Septic in Aurora, CO
Last updated: Mar 21, 2026
Aurora sits just east of Denver, where sunlit neighborhoods meet open plains and practical home care matters. If you're navigating a home here, wastewater questions aren't a mystery—they're just part of keeping a family comfortable and the landscape healthy.
Is septic common in Aurora? Should I expect septic if I own or buy a home?
Mostly, Aurora homes connect to the city sewer, and you'll see septic mainly in the areas outside the city's core or on larger parcels that aren't tied into the municipal system yet. If you're buying or already own in Aurora, verify whether your home uses municipal sewer or a septic system. Look at the property disclosures, ask the seller, and check with the City of Aurora's records. If a septic system is present, you'll want to know its age, maintenance history, current condition, and any local inspection or permit requirements.
Why homes typically use septic systems in Aurora
- Development patterns and municipal reach: In the inner metro, sewer lines are common; farther out, some neighborhoods and rural-leaning parcels rely on on-site systems.
- Soils, groundwater, and climate: Colorado's varied soils and relatively dry climate influence how wastewater can be treated safely on-site, making septic a practical option in selected lots.
- Cost and resilience: Septic systems can be a sensible choice for private parcels where extending sewer lines is costly or impractical, or where homeowners want independent wastewater management.
- Regulation and maintenance: Proper design by a licensed contractor, regular pumping and inspections, and adherence to local rules help protect groundwater and keep systems functioning well.
High-level explanation (why septic exists here)
A septic system exists to treat wastewater on the property when a centralized sewer connection isn't readily available or feasible. It's a longstanding, practical solution in many parts of Colorado, aligned with responsible water use and local geology. When maintained properly, septic systems support healthy homes and a healthy environment while giving homeowners control over their wastewater onsite.
In the rest of this guide, you'll find practical steps for evaluating an existing system, maintenance calendars, and trusted local contractor tips that Aurora homeowners rely on.
Where Septic Systems Are Common in Aurora
Areas in Aurora where septic systems are most common
In Aurora, the vast majority of homes connect to municipal sewer, but septic systems are still found in several pockets. These tend to be in areas where sewer mains don't reach the property boundary yet, or where extending sewer would be cost-prohibitive. Common zones include:
- Rural and semi-rural fringes of Aurora's eastern, northern, and southern outskirts where central sewer lines stop short of individual lots.
- Older subdivisions and rural-residential parcels developed before sewer service was extended into the area.
- Properties on hillside or with challenging soil conditions (such as clay-heavy soils or areas with higher groundwater) where gravity-fed sewer installation is impractical.
- Unincorporated pockets within or adjacent to Aurora, often in Arapahoe County, where county health departments oversee on-site wastewater treatment systems (OWTS) and permits.
Regardless of location, if you have a septic system, regular maintenance — including periodic pumping and careful waste management — is essential for long-term performance and to protect groundwater.
Why these patterns persist
Several practical factors influence where septic systems remain common in and around Aurora:
- Infrastructure reach and cost: Extending sewer mains to every property is expensive and time-consuming. If a neighborhood isn't within a planned sewer service area, homes may keep septic until upgrades occur.
- Soil and topography: Permeability, drainage, and slope affect the feasibility of installing gravity sewer lines. Areas with poor drainage or significant slope may rely on onsite systems for longer.
- Annexation and service conversions: Some parcels remain septic as they transition from county or unincorporated status to full city service, or until new lines are installed as part of planned development.
- Local regulations: OWTS are governed by state and local health departments, which means enforcement, maintenance standards, and permitting can influence how long a property uses a septic system.
How to tell if your Aurora home uses septic
If you're unsure whether your property is served by septic or the municipal sewer, use these steps:
- Check your sewer service boundaries. Look for the city's or county's maps or contact your utility or planning department to confirm whether your address falls inside the sewer service area.
- Review your property records. Seller disclosures, closing documents, or county permits may note an OWTS installation or septic permit.
- Inspect the yard for clues. Look for a buried tank access lid, a drainfield area, or patches of prairie grass that may indicate a septic system's presence.
- Confirm with a trusted authority. If in doubt, contact the Colorado Department of Public Health and Environment (CDPHE) for guidance on onsite wastewater systems at or your local health department for confirmation.
Official resources for Aurora homeowners
Septic vs Sewer: What Homeowners in Aurora Should Know
Is your home on septic or sewer?
In Aurora, most homes connect to the municipal sewer system, but some rural pockets or recently annexed areas may rely on a septic system. The key difference: with sewer, wastewater travels through your property to a city plant; with septic, wastewater is treated on-site in a tank and drain field. Understanding which path your home uses affects what kind of maintenance you need, potential costs, and how quickly small problems can become big ones.
- Septic systems: Pros
- No monthly city sewer bill; some charges are bundled into utilities or property costs.
- Greater independence from municipal outages, but you're responsible for on-site maintenance.
- Septic systems: Cons
- Regular pumping and inspection are essential to prevent failures.
- Poor soil, high groundwater, or tree roots can complicate or damage a septic system.
- Sewer connections: Pros
- Wastewater is handled by the city, with professional maintenance often covered by the municipality.
- Fewer on-site maintenance tasks for homeowners, though you still need to manage grease and trash to protect public lines.
- Sewer connections: Cons
- Ongoing monthly sewer charges can be a significant ongoing cost.
- If the system backs up or there are local sewer line issues, you may face service interruptions.
How to know what applies to you
- Check your utility bill or property records for "sewer" service. If you pay a city sewer fee, you're connected to a municipal system.
- Look for a septic tank or drain field on your property; a lack of a sewer bill plus a visible tank lid or drain field often indicates a septic system.
- Call a licensed septic contractor or a local plumber to confirm the system type and get an inspection if needed.
- Contact your county or city public health or utilities department to confirm current connections and abandonment requirements if you're unsure.
Costs and maintenance at a glance
- Septic system costs: New or replacement septic systems can range widely, often $10,000–$30,000 depending on soil, tank size, and permitting.
- Sewer connection costs: One-time connection fees plus any required trenching or meter installation; ongoing charges are typically a monthly service fee.
- Routine maintenance: Pump a conventional septic every 3–5 years (some systems longer); inspect every 1–3 years; use water efficiently to protect your drain field.
- Common failures: Clogs from non-biodegradable items, excessive water use, tree roots intruding on the drain field.
Aurora-specific considerations
- Most Aurora homeowners are served by the city sewer system, but verify with the City of Aurora or your utility provider if you're near the city limits or recently annexed.
- If you're considering a home with a septic system or if you're contemplating joining the municipal sewer, obtain formal assessments, permits, and abandonment guidelines. Adhering to local codes helps protect water quality and property value.
- Helpful resources: Colorado Department of Public Health and Environment Onsite Wastewater Treatment Systems (OWTS) guidance at and EPA septic program at https://www.epa.gov/septic
Typical Septic System Types in Aurora
Conventional septic system (tank and drainfield)
- What it is: A buried concrete, steel, or plastic septic tank that holds wastewater long enough for solids to settle, followed by a soil absorption field (drainfield) where liquid effluent percolates into the soil.
- When it works best: Typical soils with adequate depth to groundwater and good percolation rates.
- Pros: Simple design, common, generally lower upfront cost.
- Cons: Requires suitable soil conditions and adequate space; failure can contaminate groundwater if not properly maintained.
- What to expect: A buried tank and a network of perforated pipes or chambers spreading effluent in the drainfield.
Chamber drainfield systems
- What they are: An evolution of conventional drainfields using modular plastic chambers instead of traditional gravel beds.
- Why homeowners choose them: Often lighter to install and faster to construct; can provide more uniform distribution and easier maintenance checks.
- Pros: Flexible spacing, good performance in many soils, easier installation in limited reverse grades.
- Cons: Still requires adequate soil depth and stability; replacement parts should come from reputable suppliers.
- What to expect: A buried chamber layout with similar surface access as conventional fields.
Mound systems
- What they are: Raised "mounds" consisting of a sand fill above the native soil, with a drainfield built on top of the sand where depth to native soil is limited or groundwater is shallow.
- When they're used: In Aurora areas with poor soil percolation, high water tables, or bedrock near the surface.
- Pros: Expands usable site area; can achieve reliable treatment where standard beds won't.
- Cons: More complex design and higher maintenance considerations; requires more land area and careful slope control.
- What to expect: A raised system with a surface area typically above grade and a shallow inlet to distributed effluent.
Sand filter systems
- What they are: An engineered treatment step where effluent is delivered to a sand-filled bed for filtration before infiltrating the soil.
- Why they're used: Improve treatment performance in soils with limited infiltrative capacity or when pre-treatment is beneficial.
- Pros: Greater treatment reliability for challenging soils; compatible with some mound or drip-distribution options.
- Cons: More components to inspect and maintain; higher upfront cost.
- What to expect: A dedicated filtration bed, often with monitoring ports and a separate dosing system.
Aerobic treatment units (ATUs)
- What they are: Small, above- or below-ground treatment devices that add oxygen to the wastewater to boost breakdown of solids and organics before disposal.
- When you'll see them: In homes where soil conditions or property constraints limit conventional systems; often used with spray or drip disposal.
- Pros: Higher effluent quality, can expand where drainfields are restricted.
- Cons: Higher maintenance needs (electricity, alarms, regular servicing); ongoing operational costs.
- What to expect: A mechanical unit with routine service intervals and a disposal field or spray system.
Drip irrigation and spray disposal systems
- What they are: Low-pressure delivery of effluent to landscaped areas via drip lines or spray heads.
- Why homeowners choose them: Efficient use of limited drainfield space; can double as irrigation for lawns and gardens.
- Pros: Potentially smaller drainfield footprint; flexible placement for landscape use.
- Cons: Strict design, installation, and maintenance requirements; must meet local regulations.
- What to expect: A dosing timer, irrigation lines, and a controlled release pattern that protects the soil and plants.
Evapotranspiration (ET) beds
- What they are: Systems that rely on evaporation and plant transpiration to dispose of wastewater, typically in drier climates.
- When applicable in Aurora: Less common, but available in regions with appropriate climate mechanics and regulatory approval.
- Pros: Passive disposal path to atmosphere and vegetation.
- Cons: Requires careful design to avoid surface odors or plant uptake issues.
- What to expect: A shallow basin or bed integrated with plantings and a dedicated irrigation plan.
How to choose the right system for Aurora
- Confirm sewer service status: Is the home connected to municipal sewer, or is onsite wastewater disposal allowed?
- Assess site soils and depth: Soil tests and percolation rates guide feasibility.
- Check local and state requirements: CDPHE Onsite Wastewater Treatment Systems (OWTS) guidelines and permits.
- Consult a licensed OWTS contractor or designer: They'll tailor design to site constraints and maintenance needs.
- Obtain permits and plan inspections: Ensure approvals align with CDPHE and county/local health departments.
- Plan for ongoing maintenance: Regular pumping, inspection, and system-specific upkeep.
Official resources:
Common Septic Issues in Aurora
Slow drains, backups, and odors
Sinks and toilets that drain slowly or gurgle can indicate the tank is full or the drainfield is struggling. In Aurora, clay soils and seasonal water table shifts can amplify these problems, making drainage slower than in looser soils.
- Common causes:
- Excessive water use (large laundry loads, long showers, simultaneous use)
- Flushing non-dispersible items (wipes, wipes labeled flushable, diapers) or fats, oils, and grease
- A septic tank that's not been pumped on schedule
- Drainfield saturation from heavy rainfall, irrigation, or perched water tables
- Signs you should notice:
- Slow sinks/toilets, gurgling pipes, or sewage odors in basement or yard
- Backups in lower fixtures after heavy use
- What to do (steps you can take now):
- Conserve water and stagger high-flow activities (laundry, showering)
- Schedule a professional pump-out and system inspection
- Use septic-safe products and avoid chemical drain cleaners
- If odors persist, have a qualified septic technician inspect venting and connections
Drainfield saturation and yard pooling
Excess moisture over the drainfield area is a leading cause of system failure. Aurora's spring snowmelt and irrigation cycles, combined with clay soils, can leave the absorption area saturated longer than in other regions.
- Signs to watch:
- Wet, spongy patches or standing water above the drainfield
- Lush, unusually vibrant vegetation over the field compared with the rest of the yard
- Causes:
- Saturated soils or perched water table
- Soil compaction and poor drainage
- Roots or debris intruding on the trenches
- What to do:
- Temporarily stop irrigating over the drainfield and keep traffic off it
- Avoid parking vehicles or placing heavy objects on the area
- Have a licensed pro evaluate absorption capacity and pump if needed
- If drainage remains poor, a professional may recommend soil testing or an upgrade (e.g., mound system) tailored to Aurora soils
Root intrusion and landscaping challenges
Tree and shrub roots are drawn to moisture in septic lines, and proximity matters.
- How intrusion presents:
- Slow drains, recurring clogs, or cracks near the septic area
- Visible roots near access ports or along trenches
- Management steps:
- Plant trees and large shrubs well away from the drainfield—size and spacing depend on species
- If roots encroach, consult a pro for root pruning or trench reconfiguration
- Maintain a protective mulch layer and avoid damaging the system during landscaping
- Aurora note: drought-adapted landscaping can reduce root competition near the system, but any planting should be planned with the drainfield layout in mind
Chemical misuse and improper waste disposal
Harsh cleaners and improper disposal disrupt beneficial bacteria and can harm system performance.
- What to avoid:
- Solvents, paints, pesticides, and petroleum products down the drain
- Large quantities of cleaners or drain-openers
- Safer practices:
- Use septic-safe cleaners in limited amounts
- Put solids (coffee grounds, filters, grease) in the trash or compost, not the toilet
- Use the garbage disposal sparingly to reduce solids entering the tank
Winter and freeze-thaw impacts
Colorado winters bring freeze-thaw cycles that stress underground systems and slow drainage.
- How it shows:
- Slower drainage during cold months and occasional frost-related surface issues
- Prevention tips:
- Ensure proper insulation around the tank, lids, and lines near the surface
- Do not drive or park on the drainfield in winter; keep snow and ice cleared away
- Have a pro assess potential frost-related damage and adjust as needed
Maintenance and preventive care
A proactive approach minimizes surprises and prolonged downtime.
- Regular maintenance actions:
- Pump every 3–5 years (adjust for tank size and household usage)
- Schedule inspections after major system changes or events
- Keep a map of buried lines and a record of pump dates
- Keep vehicles, heavy equipment, and deep-rooted planting off the drainfield area
Official resources
- [Colorado CDPHE Onsite Wastewater Treatment Systems (OWTS) program](
- [EPA Septic Systems](
Septic Inspection, Permits & Local Oversight
Local oversight in Aurora
- In Aurora, most septic system oversight is handled at the county level (Arapahoe or Adams) rather than by the city itself. The state, via the Colorado Department of Public Health and Environment (CDPHE), sets statewide rules for onsite wastewater, while county environmental health departments enforce permits, inspections, and field approvals.
- For official guidance and the permit process, start with the Colorado CDPHE Onsite Wastewater Treatment Systems program:
- Your exact path (permit type, design approval, installation, pumping records) will depend on which county you're in. If you're unsure which county office serves your property, CDPHE's OWTS page can help you locate the appropriate local program.
When inspections are required
- Real estate transfers: A septic system inspection may be required or highly recommended during sale. Check with your title company or real estate agent about local transfer requirements.
- New installations or major repairs: A county health department permit is required, and a final inspection is needed to confirm the system is correctly installed and meets setback, soil, and design standards.
- Routine maintenance or upgrades: If you're upgrading design capacity, moving or enlarging a drainfield, or changing tank configurations, a permit and inspection are typically required.
Permits you'll encounter
- Onsite Wastewater Treatment System (OWTS) permit for installation or modification
- Obtain through your county environmental health office (Arapahoe or Adams County, depending on location).
- Submittals usually include a site plan, system design, and soil/perc test information.
- Final inspection approval
- The inspector verifies that the as-built matches the approved design and that setbacks, tank access, leach field, and discharge standards are met.
- Abandonment or replacement permits
- If you're abandoning an old system or replacing it, you'll need permits and final inspections to document the change.
What inspectors look for
- Proper siting: distance from wells, foundations, septic fields, and surface water.
- Tank integrity and access: intact lids, baffles, and clearly marked locations.
- Drainfield condition: adequate absorption, no surface pooling, and no roots or debris blocking trenches.
- System design compliance: correct tank size, pump chamber (if applicable), distribution method, and proper filtration.
- Soil suitability: appropriate percolation and absorption capacity for the site.
How to prepare for an inspection
- Gather records: as-built drawings, previous inspection reports, pumping records, and maintenance history.
- Locate the system: map the tank and drainfield locations, take measurements, and share with the inspector.
- Hire licensed professionals: use Colorado-licensed septic installers and inspectors. Confirm they will pull the required permit and provide final inspection documentation.
- Have access ready: clear access to tanks, lids, and cleanouts for the inspector.
Real estate transfer tips
- Schedule early: arrange the inspection before or soon after you list to avoid closing delays.
- Be prepared for repairs: if the system fails or is deficient, you may need to perform upgrades or replacements per local codes.
- Documentation helps: maintain a packet of pumping records, maintenance, and past permits to show buyers.
Maintenance, records & ongoing oversight
- Keep a centralized file with all permits, inspection reports, pumping receipts, and maintenance schedules.
- Follow recommended pumping intervals based on tank size and household usage; submit pumping records to the county if requested.
- If you notice sewage odors, surface pooling, wet spots, or sewage backups, contact your local environmental health office promptly.
Official resources
- Colorado CDPHE – Onsite Wastewater Treatment Systems: https://cdphe.colorado.gov/onsite-wastewater-treatment-systems
- For your exact jurisdiction, contact your county environmental health department (Arapahoe or Adams) to confirm permit requirements, inspection scheduling, and final approvals. Your county program can provide the specific forms, fees, and timelines for Aurora properties.
Septic Maintenance for Homes in Aurora
Aurora-specific considerations
Aurora sits along the Front Range, where winters are cold and summers can be hot and dry. Soil types in the area range from sandy loam to clay, and some neighborhoods have shallower depths to bedrock or compacted subsoil. That mix can affect drainfield drainage and how quickly systems recover after heavy water use. In practice, Aurora homes may see more stress on the drainfield during peak irrigation months and rapid snowmelt, so think ahead about water use and landscape impact. Keep access to the tank and cleanouts clear after snow and ice; winter conditions can hide problems until spring.
Regular maintenance schedule
- Pumping interval: Most residential tanks around 1,000–1,500 gallons are pumped every 3–5 years, but the exact interval depends on tank size, number of occupants, and water habits. Homes with garbage disposals or high water use may need more frequent pumping.
- Annual inspections: Have a licensed septic professional inspect the system each year. They'll check tank integrity, baffles, filters, and the drainfield surface for signs of distress. In Aurora, a local contractor familiar with Colorado soils and climate can tailor recommendations.
- Record-keeping: Maintain a simple log of pumps, inspections, and any repairs. Note tank dimensions, locations, and access points. This helps future owners and simplifies county or state inspections if required.
Daily and weekly habits for Aurora homes
- Conserve water: use full loads for laundry and dishwashing; fix leaks promptly; consider high-efficiency fixtures.
- Mind the disposal: avoid pouring grease, solvents, paints, or chemical cleaners down sinks. These substances can disrupt beneficial bacteria and clog the drainfield.
- Use the garbage disposal sparingly: disposals add solids to the tank, increasing pump frequency and risk of accumulation.
- Parking and landscaping: don't drive or park heavy equipment on the drainfield or septic tank area; keep the area well-maintained with shallow-rooted grass and avoid planting trees or deep-rooted shrubs directly over the field.
- Irrigation awareness: be mindful of lawn watering around the drainfield—heavy irrigation can saturate the native soils and reduce drainfield performance.
Drainfield protection in Colorado soils
- Maintain proper grading: ensure surface water drains away from the drainfield area.
- Vegetation choice: plant shallow-rooted grasses over the field; avoid trees and large shrubs whose roots could intrude into lines.
- Soil monitoring: if you notice soggy spots, spongy turf, or a strong sewage odor near the drainfield, call a pro promptly.
- Seasonal access: in winter, keep access ports and lids free of snow and ice so a technician can reach them safely if needed.
Seasonal tips for Aurora
- Spring/summer: higher usage from gardening and pool fill-ups can increase loading on the system. Stagger irrigation if possible and avoid long runs of outdoor hoses during peak usage.
- Fall: if you've had a dry summer, re-check drainfield moisture; very dry soils can shift the system, while unusually wet autumns can flood the drainfield.
- Winter: protect the tank and lines from freezing by ensuring insulation around exposed components and keeping vent outlets clear of snow.
Signs of trouble and what to do
- Common warning signs: slow drains, gurgling pipes, sewage odors around the house, damp or lush patches above the drainfield, or wastewater backing up into fixtures.
- Immediate steps: reduce water use, avoid scheduling major irrigation, and contact a licensed septic professional for an on-site evaluation. Do not attempt DIY repairs or tank openings if you're not trained.
Resources
- Colorado Department of Public Health and Environment – Onsite Wastewater:
- Colorado State University Extension – Septic Systems:
Cost Expectations for Septic Services in Aurora
Septic Tank Pumping
- What's included: safe removal of wastewater, tank cleaning, inspection of baffles and outlet tees, and a brief report on tank condition. Recommended every 3–5 years for typical family usage; more often with heavy use or high-efficiency systems.
- Aurora-specific considerations: winter access can affect scheduling; local disposal facilities may have seasonal hours or special handling requirements. Keeping access clean and free of snow helps reduce service time.
- Typical cost in Aurora: $300–$600
- Official resources:
Septic System Inspection (including pre-purchase)
- What's included: visual inspection of all septic components, tank integrity, baffles and tees, effluent screen condition, and a basic system health assessment; may include pumping if needed and recommendations for next steps.
- Aurora-specific considerations: pre-purchase inspections are common in this market due to rapid home-value changes; may also be required by lenders or insurers.
- Typical cost in Aurora: $350–$800 for a full OWTS inspection; $250–$450 for a basic check
- Official resources: https://cdphe.colorado.gov/onsite-wastewater
Video Camera Sewer Line Inspection
- What's included: video scan from the house to the septic tank or to the public sewer line to detect cracks, blockages, roots, or collapses; often paired with pump-out if issues are found.
- Aurora-specific considerations: useful if the system's history is uncertain or if a townhouse/duplex has a shared line; reduces guesswork before repair decisions.
- Typical cost in Aurora: $150–$350 (longer runs or multiple lines may be higher)
- Official resources: https://cdphe.colorado.gov/onsite-wastewater
Drain Field Evaluation / Soil Absorption System Assessment
- What's included: assessment of soil condition, permeability, and drainage capacity; dye tests or soil probe work may be used; evaluation helps determine if the field can continue to function or needs modification.
- Aurora-specific considerations: climate and seasonal soil moisture can influence results; many assessments are timed for drier months to get accurate readings.
- Typical cost in Aurora: $350–$900
- Official resources: https://cdphe.colorado.gov/onsite-wastewater
Drain Field Repair or Replacement
- What's included: pinpointing failure causes (roots, compaction, failed soils), repair options or full/partial replacement of the drain field, trenching, piping, gravel, and restoration of surface.
- Aurora-specific considerations: weather windows matter; replacement can require permits and nearby yard access planning.
- Typical cost in Aurora: $5,000–$15,000 (smaller repairs on a partial field may be less; full replacement can exceed $15k depending on lot size and soil)
- Official resources: https://cdphe.colorado.gov/onsite-wastewater
New Septic System Installation or System Replacement
- What's included: site evaluation, soils testing, system design, all required permits, excavation, trenching, aerobic/ conventional systems, start-up, and certification.
- Aurora-specific considerations: permits and soils evaluations are typically required; weather and access can impact installation timelines; local authorities may have specific setback and replacement rules.
- Typical cost in Aurora: $12,000–$30,000 (varies with system type, lot size, and soil conditions)
- Official resources: https://cdphe.colorado.gov/onsite-wastewater
Septic Tank Risers and Lids (Access Improvements)
- What's included: installation or replacement of risers and secure, accessible lids to simplify future pumping and inspections; improves access and reduces soil disturbance during maintenance.
- Aurora-specific considerations: frost protection and easier winter access are common selling points in colder climates.
- Typical cost in Aurora: $700–$2,000
- Official resources: https://cdphe.colorado.gov/onsite-wastewater
Sump Pump / Ejector Pump Service
- What's included: pump inspection, battery backup check, switch testing, and replacement if needed; ensures basement wastewater is properly managed and directed away from the septic system.
- Aurora-specific considerations: basement systems are more common in newer Aurora homes; ensure electrical and drainage clearances meet local codes.
- Typical cost in Aurora: $150–$350 for service; $600–$1,500 for replacement
- Official resources: https://cdphe.colorado.gov/onsite-wastewater
Septic System Decommissioning / Abandonment
- What's included: pumping, proper filling, capping of the tank, a seal or marker, and final site restoration; often required when a property is converted to connect to municipal sewer or if selling with no intent to reuse.
- Aurora-specific considerations: must meet county and city requirements; documentation may be needed for property records.
- Typical cost in Aurora: $1,000–$3,000
- Official resources: https://cdphe.colorado.gov/onsite-wastewater