Top-rated septic system installers and replacers.

Get matched with top septic system installers and replacers in Concord, NH

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Septic system installers and replacers in Concord

Corriveau Construction Company

13 S Bow Rd
5.00(
5
)
•Approved Pro

Corriveau Construction Company

13 S Bow Rd
5.00(
5
)
•Approved Pro
Customers say: Quick response
28 local quotes requested
53 years of experience

Bob has been in business for 50 years. Started working on his own property and was disappointed in the quality of other people's work so he decided to go leave a career in electronics sales and into business himself.Became a career in building and developing.Built subdivisions.Built roads and all site work for new homes.

"This is the best construction pro I had in my life. If there is anyone's looking for the best construction crew this company is the best. I've never had anyone in my life as good as Corriveau construction company. They went beyond and above what I expected. "

Bill A on September 2025

Bob has been in business for 50 years. Started working on his own property and was disappointed in the quality of other people's work so he decided to go leave a career in electronics sales and into business himself.Became a career in building and developing.Built subdivisions.Built roads and all site work for new homes.

"This is the best construction pro I had in my life. If there is anyone's looking for the best construction crew this company is the best. I've never had anyone in my life as good as Corriveau construction company. They went beyond and above what I expected. "

Bill A on September 2025

Avatar for Holliston Sewer Service Inc

Holliston Sewer Service Inc

136 Fisher St
4.89(
57
)
•Approved Pro

Holliston Sewer Service Inc

136 Fisher St
4.89(
57
)
•Approved Pro
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
17 local quotes requested

• 2016 Super Service Award Winner - 3rd Consecutive Year! • Since 1954, Holliston Sewer Service Inc has remained a Locally Owned & Family Operated Sewer Service Company Inc providing Septic Services you can count on, including Septic Tank Pumping, Title 5 Inspections, & Septic Tank Repairs for 3 Generations! • We serve Residential, Commercial, & Industrial Clients • Your Best Choice for Septic Pumping Services • From Septic Tank Pumping to Leach Line Jetting, We are your best choice for a variety of Septic & Sewer Services • Let us provide you with quality service in the most cost effective manner • Call (508) 429-6262 to Schedule an Estimate or Appointment Today!

"Great and kind."

Nicolas D on January 2024

• 2016 Super Service Award Winner - 3rd Consecutive Year! • Since 1954, Holliston Sewer Service Inc has remained a Locally Owned & Family Operated Sewer Service Company Inc providing Septic Services you can count on, including Septic Tank Pumping, Title 5 Inspections, & Septic Tank Repairs for 3 Generations! • We serve Residential, Commercial, & Industrial Clients • Your Best Choice for Septic Pumping Services • From Septic Tank Pumping to Leach Line Jetting, We are your best choice for a variety of Septic & Sewer Services • Let us provide you with quality service in the most cost effective manner • Call (508) 429-6262 to Schedule an Estimate or Appointment Today!

"Great and kind."

Nicolas D on January 2024

Innovative Septic Solutions

40 Pasture Drive
4.59(
27
)
•Approved Pro

Innovative Septic Solutions

40 Pasture Drive
4.59(
27
)
•Approved Pro
Customers say: Quality work
17 local quotes requested
40 years of experience

Serving all of Hillsborough and the surrounding counties, the professionals at Innovative Septic Solutions are the go-to, full service septic designers and installers you can trust to get the job done right! Call now for a consultation!

"I was selling a 71 year old home and the inspection revealed a failing septic system. I had called another company as well as Bob snd had opted to use the other company which was local in Merrimack. Sadly I was told it would be 6 to 8 weeks. I could not wait that long since the house needed to be sold before winter. I called Bob and he began the same day! He explained he was also an engineer and could do the required septic design himself. He was able to have the entire job done in 2 weeks and we had a contract to sell before he finished. He was a delight to work with and I woukd recommend this company without any hesitation."

Betty F on October 2025

Serving all of Hillsborough and the surrounding counties, the professionals at Innovative Septic Solutions are the go-to, full service septic designers and installers you can trust to get the job done right! Call now for a consultation!

"I was selling a 71 year old home and the inspection revealed a failing septic system. I had called another company as well as Bob snd had opted to use the other company which was local in Merrimack. Sadly I was told it would be 6 to 8 weeks. I could not wait that long since the house needed to be sold before winter. I called Bob and he began the same day! He explained he was also an engineer and could do the required septic design himself. He was able to have the entire job done in 2 weeks and we had a contract to sell before he finished. He was a delight to work with and I woukd recommend this company without any hesitation."

Betty F on October 2025

H. K. White & Son, LLC

203 Towle Rd
5.00(
1
)
•Approved Pro

H. K. White & Son, LLC

203 Towle Rd
5.00(
1
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
65 years of experience

Welcome to H.K. White & Son, LLC! We are committed to exceeding your expectations. As experts, we will handle your needs with the high quality expertise that your home or business deserves. We offer competitive prices and customer satisfaction is our number one priority. Call us now!

"They were very approachable, and made me feel comfortable as a woman dealing with contractors. Very professional, and on time, even checking in when their day was done. I would say they went above and beyond."

Kathy Y on March 2019

Welcome to H.K. White & Son, LLC! We are committed to exceeding your expectations. As experts, we will handle your needs with the high quality expertise that your home or business deserves. We offer competitive prices and customer satisfaction is our number one priority. Call us now!

"They were very approachable, and made me feel comfortable as a woman dealing with contractors. Very professional, and on time, even checking in when their day was done. I would say they went above and beyond."

Kathy Y on March 2019

Granite State Sewer & Drain Cleaning Co

PO Box 313
4.92(
12
)
•Approved Pro

Granite State Sewer & Drain Cleaning Co

PO Box 313
4.92(
12
)
•Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
23 local quotes requested

Granite State Sewer & Drain Cleaning Co is your go-to plumbing and drain cleaning expert in New Hampshire. With our extensive experience and top-notch service, we stand out from the competition. Contact us today for all your plumbing needs! Additional DBAs - Granite State Sewer Pumps, Granite State Sewer & Drain Cleaning Inc.

"good job and reasonable pricing"

David S on September 2025

Granite State Sewer & Drain Cleaning Co is your go-to plumbing and drain cleaning expert in New Hampshire. With our extensive experience and top-notch service, we stand out from the competition. Contact us today for all your plumbing needs! Additional DBAs - Granite State Sewer Pumps, Granite State Sewer & Drain Cleaning Inc.

"good job and reasonable pricing"

David S on September 2025

Avatar for Clear Water Pump & Well Service, Inc.

Clear Water Pump & Well Service, Inc.

PO Box 6
4.49(
37
)
•Approved Pro

Clear Water Pump & Well Service, Inc.

PO Box 6
4.49(
37
)
•Approved Pro
Customers say: Quality work
325 local quotes requested
14 years of experience

Clear Water Pump & Well Service, Inc. is your trusted partner for all your well, water filtration and pump service needs in Massachusetts and Rhode Island. With over 15 years of experience, we are the leading experts in the industry. Our commitment is to deliver exceptional service without compromising on quality, all at an affordable price. We have extensive knowledge of the latest technology in the Water Well Industry in Massachusetts and beyond, and our services are available throughout the region. Contact us today and let us earn your business.

"Good job done."

John N on November 2024

Clear Water Pump & Well Service, Inc. is your trusted partner for all your well, water filtration and pump service needs in Massachusetts and Rhode Island. With over 15 years of experience, we are the leading experts in the industry. Our commitment is to deliver exceptional service without compromising on quality, all at an affordable price. We have extensive knowledge of the latest technology in the Water Well Industry in Massachusetts and beyond, and our services are available throughout the region. Contact us today and let us earn your business.

"Good job done."

John N on November 2024

Avatar for A Really Good Plumber

A Really Good Plumber

5 Elder Williams Rd
4.27(
11
)
•Approved Pro

A Really Good Plumber

5 Elder Williams Rd
4.27(
11
)
•Approved Pro
Customers say: Quality work
390 local quotes requested
18 years of experience

At A Really Good Plumber, we pride ourselves on providing our customers with reasonable pricing, quality workmanship, and professional service on every call. When you work with A Really Good Plumber, you know you are getting high quality products and exceptional service facilitated by cutting edge technology. Our certified technicians use this technology in all installations, and to diagnose, and repair existing problems. These services will ultimately benefit the ones you love by keeping you and your family comfortable and safe all year round.

"He was very observant of all the permissions needed for a gas water heater. I definitely would recommend them to anybody easy to talk to and great work."

Dave B on December 2024

At A Really Good Plumber, we pride ourselves on providing our customers with reasonable pricing, quality workmanship, and professional service on every call. When you work with A Really Good Plumber, you know you are getting high quality products and exceptional service facilitated by cutting edge technology. Our certified technicians use this technology in all installations, and to diagnose, and repair existing problems. These services will ultimately benefit the ones you love by keeping you and your family comfortable and safe all year round.

"He was very observant of all the permissions needed for a gas water heater. I definitely would recommend them to anybody easy to talk to and great work."

Dave B on December 2024

Avatar for Holliston Sewer Service Inc

Holliston Sewer Service Inc

136 Fisher St
4.89(
57
)

Holliston Sewer Service Inc

136 Fisher St
4.89(
57
)
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

• 2016 Super Service Award Winner - 3rd Consecutive Year! • Since 1954, Holliston Sewer Service Inc has remained a Locally Owned & Family Operated Sewer Service Company Inc providing Septic Services you can count on, including Septic Tank Pumping, Title 5 Inspections, & Septic Tank Repairs for 3 Generations! • We serve Residential, Commercial, & Industrial Clients • Your Best Choice for Septic Pumping Services • From Septic Tank Pumping to Leach Line Jetting, We are your best choice for a variety of Septic & Sewer Services • Let us provide you with quality service in the most cost effective manner • Call (508) 429-6262 to Schedule an Estimate or Appointment Today!

"Great and kind."

Nicolas D on January 2024

• 2016 Super Service Award Winner - 3rd Consecutive Year! • Since 1954, Holliston Sewer Service Inc has remained a Locally Owned & Family Operated Sewer Service Company Inc providing Septic Services you can count on, including Septic Tank Pumping, Title 5 Inspections, & Septic Tank Repairs for 3 Generations! • We serve Residential, Commercial, & Industrial Clients • Your Best Choice for Septic Pumping Services • From Septic Tank Pumping to Leach Line Jetting, We are your best choice for a variety of Septic & Sewer Services • Let us provide you with quality service in the most cost effective manner • Call (508) 429-6262 to Schedule an Estimate or Appointment Today!

"Great and kind."

Nicolas D on January 2024

Miller Environmental

608 Spring Street
No reviews yet

Miller Environmental

608 Spring Street
No reviews yet
28 years of experience

Family owned and operated

Family owned and operated

Carlton Plumbing & Heating

14 Carlton St
No reviews yet

Carlton Plumbing & Heating

14 Carlton St
No reviews yet
24 years of experience

Here at Carlton Plumbing & Heating, we are a 24 hour service! Call to make your appointment today!

Here at Carlton Plumbing & Heating, we are a 24 hour service! Call to make your appointment today!

...
Showing 1-10 of 485
FAQs for septic system installation and replacement projects in Concord, NH

Most septic system replacements require several days to complete, not including permitting and preparation time. The process begins with site assessment and testing, followed by excavation, component installation, and final inspection. Weather conditions, property accessibility, and inspection schedules can all affect your project timeline. Your contractor can provide a more specific estimate based on your property's unique characteristics.

Standard homeowners' insurance policies don't cover septic system replacement due to age or normal deterioration. Coverage may apply if damage results from specific covered events, but routine maintenance and eventual replacement are generally considered homeowner responsibilities. Review your policy details or speak with your insurance agent to understand your specific coverage limitations.

Look for multiple indicators such as slow-draining fixtures, unusual gurgling sounds in plumbing, sewage odors inside or outside your home, or wet spots in your yard. Unusually lush grass over the drain field area, frequent backups, or recurring repair needs might signal system failure. Addressing these warning signs promptly can prevent property damage and health hazards.

DIY septic installation is not recommended and may violate local regulations. Professional installation ensures compliance with health codes, proper design for your specific site conditions, and appropriate safety measures. The specialized equipment, technical knowledge, and permitting requirements make this a job best left to licensed professionals who can guarantee the system's safety and effectiveness.

With proper maintenance, including regular pumping, a drain field lasts 20 years. Various factors influence system longevity, including household size, water usage patterns, and soil conditions. Regular professional inspections can help determine when replacement becomes necessary. If your system requires increasingly frequent repairs, replacement might be more economical than continuing to address individual problems.

The Concord, NH homeowners’ guide to septic system installations and replacements

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

See all articles