Septic systems, sewer lines and excavation across Rhode IslandSeptic and excavation across Rhode Island
Call or text (401) 474-8926 Contractor Reg: 2681 · DEM: L1362
South County Septic & Excavation Services
Excavation of a leach field bed with crushed stone spread and string lines set
Our Services

Excavation in North Kingstown, RI

Excavation · North Kingstown, RI

Foundation holes and utility trenches, dug to the plan

South County Septic and Excavation Services handles excavation for residential and commercial projects across Rhode Island. We dig foundation holes, utility trenches, generator pads and driveway cuts. When the foundation or the pipe is in, we backfill and rough grade around it. North Kingstown sits at the center of our service area, which covers the whole state.

Excavation is the digging itself: the hole for a foundation or the trench for a buried line. Taking a raw lot to a graded, drained building site is our site work. The dig for a new septic system is part of septic system installation in North Kingstown. Call or text (401) 474-8926, and we look at the job and put the quote in writing.

What We Handle

  • Foundation holes for new homes, dug to the depth on the plan
  • Excavation for additions and bulkheads beside an existing house
  • Utility trenches for water service lines and sewer laterals
  • Generator pads dug out and leveled
  • Driveway cuts from the road to the house site
  • Backfill and rough grading once the foundation or the pipe is in
  • White premarks and a Dig Safe notice before any machine digs
  • Hand digging to uncover marked lines, as Rhode Island law requires

Request an Excavation Quote

Tell us about the septic, sewer, drainage or excavation job and where the property is. We look at the job and put the quote in writing.

Foundation Excavation for New Homes and Additions

A foundation dig starts with the plan. The plan sets the footprint and the footing depth, and stakes mark the corners on the ground. We dig the hole a little wider than the walls, so there is room to set the forms. The bottom gets checked against the plan before any concrete goes in.

Additions and bulkheads mean digging beside a house that people live in. The old footing has to stay supported, and buried lines often run close to the walls. That digging goes slower, and the quote reflects it.

After the walls cure and the dampproofing goes on, the hole gets backfilled. When the plan calls for footing drains, they go in before the backfill. Then we rough grade the soil so it slopes away from the house.

Utility Trenching in Rhode Island's Glacial Soils

A new home needs a water service line from the meter or the well. The sewer lateral runs to the street or to the septic tank. Those trenches are part of water line repair and installation and sewer line repair. We dig to the grades on the plan, then bed and backfill around the pipe.

State soil guidance names loose glacial till as the most widespread soil material west of Narragansett Bay. It mixes sand, gravel, cobbles and stones. Compact till, often called hardpan, is very dense and slow to dig, even by machine. Old stone walls on a lot are one clue to till ground.

Outwash plains are different: layered sand and gravel with few stones. That ground is loose, and the walls of a hole can cave in. Federal OSHA rules require cave-in protection at 5 feet deep or more, unless the trench is in stable rock. Sand and gravel rate as Type C under those rules, the class that needs the flattest slopes.

How Does the Dig Safe Call Work in Rhode Island?

Rhode Island law requires a notice to Dig Safe before machine digging within 100 feet of a buried utility line. Before the notice, the dig area gets marked in white. The notice goes in at least 72 hours ahead, not counting weekends and holidays. Digging has to start within 30 days of the notice.

Each utility then marks its own lines with paint or stakes. Red is electric, yellow is gas, orange is phone or cable and blue is water. A mark means the line sits within a foot and a half to either side. Inside that strip, the line gets uncovered by hand.

Private lines get no marks. Power to a detached garage or the pipe out to a septic tank belongs to the owner. A town water or sewer system that is not a Dig Safe member needs its own call. Tell us where your own lines run before the machine starts.

Excavation with a mini excavator digging a trench beside a new building New concrete tank set in a fresh dig with the backfill piled around it, excavation

Ready to get started?

Call or text for a written quote. We work about 40 miles around North Kingstown across all of Rhode Island.

(401) 474-8926
How We Work

How a Job With South County Septic Runs

From the first call or text to the finished work, here is how it goes.

1

Call or Text

Call or text (401) 474-8926 and tell us the town and the job. Photos of the problem or the lot help.

2

We Look at the Job

We come out to see the site and how a machine gets in. On a problem call, we look for the cause first.

3

Your Written Quote

The quote comes to you in writing, with the work spelled out. A septic design goes to the state for approval before the install.

4

We Do the Work

After a Dig Safe (811) call, the utilities mark their buried lines before any machine digs. Then we do the work the quote describes.

5

The Finish

Where we dug, we backfill and grade, and we tell you what we did. A new septic system goes into use once the state issues its Certificate of Conformance.

FAQ

Excavation Questions, Answered

Common questions about excavation around North Kingstown and the rest of Rhode Island. If yours is not here, call or text and ask.

Call (401) 474-8926

How much does excavation cost?
Every dig is priced on its own. Size and depth drive most of the price, and so does what the hole hits, like ledge or groundwater. Access for the machine and any fill brought in matter too. We look at the job and put the quote in writing.
Who calls Dig Safe, you or me?
Rhode Island law puts the notice on whoever is responsible for the excavating. Dig Safe recommends that the excavation contractor make the call, and when we dig, we do. Planning to dig with a machine yourself? The same law applies, and the number is 811.
Do I need a permit for excavation?
It depends on what the hole is for. A new home or an addition usually needs a building permit from the town building official. A septic system design goes to the Rhode Island Department of Environmental Management (RIDEM) for approval. Each office answers for your lot, and we point you to the right one.
How long does an excavation job take?
The Dig Safe wait comes first, because the utilities need that time to mark their lines. After that, the length depends on the size of the dig and what the ground holds. Water tables tend to run high in winter and spring, so a deep hole can take on water then. We talk through timing when we look at the job.
Will the machines damage my septic system?
They can if they drive over it. The EPA's septic guidance says not to park or drive on a leach field. Heavy equipment compacts the soil and can damage the pipes. Show us where the tank and the leach field sit, and we plan the route in around them.
Do you work with builders and engineers?
Yes. We work closely with builders and engineers on residential and commercial jobs. The plan and the stakes set the dig. A change in the field goes back to whoever drew the plan.
More From South County Septic

Work That Pairs With Excavation

Site work with a dozer clearing and grading a lot behind a silt fence

Site Work

We take a raw lot to a cleared, graded site that is ready to build on. Land clearing, grading, erosion control and gravel access roads are all part of the work.

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Drainage systems work setting a corrugated culvert pipe across a gravel driveway

Drainage Systems

We build French drains, curtain drains, footing drains and dry wells for wet yards and basements across Rhode Island. Every job starts with where the water will go.

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Retaining walls of stacked block along a driveway with a mini excavator behind

Retaining Walls

Retaining walls in block and natural stone, plus walkways and outdoor stairs. We set each wall on a compacted base, with drainage stone behind it.

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Why Choose South County Septic

Septic, Sewer and Excavation Work Around North Kingstown

Conventional and Advanced Systems

We install conventional septic systems and advanced treatment systems, such as nitrogen-reducing units. The soil and the state's rules decide which one fits the lot.

Residential and Commercial Work

We take on small residential repairs and large commercial site work. On new construction, we work closely with the builder and the engineer.

Priced After We Look

We look at the job before we price anything. Then the quote comes to you in writing, and the work starts once you say yes.

Google Reviews

Rated 5.0 on Google Around North Kingstown

Real reviews of our septic and excavation work, 8 reviews on Google.

Read All Reviews

South County Septic did an excellent job replacing our old septic system and leach-field. Michael surveyed the property, designed a new system, installed and worked with the RI DEM with no issues. I highly recommend this business.

Conner Marleya year ago · Google review

Michael was great! Picked up right away and was able to come within the hour to evaluate. Immediately got into motion additional resources we might need to come that day and solved the problem. Very informative and great to work with. Highly recommend.

Andrea McGregora year ago · Google review

Was referred out to Michael after an emergency waterline break that flooded our basement. He was there every step of the way and answered all the questions we had. Michael let us know what was happening during the process and could not have been happier with the outcome. Great price and great customer service! Highly recommend if anyone is in need of their services

Guides and Resources

Excavation Guides

Request a Quote

Get In Touch With South County Septic

Tell us what the job is and which town the property is in. Call or text (401) 474-8926 or use the form, and photos by text help.

  • Call or text (401) 474-8926
  • Serving North Kingstown, RI and the rest of Rhode Island
  • Written quotes · septic, sewer, excavation and drainage work

Request a Quote

Tell us about the septic, sewer, drainage or excavation job and where the property is. We look at the job and put the quote in writing.

Call (401) 474-8926