Septic in Dunnellon, FL

Last updated: Mar 21, 2026

Dunnellon's quiet streets, shaded by live oaks and a line of spring-fed water, feel like a small town where practical, self-reliant homekeeping is part of daily life. In this community, a reliable septic system often sits behind the scenes, keeping kitchens clean, showers flowing, and lawns green without the constant buzz of utility hookups.

Is septic common in Dunnellon? Should I expect septic if I own or buy a home?

Yes. For many Dunnellon homes, especially outside city sewer boundaries, the standard plumbing backbone is a private septic system. If you own or are buying a home here, you should expect septic unless the house happens to be connected to a municipal sewer line. When you're evaluating a property, ask for the current septic permit and service history, confirm the tank size and type, know when it was last pumped, and arrange a professional inspection as part of the purchase or renovation process. A typical Dunnellon home relies on a septic tank plus a drain field designed for the family size and local soil conditions. budgeting for an occasional pump or service call is normal, not a sign of a problem.

Why homes typically use septic systems in Dunnellon

  • Rural development pattern: Dunnellon grew with many standalone lots where town sewer expansion hasn't always kept pace. Septic systems offered a practical, cost-effective way to handle household wastewater on-site.
  • Infrastructure realities: Extending centralized sewer lines to every property can be expensive and disruptive in this area. On-site systems let homes function without waiting for big utility projects.
  • Local soils and groundwater: Florida's sandy soils drain well when properly engineered, but the system must be sized and placed correctly to protect the landscape and groundwater. That balance—drainage capability plus proper separation from wells and foundations—makes septic a sensible, durable choice when designed and maintained properly.

High-level explanation (why septic exists here)

On-site wastewater treatment fits Dunnellon's landscape: lots spread apart, older neighborhoods established before sewer expansion, and the practical need to manage wastewater locally. A well-designed septic system uses the tank to separate solids and the drain field to distribute treated water into the soil, returning it at a safe rate while protecting wells, springs, and the environment. With regular maintenance and careful use, a septic system can be a dependable part of Dunnellon living for many years.

Tips to keep it healthy

  • Pump and inspect on a routine schedule; ask your pro for a plan based on tank size and household use.
  • Avoid flushing fats, oils, grease, cleaners, solvents, or non-dissolvable items.
  • Protect the drain field: keep heavy equipment off, plant only shallow-rooted vegetation, and maintain proper grading and drainage.
  • Watch for signs like gurgling sounds, slow drains, or damp, lush spots above the drain field.

If you're new to Dunnellon or planning a move, you'll find practical, neighborly guidance here to help you keep your septic system performing its best.

Where Septic Systems Are Common in Dunnellon

Map of septic coverage in Dunnellon, FL

Rural, low-density residential areas outside sewer service

Dunnellon features many single-family homes on larger lots where centralized sewer lines aren't available. In these zones, septic systems are the practical and common wastewater solution. The demand and practicality of septic come from a combination of land availability, development patterns, and the fact that not every area has a municipal sewer expansion yet.

  • Typical lot sizes in these areas allow for a conventional septic drain field and access for maintenance.
  • The absence of continuous sewer lines in outlying neighborhoods makes septic the standard option.
  • Homes built on larger parcels often rely on septic because extending sewer to every property isn't economically feasible.

Springs, floodplains, and high water table areas

The Rainbow River and Rainbow Springs region around Dunnellon includes zones where the water table rises seasonally and floodplains are present. In these locations, septic systems require careful siting and, at times, specialized designs to protect groundwater and surface water.

  • In high-water or flood-prone pockets, regulators may require elevated or mound systems.
  • A professional site evaluation helps determine drain-field depth, setback from wells, and appropriate system type.
  • Proper setback distances from springs, streams, and flood zones are essential for long-term performance.

Soils and site conditions that support septic use

Florida's sandy soils and permeable substrata in many Dunnellon neighborhoods support septic effluent treatment when properly designed and maintained. However, soil limitations vary, and some parcels need engineered solutions.

  • Well-drained soils with good percolation support drain-field effectiveness.
  • Shallow bedrock, limestone, or perched water can limit where a drain field sits.
  • Soil testing and percolation testing are standard steps in determining septic suitability.

Development patterns and sewer-service status

Development history influences how common septic is today. Older parts of town and rural enclaves often relied on septic before sewer projects expanded, while newer areas may be connected to public sewer.

  • Check whether your property lies within an active sewer service area.
  • If you're unsure, your county environmental health office or local utility can confirm sewer availability.
  • Newer subdivisions may be sewer-connected; older or rural subdivisions are more likely on septic.

How to tell if your property is on septic (practical steps)

If you're unsure whether your Dunnellon home uses septic, use these quick checks.

  1. Confirm sewer status with the local authority: contact the Marion County Environmental Health office or the City of Dunnellon Utilities to verify service boundaries.
  2. Review property records or your closing documents for a septic permit or system location map.
  3. Look for typical indicators in the yard: a designated drain-field area, a buried tank, or plumbing-test access lids.
  4. If in doubt, hire a licensed septicPro to perform a system evaluation and, if needed, a pump-out schedule and maintenance plan.
  5. Maintain a repair and pumping schedule to keep the system functioning and protect groundwater.

Maintenance mindset for Dunnellon septic owners

Proactive care matters more than you might think in this area. Regular maintenance helps prevent failures that can impact the Rainbow River watershed and your property value.

  • Pump every 3–5 years, or as recommended by a licensed septic contractor based on usage.
  • Use water-efficient fixtures and spread out high-water-use activities.
  • Protect the drain field: avoid heavy vehicles, construction, and deep-rooted trees over the area.
  • Keep records of inspections, pump-outs, and any repairs for local permitting and future property transactions.

Official resources for septic guidance

  • Florida Department of Health — Onsite Sewage Treatment and Disposal Systems (OSTDS):
  • U.S. Environmental Protection Agency — Septic Systems: https://www.epa.gov/septic

Septic vs Sewer: What Homeowners in Dunnellon Should Know

How sewer and septic systems differ

  • Septic systems are fixed on your property. Wastewater flows from your home into a septic tank, where solids settle, then to underground drain fields where liquid is treated naturally. You're responsible for pumping, inspection, and managing the system over time.
  • Municipal sewers mean your home is connected to a city or county sewer line. Wastewater is carried away by the utility to a central treatment facility. You pay a monthly sewer bill, and the city handles maintenance of the pipes and treatment process.
  • Environmental footprint and risk: a well-maintained septic system can be low-impact, but failures can contaminate groundwater if not managed. A sewer connection eliminates on-site drain fields, but relies on a reliable utility and continuous service.

Dunnellon-specific considerations

  • Dunnellon sits in Marion County, where soil types and groundwater patterns vary. Sandy soils can support drain fields, but high water tables or seasonal flooding can impact performance.
  • Proximity to wells, surface water, and property layout matter. Local regulations control setbacks, drain-field placement, and when upgrades or replacements are needed.
  • Seasonality and maintenance timing are key in Florida's climate. Plan around rainy periods and manage vegetation to prevent roots from invading drain fields.

Should you connect to sewer?

  • Availability check: Confirm with your utility provider whether municipal sewer is available on your street or neighborhood.
  • Condition of current system: If your septic is aging, failing, or requires frequent pumping, a sewer hookup may reduce long-term headaches.
  • Long-term cost view: Weigh ongoing monthly sewer charges against septic pumping, repairs, and potential drain-field replacement. Connection costs can be substantial but can offer predictable bills and fewer on-site responsibilities.
  • Environmental and property impact: Sewer connections typically reduce the risk of septic-related groundwater contamination and may improve landscape usability if drain fields become problematic.

Step-by-step decision guide:

  1. Contact your local utility and zoning/health authorities to confirm sewer availability and any mandatory timelines.
  2. Get a formal estimate for sewer hookup if available, including connection fees and any required street work.
  3. Have your current septic evaluated by a licensed pro to assess tank condition, pump history, and drain-field health.
  4. Run a financial comparison over 10–20 years, including maintenance versus hookup costs, repairs, and potential property value implications.
  5. Review environmental considerations and any local incentives for upgrading or connecting.

Cost considerations at a glance

  • Septic maintenance: pump every 3–5 years, inspections, and occasional repairs. Typical pumping and inspection costs often range in the low hundreds to a few hundred dollars per service, depending on local rates and system size.
  • Drain-field replacements: can be a significant investment if issues arise.
  • Sewer hookup: depends on distance to main, trenching work, permits, and impact on your landscaping. In Florida, hookup costs can vary widely but may be substantial upfront, with ongoing sewer charges thereafter.
  • Official guidance: for authoritative information on septic systems and sewer regulations in Florida, see:

Maintenance essentials you can start now

  • Schedule regular septic pumping and inspections with a licensed contractor.
  • Conserve water to reduce load on the septic system: fix leaks, use high-efficiency fixtures, and spread out laundry.
  • Protect the drain field: keep vehicles and heavy equipment off, plant only shallow-rooted vegetation, and avoid driveway or pool installations over the field.
  • Mind what goes into the system: use septic-safe products, avoid flushing non-biodegradable items, and limit grease/disposal of chemicals.
  • Watch for warning signs: unusually long drainage times, gurgling sounds, wet or lush spots over the drain field, or sewage odors.

Quick-start steps for Dunnellon homeowners

  1. Call your utility or Marion County/DOH contacts to confirm sewer availability near your home.
  2. Arrange a septic system assessment if you're unsure of current condition.
  3. Compare the logistics and costs of a sewer hookup versus preserving and maintaining your septic.
  4. Review official resources and local regulations to guide your decision.

Official resources:

Typical Septic System Types in Dunnellon

Conventional gravity drainfield

This is the standard setup you'll see in many Dunnellon homes. Wastewater exits the septic tank by gravity into a series of perforated pipes buried in undisturbed soil or a shallow gravel trench.

  • Pros:
    • Simple, cost-effective to install and maintain
    • Fewer moving parts
  • Cons:
    • Requires adequate soil depth and drainage
    • Performance can drop in tight or high-water-table soils
  • Best suited for:
    • Homes with well-drained, sandy soils and adequate leach field area
  • Quick maintenance note:
    • Have the tank pumped regularly and inspect the drainfield for signs of saturation or surface sogginess after heavy rains.

Pressure distribution (pressure-dosed) drainfield

Used when soil conditions are uneven or the site needs more precise water distribution. A small pump sends effluent under controlled pressure to multiple trenches.

  • How it works (in brief):
    • A pump station pushes effluent through laterals so each trench receives even flow
  • Pros:
    • More uniform distribution in challenged soils or sloped lots
    • Greater tolerance for restrictive soils or limited trench length
  • Cons:
    • Higher upfront cost and periodic pump maintenance
    • Requires electrical power and routine service
  • Best suited for:
    • Sloped sites, shallow soils, or where space for a traditional trench is limited

Mound system (raised drainfield)

Mounds are used when natural soil depth is insufficient or the water table is high. Drainfield trenches sit inside a engineered sand fill that rises above the native ground.

  • How it works:
    • A sand-and-soil mound is built above the existing ground, with the drainfield inside the mound
  • Pros:
    • Makes use of poor native soil for treatment
    • Protects groundwater by increasing treatment distance to the native soil
  • Cons:
    • More surface area and materials; higher installation and maintenance costs
  • Best suited for:
    • High water table, shallow soils, or lot with limited space for a conventional drainfield

Chamber or trench system

A modern alternative to gravel trenches, using modular plastic chambers to create the drainfield.

  • How it works:
    • Interlocking plastic chambers form a wide, low-profile infiltration bed
  • Pros:
    • Lightweight, faster installation; potential cost savings over time
    • Good infiltration if properly installed
  • Cons:
    • Requires well-prepared soil and careful compaction management
  • Best suited for:
    • Homes with adequate soil depth and space to accommodate the chamber beds

Advanced On-Site Treatment Systems (AOSTDS) / Aerobic Treatment Units (ATU)

For properties with challenging soils or nearby sensitive water bodies, advanced treatment units pre-treat wastewater before it enters the drainfield or irrigation system.

  • How they differ:
    • Treat wastewater to higher standards before final disposal
  • Pros:
    • Improved effluent quality; can enable septic disposal closer to resources or in limited soils
  • Cons:
    • Higher purchase price and ongoing maintenance; requires regular service
  • Best suited for:
    • Properties with shallow groundwater, proximity to wells or streams, or soil limitations

Maintenance and planning steps to consider

  • Step 1: Get a professional soil assessment and site plan for Dunnellon clay/sand profiles
  • Step 2: Review local codes and permits (Marion County; Florida OSTDS requirements)
  • Step 3: Establish a pumping and inspection schedule with a licensed septic contractor
  • Step 4: Monitor for signs of drainfield distress (gurgling sounds, wet spots, odors)

Official resources

  • Florida Department of Health OSTDS:
  • Florida Department of Environmental Protection OSTDS:
  • EPA Septic Systems: https://www.epa.gov/septic

Common Septic Issues in Dunnellon

Drainfield failure due to high water table and heavy rainfall

Dunnellon areas often contend with seasonal rains and elevated groundwater in parts of Marion County. When the drainfield is saturated, the soil can't absorb effluent, leading to backups, surface wet spots, and odors.

  • Symptoms to watch for: gurgling toilets, slow drains, soggy ground over the drainfield, lush greens or damp patches.
  • Dunnellon-specific factors: shallow water tables, proximity to springs, and certain soil lenses that drain poorly during wet months.
  • What to do:
    1. Conserve water during rainier periods (spread out laundry, fix leaks).
    2. Keep vehicles and heavy equipment off the drainfield; avoid planting trees within 10 feet.
    3. Have a licensed septic contractor inspect; pumping or repairing the drainfield may be needed, and a replacement system (like a mound) could be considered if soil conditions warrant.
    4. If the system is aging or undersized, plan with a pro before the next wet season.
  • Official guidance: Florida DOH OSTDS overview and maintenance tips:

Root intrusion from trees and landscaping

Mature trees and aggressive roots can invade septic lines and the tank, especially in Dunnellon yards with established oaks and pines.

  • Common signs: slow drains, toilet backups, damp spots above the drainfield, roots seen near cleanouts.
  • Why it matters locally: extensive root systems and clay/limestone variations can push into pipes or compress the soil around the field.
  • Prevention and fixes:
    1. Place roots barriers and avoid planting large trees over or near the system.
    2. Schedule routine inspections to detect root intrusion early.
    3. If intrusion is found, hire a licensed pro to remove roots and repair damaged lines; tough root problems may require system adjustments.
  • Official resource: EPA Septic Systems basics:

Groundwater and springs risk due to karst and local hydrology

Dunnellon sits near springs and karst features; effluent can move quickly through sandy soils or limestone formations, affecting groundwater and surface water.

Septic Inspection, Permits & Local Oversight

Who regulates septic systems near Dunnellon

  • In Dunnellon (Marion County), septic systems are overseen primarily by the Florida Department of Health in Marion County (DOH-Marion) under the Onsite Sewage Treatment and Disposal System (OSTDS) program. Local cities/counties may add building or site-planning requirements for work that affects the system.
  • For official guidance, start with the Florida Department of Health Onsite Sewage program: https://www.floridahealth.gov/environmental-health/onsite-sewage/index.html

Do I need a permit?

  • Yes. A permit is typically required for:
    • New installations or replacements of OSTDS
    • Major repairs or relocation of components
    • Abandonment or decommissioning of an old system
  • Real estate transactions often trigger additional steps:
    • You may need a Certificate of Onsite Sewage System (OSTDS) compliance or equivalent documentation as part of the sale.
  • Permits ensure the system is designed and installed to meet soil, site, and safety standards set by state rules.

Real estate transactions and inspections

  • If you're buying or selling a home with a septic system:
    • Expect a formal septic inspection by a state-licensed inspector.
    • The report will note tank conditions, baffles, pump status, drainfield health, sludge/scum layers, and any repairs needed.
    • Lenders sometimes require a CO (certificate of compliance) or an OSTDS-related report before closing.
  • Quick tips:
    • Ask for the inspector's written report and any recommended maintenance or repairs.
    • Keep a record of any past pumping, repairs, or replacements.

Hiring and what to expect from an inspection

  • Hire only a state-licensed septic inspector.
  • Typical inspection steps:
    1. Visual assessment of the systems and surface conditions.
    2. Pumping or probing to determine sludge and scum heights.
    3. Check baffles and tank integrity; verify access risers and lids are secure.
    4. Drainfield evaluation: look for pooling, odors, surface cracks, or saturated soils.
    5. Optional but common: dye test or camera inspection of lines if problems are suspected.
  • After inspection, you'll receive a written report with findings and maintenance recommendations.

Permits: how to apply

  • Step-by-step process you'll often follow:
    1. Confirm permit type with the local administering office (DOH-Marion or county building/planning office).
    2. Gather required documents: system plan/layout, site map, soil data if available, and any prior inspection reports.
    3. Submit the permit application and pay fees.
    4. Schedule plan review and, once approved, perform the installation or repair.
    5. Schedule and pass required inspections at key milestones (installation, final, and any follow-up checks).
  • Expected timeline varies by workload and project scope; ask the local office for a realistic estimate.

Local oversight in Dunnellon

  • DOH-Marion (state health department) handles OSTDS permits, plan reviews, and inspections.
  • Marion County Building Department or City of Dunnellon planning/zoning may be involved if the project includes additional construction, drainage work, or site alterations.
  • For general guidance, check DOH Marion's resources and contact options: https://www.floridahealth.gov/environmental-health/onsite-sewage/index.html

Quick reference checklist

  • Determine permit requirement for installation, repair, or abandonment.
  • Hire a state-licensed septic inspector for an official evaluation.
  • If real estate involved, obtain a septic report and any CO/OSTDS compliance docs.
  • Prepare and submit permit materials with the appropriate local or state office.
  • Schedule inspections at critical milestones; address any deficiencies.
  • Keep all permits, plans, and inspection reports with home records.

Useful resources

Septic Maintenance for Homes in Dunnellon

Why Dunnellon Needs Extra Care

  • Dunnellon sits in a warm, humid climate with seasonal heavy rainfall and a relatively high water table, which can saturate drainfields and stress tanks. This makes regular maintenance especially important to prevent early failures.
  • Many Dunnellon properties have tree roots and landscaping decisions that can intrude on drainfields. Proactive protection helps avoid costly repairs.
  • Sandy Florida soils drain quickly, but heavy rain and irrigation can overwhelm systems. Consistent pumping and disciplined water use mitigate overload risk.

Regular Pumping Schedule for Dunnellon Homes

A good baseline works with the Florida guidelines, but adjust for usage and tank size.

  • 1) Typical 3–4 bedroom homes with a 1,000–1,500 gallon tank: plan a pump every 3–5 years, depending on usage.
  • 2) Higher water use, garbage disposals, large families, or older/compact tanks: pump closer to every 2–3 years.
  • 3) After major events: if you've experienced repeated slow drains, odors, or damp spots, arrange a pump or inspection sooner.
  • 4) Always base timing on an in-tank sludge/scum assessment by a licensed septic professional: when sludge or scum approaches one-third of tank depth, pumping is due.

Helpful steps:

  1. Schedule routine inspections every 1–2 years as a proactive measure.
  2. Have pumping performed by a licensed permitted contractor; keep a service record for your system.
  3. If you notice signs of trouble, don't delay pumping—addressing solid buildup early saves drainfield life.

Protecting Your Drainfield in Dunnellon

  • Keep trees, shrubs, and large roots away from the drainfield area. Root intrusion is a common cause of drainfield failure in Florida yards.
  • Avoid parking vehicles or placing heavy objects on the drainfield. Compaction reduces soil absorption.
  • Do not irrigate or flood the drainfield area. In Dunnellon's climate, improper irrigation can saturate the field during rain events.
  • Plantings should be chosen with considerate root systems and kept well away from the field. When in doubt, consult your local extension office.
  • Use septic-safe products and limit harsh chemicals, solvents, and non-biodegradable items going down the drain. Regular maintenance, not additives, keeps systems healthy.

Water Use and Landscaping Practices

  • Space out laundry and use high-efficiency fixtures to reduce peak water load.
  • Run the dishwasher only when full, and avoid excessive hot water to limit emulsified fats and solids.
  • Fix leaks promptly; a small drip can waste gallons and stress the septic system over time.
  • Mulch around the drainfield keeps soil temperature stable and helps with moisture control.

Seasonal and Weather Considerations in Dunnellon

  • Florida's rainy season can saturate the drainfield quickly. Plan major water-using tasks for dry periods when possible.
  • After heavy rains or flooding, have the system inspected before resuming heavy use.
  • In drought or dry spells, monitor water use; the drainfield needs moisture to absorb efficiently. Do not force over-dry conditions by over-watering the landscape.

Early Warning Signs and What to Do

  • Signs: slow drains, gurgling pipes, wet spots or strong sewage odors near the tank or drainfield, lush green growth over the area.
  • If you notice signs:
    1. Conserve water and avoid heavy use until inspected.
    2. Limit driving or heavy loads over the drainfield.
    3. Call a licensed septic professional for an inspection and pumping if needed.

What not to do:

  • Do not pour oil, grease, solvents, paints, or chemical cleaners down drains.
  • Do not flush non-biodegradable items (baby wipes, wipes labeled flushable, feminine products) or large quantities of household chemicals.

Official Resources

Cost Expectations for Septic Services in Dunnellon

Septic Tank Pumping

  • What it includes: Removal of settled sludge and floating scum, tank interior inspection for cracks or failed baffles, proper disposal, and a basic written note on tank condition. Most jobs also include a lid check and basic field test of the inlet/outlet pipes.
  • Dunnellon-specific considerations: Dunnellon properties often have sandy soils and variable tank accessibility. Some older homes may have larger or deeper tanks requiring longer service times. If your tank is difficult to access or has multiple-compartment designs, costs can shift upward.
  • Typical Dunnellon cost: $300–$550 for standard 1,000–1,500 gallon tanks; $500–$800 for larger tanks (2,000 gallons or more). Disposal fees and any required lid resealing or baffle repairs may add small increments.
  • Official resources:

Camera Inspection of Sewer Lines and Jetting (where needed)

  • What it includes: Video inspection of interior plumbing lines and critical drain-field connections; targeted jetting or cleaning of a clog if found; report with found issues and recommended follow-up.
  • Dunnellon-specific considerations: Root intrusion and shifting soils in some Dunnellon neighborhoods can show up as line misalignments on camera; access points may be constrained in older homes.
  • Typical Dunnellon cost: $300–$600 for camera line inspection; jetting/additional cleaning $100–$250 if needed.
  • Official resources: https://www.epa.gov/septic'>https://www.epa.gov/septic, https://floridadep.gov/water/ostds

Drain Field Evaluation and Repair

  • What it includes: Diagnostic tests (e.g., dye tests, soil percolation review, pressure testing), identifying failing trenches or plugged lines, and repairs such as cleaning, trench repair, or partial pipe replacements.
  • Dunnellon-specific considerations: In Dunnellon, sandy soils can affect percolation results and repair strategies; seasonal groundwater and rain can influence performance and timeframes.
  • Typical Dunnellon cost: Diagnostic evaluation $200–$600. Minor repairs (tray, trench repair, or pipe cleanouts) $1,000–$3,500. More extensive repairs or partial field restoration $3,500–$8,000.
  • Official resources: https://www.epa.gov/septic'>https://www.epa.gov/septic, https://floridadep.gov/water/ostds

Drain Field Replacement or Mound System (if field is beyond repair)

  • What it includes: Removal of failing drain field sections, soil loading, installation of a replacement absorption area, backfill, and startup testing; in some sites a mound system is required.
  • Dunnellon-specific considerations: Soil depth and drainage in Dunnellon can necessitate alternate designs (e.g., shallow beds or mounds) and may require local permitting. Costs reflect excavation complexity and disposal of old materials.
  • Typical Dunnellon cost: $7,000–$20,000 for standard replacements; $15,000–$40,000+ for mound systems or complex sites.
  • Official resources: https://www.epa.gov/septic'>https://www.epa.gov/septic, https://floridadep.gov/water/ostds

Septic System Installation (New Systems)

Septic Tank Risers, Lids, and Accessibility Upgrades

  • What it includes: Installing or upgrading risers and secure, child-resistant lids to improve access for pumping and inspections; may include sealing and labeling for long-term maintenance.
  • Dunnellon-specific considerations: Homes with prior buried tanks or difficult access benefit most; upgrades can reduce service time and improve safety in storm-prone areas.
  • Typical Dunnellon cost: $450–$1,000 per tank (depending on number of risers, material, and labor).
  • Official resources: https://www.epa.gov/septic

Septic System Maintenance Plans (Annual or Multi-Visit Contracts)

  • What it includes: Scheduled pumping, inspections, line checks, and prioritized service windows; some plans include discounts on repairs and preferred scheduling.
  • Dunnellon-specific considerations: Local contractors may offer Dunnellon-specific plan packages that align with seasonal rainfall patterns and permitting cycles.
  • Typical Dunnellon cost: $150–$450 per year for basic plans; comprehensive plans $350–$750 annually.
  • Official resources: https://www.epa.gov/septic