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Find Septic system installers and replacers in Harwich

Avatar for JTC Contractors

JTC Contractors

5.00(
3
)
Approved Pro

JTC Contractors

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 years of experience

Generations of building new homes installing utilities and commercial buildings! Either building from start to finish or for all of your excavation needs from foundations, licensed title 5 septic installation, lot clearing, sewer connections and much more. Find out if you can switch your home to town sewer today and let us hook you into the town line and never worry about pumping or septic maintenance or costly failures ever again!! Give us a call 7743536401

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Alex Y on September 2018

Generations of building new homes installing utilities and commercial buildings! Either building from start to finish or for all of your excavation needs from foundations, licensed title 5 septic installation, lot clearing, sewer connections and much more. Find out if you can switch your home to town sewer today and let us hook you into the town line and never worry about pumping or septic maintenance or costly failures ever again!! Give us a call 7743536401

"null"

Alex Y on September 2018


Clifford Excavation

4.86(
7
)
Approved Pro

Clifford Excavation

4.86(
7
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
11 years of experience

Clifford Excavation, LLC, is a family owned and operated business operating in the Cape Cod area. Done right the first time is our company slogan that creates trust for the customer and ensures them that the task at hand will be done right the first time. If you need any paver work, grading, or building site preparation, make us your first choice! **We only provide installations for septic systems only, we do not provide pump outs or cleanings whatsoever **

"Within one week after initial contact our lot was cleared which included removal of 30 large stumps, graded & loaned entire property & installed 185ft stone driveway. Gary & Collin are professional, Knowledgeable & extremely easy to work with. I would highly recommend Clifford Excavation. Mary & Skip Eaton DENNIS MA"

mary e on February 2023

Clifford Excavation, LLC, is a family owned and operated business operating in the Cape Cod area. Done right the first time is our company slogan that creates trust for the customer and ensures them that the task at hand will be done right the first time. If you need any paver work, grading, or building site preparation, make us your first choice! **We only provide installations for septic systems only, we do not provide pump outs or cleanings whatsoever **

"Within one week after initial contact our lot was cleared which included removal of 30 large stumps, graded & loaned entire property & installed 185ft stone driveway. Gary & Collin are professional, Knowledgeable & extremely easy to work with. I would highly recommend Clifford Excavation. Mary & Skip Eaton DENNIS MA"

mary e on February 2023


Ruberti Construction, LLC

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Ruberti Construction, LLC

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
5 years of experience
Free onsite estimate

Ruberti Construction LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Ruberti Construction LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.


Avatar for TLH Excavation, Septic & Sewer Services

TLH Excavation, Septic & Sewer Services

5.00(
1
)
Approved Pro

TLH Excavation, Septic & Sewer Services

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
33 local quotes requested

TLH Excavation, Septic & Sewer Services is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. We're small enough to care. When you call us, we answer!

"Very prompt response. Appreciated the level of knowledge and courtesy."

Kathie B on July 2024

TLH Excavation, Septic & Sewer Services is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. We're small enough to care. When you call us, we answer!

"Very prompt response. Appreciated the level of knowledge and courtesy."

Kathie B on July 2024


Avatar for S.H. Dunford Construction and Excavation

S.H. Dunford Construction and Excavation

4.91(
11
)
Approved Pro

S.H. Dunford Construction and Excavation

4.91(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 years of experience

We are a locally owned cape cod business, owned and operated by native cape codder Sam Dunford. We have been in business since 2012 providing quality work at a competitive price. From septic systems and excavation, to landscape construction and hardscapes, S.H. Dunford is your one stop shop. Follow us on Facebook! Facebook.com/shdunford

"Sam was prompt, professional, detail oriented, very kind and quick. He was patient as we considered the scope of the project and drove me away from adding unnecessary scope (and cost, which would have been more money for him). He was extremely communicative, something I rarely see around the Cape and meticulous in his work and clean up. Believe me when I say I have high expectations that workers rarely meet - and Sam met them all."

Jen S on August 2022

We are a locally owned cape cod business, owned and operated by native cape codder Sam Dunford. We have been in business since 2012 providing quality work at a competitive price. From septic systems and excavation, to landscape construction and hardscapes, S.H. Dunford is your one stop shop. Follow us on Facebook! Facebook.com/shdunford

"Sam was prompt, professional, detail oriented, very kind and quick. He was patient as we considered the scope of the project and drove me away from adding unnecessary scope (and cost, which would have been more money for him). He was extremely communicative, something I rarely see around the Cape and meticulous in his work and clean up. Believe me when I say I have high expectations that workers rarely meet - and Sam met them all."

Jen S on August 2022


Avatar for A + D CONNECTIONS, LLC

A + D CONNECTIONS, LLC

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

A + D CONNECTIONS, LLC

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
1 years of experience
Free onsite estimate

**With nearly a decade of hands-on experience, A&D Connections has earned a reputation across Massachusetts for reliable, precision-driven excavation work. Proudly veteran-owned and operated, we bring discipline, integrity, and craftsmanship to every project — from septic system swaps and water main connections to full-scale excavation and site prep. Our team is dedicated to doing the job right the first time, with safety and efficiency at the core of everything we do. Whether it’s a residential or light commercial project, we deliver clean, professional results that stand the test of time. At A&D Connections, we’re not just moving earth — we’re building strong foundations for our clients and our community. Reliable. Honest. Mission-ready — that’s the A&D difference.**

**With nearly a decade of hands-on experience, A&D Connections has earned a reputation across Massachusetts for reliable, precision-driven excavation work. Proudly veteran-owned and operated, we bring discipline, integrity, and craftsmanship to every project — from septic system swaps and water main connections to full-scale excavation and site prep. Our team is dedicated to doing the job right the first time, with safety and efficiency at the core of everything we do. Whether it’s a residential or light commercial project, we deliver clean, professional results that stand the test of time. At A&D Connections, we’re not just moving earth — we’re building strong foundations for our clients and our community. Reliable. Honest. Mission-ready — that’s the A&D difference.**


Avatar for Schofield Environmental

Schofield Environmental

4.17(
9
)
Approved Pro

Schofield Environmental

4.17(
9
)
Approved Pro
Customers say: Quick response
27 years of experience
Free onsite estimate

At Alpha Environmental, we are very well versed in all available septic solutions for your project. We design and install the best septic systems to the highest standards. Whether we are repairing your current septic system or installing a new one, one thing is certain; nobody brings a higher level of professionalism into your home. We value quality and guarantee a pleasurable customer service experience. We look forward to serving you. Give us a call for a free estimate today!

"Dave is design/build - heck of a lot better than hiring multiple contractors! "

Harold M on April 2025

At Alpha Environmental, we are very well versed in all available septic solutions for your project. We design and install the best septic systems to the highest standards. Whether we are repairing your current septic system or installing a new one, one thing is certain; nobody brings a higher level of professionalism into your home. We value quality and guarantee a pleasurable customer service experience. We look forward to serving you. Give us a call for a free estimate today!

"Dave is design/build - heck of a lot better than hiring multiple contractors! "

Harold M on April 2025


Avatar for Coastal Paving

Coastal Paving

5.00(
10
)
Approved Pro

Coastal Paving

5.00(
10
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 local quotes requested

With 35 years of experience, we take great pride in our 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 the start to the 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.

"This company is awesome! I called them on Thursday, sent a deposit on Friday. They started the job on Tuesday and were done on Thursday. They had to rip up a circular driveway and put in a new one and a walkway. The did a fantastic job. I have 2 neighbors that are going to call them to do work for them! I called another paving company and they never returned my call. Coastal is as good as it gets!"

Steven S on August 2022

With 35 years of experience, we take great pride in our 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 the start to the 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.

"This company is awesome! I called them on Thursday, sent a deposit on Friday. They started the job on Tuesday and were done on Thursday. They had to rip up a circular driveway and put in a new one and a walkway. The did a fantastic job. I have 2 neighbors that are going to call them to do work for them! I called another paving company and they never returned my call. Coastal is as good as it gets!"

Steven S on August 2022


Avatar for LMH CONSTRUCTION GROUP LLC

LMH CONSTRUCTION GROUP LLC

4.82(
11
)
Approved Pro

LMH CONSTRUCTION GROUP LLC

4.82(
11
)
Approved Pro
Customers say: Quality work
15 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Let me start off by saying that these guys are great. They did my bathroom, kept everything clean, and anytime I had question or concern, they were quick to respond. I now will rehire them to do my basement and remodel my kitchen?"

Barbara S on October 2025

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Let me start off by saying that these guys are great. They did my bathroom, kept everything clean, and anytime I had question or concern, they were quick to respond. I now will rehire them to do my basement and remodel my kitchen?"

Barbara S on October 2025


Kester plumbing-heating-air conditioning

4.67(
9
)

Kester plumbing-heating-air conditioning

4.67(
9
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Kester Plumbing & Heating is a full service HVAC shop with 1-3 employees. All work is performed as quoted by our employees and we never utilize sub contractors. Costs are always determined by job. 10% Senior Discount provided.

Kester Plumbing & Heating is a full service HVAC shop with 1-3 employees. All work is performed as quoted by our employees and we never utilize sub contractors. Costs are always determined by job. 10% Senior Discount provided.

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FAQs for septic system installation and replacement projects in Harwich, MA

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 Harwich, MA 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.