Septic in Adams County, CO

Adams County sits on the edge of Denver's growth, where rural porches meet new subdivisions and long, open mornings give way to busy afternoons. In many neighborhoods here, wastewater isn't automatically piped away to a distant treatment plant—it's managed right on the property you own. That's where septic systems come into the picture for countless homes.

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

Yes. Septic systems are common in many parts of Adams County, especially in unincorporated areas and older, rural-adjacent neighborhoods where city sewer lines haven't reached every lot. If you're buying a home, ask the seller or your realtor: Is the property connected to city sewer, or does it rely on a septic system? A septic failure or a poorly maintained tank can be an expensive surprise, but with a little upfront knowledge and routine care, you can keep it trouble-free.

Why homes typically use septic systems in Adams County

The county's growth pattern has created a mix of sewer-connected and stand-alone Wastewater solutions. In newer, denser developments, sewer lines are standard; in more rural pockets and places where extending pipes isn't practical, on-site systems offer a practical, cost-effective alternative. Soil variety, lot size, and the logistics of extending infrastructure all influence the choice. On-site systems let homeowners treat wastewater locally, which makes sense where infrastructure isn't feasible or affordable to replicate everywhere.

County growth history and how that has impacted septic coverage

Adams County experienced rapid population growth from the 1980s onward, with suburban sprawl around Denver and into former agricultural land. That expansion created a patchwork of sewered and unsewered areas. In many established neighborhoods, aging septic systems have required attention as populations grew and lot designs changed. Development pushed infrastructure planning to keep pace, leading to more inspections during property transfers and more emphasis on proper maintenance to protect groundwater and local soils.

High-level explanation (why septic exists here)

On-site systems exist here because they are a practical solution where centralized sewer isn't immediately feasible. They work with the local soils and space available on many lots, and when designed well and maintained, they provide reliable wastewater treatment close to home.

Tips at a glance

• Regular maintenance matters: schedule pump-outs as recommended, typically every 3–5 years depending on use.
• Protect the drain field: avoid parking, heavy equipment, or planting deep-rooted trees over the drain area.
• Be mindful of what goes in: fats, oils, greases, and harsh chemicals can disrupt the system.
• Know your system type and maintenance history so you're prepared for inspections and potential upgrades.

How Septic Is Regulated in Adams County

Governing authorities

• Adams County relies on a partnership between state and county agencies. The Colorado Department of Public Health and Environment (CDPHE) sets statewide standards for on-site wastewater systems (OWTS), including design requirements, permitting, operation, and environmental protection.
• Adams County Public Health enforces local health and safety codes, issues permits for new systems or modifications, and conducts inspections during key milestones of a project. Homeowners should expect coordination between the county and state agencies for permits, plan reviews, and compliance checks.

Permits, plan review, and inspections

• Before you install, modify, or replace a septic system, you generally must obtain a permit. The permit ensures the proposed system meets soil, setback, and drainage requirements and protects groundwater and the environment.
• Plan review steps (typical workflow):
  1. Hire a licensed OWTS professional to design the system.
  2. Submit the project application, site plan, soil evaluation, and design to Adams County Public Health (and, if required, to CDPHE).
  3. Pay applicable review and permit fees.
  4. Receive plan approval or follow up on requested changes.
  5. Schedule inspections at critical stages of construction.
• Inspections typically occur at:
  • Initial trench andComments: before backfill
  • Septic tank installation and connections
  • Final installation, backfill, and system function test
• If the project doesn't meet code or the design needs adjustment, inspectors will require corrections before final approval and utilization of the system.

Licensing and professionals

• Only licensed OWTS designers, installers, and pumpers should be engaged for design, installation, and servicing. Verify licenses and insurance before starting work.
• Your installer should provide: a stamped design, permit numbers, inspection schedules, and maintenance records.

Maintenance and ongoing compliance

• Regular maintenance helps prevent failures:
  • Have the septic tank pumped every 2–5 years, depending on tank size, household inflow, and usage.
  • Keep lids accessible and protect the area from heavy compaction and vehicle traffic.
  • Use water wisely: spread out loads of heavy water use, fix leaks, and install water-saving fixtures.
  • Avoid flushing or pouring fats, oils, grease, chemicals, solvents, or non-biodegradable items.
• Maintain documentation: keep the permit, plan approvals, inspection reports, and pumping records in a safe place in case of future sale or regulatory review.

What to do if you suspect a problem or need repairs

• If you notice backups, odors, pooling, or surface deterioration, contact your licensed OWTS professional and Adams County Public Health promptly.
• If a system is failing or not meeting code, county inspectors may require temporary restrictions, repairs, or replacement. Failing to comply can lead to fines or enforcement actions.
• For guidance during a potential repair, expect an inspection of the repair work, re-sealing, and, if necessary, updated plans and re-permitting.

Helpful official resources

• Adams County Public Health (On-site Wastewater / OWTS guidance and permit information):
• Adams County specific OWTS pages (official guidance and forms):
• Colorado Department of Public Health and Environment – On-site Wastewater Treatment Systems (OWTS) program:
• CDPHE OWTS design and setback standards (statewide requirements and guidance): https://cdphe.colorado.gov/wastewater-treatment-systems/onsite-wastewater

Soil, Groundwater & Environmental Factors in Adams County

Soil Conditions and Drainage in Adams County

Adams County sits along the Front Range with a mosaic of soil types. Yard soils on developed lots can range from sandy loam to heavier clays, often with some zones compacted by construction. How a soil drains and absorbs water is a primary driver of septic system success: well-drained soils let effluent percolate, while poorly drained soils can slow infiltration and increase the risk of surface seepage or effluent buildup.

• Use the NRCS Web Soil Survey to identify your property's soil texture, drainage class, and depth to restrictive layers. This helps you gauge absorption capacity before designing or relocating a system.
• General guidance about septic systems and proper maintenance is also available from EPA's septic information, which covers health risks, maintenance schedules, and best practices: https://www.epa.gov/septic
• For soil and drainage data as referenced above, the NRCS Web Soil Survey remains a primary official resource: https://websoilsurvey.nrcs.usda.gov/

Practical, Homeowner Steps

1. Gather soil and groundwater context for your property:
2. Look up soil texture and drainage class on Web Soil Survey (see link above).
3. Note any areas that are seasonally damp or near slopes that channel surface water toward the planned system.
4. Confirm regulatory requirements:
5. Check CDPHE OWTS guidelines and any Adams County health department specifics for permit requirements and setbacks. See the link in Resources.
6. Get a professional site evaluation:
7. Have a licensed septic designer or local health authority perform a site evaluation to determine suitable system types and required setbacks given your soil and groundwater conditions.
8. Plan for drainage management:
9. Incorporate landscape grading and surface drainage strategies to shield the drainfield from runoff and excess moisture.
10. Document and maintain:
11. Keep records of soil data, system design choices, permits, and maintenance schedules to support long-term performance and compliance.

Helpful Resources

• CDPHE On-Site Wastewater Treatment Systems: https://cdphe.colorado.gov/onsite-wastewater-treatment-systems
• EPA Septic Systems overview: https://www.epa.gov/septic
• NRCS Web Soil Survey: https://websoilsurvey.nrcs.usda.gov/

Typical Septic System Types in Adams County

Conventional gravity system

• How it works: One or two-part septic tank separates solids from liquids, then clear effluent flows by gravity into a network of perforated pipes in a drainfield.
• Typical site: Requires adequate soil depth and drainage, with enough space for trenches or beds.
• Pros: Generally lower upfront cost, simple operation, long track record.
• Cons: Performance hinges on soil percolation; may not fit tightly compacted or shallow soils.

Mound system

• How it works: Used when native soils are too shallow or poorly draining. A raised "mound" of fill, usually sand, sits above the natural soil, with a dosing system delivering effluent to the sand bed.
• When it's used: Common in areas with high water tables or restrictive soils.
• Pros: Expands usable area on small or challenging lots; good treatment in marginal soils.
• Cons: Higher installation cost and more maintenance considerations than conventional systems.

Chamber system

• How it works: Replaces rigid gravel trenches with modular plastic chambers that create wide, shallow infiltration beds.
• Benefits: Often faster installation, lighter concrete load, adaptable to sloped sites or narrow lots.
• Pros: Flexible design, good performance when properly installed.
• Cons: Still requires suitable soil and adequate setback from wells and structures.

Aerobic Treatment Unit (ATU)

• How it works: An above‑ground or partially buried unit pre-treats wastewater with aerobic bacteria, then effluent is discharged to a drainfield or irrigation system.
• When chosen: Helpful for limited space or challenging soils; can produce a very high level of treatment.
• Pros: Smaller drainfield footprint; consistent performance in uneven soils.
• Cons: Higher energy use, more ongoing maintenance and professional servicing, stricter monitoring.

Low-Pressure Pipe (LPP) / Pressure dosing systems

• How it works: Small-diameter perforated pipes receive distributed effluent under low pressure to multiple points in the field.
• When used: Good on sloped sites or soils with variable absorption; allows more uniform field loading.
• Pros: Efficient use of space, adaptable to certain site limitations.
• Cons: Requires a reliable power source and regular maintenance checks.

Sand filter and evapotranspiration (ET) bed systems

• How it works: Treated wastewater passes through a sand filter or an ET bed where moisture is removed by evaporation and plant uptake.
• When appropriate: In regions with limited absorption capacity or climate considerations; often paired with other treatment steps.
• Pros: Additional polishing of effluent; can work where standard drains are problematic.
• Cons: Site and climate dependent; typically higher design and maintenance needs.

Drip irrigation / landscape reuse systems

• How it works: Treated effluent is distributed through drip lines or other irrigation methods to designated landscape areas.
• Pros: Water reuse potential; can help manage drainage and create usable outdoor spaces.
• Cons: Strict design and setback requirements; requires ongoing maintenance and monitoring for roots and clogging.

Steps to determine the right system for your lot

1. Get a licensed site evaluation to assess soil, groundwater, and drainage.
2. Review soil tests and percolation data to identify feasible drainfield options.
3. Compare upfront costs, long‑term maintenance, and potential landscape impact.
4. Choose a system that meets local code, county permits, and long‑term reliability needs.

Official resources:

• Colorado Department of Public Health and Environment – Onsite Wastewater Treatment Systems:
• Adams County Health Department – Septic Systems:

Typical Septic Issues Across Adams County

Common Causes of Septic Problems in Adams County

Homes here share similar challenges: aging tanks, soil and site constraints, and water-use habits. Quick summaries:

• Age and wear: Many systems are 20+ years old. Cracked tanks, degraded baffles, and corroded components are common failure points.
• Tree roots and landscaping: Roots intrusion can crack pipes and clog the drainfield.
• Overloading the system: Excessive wastewater from large families, frequent garbage disposal use, or heavy laundry days can overwhelm the tank and leach field.
• Installation and design issues: Undersized tanks, improper soil absorption areas, or incorrect venting can lead to early failures.
• Soil and site conditions: High water tables, clay soils, or shallow bedrock slow or stop effluent absorption.
• Household chemicals: Harsh cleaners, solvents, paints, and fats/oils disrupt beneficial bacteria and harm system function.
• Rain and groundwater: Storm runoff or roof drainage directed at the drainfield can flood the system and reduce treatment efficiency.

Warning Signs to Watch For

Look for these symptoms to catch problems early:

• Slow drains, frequent clogs, or gurgling plumbing
• Sewage smells or damp, soggy areas above the drainfield
• Pooling or surface mats of effluent in the drainfield area
• Backups in toilets, sinks, or floor drains, especially during heavy rainfall
• Lush, unusual plant growth over the drainfield (healthy weeds can indicate leaking effluent)

Tank and Pumping-Related Issues

Specific problems often come from the tank itself or its components:

• Cracked, leaking, or collapsing septic tank
• Broken or missing baffles inside the tank
• Pump failures in systems with effluent pumps or pump chambers
• Excessive scum or sludge buildup that reduces tank volume and prevents proper flow
• Inadequate pumping intervals due to misestimates of tank size or household usage

Drainfield and Soil-Related Issues

Drainfield problems are the most common cause of failures:

• Soil compaction or poor soil percolation beneath the drainfield
• Drainage pipes clogged by roots or sediment
• Surface effluent surfacing due to saturated soil or a failed distribution system
• Vegetation changes above the drainfield (e.g., unusually lush growth) signaling drainage issues

Water Use and Drainage Patterns

How water is managed around the property matters:

• High water use in short periods can flush solids into the drainfield
• Roof leaders, foundation drains, or sump pumps directed toward the septic system
• Heavy irrigation near the drainfield, especially in dry seasons

Maintenance & Prevention Steps

Follow these practical steps to reduce risk and extend system life:

1. Map your system and know exactly where the tank, pump chamber, and drainfield sit. Confirm locations with a licensed professional.
2. Schedule regular inspections and pumping by a qualified septic contractor. Maintenance intervals depend on tank size and household use; avoid letting solids build up.
3. Use water wisely: distribute loads across the day, fix leaks, and upgrade old fixtures to water-efficient models.
4. Protect the drainfield: keep vehicles and heavy equipment off the absorption area; plant only shallow-rooted vegetation nearby.
5. Divert surface runoff and irrigation away from the drainfield; install and maintain proper grading, trenches, and splash pads if needed.
6. Use septic-safe products and minimize chemical cleaners, solvents, and non-biodegradable items entering the system. For guidelines, see the CDPHE Onsite Wastewater Systems program (and EPA septic care tips (

How to Respond to a Suspected Issue

If you notice trouble:

1. Limit water use and avoid heavy usage (laundry, lots of dishwashing) until assessed.
2. Do not pump out unless advised by a pro; improper pumping can cause more harm.
3. Inspect for clear sources of contamination or odor and document symptoms.
4. Call a licensed septic professional to inspect tanks, baffles, and the drainfield. Immediate concerns may require urgent attention.

When to Call a Pro

• Backups or strong sewage odors persist
• Visible effluent on the surface or wet, boggy areas over the drainfield
• Recurrent clogs, gurgling sounds, or repeated pump failures
• After severe rainfall or flooding near the system

Official resources:

• Colorado CDPHE Onsite Wastewater Systems (OWTS) program:
• U.S. EPA Septic Systems:

Septic Inspection, Permits & Local Oversight

Who regulates septic systems in Adams County

• In Adams County, onsite wastewater systems are overseen by the county's Environmental Health program, in coordination with the Colorado Department of Public Health and Environment (CDPHE). Some areas may fall under the Tri-County Health Department (TCHD) for certain services. Always confirm which authority governs your specific address, as municipalities within the county can have their own requirements.
• Official references:
  • CDPHE Onsite Wastewater program:
  • Tri-County Health Department Onsite Wastewater:

Permits you may need

• Onsite Wastewater System (OWTS) permit for new systems, replacements, or major modifications.
• Repair or alteration permit when excavation or changes to the system are needed.
• Connection permit if you're tying into a municipal sewer (where available in the area).
• If you're unsure which permit applies, start by checking with Adams County Environmental Health and the relevant local district or the county's official site (start at https://www.adcogov.org'>https://www.adcogov.org).

The permitting process (step-by-step)

1. Confirm the correct permitting authority for your address.
   • Some areas are governed by Adams County Environmental Health; others may be handled by a local district or city health department. Use the official resources above to determine the right agency.
2. Hire a licensed professional.
   • A Colorado-licensed onsite wastewater designer and a licensed installer are typically required to develop the plan, perform soil evaluation, and complete the installation.
3. Prepare and submit your plan package.
   • Include system design, site sketch, soil/percolation data, and any required forms and fees.
4. Plan review and approval.
   • The reviewing agency will assess setback requirements, soil suitability, and compliance with state and local codes. You may need to revise the plan.
5. Install the system.
   • Work must be performed by a state-licensed installer under the approved plan. Soil and installation integrity are verified during inspections.
6. Pass inspections and obtain final approval.
   • Inspections occur at key milestones (pre-installation, during installation, final completion). A final inspection confirms proper function and issuance of the permit.

Inspections during installation

• Pre-installation/site evaluation inspection to verify conditions before any work begins.
• Trench and installation inspection to confirm placement, depths, and component alignment.
• Backfill, lid/sealing, and cover inspection to ensure proper burial and accessibility.
• Final inspection for system operation, pump/effluent testing (where required), and permit closure.

Real estate transactions and septic inspections

• A septic inspection can be a prudent part of buying or selling a home in Adams County. Lenders may require a current review, and sellers may need to provide records, including as-built drawings and maintenance history.
• If a system fails or requires repairs, addressing these before closing can prevent delays. Coordinate with the local health department and your real estate professional to determine what inspections or disclosures are needed.

Fees, timelines & tips

• Timelines: Plan for plan review and permit approval to take multiple weeks (typical ranges vary by project complexity and workload).
• Fees: Permit issuance, plan review, and inspection fees vary by system size and scope. Expect multiple line items (design, permit, inspections).
• Pro tips:
  • Hire licensed designers and installers familiar with Colorado OWTS rules.
  • Keep a maintenance log and seasonal service records for future inspections or real estate activity.
  • Check soil tests and system layout are current (soil conditions can change over time and affect compliance).

Resources & contacts

• Adams County Government — start point for local environmental health inquiries: https://www.adcogov.org
• CDPHE Onsite Wastewater Program: https://cdphe.colorado.gov/onsite-wastewater
• Tri-County Health Department Onsite Wastewater: https://www.tchd.org/713/Onsite-Wastewater

Cost Expectations for Septic Services in Adams County

Septic Tank Pumping

• What it includes: removal of liquid and solid waste from the tank, checking baffles, lid condition, and access risers; often paired with a quick tank health check. In Adams County, pumping is commonly scheduled every 1–3 years depending on household water use and tank size, with attention to groundwater and soil conditions that can affect sludge buildup.
• Typical cost in Adams County: roughly $250–$500 for a standard residential tank; larger tanks, difficult access, or added services (like camera inspection) can push toward $600–$800.
• Things to watch: if your tank hasn't been pumped in several years, expect a higher estimate; some homes with grease traps or ATUs may incur extra fees.
• Official resources: Colorado Department of Public Health & Environment Onsite Wastewater Systems (OWTS) guidance; Adams County Environmental Health information. •

Septic System Inspection

• What it includes: visual inspection of tanks, lids, and access, baffles and pumps, field evidence (surface distress, odor, wet spots), and a written report; may include a dye test or camera inspection for a deeper look.
• Adams County specifics: many real estate transactions require a licensed septic inspection as part of the sale; inspections can be a prerequisite for mortgage lenders or county permit considerations.
• Typical cost in Adams County: basic inspection $150–$350; more thorough inspections with camera work or dye testing can range $400–$900.
• Why it matters here: if you're buying, budgeting for a full system assessment can prevent surprises after closing.
• Official resources: CDPHE OWTS overview; Adams County environmental/health pages. • https://cdphe.colorado.gov/onsite-wastewater-treatment-systems

Emergency Septic Service (Backups and Immediate Repairs)

• What it includes: urgent pumping, component checks, temporary flow management, and rapid field diagnosis to prevent contamination or damage.
• Adams County specifics: winter and storm-related outages can create backups; counties often provide priority listings for emergency responders and licensed technicians.
• Typical cost in Adams County: call-out fees in the $100–$300 range, plus pumping or repair costs as needed.
• Official resources: EPA septic emergency guidance; CDPHE oversight pages. https://www.epa.gov/septic • https://cdphe.colorado.gov/onsite-wastewater-treatment-systems

Cities & Communities in Adams County With Septic Systems

Westminster

Westminster is largely served by municipal sewer, but a few fringe or older parcels may still rely on septic systems. If your property isn't connected to the sewer line, or if you've inherited an older home with an on-site system, septic services may be needed.

• Why you might need septic services here:
  • Properties on the rural outskirts or with shared/private septic lines.
  • Older homes not yet connected to sewer or undergoing a partial sewer retrofit.
  • Drainage or odor issues that suggest pump-out, inspection, or system repair.
• Common septic services:
  • Tank pumping and cleaning on a routine schedule.
  • System inspection, including drain-field assessment.
  • Repairs to sewer lines, tank risers, or gravel beds, and eventual replacements if the system is failing.
  • Drainfield maintenance to restore absorption capacity.
• Quick steps to get service:
  1. Confirm sewer connection with Westminster Public Works.
  2. Hire a licensed septic professional familiar with Adams County.
  3. Schedule a diagnostic inspection to determine the appropriate next steps.
  4. Complete any required permits and inspections for repairs or replacement.
• Resources:
  • City of Westminster (Public Works/Sewer information):

Commerce City

Commerce City is largely sewered, but certain outlying parcels or older subdivisions may still rely on septic systems. Residents buying property outside the main sewer network or with aging septic components may need service.

• Why you might need septic services here:
  • Homes on the far north or east edges not yet connected to the sewer system.
  • Upgrading or maintaining aging septic tanks and drain fields.
  • Odor, backup, or leakage issues indicating a pump-out or repair is needed.
• Common septic services:
  • Routine pumping and sludge removal.
  • Tank inspection, leach-field soil testing, and field repairs.
  • Tank sealing, lid replacement, or line cleaning.
• Quick steps to get service:
  1. Verify sewer status with the local public works department.
  2. Engage a licensed septic contractor familiar with Adams County.
  3. Schedule evaluation to determine whether pumping, repair, or replacement is needed.
  4. Follow through with required inspections and permits.
• Resources:
  • City of Commerce City:
  • CDPHE Onsite Wastewater:
  • CDPHE Onsite Wastewater: https://cdphe.colorado.gov/onsite-wastewater

Brighton (partial in Adams County)

Brighton straddles Adams and Weld counties. In the Adams County portion, some properties may rely on septic systems, especially those outside formal sewer lines or in older subdivisions.

• Why you might need septic services here:
  • Properties on the fringes not yet connected to sewer.
  • Aging systems requiring pumping, inspection, or repair.
  • Property transactions that trigger OWTS evaluations.
• Common septic services:
  • Routine pumping, tank and drain-field assessments.
  • Repairs to tanks, lids, or pipes.
  • Drainage field restoration or replacement as needed.
• Quick steps to get service:
  1. Confirm sewer status with Brighton's or county public works.
  2. Hire a licensed septic contractor familiar with Adams County regulations.
  3. Obtain any required permits and schedule inspections.
  4. Complete follow-up testing if mandated.
• Resources:
  • City of Brighton (partial Adams County area): https://www.brightonco.gov/
  • CDPHE Onsite Wastewater: https://cdphe.colorado.gov/onsite-wastewater

Unincorporated areas of Adams County and small communities not listed above may also rely on on-site systems. For general guidance, visit the Colorado Department of Public Health and Environment's Onsite Wastewater program and your county's public works or planning department for current local requirements and service recommendations.

Septic vs Sewer Across Adams County

How to tell what kind of system serves your home

• Check your latest utility bill. If you see a line labeled "Sewer," you're connected to a municipal or district sewer system. If there's no sewer charge, you likely rely on a septic system or a private drain field.
• Inspect your property for a septic tank lid or drain field indicators. If you don't see a clear connection to a street sewer line, your home may be on septic.
• When in doubt, contact your local sewer district or the Colorado Department of Public Health and Environment's Onsite Wastewater Treatment Systems program to confirm. See official resources below for steps and records.

Septic vs Sewer: pros and cons at a glance

• Septic system (on-site)
  • Pros: potential lower or predictable recurring costs, on-site control and independence from sewer rate changes.
  • Cons: you're responsible for pumping, inspections, and drain-field maintenance; failure can be costly and impact groundwater if not properly managed.
• Municipal sewer (connection to a district or city plant)
  • Pros: no on-site tank pumping or drain-field wear to manage; centralized treatment handled by the utility.
  • Cons: monthly or quarterly sewer charges that can rise; you're at the mercy of rate changes and service interruptions.

Costs and maintenance basics

• Septic system maintenance
  • Schedule regular pumping every 3–5 years for typical households; more frequent pumping may be needed with heavy use or some leach fields.
  • Annual or semiannual inspections by a licensed septic professional help catch problems early.
  • Practice water-use discipline and protect the drain field from heavy loads, chemicals, and parking or construction over the area.
• Sewer connection maintenance
  • Expect a monthly or quarterly sewer bill from your district or utility.
  • Minimal on-site maintenance, but you'll pay for service and any city/district repairs when issues arise.

When to consider connecting to sewer (from septic)

1. Verify your property's service status with your local sewer district or Adams County records. If you're on septic, you'll need confirmation of eligibility to connect.
2. Obtain a formal connection request or permit from the local district or city. This includes plan reviews and potential impact/connection fees.
3. Hire a licensed contractor to install the service lateral from your home to the main sewer line, as required.
4. Schedule inspections and finalize the connection per the issuing agency's requirements. If you abandon the septic, follow CDPHE guidance to decommission it properly.

What to do if your septic is failing or compromised

• Limit water use to reduce load on the system until service is restored.
• Call a licensed septic contractor for a diagnosis, pumping, and potential repair or replacement.
• Coordinate with CDPHE guidance for safe decommissioning if you plan to abandon the system or switch to sewer.
• Check if your property needs a sewer connection and pursue the required steps with your local district or county.

Resources you can trust

• Colorado Department of Public Health and Environment — Onsite Wastewater Treatment Systems (OWTS) program:
• Colorado Department of Public Health and Environment — Septic Systems information:
• U.S. Environmental Protection Agency — Septic systems overview: https://www.epa.gov/septic

(Note: For the most accurate, up-to-date guidance in Adams County, contact your local sewer district or Adams County official records to identify your exact service provider and requirements.)