Septic in Warner, OK

Last updated: Mar 21, 2026

Warner has that friendly, close-knit feel where your home sits a bit apart and the land around it tells its own story. In neighborhoods like yours, private septic systems are a common, sensible setup that keeps homes comfortable without relying on city sewer lines running through every street. As a local septic contractor who works with Warner families, I'm glad you're here—this page is built to give you practical, trustworthy guidance you can actually use.

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

Yes. In Warner, and in many surrounding rural areas, private septic systems are still the norm for single-family homes that aren't connected to a municipal sewer main. If you're buying a home here, you should plan for a septic system unless you know the property is tied to city sewer. It's one of the first things I check with buyers: the tank size, the date of the last pumping, and whether there's an up-to-date maintenance record.

Why homes typically use septic systems in Warner

  • Rural layout and infrastructure: Many parcels are set back from city lines, so extending sewer service isn't always practical or cost-effective.
  • Soil and groundwater realities: Septic systems are well-suited to the soils in and around Warner when properly designed and installed.
  • Independence and cost: A well-maintained septic system gives homeowners reliable wastewater treatment without the ongoing utility hookup costs in areas where a municipal system isn't readily available.
  • Local codes and compatibility: Oklahoma's rural zoning often encourages or accommodates on-site systems for steady, long-term home operation.

High-level explanation (why septic exists here)

Septic systems exist because vast stretches of Warner aren't served by an expansive sewer network. The combination of property size, road layouts, and the desire for private wells means many homes use on-site wastewater treatment. A well-designed septic setup uses a tank to separate solids from liquids and a drain field to safely soil-treat and disperse wastewater back into the ground. When kept in good repair, a septic system supports comfortable living without frequent utility interruptions.

What to look for as a homeowner or buyer (quick-start checklist)

  • Confirm whether the property connects to municipal sewer or relies on a septic system.
  • Ask for the septic permit, tank size, and the date of the last pump or service.
  • Look for maintenance records and any symptom history (gurgling noises, odors, damp spots, or unusually lush grass over the drain field).
  • Have a local septic professional inspect the system as part of your home evaluation.

A few practical steps to start with can make all the difference as you plan your Warner home's long-term comfort and reliability.

Where Septic Systems Are Common in Warner

Map of septic coverage in Warner, OK

Areas without public sewer service

  • Warner has many single-family homes on individual lots that aren't connected to a city or county sewer line. In these neighborhoods, septic systems are the standard method for wastewater disposal.
  • You'll also see septic in rural subdivisions and on homes that sit farther from central utilities. If you're unsure whether your property ties into a sewer main, check with the town building department or local public works office.

Why this pattern exists

  • Cost and practicality: Extending sewer lines to dispersed homes can be expensive, so many landowners rely on on-site treatment.
  • Lot size and layout: Larger lots designed for private wells and wells often pair with septic systems, which don't require the same infrastructure as centralized sewer.
  • Local regulations and history: In areas where sewer service wasn't historically available, septic systems became the default option and remain common even as neighborhoods develop.

Soil and landscape factors that support septic efficiency

  • Soils with good permeability: Soils that drain well allow effluent to move through the drainfield without pooling.
  • Moderate slopes: Gentle to moderate slopes help gravity drainage while reducing erosion risk.
  • Groundwater depth: Systems perform best when the seasonal high-water table is deep enough to avoid rapid saturation of the drainfield.
  • Avoidance of wetlands and bedrock: Areas known to have perched water tables, heavy clays, or shallow bedrock may require alternative designs.

Common septic system types you'll encounter in Warner

  • Conventional gravity-flow systems: A septic tank collects wastewater, and liquid effluent flows into an underground drainfield.
  • Mound or bed systems: Used where native soils are too slow to drain or where the groundwater is shallow; these require engineered design and space.
  • Alternate or specialty systems: In places with challenging soils or high water tables, you may see sand filters, aerobic treatment units, or drip irrigation drainfields.
  • Seasonal and small-scale homes: Even homes used part-time rely on properly sized and maintained septic systems, sometimes with smaller or simplified designs.

How to tell if your Warner property uses a septic system

  1. Look up property records: Search your deed, plat map, or permits for a septic system installation or modification.
  2. Inspect the yard layout: Common indicators include an access lid or concrete chamber near the house and a drainfield area (often a broad, grassy area with fewer trees).
  3. Check for signs of a drainfield: Mounded or consistently lush green patches, damp spots, or unusually lush vegetation in a specific zone can indicate a drainfield.
  4. Talk to the previous owner or the local health department: They can confirm whether a system exists and provide installation details.
  5. Hire a licensed septic inspector: A professional can perform a full as-built evaluation, percolation tests, and tank inspection to confirm the system's condition and capacity.

Maintenance mindset for Warner septic systems

  • Pump every 3–5 years (or per inspector's guidance) to prevent solids buildup.
  • Minimize solids and fats: Use septic-safe products, avoid pouring grease or chemicals down the drain, and limit non-dishwasher solids.
  • Protect the drainfield: Keep heavy vehicles and structures off the drainfield, plant shallow-rooted grasses only, and divert roof and surface water away from the area.
  • Monitor for signs of trouble: Slow drains, gurgling noises, or damp, unusually lush spots can indicate a problem.

Official resources

  • U.S. Environmental Protection Agency (EPA) – Septic Systems:
  • U.S. Department of Agriculture (USDA) Web Soil Survey – Understand soil conditions that affect septic performance: https://websoilsurvey.nrcs.usda.gov

Septic vs Sewer: What Homeowners in Warner Should Know

How the two systems work

  • Septic system: Wastewater stays on your property. A buried septic tank holds solids while liquids drain to an underground drain field. Regular pumping and proper use keep it running smoothly. Typical pumping interval is every 3–5 years, depending on household size and usage. For basics, see EPA's septic overview: https://www.epa.gov/septic'>https://www.epa.gov/septic.
  • Municipal sewer: Wastewater is carried away by pipes to a treatment plant run by the city or a utility. You pay a monthly or quarterly sewer bill, and maintenance is mostly the utility's responsibility. For general guidance, see EPA's page on sewer and wastewater basics: https://www.epa.gov/septic (and general wastewater information).

Is your Warner home on septic or sewer?

  • Check your service records: look at city or utility bills to see if you're billed for sewer service.
  • Inspect the property: a visible septic tank lid and drain field indicate on-site septic; absence of a septic system and presence of a municipal cleanout or sewer lateral suggest city sewer.
  • Ask your local utility or the Warner area public works office. They can confirm whether your address is connected to a municipal sewer system. Official state resources can help you understand local rules: Oklahoma DEQ (www.deq.ok.gov) and EPA guidance (https://www.epa.gov/septic).

Pros and cons at a glance

  • Septic benefits
    • Lower monthly fees; potential savings over time if you already own the system.
    • Independence from utility service availability or outages.
    • Greater control over on-site maintenance decisions.
  • Septic drawbacks
    • Responsibility for pumping, inspections, and field health falls to you.
    • Drain field problems can be costly and disruptive.
  • Municipal sewer benefits
    • No on-site pumping or field maintenance; predictable monthly costs.
    • Generally more forgiving of occasional household missteps.
  • Municipal sewer drawbacks
    • Dependency on utility services and rate fluctuations.
    • Connection fees or expansion costs if you're not yet tied in.

Maintenance and best practices

  • Regular inspections
    • Schedule a professional septic inspection every 1–3 years depending on system age and use.
    • Pump the tank every 3–5 years (or as recommended) to prevent solids buildup.
  • Waste handling
    • Use water-efficient fixtures; spread out heavy water use (laundry, showers) to avoid overload.
    • Avoid flushing wipes, chemicals, grease, solvents, or non-biodegradable products down sinks and toilets.
  • Landscaping and drainage
    • Keep heavy equipment away from the drain field; plant only shallow-rooted grass over the drain field area.
    • Ensure surface water and roof drains don't pool over the drain field.
  • Sealing and access
    • Keep lids and access risers secure; label the septic tank area for future pumping and maintenance.

For official guidance on protecting your septic system, see EPA's user-friendly tips: https://www.epa.gov/septic'>https://www.epa.gov/septic.

Costs and when to expect them

  • Septic system costs
    • Routine pumping: a typical expense every few years.
    • Repairs or field replacements can be significant but are infrequent with good maintenance.
  • Sewer connection costs
    • Connection or tap fees, possible frontage improvements, and monthly sewer charges.
    • If Warner expands sewer service to your neighborhood, plan for potential hookup timelines and related fees with the local utility.

Quick steps if you're considering switching to or from septic

  1. Confirm service availability for your address with the local Warner utility or public works department.
  2. Obtain a formal estimate of hookup costs and any required permits.
  3. Schedule the tie-in work with the utility and a licensed contractor for any required trenching or line installation.
  4. Update home records and insurance notes to reflect the change in wastewater management.

Official resources:

Typical Septic System Types in Warner

Conventional septic systems

  • How they work: A septic tank holds wastewater long enough for solids to settle; clarified liquid flows to a drainfield where soil organisms treat contaminants.
  • Typical setup: One 1,000–1,500 gallon tank, gravity-fed or pumped distribution to a network of trenches or a bed with gravel or chambered systems.
  • Pros: Generally lowest upfront cost; simple design and common in many homes with suitable soils.
  • Cons: Requires adequate soil depth and drainage; performance can decline with high groundwater or heavy rainfall; regular pumping (often every 3–5 years) is important.
  • Practical tip: If your lot has good soil with proper slope, a conventional system is usually the most economical choice.

Alternative drainfield options

  • Mound systems: Drainfield is raised above natural soil level with engineered fill to reach suitable drainage; used when the seasonal high water table is close to the surface or soils are too shallow.
    • Pros: Works in challenging soils; can accommodate smaller lots.
    • Cons: Higher installation and maintenance costs; larger footprint.
  • Sand bed / chambered drainfields: Replaces traditional gravel with engineered media or simplified plastic chambers.
    • Pros: Often easier to install, can save space, may improve performance in marginal soils.
    • Cons: Still requires proper design and maintenance; not a universal fix for all sites.
  • Low-Pressure Dose (LPD) systems: Uses a pump or siphon to distribute effluent to multiple small absorption areas at low pressure.
    • Pros: Good for sloped lots or limited area; more uniform distribution.
    • Cons: More complex components; regular service is important.
  • Drip irrigation / evapotranspiration beds: Treated effluent is dispersed through drip lines or ET beds for landscape use.
    • Pros: Potential water reuse for irrigation; efficient use of limited space.
    • Cons: Requires careful design, monitoring, and permits; not common in every Warner lot.

Aerobic Treatment Units (ATUs)

  • What they are: Pre-treat wastewater with aerobic bacteria to reduce solids and organics before disposal to a drainfield.
  • How they differ: They require electrical power and more maintenance than a conventional tank.
  • Disinfection step: Treated effluent typically must be disinfected (UV or chlorine) before it enters the drainfield.
  • When to consider: Helpful in areas with poor soils, small lots, or higher wastewater loads; can improve reliability in challenging conditions.
  • References: Learn more about ATUs from EPA at [EPA Septic Systems](https://www.epa.gov/septic) and check Oklahoma-specific guidance with [Oklahoma DEQ On-site Wastewater](https://www.deq.ok.gov/water-quality/onsite-wastewater).'>https://www.deq.ok.gov/water-quality/onsite-wastewater).

Maintenance basics for all system types

  • Pumping steps:
    1. Identify your tank size and estimate pumping frequency with a licensed contractor.
    2. Schedule pumping every 3–5 years under typical use; more often with high wastewater generation.
  • Inspection steps:
    • Have the system inspected during major repairs or when selling a home; keep a simple maintenance log.
  • Protective steps:
    • Avoid heavy equipment or construction over the drainfield; manage surface drainage away from the system; conserve water to reduce load.

Local considerations in Warner

  • Soil and groundwater influence: Warner's site conditions affect which system type is most suitable; a local, licensed septic contractor can test soils and design per state standards.
  • Permitting: Oklahoma DEQ and local authorities regulate on-site wastewater construction; verify permits and design requirements before installation.
  • Helpful resources:

Common Septic Issues in Warner

Common symptoms homeowners notice in Warner

  • Slow drainage, gurgling toilets, and toilets that take longer to flush.
  • Odors around the septic tank, drainfield, or yard, especially after rainfall.
  • Wet, soggy spots or lush green patches over the drainfield; standing water can indicate field saturation.
  • Backed-up fixtures, sewage backups in basements or lower levels, or sewage coming up through drains.
  • Cracks in concrete or foundation slabs near the septic system, or lush vegetation over the drainfield that seems unusually healthy.

Warner-specific factors that affect septic systems

  • Climate and rainfall: Warner experiences seasonal weather swings, with heavy rains in some seasons and dry spells in others. Wet soils can saturate the drainfield, preventing proper effluent percolation.
  • Soil and groundwater considerations: Oklahoma soils range from clayey to sandy; many sites near Warner have soils that drain slowly or have fluctuating water tables. This can make drainfields more sensitive to overloading and rainfall.
  • Frost and freeze-thaw cycles: Cold winters can slow soil movement and freeze components, increasing the risk of broken pipes or frozen lines if the system isn't properly insulated and vented.
  • Tree roots and landscaping: Roots from nearby trees or shrubs can invade buried pipes and drainfield trenches, causing blockages or damage that leads to backups or effluent surfacing.
  • Aging systems: Many Warner homes have older septic tanks and leach fields. When components crack, baffles fail, or tanks settle, performance declines rapidly, especially under variable weather patterns.

Common issues and their causes

  • Overloading the system: High water use from multiple occupants, guests, or seasonal activities can push more water into the tank than it can safely treat, saturating the drainfield.
  • Drainfield failure: Saturated soils, poor soil percolation, or prolonged wet seasons can cause effluent to pool above the drainfield, reducing treatment and risking surface discharge.
  • Root intrusion: Tree or shrub roots growing toward the septic trenches can physically damage pipes and reduce flow.
  • Improper waste disposal: Fats, oils, and grease, chemicals, solvents, and excessive garbage disposal use disrupt beneficial bacteria and clog pipes and filters.
  • Sump pump/foundation drain connections: Discharging sump pump water or exterior foundation drains into the septic system can overwhelm it and lead to rapid field failure.
  • Tank or riser/access issues: Cracked tanks, loose lids, missing risers, or improper pumping schedules can lead to odors, seepage, or backups.

Practical fixes and prevention

  • Manage water use: Spread out laundry and dishwashing, install low-flow fixtures, and use water-efficient appliances.
  • Protect the drainfield: Keep away heavy machinery, avoid parking on the drainfield, and plant only shallow-rooted plants away from trenches.
  • Regular maintenance: Pump every 3–5 years (or per local recommendations) and clean or replace effluent filters as needed.
  • Proper disposal: Use septic-safe products, avoid flushing non-biodegradable items, and compost in-ground only with awareness of local rules.
  • Address roots early: If trees are near the system, consult a pro about root barriers or relocating utilities if needed.
  • Monitor and diagnose: Look for surface odors, wet areas, or backups after heavy rains; address issues promptly to protect the field.

Quick diagnostic steps

  1. Observe drainage patterns after a rainstorm; note any surface pooling over the drainfield.
  2. Check for slow drains in several fixtures, not just one.
  3. Listen for gurgling sounds in pipes and note any persistent odors.
  4. Inspect the tank and access lids for cracking, effluent odors, or wet areas around seals.

When to contact a licensed septic professional

  • You notice persistent surface surfacing, strong odors, or sewage backups.
  • The drainfield shows signs of failure (wet spots, lush vegetation with odors, collapsing soil).
  • You've tried low-flow use and reduced solids, but problems persist.
  • You're considering major changes nearby (landscaping, tree removal near the system, or adding structures) that could affect the tank or drainfield.

Resources

Septic Inspection, Permits & Local Oversight

Local oversight in Warner, OK

In Oklahoma, on-site septic systems are regulated through a combination of state standards and local oversight. The Oklahoma Department of Environmental Quality (ODEQ) sets statewide rules for design, installation, operation, and maintenance, while county health departments typically handle permits and inspections in many areas. Some towns or municipalities may also require permits or have planning/building offices that coordinate with the county. Always verify which authority handles your project before starting.

  • Typical path: plan to work with your county health department for permits, with state standards from ODEQ guiding the process.
  • State role: ODEQ administers on-site wastewater programs to protect groundwater and public health.
  • Local role: your county health department and, if applicable, your town's building/planning office, may issue permits, perform inspections, and maintain records.

Permits you may need

  • On-site Wastewater System (OWTS) permit for installation or replacement.
  • Building or construction permit if required by the locality.
  • Final inspection approval after installation.
  • Variances or waivers if site conditions don't meet standard setbacks or soil requirements.

Step-by-step: getting a permit and inspection

  1. Confirm jurisdiction: contact your county health department and, if relevant, the local building/planning office to identify the correct permitting authority.
  2. Gather required materials: property survey, proposed system design, soil evaluation, and any existing septic records.
  3. Schedule soil evaluation: a licensed designer or county inspector will assess soil suitability and percolation rates.
  4. Submit application and documents: include site plan, system design, soil report, and pay applicable fees.
  5. Installation begins under permit: work must follow state standards and be performed by a licensed installer.
  6. Schedule inspections: request inspections at key milestones, including trenching/installation and final testing of the system.
  7. Final approval: after passing all inspections and tests, you'll receive final authorization to operate the system.

What inspectors look for

  • Proper setbacks from wells, streams, property lines, and structures.
  • Correct tank placement, baffles, access lids, and protection from damage.
  • Adequate drainfield size, soil absorption performance, and compaction limits.
  • Proper venting, pump sizing (if applicable), and electrical components for pumped systems.
  • Complete as-built drawings and ongoing maintenance accessibility.

Documentation checklist

  • Site plan showing the septic tank, drainfield, and setback distances.
  • Soil evaluation report with percolation test results.
  • System design specifications and installation instructions.
  • Permits, inspection records, and any final approvals or certificates.
  • Maintenance plan, including pumping schedule and any alarm or monitoring requirements.
  • Oklahoma Department of Environmental Quality – On-site Wastewater Management:

Septic Maintenance for Homes in Warner

Warner climate and soils

Warner sits in a region where hot summers meet occasional heavy rains and winter freezes. Clay-rich soils are common in parts of Oklahoma, which means slower natural drainage and a higher chance of surface dampness during wet seasons. These conditions can put more stress on a septic system's drain field, especially after storms or rapid snowmelt. Plan for proper drainage, avoid compaction over the drain field, and be mindful of how rainfall or irrigation patterns affect the system.

Regular pumping and inspections

  • 1) Pumping frequency: Most 1,000-gallon residential tanks in Warner are pumped every 3–5 years, depending on household size, water use, and tank size. Larger families or systems with high wastewater generation may require more frequent service.
  • 2) Annual professional check: Have a licensed septic pro inspect the tank, baffles, and the effluent filter (if installed). They should check for standing liquid, odors, and signs of trouble in the tank and at the drain field.
  • 3) Tank maintenance: During pumping, ensure the contractor clears the scum and sludge layers but leaves a small amount of settled solids to maintain microbial balance. Ask for a report of tank conditions and any needed repairs.
  • 4) Record keeping: Maintain a file of pumping dates, service notes, and any observations about rainfall, flood events, or plumbing changes in the home.

Protecting the drain field in Warner's soils

  • Keep heavy traffic off the drain field: vehicles, construction equipment, and oversized loads can compact soil and damage pipes.
  • Plant carefully: avoid deep-rooted trees and shrubs directly over the drain field; choose shallow-rooted ornamentals instead.
  • Manage water away from the field: redirect roof gutters and downspouts at least 10 feet away from the drain field; ensure surface water does not pond over the area.
  • Landscape with restraint: avoid adding mulch or soil excessively on top of the drain field, which can suffocate the distribution system.
  • Monitor for signs of trouble after storms: pooling water, lush green patches, or a strong septic odor near the field can indicate drainage issues needing professional evaluation.

Water usage and seasonal considerations

  • Use water-saving fixtures: low-flow toilets, showerheads, and faucet aerators reduce load on the system, especially in drought-prone Oklahoma years.
  • Stagger high-water activities: avoid running multiple high-flow appliances (dishwasher, washing machine, and showers) simultaneously on hot or wet days when the ground may be saturated.
  • Irrigation management: don't use sprinklers or irrigation near the drain field. In Warner's climate, summer irrigation can overwhelm the system if the field is already stressed from rain or drought.

Maintenance checklist

  • Do:
    • Schedule pumping every 3–5 years (adjust for usage and tank size).
    • Have annual inspections of the tank, baffles, and filters by a licensed professional.
    • Keep good records and post-pump reports for future reference.
    • Flushing: only human waste and toilet paper down toilets; minimize garbage disposal use.
  • Do not:
    • Pour grease, solvents, paint, pesticides, or chemicals down drains.
    • Flush wipes (even "flushable" ones) or diapers.
    • Drive or park on the drain field or cover it with heavy materials.
    • Rely on chemical drain cleaners to fix recurring clogs.

When to call a pro (Warner-specific cues)

  • Persistent gurgling noises, toilets draining slowly, or sewage odors in the house.
  • Water pooling, soggy areas, or strong odors above the drain field after rain.
  • After a flood or severe storm, have the system inspected before heavy re-use of the home's wastewater.

Official resources

Cost Expectations for Septic Services in Warner

Septic Tank Pumping and Cleaning

  • What it includes: removing sludge and scum, inspecting tank integrity and baffles, checking for leaks, and disposing of waste at an approved facility. Many services also note the tank's outlet condition and overall system accessibility.
  • Warner specifics: older homes and limited access in some parts of Warner can affect accessibility and pumping time, which nudges the price up slightly if a tank is deep or hard to reach. Tank size is a major driver of cost in this area; 1,000–1,500 gallon tanks are common.
  • Typical cost in Warner: roughly $250–$550 per pumping, with large or difficult-to-reach tanks $600–$700.

Septic System Inspection

  • What it includes: a certified inspector evaluates all components (tank, lids, pipes, and the drain field), notes any pending repairs, and provides a written report. A camera inspection of the lines may be added if warranted.
  • Warner specifics: lenders often require a formal septic inspection for home transactions, and older systems may need more thorough assessment due to wear on baffles and field performance in clay soils.
  • Typical cost in Warner: about $180–$350 for a standard residential inspection; comprehensive inspections with camera work can run $350–$500.

Perc Test / Soil Evaluation (for New Systems)

  • What it includes: soil percolation tests, site evaluation, and recommendations for system type (conventional trench, mound, or other design) based on Warner's soil conditions.
  • Warner specifics: clay-heavy or shallow soils common in some areas may necessitate alternative designs (mounds, sand beds), which changes scope and price.
  • Typical cost in Warner: $300–$800 depending on test complexity and lot access.

Septic System Installation (New)

  • What it includes: site evaluation, system design, permit coordination, tank installation, drain field or mound construction, backfill, startup, and final testing.
  • Warner specifics: local permitting through the county or state DEQ can add time and cost; soil conditions and required system type (including mound or ATU where appropriate) influence total price.
  • Typical cost in Warner: $12,000–$28,000 or more, driven by tank size, field type, and permit requirements.

Drain Field Repair / Replacement

  • What it includes: diagnosing field failure, excavating to access trenches, replacing or repairing piping, gravel, and mulch or turf restoration.
  • Warner specifics: clay soils and potential shallow bedrock can complicate layout and raise excavation costs; property grade and access also affect price.
  • Typical cost in Warner: repair $4,000–$15,000; full replacement $8,000–$25,000.

Tank, Pipe, and Component Repair

  • What it includes: replacing damaged lids, repairing or replacing baffles, inlet/outlet piping, effluent filters, and sealants; may include pumping to verify flow.
  • Warner specifics: repairs in older systems may uncover additional hidden wear; access under decks or sheds can add hours.
  • Typical cost in Warner: $200–$900 depending on part and labor.

Aerobic Treatment Unit (ATU) Maintenance

  • What it includes: routine service to keep the ATU running, cleaning or replacing components as needed, measuring output, and ensuring proper aeration and filtration.
  • Warner specifics: ATUs are present in some updated homes; maintenance frequency and unit type influence cost.
  • Typical cost in Warner: $60–$120 per service; annual maintenance plans often $300–$900.

System Add-ons and Upgrades

  • What it includes: effluent filters, alarms, pumping chambers, and control panels; sometimes a partial redesign to improve performance.
  • Warner specifics: newer or upgraded designs may be recommended if field performance has degraded or if local regulations change.
  • Typical cost in Warner: $500–$1,500 for common upgrades; larger or more complex upgrades can exceed $2,000.

Budgeting and Planning Tips

  1. Get multiple written estimates from licensed septic pros serving Warner.
  2. Include soil testing and permit costs in your budget; these are often required for new systems or major repairs.
  3. Build a contingency (15–25%) for unexpected field or component work.
  4. Plan for periodic maintenance (pumping every 3–5 years for typical homes; more often for homes with trash-disposal use or ATUs).

Official resources: