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TRUSTED BY DOVER, NJ HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon105
    Verified septic tank services reviews

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

William Farley Septic Service
4.9(
82
)
Septic System - Install or ReplaceSeptic System - RepairSeptic System - Install or Replace - For Business+1 more

Serving Dover, NJ and surrounding areas

Approved

In business since 1969

Free estimates

Customers say: Quick response

"Bill was great from the get go, he came right over and gave us solid professional advice on what we would need to do and how to go about it. Once it was determined that we would need to replace the septic tank which was an old metal tank that not only had not been used for more than 25 years, it was on the verge of completely failing. Bill took care of everything with the county board of health and the township who required a larger tank than the county. Our install turned to be a lot more work than he originally bargained for. He did not anticipate the amount of buried rock (large- boulders) in the area needed to enlarge a hole for the new 1500 gallon tank. He ultimately hauled out 5 loads of rock (boulders) and had to bring in several loads of crushed cement for fill to replace the boulders and to fill in and around the new tank, level up under and around the new lateral line to seepage pit. Bill was a total professional from start to finish, even with the set back caused by all of the stone, he was able to get right into the project and get the installation completed, since it did not require any new engineering or an expanded field he was able to get the inspection done right away which allowed us to keep the house on the market, and hopefully a new owner will be able to utilize the new system and enjoy the home for many years to come. I would highly recommend William (Bill) Farley Septic Services to anyone looking for a professional septic contractor any day of the week..."
Response time1 day
19 neighbors recently requested a quote
Recommended by87%of homeowners
Toronzi Contracting & Excavation, LLC
4.8(
15
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Dover, NJ and surrounding areas

Approved

In business since 2002

Free estimates

Credit card accepted

"Highly recommended. Excavated 80 foot trench 4' deep for residential waterline hookup to city water. These guys are EXPERIENCED and know what they are doing. Re graded site perfectly, seeded and hay covered. Neat hard working and no short cuts."
Response time1 day
4 neighbors recently requested a quote
Recommended by100%of homeowners
Sunrise Environmental Management, LLC
3.5(
32
)
Septic System - Install or ReplaceSeptic System - Repair

Serving Dover, NJ and surrounding areas

Approved

In business since 1976

Credit card accepted

Customers say: Quick response

"If you have a septic job. HIRE SCOTT AND THE BOYZ. His knowledge and expertise about the process with engineers attorney supplies electrician and Town doâ s and donâ ts was second to none. As a Realtor it was my first septic experience but if one ever comes my way again I will call Sunrise Environmental Management. There have been some issues with tank manufacturer. Scott has been on top of it even after the job is done and finished. Heâ s a stay until the job is FINISHED. THANKS GUYS"
Response time9 hrs
46 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for JS Engineering and Design, LLC
JS Engineering and Design, LLC
5.0(
3
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Dover, NJ and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

JS ENGINEERING AND DESIGN 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.

2 neighbors recently requested a quote
Avatar for AAA Construction Group LLC
AAA Construction Group LLC
5.0(
1
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Dover, NJ and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

At AAA Construction Group LLC, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to 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.

After
Drywall & Plaster
Demolition
Damaged Insulation
Vacuum

+3

Response time9 hrs
3 neighbors recently requested a quote
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Septic Tanks FAQs, answered by experts

If there’s a problem with your sewage system, you might notice water pooling on the ground around the tank, which could indicate an overflow. Clogged and sluggish drains or foul smells coming from your plumbing are also signs that there might be a blockage in your septic system.

Septic drain lines (or leach lines) are typically buried between 18 and 36 inches underground, and should be at least 6 inches below the surface. These pipes are perforated and surrounded by filtering materials like sand or gravel. Burying the lines at this depth helps minimize odors and allows bacteria and other biological processes in the soil to effectively treat the wastewater. Burying lines too close to the surface can cause issues unless the soil is very compact and stable.

Septic tanks come in multiple shapes, sizes, and materials. However, they’re often round or rectangular in shape and made from concrete, fiberglass, or plastic. There’s a range of septic tank sizes, with the average model measuring 30 to 40 square feet and holding 1,000 to 1,500 gallons of waste.

According to the Environmental Protection Agency (EPA), septic tanks must be located a decent distance from places subject to flooding or surface ponding. Additionally, septic tanks should be installed on level ground so that the waste can properly settle in the tank. Most tanks are located 10 to 20 feet away from the home. More specific requirements vary by location, so call a local septic pro or your local health department for more information.

The purpose of a septic tank is to allow solid wastes to separate out of the wastewater using time, gravity, and other natural biological processes. If your septic tank is too small, it might be overwhelmed by solid waste and unable to accomplish this task—and if it’s far too large, there won’t be enough liquid in the tank to nurture the necessary bacteria to aid in the breakdown process.

The Dover, NJ homeowners’ guide to septic tank services

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