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TRUSTED BY DOVER, DE HOMEOWNERS

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    Average homeowner rating
  • Verified reviews icon71
    Verified septic tank services reviews

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

RLN Ent., LLC
New to Angi
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Dover, DE and surrounding areas

In business since 2017

Free estimates

We are dedicated to providing our clients with the very best in service, installation and repair for all phases of your septic system. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we are involved with. We are known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction. \n

Response time2 days
Gill Construction, Inc.
0.0(
1
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Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Dover, DE and surrounding areas

In business since 2000

Free estimates

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

Recommended by100%of homeowners
Lairds Family Mechanical Plumbing & Heating, LLC
New to Angi
Septic System - Install or Replace - For BusinessSeptic System - Repair - For BusinessSeptic Tank - Clean or Pump Out - For Business

Serving Dover, DE and surrounding areas

In business since 1991

Free estimates

Credit card accepted

Welcome to Lairds Mechanical in Clayton, licensed, insured and bonded plumbers. \nWe are a full service plumbing company servicing all your gas, water and sewer needs. We pride ourselves on providing expert advice and high quality work. \nAs installers of sewer, water and gas lines, much of our work involves bathroom plumbing. We can help you make your dream bathroom a reality, clean clogged drains, make minor and major repairs and service your plumbing fixtures and appliances. Our HVAC Division is fully Certified to handle all your needs.

Carlos Aguilar Home Services
New to Angi
Septic System - Install or ReplaceSeptic System - Repair

Serving Dover, DE and surrounding areas

In business since 2008

Free estimates

Emergency services offered

Carlos Aguilar Home 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.

Septic Tanks FAQs, answered by experts

When your septic system is failing, you’ll probably smell it. Common signs of a septic system failure include sewage odors in the home or around the yard, flooding in the yard above the septic tank or in the leach field, and wastewater or even raw sewage backing up into your home’s drains.

The depth of your septic tank has nothing to do with its size. In fact, some septic tanks can even be installed above-ground! Like other sizes, a 1,000-gallon septic tank could be buried as shallow as 4 inches below the ground or as deep as 4 feet. It all depends on your specific property.

Yes, it is possible to pump a septic tank too frequently. The ideal pumping schedule varies based on the tank's capacity, household size, and water usage. Pumping the septic tank more often than recommended can cause the beneficial bacteria to leach into the drain field, leading to an imbalance and a build-up of solid waste.

If you aren’t sure if you have a septic tank or a cesspit, you can check your property records or inspect your drainage system. A septic tank has an outlet pipe that allows liquid to drain into a soakaway or drain field, while a cesspit is a sealed tank that requires frequent emptying. If you notice a manhole cover and no nearby drainage field, it’s likely a cesspit. Signs like slow drainage or a frequent need for pumping can also provide clues. A professional inspection is the easiest way to confirm if your home runs on a septic tank or cesspit.

Septic tanks naturally have bacteria that break down some of the solid waste in the septic tank. However, sludge buildup is just part of owning a septic system. While liquid wastewater can be filtered and treated through the system, a septic tank company has to pump the septic tank out at least every few years.

The Dover, DE homeowners’ guide to septic tank services

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