Top-rated septic tank pros.

Get matched with top septic tank pros in Thornton, CO

There are 5 highly-rated local septic tank pros.

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    Average homeowner rating
  • Verified reviews icon39
    Verified septic tank services reviews

Find Septic tank pros in Thornton

Avatar for All American Drain Cleaning

All American Drain Cleaning

4.46(
24
)
Approved Pro

All American Drain Cleaning

4.46(
24
)
Approved Pro
Customers say: Super punctual
38 local quotes requested
Free onsite estimate

Looking for reliable drain cleaning and sewer repair services in Denver? Look no further! All American Drain Cleaning is here to help. Our experienced team is dedicated to providing top-notch service to homeowners in the Denver Metro area. Contact us today for all your drain cleaning needs.

"This company has been our "go to" business for all of our plumbing issues for years, and just yesterday (July 16) they replaced 10 feet of our sewer line. The crew was extremely gracious, worked well as a team, and took extra care to not damage our backyard. And when the job was done, they took more time to restore our landscaping so that you can't even tell a backhoe was in our backyard! My wife and I highly recommend this company!"

Tim B on July 2025

Looking for reliable drain cleaning and sewer repair services in Denver? Look no further! All American Drain Cleaning is here to help. Our experienced team is dedicated to providing top-notch service to homeowners in the Denver Metro area. Contact us today for all your drain cleaning needs.

"This company has been our "go to" business for all of our plumbing issues for years, and just yesterday (July 16) they replaced 10 feet of our sewer line. The crew was extremely gracious, worked well as a team, and took extra care to not damage our backyard. And when the job was done, they took more time to restore our landscaping so that you can't even tell a backhoe was in our backyard! My wife and I highly recommend this company!"

Tim B on July 2025


Four Seasons Landscaping Company

New on AngiNew on Angi
Approved Pro

Four Seasons Landscaping Company

New on AngiNew on Angi
Approved Pro
6 years of experience
Free onsite estimate

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! Book with us online or feel free to give us a call today!

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! Book with us online or feel free to give us a call today!


Avatar for Crystal Clear Drains, LLC

Crystal Clear Drains, LLC

5.00(
5
)
Approved Pro

Crystal Clear Drains, LLC

5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

Here at Crystal Clear Drains, LLC we sustain our business on quality and integrity. We are experts in our trade and our commitment to quality from beginning to end of your project. We look forward to earning your business. Call us anytime with any questions you may have. Thanks for your time and have a great day.

"They were the first to respond and I was able to get an appointment for the next working day. John came right on time and did a thorough diagnosis , explaining why my kitchen drain got clogged. He snaked my drain and it works perfectly now. He also gave me some good advice on how to keep my drain clear. I would recommend this business to any homeowner and will use them again!"

Mary B on November 2020

Here at Crystal Clear Drains, LLC we sustain our business on quality and integrity. We are experts in our trade and our commitment to quality from beginning to end of your project. We look forward to earning your business. Call us anytime with any questions you may have. Thanks for your time and have a great day.

"They were the first to respond and I was able to get an appointment for the next working day. John came right on time and did a thorough diagnosis , explaining why my kitchen drain got clogged. He snaked my drain and it works perfectly now. He also gave me some good advice on how to keep my drain clear. I would recommend this business to any homeowner and will use them again!"

Mary B on November 2020


Avatar for Colorado Paradise Builders, LLC

Colorado Paradise Builders, LLC

5.00(
9
)
Approved Pro

Colorado Paradise Builders, LLC

5.00(
9
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
28 years of experience

Colorado Paradise Builders, 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 20 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!

"Francisco Garcia did an excellent job finishing our basement. The work quality is excellent. The communication and flexibility throughout the project was excellent. The project finished on time within budget with zero surprises. Any concerns that arose were addressed expeditiously and professionally. I highly recommend Colorado Paradise Builders for your next project. The building inspections were coordinated by Colorado Paradise Builders and passed easily. We learned while talking to the inspectors that we had a gift by using Francisco as a general contractor. They mentioned other people in the business may not provide the level of customer service and professionalism which Colorado Paradise Builders demonstrated on our basement finishing project. I could not be more enthusiastic with a recommendation."

Jeff B on February 2023

Colorado Paradise Builders, 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 20 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!

"Francisco Garcia did an excellent job finishing our basement. The work quality is excellent. The communication and flexibility throughout the project was excellent. The project finished on time within budget with zero surprises. Any concerns that arose were addressed expeditiously and professionally. I highly recommend Colorado Paradise Builders for your next project. The building inspections were coordinated by Colorado Paradise Builders and passed easily. We learned while talking to the inspectors that we had a gift by using Francisco as a general contractor. They mentioned other people in the business may not provide the level of customer service and professionalism which Colorado Paradise Builders demonstrated on our basement finishing project. I could not be more enthusiastic with a recommendation."

Jeff B on February 2023


Avatar for Afford-A-Rooter

Afford-A-Rooter

4.70(
119
)
Approved Pro

Afford-A-Rooter

4.70(
119
)
Approved Pro
Customers say: Quick response
89 local quotes requested
22 years of experience

Locally owned plumbing company offering quality plumbing and drain cleaning at an affordable price. Second generation plumber serving families and businesses in the Denver metro area. Master Plumber's License, Colorado State Plumbing Contractors License, fully insured. Member BBB with "A" Rating. Available 24/7.

"Jason Dodge did a great job. Not only did he snake the drain in no time at all but he noticed the hot and cold water were reversed on my sink faucet and in 3 minutes he corrected it no charge! He couldn't have been nicer. I was only charged $100. for the whole thing. they have definitely become my go-to plumber!"

Carol B on November 2020

Locally owned plumbing company offering quality plumbing and drain cleaning at an affordable price. Second generation plumber serving families and businesses in the Denver metro area. Master Plumber's License, Colorado State Plumbing Contractors License, fully insured. Member BBB with "A" Rating. Available 24/7.

"Jason Dodge did a great job. Not only did he snake the drain in no time at all but he noticed the hot and cold water were reversed on my sink faucet and in 3 minutes he corrected it no charge! He couldn't have been nicer. I was only charged $100. for the whole thing. they have definitely become my go-to plumber!"

Carol B on November 2020


Avatar for Doone Brothers Sewer and Septic Services, LLC

Doone Brothers Sewer and Septic Services, LLC

5.00(
7
)
Approved Pro

Doone Brothers Sewer and Septic Services, LLC

5.00(
7
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 local quotes requested

With over 10 years of experience in the septic system industry, we are the experts you need to take care of your home or business. We handle everything from new septic installs to repair work. We will treat your home as we would treat our own. Give Doone Brothers Sewer and Septic Services, LLC, a call today, we look forward to working with you!

"I highly recommend Seamus, Kellen, and their team at Doone Brothers. They did my septic as well as my full site excavation/grading/driveway project. My site is very steep and challenging. I found them to be hardworking and fair. They went above and beyond with their communication and effort on my project and Iâ m super grateful to them for the work they did."

Carissa C on September 2020

With over 10 years of experience in the septic system industry, we are the experts you need to take care of your home or business. We handle everything from new septic installs to repair work. We will treat your home as we would treat our own. Give Doone Brothers Sewer and Septic Services, LLC, a call today, we look forward to working with you!

"I highly recommend Seamus, Kellen, and their team at Doone Brothers. They did my septic as well as my full site excavation/grading/driveway project. My site is very steep and challenging. I found them to be hardworking and fair. They went above and beyond with their communication and effort on my project and Iâ m super grateful to them for the work they did."

Carissa C on September 2020


Tipping Hat Plumbing Heating & Electric, LLC**

New on AngiNew on Angi
Approved Pro

Tipping Hat Plumbing Heating & Electric, LLC**

New on AngiNew on Angi
Approved Pro
25 years of experience
Free onsite estimate

Tipping Hat Plumbing, Heating & Electric, is a locally family owned and operated business serving the Denver Metro area and surrounding counties! We take pride in offering a range of services, including heating, plumbing, electrical, as well as drains and sewers. Our company thrives on getting you the very best technicians, competitive financing options, robust warranties, all while respecting your time and your home. Our mission is simple: to knock your socks off with exceptional service, every time we are in your home. Why is our company called Tipping Hat? It's more than just our namesake. When we tip our hat to you, it symbolizes the utmost respect and appreciation we hold for our customers. Just as one would tip their hat as a gesture of respect, we strive to go the extra mile to provide exceptional service, quality products, and unwavering support to our customers.

Tipping Hat Plumbing, Heating & Electric, is a locally family owned and operated business serving the Denver Metro area and surrounding counties! We take pride in offering a range of services, including heating, plumbing, electrical, as well as drains and sewers. Our company thrives on getting you the very best technicians, competitive financing options, robust warranties, all while respecting your time and your home. Our mission is simple: to knock your socks off with exceptional service, every time we are in your home. Why is our company called Tipping Hat? It's more than just our namesake. When we tip our hat to you, it symbolizes the utmost respect and appreciation we hold for our customers. Just as one would tip their hat as a gesture of respect, we strive to go the extra mile to provide exceptional service, quality products, and unwavering support to our customers.


Avatar for Tipping Hat Plumbing, Heating & Electric

Tipping Hat Plumbing, Heating & Electric

4.40(
624
)
Approved Pro

Tipping Hat Plumbing, Heating & Electric

4.40(
624
)
Approved Pro
Customers say: Quality work
890 local quotes requested
25 years of experience

Tipping Hat Plumbing, Heating & Electric, is a locally family owned and operated business serving the Denver Metro area and surrounding counties! We take pride in offering a range of services, including heating, plumbing, electrical, as well as drains and sewers. Our company thrives on getting you the very best technicians, competitive financing options, robust warranties, all while respecting your time and your home. Our mission is simple: to knock your socks off with exceptional service, every time we are in your home. Why is our company called Tipping Hat? It's more than just our namesake. When we tip our hat to you, it symbolizes the utmost respect and appreciation we hold for our customers. Just as one would tip their hat as a gesture of respect, we strive to go the extra mile to provide exceptional service, quality products, and unwavering support to our customers.

"Professional and efficient "

Christopher L on November 2025

Tipping Hat Plumbing, Heating & Electric, is a locally family owned and operated business serving the Denver Metro area and surrounding counties! We take pride in offering a range of services, including heating, plumbing, electrical, as well as drains and sewers. Our company thrives on getting you the very best technicians, competitive financing options, robust warranties, all while respecting your time and your home. Our mission is simple: to knock your socks off with exceptional service, every time we are in your home. Why is our company called Tipping Hat? It's more than just our namesake. When we tip our hat to you, it symbolizes the utmost respect and appreciation we hold for our customers. Just as one would tip their hat as a gesture of respect, we strive to go the extra mile to provide exceptional service, quality products, and unwavering support to our customers.

"Professional and efficient "

Christopher L on November 2025


Avatar for Peak Plumbing & Drain Repair, LLC

Peak Plumbing & Drain Repair, LLC

4.88(
56
)
Approved Pro

Peak Plumbing & Drain Repair, LLC

4.88(
56
)
Approved Pro
Super Service Award
Customers say: True professional
94 local quotes requested
6 years of experience

With over 10 years of experience the industry, we are the experts you need to take care of your home or business. We handle everything from drain cleaning to excavating, and plumbing. We will treat your home as we would treat our own. Give Peak Plumbing & Drain Repair a call today, we look forward to working with you!

"Excellent "

Belden S on October 2025

With over 10 years of experience the industry, we are the experts you need to take care of your home or business. We handle everything from drain cleaning to excavating, and plumbing. We will treat your home as we would treat our own. Give Peak Plumbing & Drain Repair a call today, we look forward to working with you!

"Excellent "

Belden S on October 2025


Silverline Landscape & Excavation, LLC

4.82(
14
)
Approved Pro

Silverline Landscape & Excavation, LLC

4.82(
14
)
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
65 local quotes requested

We have been proudly serving the local area since 2018, bringing over 10 years of experience to Wellington and the surrounding areas. We promise to provide high quality work to every homeowner that we work with, taking pride in each project that we complete. Call today to schedule your appointment for reliable service. You will not regret your decision to work with us!

"Tanner and his crew were professional and thorough. They took care to minimize the impact of having a small loader in my yard, and rehung the gate to the back yard better than it was before. Well done and would recommend."

Linda K on August 2023

We have been proudly serving the local area since 2018, bringing over 10 years of experience to Wellington and the surrounding areas. We promise to provide high quality work to every homeowner that we work with, taking pride in each project that we complete. Call today to schedule your appointment for reliable service. You will not regret your decision to work with us!

"Tanner and his crew were professional and thorough. They took care to minimize the impact of having a small loader in my yard, and rehung the gate to the back yard better than it was before. Well done and would recommend."

Linda K on August 2023

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Septic Tanks questions, answered by experts

There are many reasons you may want to extend the depth of an existing well or drill a new, deeper well on your property. A deeper well can tap cleaner water sources—shallow water may contain more contaminants. With a deeper well, you’ll also have an easier time reaching the water table depth (the level at which underground water is found) and can get past tricky soil conditions. 

Plus, if your local building code requires a minimum well depth for safety and environmental standards, you’ll meet the code by digging a deeper well in the first place.

Expect to take at least a day to drill your own well by hand. For a 500-foot well, this could take even longer, depending on the makeup of the soil and the terrain you are drilling through. Other factors include your physical strength and overall fitness level and the weather conditions you’re working in.

Cisterns can be used as septic tanks, but septic tanks can’t be used as cisterns. This is because cisterns need to meet FDA standards for drinking water, but septic tanks aren’t required to meet those standards since they are only used for wastewater.

Bladder and diaphragm well pressure tanks are usually pre-charged at the factory. Even so, it’s important to check the air pressure in the tank using a tire pressure gauge on the relief valve. The instruction manual usually calls for 28 psi. Use a hand pump to add more air or release some air from the tank to reach the desired number. Check the pressure periodically to see if you need to add more air to the tank.

Yes, you can pump a septic tank too much. The ideal pumping schedule varies based on capacity, water usage, and household size. If you pump the septic tank more frequently than your recommended pumping schedule, the beneficial bacteria can leach into the drain field, causing an imbalance and solid waste build-up.

The Thornton, CO homeowners’ guide to septic tank services

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

What do you need done? We’ll find top pros.
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