Top-rated septic system installers and replacers.

Get matched with top septic system installers and replacers in Rochester, 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 Rochester

Kacena Site Work Support Services, LLC
5.0(
29
)

Serving Rochester, NH and surrounding areas

Approved

In business since 2017

Free estimates

Small jobs welcome

"We've been in our house for over 35 years and recently had a fair amount of work done. by Darryl Ames at Kacena Siteworks. He replaced our septic system, took out a number of giant tree stumps, resurfaced a huge garden and excavated big holes in ledge for a large fence needing to be replaced. From the very first contact he's been completely responsive, personable, reliable, diligent and exacting in his work. He's a very skilled workman, is very reasonably priced, and a pleasure to deal with. We'd highly recommend him to anyone wanting this kind of site work to be done. Thom and Susan Lager Eliot, Me."
Response time12 hrs
10 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
Avatar for Septic Designs of NH, LLC
Septic Designs of NH, LLC
4.8(
25
)

Serving Rochester, NH and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"They came to inspect the Septic for home buying .They explain the system and how it works ,so I could understand , showing me the cleanout and D Box area . After this they coverd the two holes and left it like they found it. They both are Pro s and I will use them again "
Septic Inspection
Leach Field
Septic System Distribution Box
Septic Camera
Septic Pipe

+43

Response time8 hrs
15 neighbors recently requested a quote
Recommended by96%of homeowners
Request Quote
Avatar for Sewer Surgeons LLC
Sewer Surgeons LLC
5.0(
8
)

Serving Rochester, NH and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

We pride our company on reliability, great communication, \nintegrity, and quality work. We are experts in our trade and will do our best \nto keep you as educated as we can on your particular task or project. We are locally owned and operated. Give us a call today, we look forward to earning your business!\n

Septic Repairs
Septic Repairs
Septic Repairs
3 neighbors recently requested a quote
Request Quote
Avatar for Brannan Construction, LLC
Brannan Construction, LLC
5.0(
1
)

Serving Rochester, NH and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"I hired Ed to do a new septic design for me. His price was reasonable, and he provided a quality design. I highly recommend him!"
Response time10 hrs
Recommended by100%of homeowners
Request Quote
Roadway Excavators Inc.
5.0(
2
)

Serving Rochester, NH and surrounding areas

Approved

In business since 1996

Free estimates

Offers commercial services

"Replaced leech field- he did an excellent job removing my old leech field and replacing it with a better system. From the time I entered the job in homeadvisor (approx 8am) I was called back before noon. We scheduled a site review later that day. From the time I selected Roadway, there was constant progress. Even when the permits were in progress, they were in constant contact to let me know what was going on. When the permits were in order, they worked nonstop until the job was done. Their work was excellent, prompt and neat. Highly recommend."
Response time6 hrs
9 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
FAQs for septic system installation and replacement projects in Rochester, NH

The smallest standard septic system uses a 500-gallon tank, which costs between $875 and $1,150 installed. This size works well for single-occupant dwellings with minimal wastewater production. However, many local regulations specify minimum tank sizes, so check with your building department before committing to this compact option. Some jurisdictions require at least 750 gallons regardless of home size to ensure adequate waste processing capacity.

The installation timeline varies based on site conditions, permit processing, and contractor schedules. The process includes obtaining permits, conducting soil tests, excavation, tank placement, leach field construction, and final connections. Weather conditions, soil challenges, and inspection scheduling can all affect the overall timeline. It's wise to begin planning well in advance of when you need the system operational.

The most economical approach is to install a conventional anaerobic system with a plastic tank. To minimize costs while maintaining legality, obtain multiple quotes from licensed installers, consider scheduling during their slower seasons, and handle basic site preparation yourself. Never skip permits or required testing to save money—illegal installations can result in significant fines and mandatory removal, ultimately costing far more than doing it right initially.

Regular pumping helps prevent system failures and extends operational life. Most small systems require pumping every three to five years, though frequency depends on household size and usage patterns. Pumping services cost between $290 and $530, making this maintenance expense relatively minor compared to potential repair costs ranging from $500 to $2,600 for neglected systems. Establishing a regular maintenance schedule based on your installer's recommendations helps avoid costly emergency services.

The Rochester, 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