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Best septic tank pros near Marshfield, MA

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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon34
    Verified septic tank services reviews

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

Avatar for Mankewich Contracting, Inc.
Mankewich Contracting, Inc.
5.0(
7
)
Septic System - RepairSeptic System - Install or ReplaceSeptic System - Install or Replace - For Business+1 more

Serving Marshfield, MA and surrounding areas

Approved

In business since 1993

Free estimates

Emergency services offered

"Fast, respectful, efficient, professional, and on budget. I would recommend Jaime and Mankewich contracting to anyone and everyone! We had a short timeline in order to provide occupancy to the buyer. Jaime and his excellent team had the septic system complete and fully compliant with the town in under a business week with minimal impact to landscaping! What else can I say they were nothing short of spectacular!"
Septic system install
Leaching  field build.
Spraying hydroseed.
Hydroseeding
Sewer pump install

+10

Response time7 hrs
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Septic Services LLC
Septic Services LLC
4.9(
11
)
Septic Tank - Clean or Pump OutSeptic System - RepairSeptic System - Repair - For Business+1 more

Serving Marshfield, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"Showed up and pumped my tank better than the last company did, the previous company made a big mess and didn't clean it up. He took pride in his work and by the look of his truck you could tell. Cleanest septic truck I ever seen. Extremely friendly and knowledgeable. I will be using Septic Services llc for all my septic and pumping needs for now on. Vary fair pricing also for my 1500 gallon tank in Middleboro"
Response time7 hrs
Response rate99%
1 neighbors recently requested a quote
Avatar for Schofield Environmental
Schofield Environmental
4.2(
9
)
Septic System - Install or Replace

Serving Marshfield, MA and surrounding areas

Approved

In business since 1999

Free estimates

Credit card accepted

"By Andrew v. Engineer Dave Schofield of Capstone displayed professionalism by turning a flawed design for our Sudbury septic system into one highly adaptive and functional. He was purposeful about doing the right thing even when not winning installation contract, execution of which he in in fact supervised. In a business which includes its share of uneven performers, Schofield’s competence is a stand-out."
Response time4 hrs
Response rate100%
Recommended by55%of homeowners
Avatar for P & L Custom Homes & Excavation LLC
P & L Custom Homes & Excavation LLC
5.0(
3
)
Septic System - Install or ReplaceSeptic System - Repair

Serving Marshfield, MA and surrounding areas

Approved

In business since 2022

Free estimates

"I just want to thank P&L Custom Homes & Excavation for the outstanding job they did clearing the land and handling all the excavation for my home build. Their team was professional, efficient, and easy to work with from start to finish. Everything was done right and on schedule, which made a huge difference in keeping the project moving smoothly. I really appreciate the hard work and would highly recommend them to anyone looking for quality site work."
Project
Project
Project
13 neighbors recently requested a quote
Avatar for J. Bean Excavation LLC
J. Bean Excavation LLC
5.0(
6
)
Septic System - Install or ReplaceSeptic System - RepairSeptic System - Repair - For Business

Serving Marshfield, MA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

J. Bean Excavation 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.

before
before
before
after
after

+29

17 neighbors recently requested a quote
Avatar for Brarmann Excavation & Septic Co.
Brarmann Excavation & Septic Co.
5.0(
4
)
Septic System - Install or Replace

Serving Marshfield, MA and surrounding areas

In business since 2009

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s Septic and title V needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. We will help the customer through out the process. 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. Specializing in all of the latest Septic designs. If a customer has a design we can install it or if a customer needs a design, we offer engineered plans and we take care of the project from start to finish. All of our staff is licensed and experienced in both excavation and septic. We also offer septic repairs, as well as camera inspection, making us your leading septic pros! \n -HOMEOWNERS ONLY PLEASE-

Driveway repairs
Existing driveway
New driveway
New driveway
New Walkway

+8

Response time10 mins
Response rate100%
Recommended by100%of homeowners
Avatar for Primos LLC
Primos LLC
5.0(
8
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Marshfield, MA and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Primos recently reconstructed our driveway and patio. The entire process of working with them was extremely satisfying and they exceeded our expectations. They are professional, customer-oriented, and thorough. I would highly recommend Primos and hope to work with them again in the future."
Recommended by100%of homeowners
Showing 1-10 of 47
Septic Tanks FAQs, answered by experts

The ideal depth of a septic drain field is 18 to 36 inches below the surface. The trenches must be deep enough to allow proper wastewater distribution and filtration while remaining shallow enough for oxygen to reach the soil, promoting bacterial activity that helps break down contaminants. In areas with high groundwater or poor drainage, shallower systems like mound drain fields may be required.

The pressure in a well pressure tank should be set 2 to 3 PSI below the pump's cut-on pressure. The cut-on pressure is the lower number in the pressure setting (e.g., the '30' in 30/50 PSI) and is the point at which the pump starts. The cut-out pressure is the higher number, where the pump stops.

For example:

  • If your pressure switch is set to 30/50 PSI, the tank pressure should be 27-28 PSI.

  • If your pressure switch is set to 40/60 PSI, the tank pressure should be 38 PSI.

Common pressure settings for household applications include 20/40, 30/50, and 40/60 PSI. The difference between the cut-on and cut-out pressure is typically 20 PSI.

Since vinegar is a weak acid with a pH of two to three, it’s generally safe for septic systems. It won’t eat away at the good bacteria in your septic tank and can help break down the sludge, which is its bottom layer. However, like with everything in life, moderation is key.

The size of your septic tank plays a role in determining the proper size of the drain or leach field. As a general rule, you should have 1 square foot of drain field size per gallon of septic tank capacity. However, you could install a leach field that’s as much as 2.5 square feet per gallon of septic tank capacity. Most professionals determine the right septic tank size and drain field size by the number of bedrooms in the house. A three-bedroom house needs a minimum 1,000-gallon septic tank, for example.

You can add three rotten tomatoes or 1/4 ounce of yeast to your septic tank to speed up the decomposition of sludge. You can add the tomatoes by way of your garbage disposal and the yeast by way of your toilet. You can do either of these additives once every three months as needed.

The Marshfield, MA homeowners’ guide to septic tank services

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