

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Avatar for ERE,LLC
ERE,LLC
4.6(
8
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Spearfish, SD and surrounding areas

In business since 2019

Free estimates

Credit card accepted

We are dedicated to providing our clients with the very best in excavation and building site services. We specialize in residential and commercial services and take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction. \n

Retaining Walls
Retaining Walls
Retaining Walls
Retaining Walls
Retaining Walls

+64

Response time6 hrs
Response rate100%
Recommended by85%of homeowners
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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 Spearfish, SD 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."
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+2

Recommended by65%of homeowners
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Environmental Reclamation Excavation, LLC
5.0(
3
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Spearfish, SD and surrounding areas

In business since 2019

Free estimates

Credit card accepted

Environmental Reclamation Excavation, LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 2 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today! \n \n

Response time1 day
Recommended by100%of homeowners
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5th Generation Plumbing
New to Angi
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Spearfish, SD and surrounding areas

In business since 1997

Free estimates

Credit card accepted

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our major focus is on the quality our work and producing outstanding results. We are committed to creating a level of value unmatched by any of our competitors. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

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JMD Excavating
3.0(
2
)
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Spearfish, SD and surrounding areas

In business since 2003

Free estimates

At JMD Excavating, our company is based on the belief that our customers needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote.

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

Your septic tank naturally contains the good bacteria it needs, so you typically don't have to add more as the system produces them on its own. However, if you wish to replenish the bacteria, you can use natural methods. For example, you can add three rotten tomatoes to your garbage disposal or flush 1/4 ounce of active yeast down the toilet every three months. While store-bought septic enzymes and chemicals are available, many additives are unnecessary and may even harm your system. The most effective way to maintain a healthy bacterial balance is to avoid using chemical drain cleaners, which can kill the beneficial bacteria in your tank.

Neither system is necessarily better or worse than the other, but one of the two might be better for your needs. For example, anaerobic systems are less expensive than aerobic ones and don’t use power to run. On the other hand, aerobic septic systems don’t take up as much space and are typically more efficient than their anaerobic counterparts.

The efficacy of a drain field depends on a wide variety of factors, though a well-maintained one can last as long as 40 or 50 years. Of the different types of septic tanks on the market, concrete and plastic tanks tend to last the longest—upwards of 40 years if they’re pumped regularly—while steel tanks have a tendency to rust over time and may need to be replaced after 15 or 20 years.

It only takes a few days for a septic tank to fill with water after a pro has pumped it. This is completely normal, and the water is a vital part of your septic system’s wastewater treatment process. The water that fills your tank days after pumping is not the same as the tank being filled with waste. You shouldn’t have to pump your septic system more than once every three to five years unless you have a tank that’s too small for your home’s water output or there’s a problem with your leach field. 

While dry wells can be effective for managing rainwater, they have several disadvantages. They can become clogged with sediment, especially after large storms, which reduces their effectiveness and can be difficult to clean. Dry wells are also not suitable for all soil types; they will not function properly in soil with low permeability. Additionally, if a dry well is not large enough to handle the amount of rainfall in your area, it can overflow. For gravity-flow models, the water may disperse very slowly, depending on the well's depth and the soil's permeability.

The Spearfish, SD homeowners’ guide to septic tank services

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

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