Septic in Strafford, MO

Last updated: Mar 21, 2026

Strafford in the Ozarks has a practical, down-to-earth approach to homegrown wastewater, and that often means septic systems are the norm rather than the exception. If you've driven through newer subdivisions or older rural blocks here, you've likely noticed that city sewer lines don't reach every street, and many lots simply aren't set up for a centralized sewer hookup. That's where septic systems come into play—and they're a trusted, long-standing solution for Strafford homes.

Is septic common in Strafford? Should I expect septic if I own or buy a home? Yes to both. A large portion of Strafford homes operate on septic systems, especially those outside the core city sewer service area or on properties built before sewer lines were extended. If you own or are purchasing a home here, plan on septic being part of the discussion. Real estate transactions typically include a septic disclosure and a tank and drain-field assessment, so you'll know what you're dealing with before you close.

Why do homes here typically use septic systems? Because it's often the most practical and cost-effective way to manage wastewater in a rural-leaning layout. Strafford lots can vary widely in size and soil, and extending centralized sewer lines to every street isn't always feasible or affordable. Septic systems let homes process graywater and wastewater on-site, using the soil to filter and treat it safely. They've been a reliable choice for generations of Strafford residents, balancing upfront costs with long-term convenience when properly sized and maintained.

High-level explanation of why septic exists here: A septic system is essentially a small, local wastewater treatment solution. Waste enters a septic tank where solids settle and scum rises, then liquid effluent moves into an underground drain field where soil and microbes do the final polishing. In Strafford's mix of soils and property layouts, this on-site approach minimizes disruption to neighborhoods while protecting water quality and local groundwater.

What to know as a homeowner or buyer:

  • Expect septic to be part of the home's core systems and budget for routine pumping, inspection, and soil-field health.
  • Maintenance matters: schedule regular pumping, watch for slow drains or gurgling sounds, and avoid putting corrosive or non-biodegradable items down the drain.
  • Work with a local, reputable contractor who understands Strafford soils, local codes, and seasonal moisture patterns.

If you're unsure where your property's system stands, I'm here to help you assess, plan, and keep your septic running smoothly—so you can focus on enjoying your Strafford home.

Where Septic Systems Are Common in Strafford

Map of septic coverage in Strafford, MO

Geographic areas where septic is most common

  • Rural fringe and outlying parcels just outside the Strafford city limits, where sewer lines aren't available.
  • Subdivisions that were developed before municipal sewer was extended, or areas where extending the line isn't practical.
  • Properties with larger lots or acreage where connecting to a distant sewer main isn't cost-effective.
  • Hillsides, rolling terrain, or low-lying zones where gravity sewer installation is challenging or impractical.

Why Strafford's layout and history support septic use

  • Growth pattern: Strafford's expansion includes substantial rural residential pockets. Where public sewer isn't yet in place, onsite wastewater systems become the default option.
  • Soil and landform: Strafford sits on a mix of soils. Well-drained loams and sandy loams support conventional septic drain fields, while poorly drained soils, high water tables, or shallow bedrock push homeowners toward alternative designs. Local soil conditions strongly influence system type and placement.
  • Regulation and maintenance: Missouri regulates onsite wastewater through state and county programs. In areas without public sewer, homeowners rely on properly designed, installed, and maintained septic systems to protect drinking water and local streams. Local health departments help with permits, inspections, and compliance.

Common system types you'll see in Strafford

  • Conventional gravity septic systems on suitable soils: Most homes on proper soils use a standard septic tank plus a drain field, with regular maintenance.
  • Alternative systems for challenging soils: When soils aren't ideal, you'll encounter mound systems, sand-filter beds, or aerobic treatment units (ATUs) designed to provide effective treatment where traditional drain fields won't perform well.
  • Replacement and upgrades: Older properties may need field maintenance, tank replacements, or system upgrades to meet current code and performance expectations, especially if roots, high groundwater, or nearby structures affect the drain field.

Quick steps to confirm if your Strafford property uses septic

  1. Check with the Greene County Health Department (Environmental Health) to confirm whether your property is permitted for a septic system or connected to sewer. They'll have the official records for your parcel.
  2. Locate the obvious access points on your property: the septic tank lid and the drain-field area. Avoid digging near these zones and plan work with a licensed professional.
  3. If you're buying, remodeling, or making major changes, hire a licensed septic inspector to perform a site evaluation and, if needed, a perforation test to confirm soil suitability and system health.
  4. Review official guidance to understand design, setback, and maintenance requirements. For Missouri-specific information on onsite wastewater, see the Missouri Department of Natural Resources: [Onsite Wastewater Treatment Systems](For broader federal guidance, visit the EPA: [Septic Systems](
  5. U.S. Environmental Protection Agency — Septic Systems:

Septic vs Sewer: What Homeowners in Strafford Should Know

How septic and sewer systems work

  • Septic systems: A home septic system treats wastewater on site. Wastewater flows from the house into a septic tank, solids settle, and liquid effluent drains to a buried drain field. Regular pumping and proper maintenance keep them functioning.
  • Municipal/sewer systems: Wastewater is collected in a city or county sewer line and treated at a centralized facility. You pay a monthly sewer bill, and maintenance is handled by the utility.

How to tell which you have in Strafford

  • Check your most recent utility bill. A sewer bill indicates municipal sewer service; if you don't see one, you may rely on a septic system.
  • Look for street or right-of-way access points. A sewer connection typically has a curb stop or cleanout near the curb; a septic system will have a lid or access in your yard.
  • Consult property records or disclosures from the seller/builder. They'll note whether the home uses a septic tank or is connected to the local sewer.
  • Ask your local utility or the county health department. They can confirm service availability for your address.

Maintenance and cost considerations

  • If you're on a septic system:
    • Schedule pumped maintenance every 3–5 years (varies with tank size and household usage). A licensed septic service can inspect baffles, scum, and tank integrity.
    • Use water wisely: spread out laundry, fix leaks, and avoid excessive water that can overwhelm the drain field.
    • What to avoid flushing: grease, oils, diapers, wipes (even "flushable" products), chemicals, and solvents.
    • Protect the drain field: avoid heavy vehicles, heavy equipment, and deep-rooted plants directly over the drain area; plant grasses rather than trees with invasive roots.
  • If you're on municipal sewer:
    • Expect a steady monthly bill that may rise over time with rate adjustments. Budget for potential rate increases.
    • Be mindful of what you put down the drain; improper disposal can tax the system and raise costs for everyone.
    • When toilets or drains back up, contact the utility first, then a plumber if needed.
  • Quick-tip for both paths: keep a simple system map (tank location, drain field, cleanouts) in a home file or digital note for easy reference during maintenance or emergencies.

Signs of trouble and what to do

  • Slow drains, gurgling toilets, or sewage odors in the yard or home.
  • Wet spots, lush growth, or soggy areas over the drainage area (for septic systems).
  • Water backing up into sinks or tubs after normal usage.
  • If you notice these, schedule a professional inspection promptly—early diagnosis can prevent costly damage. For septic issues, call a licensed septic contractor; for sewer issues, contact the local utility.

When to connect to sewer or replace a failed system

  1. Confirm service availability for your address with the local utility or county health office.
  2. Obtain required permits and environmental approvals per Strafford/Greene County guidelines.
  3. Get cost estimates for connecting to sewer or upgrading/replacing a failing septic system.
  4. Factor in disruption, excavation, and landscape restoration in your planning.
  5. Schedule work with licensed professionals and coordinate with local authorities to minimize downtime.

Resources

  • EPA: Septic Systems —

Linking to official guidance helps ensure you have state- and federal-backed information during planning, maintenance, or any decisions about septic versus sewer in Strafford.

Typical Septic System Types in Strafford

Conventional septic system

  • How it works: A buried septic tank collects waste, solids settle, and clarified effluent exits to a network of perforated pipes in the drain field. Gravity or simple distribution is used to move wastewater through the field into the soil.
  • What you'll notice: The most familiar setup for many Strafford homes; typically the least expensive to install.
  • Pros/cons:
    • Pros: Familiar design, reliable when soil and depth permit.
    • Cons: Performance depends on adequate soil depth and proper drain-field size; poor soils or high water tables can require upgrades.

Pressure distribution system

  • How it works: After a septic tank, effluent is pumped to evenly distributed laterals across the drain field, rather than relying on gravity alone.
  • Why homeowners choose it: More uniform dosing in long or challenging drain fields; helps prevent premature clogging of trenches.
  • Maintenance notes: Pump and control panel should be inspected regularly; keep the dosing chamber accessible and free of clogs.

Mound system

  • How it works: When native soil isn't suitable, a raised sand bed (mound) is built above the ground with a dosing system to move effluent through a sand layer before it enters the soil.
  • Where it's used: Common in Strafford when the soil depth is shallow or the groundwater table is high.
  • Pros/cons:
    • Pros: Allows treatment where conventional systems can't.
    • Cons: Higher initial cost, more space required, needs ongoing professional maintenance.
  • Maintenance notes: Regular inspections and soil/planting checks around the mound; avoid heavy vehicles on or near the mound.

Sand filter and other secondary treatment systems

  • How it works: After the septic tank, effluent is pumped through a sand filter or a similar treatment bed before entering the soil, providing an extra treatment step.
  • When it's a good fit: Areas with more stringent effluent requirements or limited drain-field area.
  • Pros/cons:
    • Pros: Improved effluent quality; additional treatment can extend drain-field life.
    • Cons: Higher complexity and upkeep; may require more energy for dosing.
  • Maintenance notes: Periodic filter/backwash or media maintenance per the designer's plan; monitor for clogging.

Chamber systems

  • How it works: Replaces gravel with continuous plastic chambers that create a wider, shallow drainage area connected to the septic tank.
  • Benefits: Lighter, often faster to install, and can be cost-competitive.
  • Considerations: Requires proper grading and protection from compaction; rely on manufacturer guidelines for spacing and soil compatibility.
  • Maintenance notes: Regular inspections of chambers and lateral lines; avoid root intrusion.

Drip irrigation and evapotranspiration (ET) beds

  • How they work: Dosed lines or surface beds distribute effluent to plants or soil in a controlled way, sometimes using evapotranspiration processes.
  • Typical use: Less common in Strafford, but installed in specific landscape or climate situations; usually only where approved by the local health authority.
  • Pros/cons:
    • Pros: Potential water reuse and landscape integration.
    • Cons: Higher design, monitoring, and maintenance requirements; requires ongoing professional oversight.
  • Maintenance notes: Track emitters, inspect for leaks, and follow a licensed designer's maintenance plan.

What to expect in Strafford-area soils and regulations

  • Local considerations: Soil type, depth to groundwater, and seasonal moisture affect which system is suitable. In many cases, the county health department and a licensed septic designer will determine the best option for your site.
  • Permitting and design: Strafford properties typically require a professional design and permit approval before installation.
  • Regular care: All system types benefit from a long-term maintenance plan and timely pumping when the tank is full.

Maintenance and planning steps (quick guide)

  1. Have your site evaluated by a licensed septic designer for soil and drainage suitability. 2) Confirm permit requirements with the local health department. 3) Choose a system type based on soil, space, and budget. 4) Schedule routine inspections and pump-outs; protect the drain field from heavy loads and construction.

Official resources

  • EPA Septic Systems:
  • Missouri Department of Natural Resources (onsite wastewater treatment systems):

Common Septic Issues in Strafford

Common issues seen in Strafford homes

  • Overloading the system with solids and kitchen fats, oils, and grease. Solids accumulate in the tank faster than the outlet can handle, leading to scum buildup, reduced capacity, and drain-field overload.
  • Drain-field saturation after heavy rains or rapid snowmelt. In clay-rich Strafford soils with higher water retention, the absorption field can stay wet longer, preventing proper effluent dispersal.
  • Tree roots invading laterals and the septic tank. Large shade trees or established root zones near leach lines can crack pipes and divert flow, causing backups or surface effluent.
  • Improper maintenance and long pumping intervals. Skipping inspections or pumping (typically every 3–5 years for a family of four, depending on usage) increases the risk of solids reaching the drain field.
  • Use of non-septic-friendly products and excessive water use. Chemical cleaners, solvents, and flushable wipes disrupt beneficial bacteria; simultaneous, high-volume water use overwhelms the system.
  • Aging components and failed components. Cracked lids, corroded or leaking tanks, damaged baffles, or collapsed drain-field trenches reduce treatment effectiveness.

Strafford-specific soil and groundwater considerations

  • Clay-rich soils and variable percolation rates. Strafford-area soils often slow absorption, which makes drain fields more prone to saturation during wet seasons.
  • Shallow groundwater and seasonal water tables. In spring and after heavy rain, perched water can rise into the drain field, increasing the chance of effluent surfacing or odors.
  • Proximity to streams and wells. Strafford properties near water features may face tighter setback considerations and heightened need for proper containment and maintenance to protect groundwater quality.
  • Seasonal rainfall patterns. Rapid changes between dry spells and downpours can stress systems, especially older installations or undersized fields.

How to recognize a failing or stressed system

  • Surface indicators: wet spots, spongy ground, or a sewer odor around the drain field area.
  • Plumbing symptoms: slow drains, gurgling toilets, or backups in sinks and tubs.
  • Tank indicators: standing water or sludge in the outlet pipe or baffle, or a tank that appears to be full sooner than expected.
  • Unexpected visitors: lush, green patches over the drain field while the rest of the yard is average color can signal effluent discharge.

Maintenance and prevention steps you can take now

  1. Schedule regular pumping and inspections.
    • Aim for a professional evaluation every 3–5 years; more often for large households or homes with significant water usage.
  2. Practice septic-friendly routines.
    • Use minimal, approved cleaners; avoid flushing wipes, pads, diapers, or chemicals that kill beneficial bacteria.
  3. Manage water wisely.
    • Stagger laundry and dishwashing; fix leaks; install water-saving fixtures to reduce hydraulic load on the system.
  4. Protect the drain field.
    • Keep heavy machinery and vehicles off the field; plant only shallow-rooted vegetation near the system; divert roof and surface water away from the area.
  5. Monitor and address early signs promptly.
    • Don't ignore odors, damp patches, or slow drains—call a licensed septic professional for an on-site assessment.

Steps to take if you suspect trouble

  • Do a quick check: note smells, wet areas, and drainage behavior in the house.
  • Limit water use for 24–48 hours to reduce load on the system.
  • Contact a licensed septic provider for diagnostics, pumping, and, if needed, field repair or replacement.

Resources and official guidance

  • Missouri Department of Natural Resources – On-site Wastewater Program:
  • U.S. Environmental Protection Agency – Septic Systems:

Septic Inspection, Permits & Local Oversight

Who Oversees Septic Systems in Strafford, MO

  • Local oversight is handled primarily by the Greene County Health Department, which issues permits, conducts inspections, and provides guidance on on-site wastewater systems.
  • State standards come from the Missouri Department of Natural Resources (DNR) and the Missouri Department of Health & Senior Services (DHSS), which set rules for design, installation, and maintenance.
  • The City of Strafford may require general building permits or related approvals for work near septic systems; check with city hall or the building department for any local requirements.

Permits and When You Need Them

  • Before installing or significantly upgrading an on-site wastewater system, you generally must obtain a permit from Greene County Health Department.
  • Permits cover the evaluation, design approval, soil testing, tank installation, distribution lines, and any required setbacks.
  • Replacement or major repairs often require a new permit and a system evaluation if site conditions have changed.
  • How to start:
    1. Gather: site plan or survey, soil evaluation results, system design, contractor/engineer details, lot size, setbacks from wells and structures.
    2. Contact Greene County Health Department to confirm required forms and fees.
    3. Submit your application with plans; wait for written approval before beginning work.

Inspection Process

  • Inspections are typically scheduled at key milestones: pre-backfill, after tank installation, after final cover, and sometimes for final commissioning or testing.
  • Your licensed septic installer usually coordinates inspection scheduling with the health department.
  • Expect inspectors to check tank integrity, proper leach-field or mound installation, pump chamber access, effluent lines, setback compliance, and proper labeling and access.
  • Quick timeline:
    1. Permit approved and plans finalized.
    2. Schedule inspections with Greene County Health Department.
    3. On-site inspection; note any corrections required.
    4. Complete final inspection and close out permit.

Real Estate Transactions: Inspections & Disclosures

  • For home sales, a septic system evaluation by a licensed inspector is commonly recommended or requested by buyers; certain counties or lenders may require it as part of the closing process.
  • Missouri requires truthful disclosures about the septic system condition; keeping pump records, maintenance history, and repair notes helps protect both seller and buyer.
  • If the system has a history of problems, plan for potential repairs or replacement discussions early in the transaction.

Maintenance, Records & Fees

  • Keep a dedicated file with pump-out dates, maintenance visits, and any repairs or upgrades.
  • Regular pumping is typically advised every 3–5 years (or per manufacturer/installer guidance) depending on household size, water usage, and system type.
  • Record-keeping simplifies future inspections and transfers; include dates, contractor names, and system components.
  • Fees vary by permit type and inspection stage; contact Greene County Health Department for current amounts and payment methods.

Helpful Resources

Septic Maintenance for Homes in Strafford

Strafford-specific soil and water considerations

  • Strafford sits in Greene County, where soil conditions can vary from sandy pockets to clay-heavy zones. Clay-rich soils drain more slowly, which can increase drain-field saturation after heavy rains.
  • The local climate brings bursts of rainfall that can temporarily overwhelm a septic drain field. Plan for extra protection during wet seasons and after storms by keeping heavy runoff away from the drain field.
  • Tree roots and landscape features near the septic system are a common Strafford concern. Roots can clog or damage lines and the drain field, so keep trees and large shrubs out of the setback zone and plant shallow-rooted grasses instead.

Routine maintenance checklist

  • Inspect annually (or more often if you notice odors, gurgling drains, or damp spots near the system).
  • Have the tank professionally inspected every year or two, with pumping based on usage and tank size (see Pumping guidance below).
  • Clean or replace the effluent filter if your system has one; do this as recommended by your installer.
  • Keep a maintenance log: dates of inspections, pumping, and any repairs.

Pumping frequency and what drives it

  • A typical 1,000-gallon tank serving a 2–4 bedroom Strafford home with average daily use is often pumped every 3–4 years.
  • If your home has more occupants, uses a garbage disposal heavily, or has a smaller tank, expect to pump more frequently (roughly every 2–3 years). If you have a larger tank (1,200–1,500 gallons) or quiet usage, your interval may extend.
  • Your licensed septic service can tailor the schedule to your actual usage and tank size. Keep copies of pumping records for reference.

Drain-field protection and daily habits

  • Never drive or park on the drain field. Even light vehicles can compact soil and damage the leach field.
  • Keep gutters and surface runoff away from the septic area; redirect downspouts and ensure grading doesn't channel water into the drain field.
  • Plant only shallow-rooted grasses over the drain field; avoid trees or deep-rooted shrubs within the setback.
  • Use water efficiently inside the home. Spreading out use (especially laundry and dishwashing) helps prevent overwhelm during peak periods.

What to flush and what to avoid

  • Flush only human waste and toilet paper.
  • Avoid flushing wipes (even "flushable" ones), feminine products, diapers, coffee grounds, cat litter, grease, oils, paint, solvents, pesticides, and chemical cleaners.
  • Be mindful of garbage disposals; they increase solids reaching the tank. If you rely on a disposal, plan more frequent pumping and solids management.

Seasonal considerations for Strafford

  • In winter, keep an eye on backups or odors and ensure vent openings are clear. Frozen ground can slow infiltration, so proper insulation and spacing from the drain field are important.
  • After heavy rains or rapid snowmelt, check for surface dampness or depressions near the system. If you notice pooling, call a pro to assess saturation and field health.

Steps for a proactive maintenance visit (typical sequence)

  1. Schedule with a licensed septic contractor (MO-licensed professionals coordinates and certifies work).
  2. Technician locates and uncovers access lids, checks for odors, and tests system components.
  3. Tank is pumped if solids have reached the recommended level.
  4. Effluent filter (if present) is cleaned or replaced; baffles and pipes are inspected.
  5. Drain field is visually inspected (no digging unless needed); check for signs of saturation.
  6. Documentation is updated: date, tank size, location, pumping frequency, and recommendations.

Local and official resources

  • Missouri Department of Natural Resources – Onsite Wastewater Treatment Systems (OWTS):
  • Greene County Health Department – Onsite Wastewater Management (local guidance and permits):
  • U.S. EPA Septic Systems Information: https://www.epa.gov/septic
  • If you need contractor verification, look for MO-registered septic installers and inspectors through state or county listings.

Common Strafford failure signals

  • Persistent gurgling, slow drains, sewage odors, or damp spots above or around the drain field.
  • Backups in toilets or sinks after heavy usage or rainfall.
  • Standing water in the yard over the drain field area. If you notice these signs, contact a licensed professional promptly.

Cost Expectations for Septic Services in Strafford

Septic Tank Pumping and Cleaning

  • What it includes: removing sludge and scum, cleaning the tank baffles and manhole access, and checking for signs of damage or leaks. In Strafford, access can influence price (driveways, tight clearances, and shallow tanks are common considerations). A typical pump-out also includes a quick inspection of outlet tees and sludge depth.
  • Strafford specifics: groundwater and soil conditions in Greene County can affect how often pumping is recommended and may require coordinating with weather windows.
  • Typical cost in Strafford: roughly $250–$450 per service; average around $300.

Septic System Inspection and Certification

  • What it includes: visual inspection of tanks, lids, and access ports; baffle integrity check; effluent filter status; leach-field activity; and a review of maintenance records. For buyers or lenders, many Strafford transactions favor a formal certification.
  • Strafford specifics: inspections may trigger recommendations for camera inspection or dye tests if there are red flags.
  • Typical cost in Strafford: basic inspection $150–$350; more thorough certification or comprehensive reports $400–$800.

Camera Inspection and Locator Service

  • What it includes: CCTV video of lines from the house through the tank to the leach field; locating buried components; identifying cracks, blockages, tree-root intrusion, or incorrect slope.
  • Strafford specifics: older Strafford homes or lots with dense development can benefit from camera surveys to avoid unnecessary excavation.
  • Typical cost in Strafford: $400–$900 depending on length of run and access complexity.

Design, Permitting, and Engineering

  • What it includes: site evaluation, soil testing (percolation tests where required), system design, and help with permit applications. This is essential for new installs or system upgrades in Strafford.
  • Strafford specifics: soil variability in Greene County can drive more detailed designs or alternate system types (e.g., mound vs. conventional) and may require engineering stamps.
  • Typical cost in Strafford: design $2,000–$5,000; permit-related fees $200–$900 (varies by project and jurisdiction).

New System Installation

  • What it includes: site prep, trenching or mound construction, tank placement, piping, backfill, initial testing, and system startup. Includes coordination with building timelines and permitting.
  • Strafford specifics: higher upfront costs when a mound or specialty system is needed due to soil limits or high water table common in some parts of Greene County.
  • Typical cost in Strafford: conventional system $10,000–$25,000; mound or specialty systems $20,000–$40,000+.

Leach Field Repair and Replacement

  • What it includes: diagnosing failed fields, replacing damaged trenches, reinstating proper grading and drainage, and sometimes installing a new distribution or expansion area.
  • Strafford specifics: repair often depends on soil limits and drainage patterns; repairs can be lengthy and may require temporary wastewater management on-site.
  • Typical cost in Strafford: $8,000–$25,000 (more for large or heavily degraded fields).

Drain Field Maintenance and Line Cleaning

  • What it includes: root removal, hydro-jetting, and cleaning of laterals and lines to restore flow and prevent backups.
  • Strafford specifics: tree lines and root encroachment are common in the area; preventative maintenance can extend field life.
  • Typical cost in Strafford: $150–$900 per session, depending on extent of cleaning and access.

Real Estate Transactions and Closing Inspections

  • What it includes: a summarized septic health check tailored for quick turnarounds during home sales, often paired with a full inspection or camera survey if needed.
  • Strafford specifics: many buyers require documentation aligned with local lending standards; timing is critical.
  • Typical cost in Strafford: $200–$600 for a streamlined package; higher if coupled with camera work.

Emergency and Maintenance Plans

  • What it includes: after-hours service, diagnostic visits, and optional annual maintenance agreements that bundle pumping, inspections, and priority scheduling.
  • Strafford specifics: emergency calls may incur a higher trip charge, and weather can influence availability.
  • Typical cost in Strafford: trip charge $100–$250; hourly rates $100–$250; maintenance plans $150–$350/year.

Steps to plan your Strafford septic project

  1. Identify the needed service (pump, inspect, design, or repair) based on symptoms and records.
  2. Request quotes from at least two Strafford-area providers and confirm permit requirements.
  3. Schedule a site visit and discuss access, soil conditions, and any Strafford-specific constraints.
  4. Review the written estimate, including scope, timeline, and any potential contingencies.
  5. Confirm a maintenance plan or service calendar to minimize future surprises.

Official resources

Real-world notes (local context)

  • Costs are influenced by soil type, water table, access, and the need for any specialty systems (mound, pressure distribution, or advanced treatment). Prices shown are typical ranges for Strafford-area work and can vary by contractor and site specifics.