Septic in Culver, OR

Culver sits in central Oregon's high desert, where open skies, farms, and close-knit neighbors shape everyday life. For many homes here, a private septic system isn't just common—it's the practical, reliable way to manage wastewater in a spread-out community.

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

Yes. In Culver, most houses rely on on-site septic systems. The local sewer lines don't extend to every street or subdivision, and building or extending a municipal sewer hookup isn't always affordable or feasible. If you're buying a home here, you should indeed expect a septic system, and you'll want to review its history as part of your decision.

Why homes typically use septic systems in Culver

High-level explanation (why septic exists here): Culver's layout, with broad lots and rural infrastructure, makes on-site treatment a sensible option. Extending centralized sewer service to rural neighborhoods can be costly and disruptive, while properly designed septic systems can treat household wastewater on the property itself. Local soils and groundwater conditions often support safe effluent disposal when the system is properly sized and well maintained. In short, septic systems exist here because they're practical, cost-effective, and well-suited to our community's footprint.

How a septic system works (a quick overview)

• A septic tank holds and begins to separate solids from wastewater.
• Treated liquid (effluent) flows to an underground leach field where it seeps into the soil.
• The soil and natural processes finish treating the water before it returns to the ground.
• Regular maintenance ensures the tank isn't overloaded and the field remains healthy.

What to know if you own or are buying a home in Culver

• Expect a septic system; ask for pumping and service records, and confirm the tank size and location.
• Plan on regular pumping every 3–5 years (or as advised by the local pro) depending on usage and tank size.
• Watch for warning signs: slow drains, gurgling sounds, damp spots or lush patches over the drain field, or sewage odors.
• Protect the system: limit drain-field disruption, plant shallow-rooted vegetation nearby, and conserve water to reduce load.

If you're navigating a Culver purchase or long-term upkeep, you're not alone—a knowledgeable neighbor who's also a septic pro can help you make practical, affordable choices that keep everything running smoothly.

Where Septic Systems Are Common in Culver

Rural outskirts and agricultural properties

In Culver, the practical reality is that most homes outside the core town rely on on-site septic systems. Parcels commonly range from a quarter to several acres, with homes tucked along county roads rather than clustered in dense neighborhoods. The limited reach of centralized sewer lines into these rural areas makes septic the standard wastewater solution for new and existing homes alike. Agricultural properties with farmhouses on large lots also depend on septic to manage waste on-site without tying into a distant municipal system.

• Typical patterns: dispersed single-family homes, ranches, and small farms on larger lots.
• Shared infrastructure: fewer shared sewer mains, more opportunity for individual septic design and maintenance.

Urban segments and limited sewer expansion

Within Culver's city limits or along certain corridors, some sewer service exists, but growth remains largely rural. Even where a municipal sewer line is present, not every property is connected, and many newer developments near the town still rely on septic because extending sewer lines across a wide area is costly and time-consuming. Septic systems remain common where centralized service hasn't been extended or funded for expansion.

• Practical implication: if you live outside the nearest sewer main, septic is the norm rather than the exception.
• Key consideration: proximity to the town's sewer network determines your options, but many Culver properties continue to use on-site systems.

Soil, terrain, and groundwater realities in Culver

Soil conditions and terrain strongly influence septic suitability across Culver. Central Oregon soils range from sandy loams that drain readily to denser clays or rocky, shallow layers that complicate leach fields. In some parcels, shallow bedrock or high groundwater near wetlands or streams limits where a septic system can be sited. The climate—with dry summers and wet winters—also affects drainage and seasonal saturation, making proper design and placement critical to long-term performance.

• Permeability matters: well-drained soils support reliable drainfields; poor soils may require alternative designs.
• Zoning and topography: hillsides and slope can constrain setback distances and field layout.

Lot size and design considerations

Lot size and layout influence how easily a septic system can be sited to meet setbacks from wells, property lines, and water features. In Culver, the prevalence of larger lots generally makes it easier to accommodate a compliant septic system with adequate leach field area. Dense, small lots would push homeowners toward upgraded designs or, where available, municipal service.

• Design flexibility: uneven terrain or irregular parcels may need specialty design to maximize drainage and avoid nuisance issues for neighbors.
• Compliance driver: Oregon DEQ guidelines shape how sites are chosen and how systems are installed and inspected.

How to confirm your Culver property relies on septic

1. Check with the local authority and official resources to confirm sewer availability for your address. Start with the Oregon DEQ Onsite Wastewater Program for statewide guidance.
2. Inspect for conventional septic indicators on the property: a buried tank lid, access risers, and a drainfield area. Avoid digging near wells or streams without professional guidance.
3. Schedule a licensed septic professional or inspector to review site suitability, system condition, and compliance with setbacks and maintenance requirements. For general wastewater guidance, see EPA's septic system information: https://www.epa.gov/septic
4. If you're seeking broader, official planning context, you can also reference Oregon State University Extension resources on onsite wastewater management: https://extension.oregonstate.edu

Septic vs Sewer: What Homeowners in Culver Should Know

How the two systems work in simple terms

Sewer: waste water from your home travels through a network of pipes to a municipal treatment plant. You're billed by a utility for monthly service, and the city or county staff handle maintenance of the sewer lines and treatment facilities. Septic: your home relies on an on-site septic system you own and maintain. Waste flows into a buried tank, solids settle, liquids leach to a drainfield, and the system must be pumped and inspected periodically.

• Key differences:
  • Ownership: public utility versus private on-site ownership
  • Maintenance: utility maintains sewer lines and plant; you maintain septic components
  • Financial: monthly sewer bill vs occasional pumping and repair costs

Is sewer available where you live in Culver?

To know your status, start with local utilities and permits:

1. Contact the Culver city public works or the relevant sewer utility to confirm service at your address.
2. If sewer is available, you'll likely be connected automatically or upon a formal request, and you'll receive a monthly bill.
3. If sewer is not available, your home will rely on a septic system that you're responsible for maintaining.

What this means for maintenance

• If you're on septic:
  • Schedule a septic pumping every 3–5 years (more often if the tank is small or usage is high).
  • Have the tank inspected around pumping intervals to check baffles, leaks, and filters.
  • Use water efficiently and avoid dumping oils, solvents, or non-biodegradable products.
• If you're connected to sewer:
  • The utility handles much of the system maintenance, but you still control what goes down the drain and can prevent blockages.
  • Be mindful of grease, wipes, medications, and chemicals.

Costs and long-term considerations

• Septic system costs:
  • Initial install or upgrade can be substantial; ongoing pumping and occasional repairs add up over time.
  • Pumping typically costs several hundred dollars, varying by tank size and local rates.
• Sewer connection costs:
  • If your home is not yet connected, you may face a one-time hook-up fee and monthly sewer charges.
  • Long-term, sewer service is predictable, but rates can change with utility budgets.

Practical tips for Culver homeowners

• Map and label all septic components; keep a record of pumps and inspections.
• Protect the drainage field: keep heavy equipment off the area, plant only shallow-rooted vegetation, and direct roof drainage away from it.
• Use water-saving fixtures and spread out high-water-use tasks (laundry, dishwashing) to reduce load.
• If you're unsure about service status, consult official sources before working on the system.

Official resources

• EPA: Septic Systems -
• City of Culver (official):

Typical Septic System Types in Culver

Conventional gravity septic systems

• How they work: A buried septic tank separates solids from liquids, with effluent flowing by gravity into a buried drain field of perforated pipes and gravel/soil.
• When they're a fit: Common for many single-family homes with adequate soil depth and a gradual slope to the drain field.
• Pros and cons: Simple design, generally lower upfront cost; performance depends on soil quality and proper maintenance (pumping every 3–5 years is typical, depending on usage and tank size).
• Maintenance notes: Keep the drain field clear of heavy traffic, landscaping, or vehicles; avoid planting trees or shrubs over the field to protect root systems.

Low-Pressure Dose (LPD) / pressure distribution systems

• How they work: A submersible pump delivers small doses of effluent under pressure to a network of distribution lines, improving even distribution in marginal soils.
• Why Culver homeowners choose them: Helpful when soil percolation is uneven or when the drain field is long or narrow.
• Pros and cons: More efficient use of available soil; higher maintenance due to pumps and control components; requires a reliable power supply and annual service checks.
• Maintenance notes: Regular pump inspections and a service plan with an licensed installer or service provider.

Mound systems

• How they work: A shallow trench system built above grade with engineered fill material, designed to provide adequate separation between the drain field and groundwater.
• When they're used: In Culver soils with shallow groundwater, high seasonal moisture, or poor native infiltration.
• Pros and cons: Can enable wastewater disposal where conventional trenches won't meet soil depth requirements; higher construction cost and more upkeep.
• Maintenance notes: Regular inspections and adherence to DEQ guidelines; ensure vegetation doesn't disrupt the mound cover.

Sand filter and Aerobic Treatment Units (ATU)

• How they work: ATUs add oxygen to enhance bacterial breakdown before the effluent reaches the drain field; some systems include a sand filter to polish water.
• Why they're used: Helpful in soils with limited treatment capacity or where space is tight; can improve effluent quality before disposal.
• Pros and cons: Higher treatment performance; more complex systems require ongoing maintenance, electricity, and professional servicing.
• Maintenance notes: Schedule routine service visits; keep outlets and vents clear; use approved cleaning agents to avoid harming beneficial bacteria.

Evapotranspiration (ET) beds

• How they work: Plants and soil layers evaporate water and take up moisture, reducing the volume reaching the groundwater.
• When they're appropriate: In dry, well-drained soils with adequate sun and plant growth; less common in many Oregon sites but possible in specialized conditions.
• Pros and cons: Low groundwater impact when well-suited; limited applicability in wetter or shaded Culver properties; monitoring required.
• Maintenance notes: Keep vegetation balanced and monitor plant health to ensure evapotranspiration remains effective.

Drip irrigation / effluent reuse systems

• How they work: Treated effluent is distributed through drip lines to landscape plantings, often after additional polishing steps.
• Pros and cons: Efficient water use and landscape irrigation potential; higher initial cost and strict design/permit requirements.
• Maintenance notes: Regular filter and line checks; protect drip lines from root intrusion and physical damage.

Holding tanks and other specialty systems

• How they work: Tanks store waste when discharge to a conventional drain field isn't possible; typically require frequent hauling or special permits.
• Pros and cons: Useful in restricted sites or transitional situations; not a long-term substitute for a standard onsite system.
• Maintenance notes: Strict adherence to local regulations and disposal requirements; plan for ongoing management.

Steps to determine the right system for Culver

1. Get a professional site evaluation and soil assessment to understand permeability, depth to groundwater, and rock content.
2. Check local regulations and DEQ requirements for Culver/Jefferson County (Onsite Wastewater Program).
3. Work with a licensed onsite system designer or civil engineer to select a feasible option compatible with your lot and future needs.
4. Obtain permits and have the system designed, installed, and inspected by licensed professionals.
5. Plan for ongoing maintenance, including routine pumping and annual service checks.

Official resources:

• Oregon Department of Environmental Quality – Onsite Wastewater Program:
• U.S. Environmental Protection Agency – Septic Systems: https://www.epa.gov/septic

Common Septic Issues in Culver

Culver-specific soil and climate factors

• Seasonal water table and spring runoff can overload drainfields that are already marginal, leading to surface drainage and slow absorption.
• Soils around Culver vary, with pockets of clay or shallow rock that hinder percolation and increase the risk of backups or pooling in the leach field.
• Tree roots near the septic system are common in mature yards, potentially clogging pipes and components.
• Freezing temperatures and rapid cold snaps can slow wastewater movement through the tank and drainfield, especially if the system is already stressed.
• Heavy irrigation in summer months or frequent outdoor water use can push a marginal system past its design capacity.

Common symptoms homeowners notice

• Slow flushing, toilets and sinks taking longer to clear, and gurgling sounds in plumbing.
• Wet, soggy spots, strong odors, or surfacing effluent in the drainfield area.
• Lush, unusually green grass above the drainfield compared with surrounding lawn.
• New sounds or smells near the tank lid or away from the house, indicating tank or line issues.
• Short-lived backups after heavy rainfall or during rapid snowmelt seasons.

Drainfield and soil problems that are typical in Culver

• Perched water table or saturated soils reduce infiltration, increasing the chance of effluent backup.
• Compacted soils or shallow bedrock limit wastewater dispersion, forcing effluent to seek alternate paths or surface areas.
• Root intrusion from nearby trees or shrubs can crack or clog pipes and tees.
• Aging components (pump tanks, lids, floats) are more likely to fail under seasonal stress, especially when groundwater is high.

Practical maintenance steps for Culver homeowners

1. Map and know your system type
2. Identify tank size, number of chambers, and whether you have a drainfield or mound system.
3. Note service dates and recommended pumping intervals from the installer or a licensed purveyor.
4. Establish a pumping and inspection routine
5. Schedule pumping every 3–4 years for conventional systems; more often for systems with high solids production or older tanks.
6. Have a professional inspect after winter or during shoulder seasons when groundwater is high or drainage is stressed.
7. Protect the drainfield area
8. Avoid parking, driving, or installing heavy structures over the drainfield.
9. Keep trees and aggressive plant roots at a safe distance; consider root barriers if trees are near the system.
10. Minimize irrigation directly over the drainfield; distribute outdoor water evenly and reduce runoff toward the system.
11. Manage water and waste responsibly
12. Space out heavy water uses (garbage disposal, laundry, and bathing) to prevent overloading the system.
13. Fix leaks promptly; even small drips can add up to significant daily flow.
14. Use septic-safe products and avoid flushing non-biodegradable items, fats, oils, medications, or chemicals.
15. Monitor and respond to warning signs
16. If you notice odors, standing water, or backups, stop using the impacted fixtures and contact a licensed septic professional promptly.
17. After large storms or rapid snowmelt, have the system checked if you observe pooling or new damp areas around the drainfield.
18. Seasonal considerations specific to Culver
19. In spring, monitor for surface pooling and groundwater rise; consider delaying heavy irrigation or landscaping projects until soils dry.
20. In late fall, protect the system from freezing by ensuring access covers are secure and the system is not overloaded before winter.

When to call a professional

• Persistent odors near the tank, drainfield, or plumbing.
• Visible effluent pooling, gurgling sounds, or backups that do not resolve with a standard pump-out.
• Unusual wet spots on the lawn or new, spreading damp areas around the system.
• Recent heavy rain, rapid thaw, or drought conditions that might affect soil moisture and drainage.

Local resources and official guidance

• Oregon Department of Environmental Quality (DEQ) Onsite Wastewater Treatment Systems (OWTS) program:
• Oregon Health Authority Onsite Wastewater Systems guidance:

Septic Inspection, Permits & Local Oversight

Who regulates septic systems in Culver, OR

In Culver, septic systems are overseen primarily at the county level (Jefferson County) with guidance from the Oregon Health Authority. Local public health staff review plans, issue OSDS permits, schedule inspections, and confirm that installations meet state and local codes. Always start with your county health department to confirm the exact permit steps for your property.

Permits you may need

• New system installation: permit required before any digging or construction begins.
• System replacement or substantial repair: permit required for changes to tank size, leach field, or trenches.
• Abandonment or decommissioning of an old system: permit and final inspection needed.
• System upgrades to meet updated setbacks or performance standards: permit required to authorize changes.
• Subdivision or property transfers that involve an on-site wastewater system: permits may be triggered as part of closing or disclosures.

The permit and inspection process (step-by-step)

1. Verify need and locate the right office: contact Jefferson County Public Health Environmental Health or your county's permit office to confirm the exact permit type and forms for Culver.
2. Prepare a basic plan: have a licensed OSDS designer or engineer prepare a schematic of the proposed system, including lot size, soil conditions, and proposed drain field.
3. Submit for plan review: turn in the application, any site evaluation reports, soil tests, and design plans. The county will review for code compliance and suitability.
4. Receive permit approval and schedule installation: once plans are approved, the installed system must be done by a licensed contractor and inspected at key milestones.
5. Pass the final inspection and obtain the permit final: after installation, a county inspector will verify proper installation, function, and setbacks; you'll receive final approval once everything meets code.

What to have ready before you apply

• Property address, parcel number, and property deed (for ownership and lot size).
• Any previous on-site sewage disposal records, if available.
• Soil test results or percolation test reports (if you have them).
• A proposed layout from a licensed OSDS designer or contractor.
• Names and contact information for the licensed installer and designer.

Special notes for home buyers or sellers

• If you're buying, expect a septic system disclosure as part of the real estate transaction. A county OSDS inspection or review may be advised or required to protect your investment.
• If you're selling, be prepared to provide any known OSDS records and permits. Honest disclosure can prevent delays at closing.
• Routine maintenance (pump-outs, inspections) isn't typically a permit issue, but major repairs, replacements, or system upgrades will require county review and permitting.

Helpful resources

• Oregon Health Authority – On-site Sewage Disposal (OSDS) program:
• Oregon Department of Environmental Quality – Onsite Wastewater (OSDS) program:
• Local guidance: for exact local forms, fees, and scheduling, contact Jefferson County Public Health Environmental Health (the county office responsible for OSDS permits and inspections in Culver) and follow their instructions for your specific project.

Septic Maintenance for Homes in Culver

Culver-specific climate and soils

Culver sits in a semi-arid, high-desert area where irrigation for landscaping and farming can affect how your septic system behaves. Seasonal groundwater rise and soil variability mean the drain field can experience wetter conditions at certain times of the year. Work with a licensed septic professional who understands local soil conditions, groundwater patterns, and Culver's permitting requirements. Local health departments and state guidelines are the best sources for soil-testing and setback rules. Official guidance can help you plan for longer-term reliability.

Regular maintenance plan

• Pumping: A typical residential septic tank should be pumped every 3–5 years with a standard 1,000–1,500-gallon tank. In Culver, frequent irrigation and larger families may shorten this interval, so factor water use and household size into your plan.
• Inspections: Have a licensed inspector evaluate baffles, tank integrity, and the condition of any effluent filters at least every 1–2 years. Tighten up recommendations from the inspector about pumping schedules and component replacements.
• Documentation: Keep copies of every service visit, pump date, and any repairs. A well-kept log helps you anticipate next steps and MAINTAIN compliance with local rules.

What to do between visits

• Use water efficiently: spread laundry over the week, run full loads, and use low-flow fixtures. Reducing peak wastewater helps your drain field recover between uses.
• Acceptable waste only: avoid flushing wipes (even those labeled flushable), solvents, caustic cleaners, oil/grease, pesticides, and paints. Minimize garbage disposal use to reduce solids entering the tank.
• Landscaping awareness: keep cars, machinery, and heavy loads off the drain field. Plant grass above the field to stabilize soil, but avoid deep-rooted trees and shrubs whose roots can intrude on pipes.

Drain field protection and landscaping

• Root control: plant shallow-rooting vegetation near the drain field and keep trees at a safe distance. Roots can clog or damage pipes.
• Grading and drainage: ensure surface water drains away from the drain field; pooling can saturate soils and impair absorption.
• Soil care: avoid compacting the soil over the drain field by heavy foot traffic or equipment.

Seasonal considerations in Culver

• Irrigation timing: during peak irrigation months, monitor drainage and water usage more closely. High water input when soils are already moist can push wastewater toward the surface or toward the septic tank outlet.
• Winter insulation: in cold months, keep access ports clear of snow and ensure vents are unobstructed. Frozen components or buried lids can complicate maintenance and conceal problems.

Signs trouble and what to do

• Common indicators: slow drains, gurgling in pipes, sewage odors, damp or lush patches above the drain field, or wastewater surfacing in the yard.
• Immediate steps: conserve water, avoid using the system until inspected, and contact a licensed septic professional promptly. Do not раздел (do not) attempt to repair major issues yourself.

Planning for remodels or upgrades

• Remodeling considerations: additions or higher wastewater flows require assessment of drain-field capacity and tank size. You may need permit reviews and soil tests through the county health department and state agencies before proceeding.

Official resources

• Oregon Department of Environmental Quality (DEQ) — On-site Wastewater Program: guidance on permits, inspections, and best practices for Oregon systems.
• U.S. EPA — Onsite Sewage Systems: consumer-friendly overview, maintenance tips, and regulatory context. https://www.epa.gov/septic
• Oregon State University Extension — Septic systems and soil considerations: practical, field-tested guidance for homeowners. https://extension.oregonstate.edu

Cost Expectations for Septic Services in Culver

Septic Tank Pumping and Cleaning

• What it includes: removal of liquid and sludge from the tank, inspection of baffles and outlets, checking for standing water or signs of leaks, lid access verification, and a basic overall system check. In Culver, many homes have challenging access or older tanks, which can affect time and cost.
• Culver-specific considerations: tank access via narrow driveways, dirt roads, or steep slopes can add labor. Some older tanks may require partial excavation or more extended pump-out times.
• Typical cost in Culver: roughly $350–$700 for a 1,000–1,500 gallon tank; larger or multiple-tank setups can run higher.
• Official resources:

Regular Septic System Inspections

• What it includes: visual inspection of the tank and distribution field, pump status check if accessible, assessment for signs of failure (gurgling, odors, wet spots), and a written recommendation. Often performed as part of routine maintenance or when home records are uncertain.
• Culver-specific considerations: stricter adherence to local codes when a property has a mound or advanced treatment unit; inspections may trigger required follow-up maintenance.
• Typical cost in Culver: $150–$400 for a basic inspection; more comprehensive inspections (with dye tests or camera checks) can be $300–$600.
• Official resources: https://www.oregon.gov/deq/wq/wastewater/pages/onsite.aspx

Pre-Purchase Septic System Inspections

• What it includes: a thorough evaluation of tank, lid condition, pump availability, drain field health, and a detailed report to inform the buying decision.
• Culver-specific considerations: buyers often request more detailed field evaluations due to soil and slope variations in the area; may require additional dye tests or field measurements.
• Typical cost in Culver: $300–$800 depending on tank size, access, and depth to field.
• Official resources: https://www.oregon.gov/deq/wq/wastewater/pages/onsite.aspx

Drain Field Evaluation and Repair

• What it includes: assessment of soil absorption, distribution box function, inspection for wet areas, and targeted repairs (replacing damaged pipes, venting, or cleaning the drain lines). In Culver, drought and variable soils can affect field performance.
• Culver-specific considerations: repair options may be limited by soil conditions and proximity to wells or watercourses; trenching can be more involved in rocky or dense soils.
• Typical cost in Culver: $2,000–$8,000 for targeted repairs; larger fixes or partial replacements can rise beyond $8,000.
• Official resources: https://www.oregon.gov/deq/wq/wastewater/pages/onsite.aspx

Drain Field Replacement or New System Installation

• What it includes: site evaluation, system design, permits, soil testing, installation of the drain field or mound system, and final grading. This is a major project with long lead times in many Culver surroundings.
• Culver-specific considerations: soil type, flood risk zones, and proximity to wells or streams influence design choices and permit requirements.
• Typical cost in Culver: $8,000–$25,000+ depending on area, system type (traditional trench vs. mound), and access.
• Official resources: https://www.oregon.gov/deq/wq/wastewater/pages/onsite.aspx

Septic Tank Lids, Risers, and Access Improvements

• What it includes: adding or replacing risers and secure lids for safer, easier future pumping and inspections; sometimes includes weed mitigation and grading.
• Culver-specific considerations: access improvements are common in older Culver homes with buried lids or single-lid access.
• Typical cost in Culver: $400–$1,500 depending on materials and installation complexity.
• Official resources: https://www.oregon.gov/deq/wq/wastewater/pages/onsite.aspx

Perc Tests and Soil Evaluations for New Systems

• What it includes: soil analysis, percolation testing, and feasibility assessment to support a new system design.
• Culver-specific considerations: local soils can vary; tests inform whether a conventional system, mound, or alternative design is required.
• Typical cost in Culver: $1,000–$3,000 (depending on site size and access).
• Official resources: https://www.oregon.gov/deq/wq/wastewater/pages/onsite.aspx

Maintenance Plans and Scheduled Service

• What it includes: a written maintenance schedule, recommended pumping frequency based on use, and reminders; often offered as a service agreement.
• Culver-specific considerations: usage patterns (guest homes, irrigation load) and seasonal occupancy influence recommended intervals.
• Typical cost in Culver: $100–$350 per year for ongoing support; pumping intervals still apply as per system design.
• Official resources: https://www.oregon.gov/deq/wq/wastewater/pages/onsite.aspx

Grease Traps and Interceptors (Residential/Commercial Mix)

• What it includes: pumping and cleaning of grease traps or interceptors when present; essential for households with heavy cooking outputs or commercial use.
• Culver-specific considerations: many homes aren't connected to large interceptors, but some small commercial properties or multi-family units may have them.
• Typical cost in Culver: $150–$500 depending on size and accessibility.
• Official resources: https://www.oregon.gov/deq/wq/wastewater/pages/onsite.aspx

Note: Costs vary with tank size, access, local soil conditions, and permit requirements. For official regulatory guidance on onsite wastewater, visit the Oregon DEQ Onsite Wastewater Program pages: https://www.oregon.gov/deq/wq/wastewater/pages/onsite.aspx