Septic Tank Systems

Installations, & Repair

Whether you're installing a septic system in a new home, or replacing an existing septic tank, it is a costly and potentially stressful job. We want you to understand the process of installing a conventional gravity-powered septic system.


Installing a septic tank is not a task to undertake lightly. There are regulatory issues that must be addressed, you'll often have to get a permit from your local town, and there are plumbing and environmental issues to consider. You'll want to work closely with a company that can help you make the right choices for your budget.

Evaluating Your Site

We will begin by determining how large of a drainage field and septic tank you need. This decision will be influenced by an estimate of how much wastewater your house is likely to produce (generally based on the number of bedrooms), and by an analysis of the soil in your yard. 

Installing the holding tank

Before choosing the location to install your septic tank, we will need to check local regulations and the soil quality. Most municipalities require tanks and leaching fields to be located a minimum distances from houses, wells, streams, etc. The size of your septic system will depend as well on how many bedroom you house has (including any you plan to add down the road!) Since septic tanks are stored below ground, tank installation generally requires a backhoe to dig an adequate hole. Inlet and outlet pipes must also be planned for an laid during initial installation.

To ensure that you can find the opening to the septic tank easily, it is recommended that you use a manhole riser to bring the cover near the surface of the soil. 

Installing the leaching field

The size of your leaching field depends on a number of factors, including the size of your septic tanks, the type and absorptive capactity of your soil, and the particular technology that you've chosen to absorb the wastewater. We can help you through this process.

The exact location of your leaching field within your yard will vary, based on a number of factors, including local regulations, the slope of your yard and your home's location on that slope, and the composition of the soil in different parts of the yard.

The best septic tank repair is prevention, but even the most well cared for system will fail at some point. Whether the damage is due to age or something unexpected, a septic repair must be assessed and carried out quickly, yet with expert precision, before more serious damage can occur. That’s why we respond fast when they we from our clients.

Septic System Repair in Henderson County & Western North Carolina

A failing septic system is one of the most stressful problems a property owner can face — and in Western North Carolina's mountain terrain, problems can develop faster than homeowners expect. Gravely Hydroseeding & Excavating provides fast, experienced septic repair throughout Henderson County and surrounding WNC communities. Whether you're dealing with a failed drain field, a clogged leach line, or a tank that needs emergency attention, our team has the equipment and expertise to diagnose the problem and fix it right.

Hands in black gloves gripping a muddy pipe in a dirt trench near water.

Warning Signs Your Septic System Needs Repair

Septic problems rarely fix themselves. If you notice any of the following, contact Gravely Hydroseeding & Excavating right away — the sooner the problem is addressed, the lower the repair cost.

  • Slow drains throughout the house — if multiple fixtures are draining slowly, the problem is likely in the septic system, not an individual drain.
  • Sewage odors inside or outside — a strong sewage smell in your yard or home is a serious warning sign that your system is backing up or venting improperly.
  • Wet or soggy ground over the drain field — saturated soil or standing water above your leach field means the drain field is no longer absorbing properly.
  • Unusually green or lush grass is over the drain field — this is a classic sign that effluent is surfacing and fertilizing the grass above it.
  • Gurgling sounds from toilets or drains — gurgling indicates a blockage or pressure issue in the septic line.
  • Sewage backup into the home — an emergency that requires immediate attention. Call 828-388-1601.

Septic Repair Services We Provide

Drain Field & Leach Line Repair

A failed drain field is the most common and most costly septic repair. We excavate the affected area, remove and replace collapsed or clogged distribution lines, and restore the drain field to proper function. In some cases, we can repair a portion of the field; in others, full replacement is the more cost-effective solution. We'll give you an honest assessment of which is right for your situation.

Drain Field Replacement

When a drain field has failed completely due to biomat buildup, root intrusion, soil compaction, or age, replacement is required. Gravely Hydroseeding & Excavating excavates the old field, hauls away the failed material, and installs a new drain field to current NC Environmental Health standards. We can also reroute or expand the field if the original location is no longer viable.

Septic Line Repair & Replacement

Broken, collapsed, or root-invaded septic lines between the house and tank, or between the tank and drain field, are a common repair in WNC's rocky, tree-heavy terrain. We locate and excavate the damaged section, replace the line, and restore the ground surface.

Tank Access & Excavation

If your septic tank needs to be located, uncovered, or accessed for pumping, inspection, or lid replacement, we dig it out safely and efficiently. Many older WNC properties have tanks buried without risers, making them difficult to locate and access, We handle this regularly.

Septic System Decommissioning

If your property is connected to a municipal sewer line, your existing septic tank must be properly decommissioned, pumped, crushed or filled, and buried, according to NC regulations. We handle the excavation and decommissioning and coordinate with the Henderson County Health Department to ensure compliance.

Emergency Septic Response

If your system is actively backing up or sewage is surfacing on your property, call us immediately at 828-388-1601. We prioritize emergency situations and will get to your site as quickly as possible.

Repair or replace? We'll Give You an Honest Answer.

One of the most common questions we hear is whether to repair an existing septic system or replace it entirely. The honest answer depends on the extent of the damage, the age of the system, and the cost comparison between the two options.

As a general rule: if the tank itself is structurally sound and only a portion of the drain field has failed, repair is usually the right call. If the entire drain field has failed, the system is badly undersized for your current usage, or the tank is cracked and leaking, a full replacement typically costs less in the long run than repeated partial repairs.

Gravely Hydroseeding & Excavating will always give you a clear, honest estimate for both options, and the information you need to make the right decision for your property and your budget.

Worker installing a green manhole cover in a concrete utility pit

Septic Repair Throughout Western North Carolina

We respond to septic repair calls throughout Henderson County and the surrounding Western North Carolina region, including Hendersonville, Flat Rock, Mills River, Fletcher, Arden, Brevard, Saluda, Tryon, Columbus, and surrounding Henderson, Buncombe, Polk, and Transylvania County communities. When your system is failing, you need someone who can get there fast — we serve the WNC region and respond promptly to repair calls.

Don't Wait on a Septic Problem — Call Gravely Today.

Septic issues get worse — and more expensive — the longer they go unaddressed. Gravely Hydroseeding & Excavating has the experience, equipment, and local knowledge to diagnose and repair your system quickly and correctly. We've been serving Western North Carolina property owners for over 15 years, and we stand behind our work.

Call 828-388-1601 or email gravelyhydroseed@att.net for a free estimate. We serve Henderson County and all ofWestern North Carolina — Monday through Friday, 8am to 5pm.

Septic System Installation in Henderson County & Western North Carolina

If you're building a new home, adding a structure, or replacing a failed system on your property, a properly installed septic system is one of the most important investments you'll make. Gravely Hydroseeding & Excavating has been installing septic systems throughout Henderson County and Western North Carolina for over 15 years. We handle the full process — from site evaluation and permitting coordination to excavation, tank placement, and drain field installation — so you don't have to manage multiple contractors or wonder if the job is being done to code.

Why Choose Gravely Section

Why Henderson County Property Owners Choose Gravelya

Western North Carolina's mountain terrain — steep slopes, variable soils, and heavy seasonal rainfall — creates septic installation challenges that out-of-area contractors often aren't prepared for. Our team has spent 15+ years working in Henderson, Buncombe, and Transylvania County soils and knows how to site, size, and install a system that performs for decades in this environment.

  • Licensed, bonded, and insured
  • 15+ years of excavating experience in WNC mountain terrain
  • We coordinate with soil scientists and the Henderson County Health Department
  • Full-service: we excavate, install, backfill, and restore your yard
  • We pair septic work with hydroseeding to restore disturbed ground after installation
  • Free estimates — no obligation
Black pipe entering a concrete septic tank with a green round access lid on top

Septic System Installation Services

Conventional Gravity Septic Systems

The most common type of system for properties with adequate soil percolation and suitable grade. We excavate for the tank and drain field, install the components to NC specifications, and backfill the site cleanly. Conventional gravity systems are low-maintenance and cost-effective when the site conditions support them.

Pump Systems

When a property's elevation or drain field location requires wastewater to be moved uphill, a pump system (also called a pressure distribution system) is required. We install the pump chamber, controls, and pressurized lines needed to move effluent reliably to the drain field.

Mound Systems

For properties with high water tables, shallow soil depth, or soil that doesn't perc adequately for a conventional system, a mound system raises the drain field above the natural ground surface. Mound systems are common on WNC mountain lots where soil depth over bedrock is limited. We grade and construct the mound to meet NC Environmental Health requirements.

Perc Test Site Preparation

Before any septic permit can be issued in North Carolina, a licensed soil scientist must perform a site evaluation and percolation (perc) test. We clear, grade, and prepare your test area so the evaluation goes smoothly and on schedule — preventing costly delays in your build timeline.

New Construction Coordination

Building a home in Henderson County or the surrounding mountains? We coordinate our septic installation timeline with your builder and soil scientist, so your project stays on schedule. We're familiar with Henderson County Health Department permitting requirements and can help navigate the process from application through final inspection.

The Installation Process

How the Septic Installation Process Works

  • Every septic installation in North Carolina follows a required sequence. Here's what to expect when you work with Gravely Hydroseeding & Excavating:
  • Site Evaluation & Perc Test: A licensed soil scientist evaluates your lot and performs a percolation test. This determines what type of system your soil and topography can support.
  • Permit Application: The Henderson County Health Department Environmental Health Division reviews the soil report and issues a septic permit before any installation work begins.
  • Excavation: We dig the tank location and drain field trenches to the dimensions specified on the permit. Our equipment is suited to WNC mountain terrain, including steep or narrow access sites.
  • Tank & Line Installation: We set the septic tank, install inlet and outlet pipes, place distribution lines, and construct the drain field to NC code.
  • Inspection: Henderson County Health Department inspects the system before backfilling.
  • Backfill & Site Restoration: We backfill, compact, and grade the disturbed area. We can also hydroseed the area to restore grass and prevent erosion quickly.

Serving Henderson County and Western North Carolina

Gravely Hydroseeding & Excavating installs septic systems throughout the Western North Carolina region, including Hendersonville, Flat Rock, Mills River, Fletcher, Arden, Brevard, Saluda, Tryon, Columbus, and surrounding Henderson, Buncombe, Polk, and Transylvania County communities. If you're unsure whether we serve your area, give us a call — we're happy to discuss your project.

Frequently Asked Questions

  • Do you install septic systems in Western North Carolina?

    Yes. Gravely Hydroseeding & Excavating installs conventional gravity septic systems, pump systems, and mound systems for residential and commercial properties in Henderson County and surrounding Western North Carolina counties. We manage the excavation and installation from start to finish and coordinate with the local health department for permitting.

  • What are the signs that a septic system is failing?

    Common signs of a failing septic system include slow-draining sinks, toilets, or showers; sewage odors inside or outside the home; wet, soggy, or unusually lush green patches of grass over the drain field; gurgling sounds from drains or toilets; and sewage backing up into the home. If you notice any of these signs, contact a septic professional promptly — delays can result in more extensive and costly repairs.

  • How do septic drain fields work, and what causes them to fail?

    A septic drain field (also called a leach field) is a network of perforated pipes buried in gravel trenches that allow treated wastewater to slowly absorb into the surrounding soil. Drain fields fail most commonly due to biomat buildup — a layer of organic material that clogs the soil and prevents absorption — as well as root intrusion from nearby trees, soil compaction from vehicles driving over the field, or an undersized system for the property's usage. Once a drain field fails, excavation and replacement of the affected lines is typically required.

  • Do you repair septic drain fields and leach lines?

    Yes. We excavate failed or damaged drain fields, replace collapsed or clogged leach lines, and restore proper function to conventional gravity and pump septic systems. We also expand or reroute lines when the original layout is undersized or improperly placed for the site conditions.

  • Can you install a septic system for a new home in Henderson County, NC?

    Yes. For new construction in Henderson County, the process begins with a site evaluation and percolation (perc) test performed by a licensed soil scientist. Once approved by the Henderson County Health Department and a permit is issued, we excavate and install the system to meet NC state and county specifications. We coordinate with your soil scientist and building team to keep the project on schedule.

  • What is a perc test, and do I need one before installing a septic system?

    A percolation test (perc test) measures how quickly water drains through the soil on your property. In North Carolina, a perc test and site evaluation performed by a licensed soil scientist is required before a septic permit can be issued for a new system. The test results determine what type of system your lot can support. Gravely Hydroseeding & Excavating can grade and prepare your test site to ensure the evaluation process goes smoothly.

  • Do you decommission old septic tanks when properties connect to municipal sewer?

    Yes. When a property connects to a public sewer line, the existing septic tank must be properly decommissioned — typically pumped, crushed or filled, and buried — in accordance with NC regulations. We handle the excavation and decommissioning process and coordinate with your local health department to ensure all requirements are met.

Ready to Get Started? Call for a Free Estimate.

Don't leave your septic installation to chance or a contractor who doesn't know WNC terrain. Gravely Hydroseeding & Excavating brings 15+ years of local experience, the right equipment, and a commitment to getting the job done right the first time.

Call us at 828-388-1601 or email gravelyhydroseed@att.net. We serve Henderson County and all of Western North Carolina — Monday through Friday, 8am to 5pm.