Septic in Blythewood, SC

Blythewood's quiet streets, moss-draped oaks, and quick drive to Columba's bustle create a feel that blends country charm with modern families. In many Blythewood yards, private septic systems are a familiar, practical part of daily life—quiet, dependable, and something neighbors understand well. If you own or are buying a home here, you should expect septic to be part of the picture, unless the property is already connected to a municipal sewer line.

Is septic common in Blythewood? Yes. A large share of Blythewood homes rely on on-site septic systems. Some newer developments near town lines connect to public sewer, but a big portion of our area continues to use septic tanks with drain fields or mound systems where soil or space limits other options.

Should I expect septic if I own or buy a home? In Blythewood, the odds are high you'll be dealing with a septic system either now or later. When you're buying, include a septic inspection in your due diligence and ask for records: tank size, age, last pump date, and the drain-field's condition. If you already own a home, plan regular maintenance and pumping, typically every 3 to 5 years, and practice good water-use habits to keep the system healthy.

Why do homes here typically use septic systems? Because Blythewood grew outward across wooded hills and farmland long before city sewer lines reached every street. On-site disposal makes sense where extending sewer mains would be costly or impractical. Local soils and groundwater patterns shape the design of each system, but a properly planned septic system can reliably treat wastewater on site, preserve landscape, and support flexible, affordable property development.

High-level explanation: Septic exists here to provide a practical wastewater treatment solution tailored to our land, soils, and development patterns. When well-designed and well cared for, a septic system integrates with everyday life without the infrastructure overhead of a city sewer, which is a core part of what Blythewood households rely on.

As you read on, you'll find practical, neighborly guidance from a local septic pro who helps Blythewood families keep systems running smoothly.

Where Septic Systems Are Common in Blythewood

Where septic is most common

• Rural parcels outside sewer service boundaries: Blythewood's growing rural neighborhoods and farmland areas rely on on-site wastewater treatment.
• Older subdivisions built before sewer expansion: Many homes in traditional Blythewood layouts use septic because centralized sewer didn't reach these blocks when they were developed.
• Farms, equestrian properties, and low-density lots: Large lots and agricultural uses often depend on septic systems for wastewater management.

Why these patterns exist

• Cost and practicality of extending sewer lines: Laying mains through rural Blythewood is expensive and slower to justify, so on-site systems remain the practical option.
• Property size and zoning: Larger lots and lower-density zoning align with septic functionality, whereas dense urban areas favor gravity-fed sewer connections.
• Soil and groundwater realities: Blythewood's soils vary. Well-draining soils and adequate depth to groundwater support conventional drainfields, while clay-rich soils or high water tables may require alternative designs (mound systems, pressure-dose systems, or ATUs) to ensure safe treatment and absorption.
• Distance to existing sewer mains: If your lot is far from sewer lines, sewer expansion may not be planned in the near term, making septic the common choice for wastewater disposal.

How to tell if your Blythewood property uses septic

1. Check property records or your plat for a septic permit or system location.
2. Look for a clearly identifiable septic access, such as a concrete or plastic lid, cleanout, or a stamped cover in the yard.
3. Inspect the drainfield area for flat, grassy patches that appear healthier or overly lush compared with surrounding turf.
4. Contact the South Carolina Department of Health and Environmental Control (DHEC) onsite wastewater program to verify permits and system type.
5. If in doubt, hire a licensed septic contractor or inspector to perform a full evaluation.

Common septic system types you'll see in Blythewood

• Standard gravity septic tanks with a drainfield: Most typical for well-drained soils on middle-to-large lots.
• Mound systems: Used where soils are too shallow or water tables are high; these rise above ground level with an engineered drainfield to improve absorption.
• Aerobic treatment units (ATUs) or compact systems: Found on smaller lots or where space is limited; these require regular maintenance and are followed by a drip or spray irrigation final stage.
• Alternative systems: In some parcels with challenging soils, specialists may install specialty designs (sand filters or advanced treatment units) to meet local setback and performance requirements.

Maintenance considerations for Blythewood septics

• Schedule regular pump-outs every 3–5 years (or as recommended by your designer) based on household size and usage.
• Conserve water to reduce load on the drainfield: distribute loads, fix leaks, and use water-efficient fixtures.
• Protect the drainfield: keep cars and heavy equipment off the drainfield area; avoid planting trees with deep roots nearby.
• Avoid putting fats, oils, grease, harsh chemicals, or septic additives down the drain; follow the manufacturer's and local health department guidelines.
• Stay informed with local regulations and system-specific maintenance requirements from DHEC and your installer.

Official resources

• South Carolina Department of Health and Environmental Control (DHEC) – Onsite Wastewater Systems:
• U.S. Environmental Protection Agency – Septic Systems (general guidance and best practices):

Septic vs Sewer: What Homeowners in Blythewood Should Know

How septic systems differ from sewer systems

• Septic: Your property has a private septic tank and drainfield. Wastewater is treated on-site, and responsibility for upkeep rests with the homeowner.
• Sewer: Your home connects to a municipal sewer line. Wastewater is transported to a treatment plant, and the utility typically handles maintenance beyond your property line.
• In Blythewood, many homes rely on septic, but some properties near evolving sewer lines may have access to municipal service. Availability depends on location, infrastructure upgrades, and local permitting.

When sewer service is a realistic option in Blythewood

• Proximity to existing sewer mains or planned expansions by the county or utility.
• Home value or future plans where a sewer connection could simplify maintenance and increase resale appeal.
• Zoning, subdivision development, or new construction projects that bring sewer access closer to your lot.
• Steps to explore: verify sewer availability with your local utility or county, review current maps, and ask neighbors about recent connections.

Maintenance responsibilities and costs

• Septic owners are responsible for pumping, inspections, and protecting the drainfield.
• Sewer customers pay regular utility bills that cover treatment and maintenance by the municipality.
• Maintenance basics:
  • Schedule septic pumping typically every 3–5 years (or per soil/usage, as advised by a licensed professional).
  • Avoid flushing non-biodegradables, grease, solvents, or harsh chemicals.
  • Conserve water to reduce load on the system.
  • Protect the drainfield from heavy equipment, and plant shallow-rooted grasses over the area.
• Typical costs:
  • Septic pumping and inspection: several hundred dollars, depending on system size and local rates.
  • Sewer service: monthly or quarterly bills set by the utility, with occasional connection and hookup fees.
• Official guidance: for on-site wastewater systems and consumer tips, consult the South Carolina DHEC resources and EPA's septic information.

Signs your system or sewer line needs attention

• Septic signs:
  • Slow drains, gurgling sounds, or toilets backing up.
  • Foul odors near the septic tank, drainfield, or plumbing.
  • Wet, lush, or soggy areas above the drainfield; standing water in the yard can indicate a problem.
• Sewer line signs:
  • Multiple drains in the home backing up or odors in the yard near the street.
  • Sewer backups after heavy rainfall or nearby construction.
• Immediate actions: limit water use, avoid adding chemicals, and contact a licensed septic professional or your utility if you notice persistent issues.

Quick decision guide for Blythewood households

1. Confirm whether a sewer main is accessible to your property via the county or utility maps.
2. Compare long-term costs: septic maintenance vs. sewer bills and any connection fees.
3. Assess yard and drainfield conditions; consider future development plans in Blythewood that could change access.
4. Talk to a licensed local contractor or the utility to understand the best option for your lot, timelines, and required permits.

Official resources

• South Carolina Department of Health and Environmental Control (SC DHEC) On-Site Wastewater Program:
• U.S. Environmental Protection Agency (EPA) Septic Systems information:

Typical Septic System Types in Blythewood

Conventional gravity septic systems

A standard setup for homes with adequate soil depth and infiltration ability. Treated wastewater flows by gravity from the house to a septic tank, where solids settle and scum forms. Clearer effluent exits to a soil absorption field (drainfield) through perforated pipes.

• How it works
  • Septic tank: solids stay in the tank; liquids move on.
  • Drainfield: effluent is distributed into the soil for natural treatment.
• Typical components
  • Septic tank, distribution box, perforated lateral lines, gravel or chamber drainfield.
• Pros
  • Simple design, fewer moving parts, generally lower upfront cost.
  • Long track record of performance when soils are suitable.
• Cons
  • Requires well-draining soil and enough depth to the seasonal water table.
  • Poor maintenance or undersized systems can release solids to the drainfield, reducing effectiveness.

Pressure distribution systems

Used when soils have variable permeability or trenches need even loading. A pump delivers effluent from the tank to multiple laterals to ensure uniform absorption.

• How it works
  • A pump or siphon moves effluent to a network of laterals under controlled pressure.
• Pros
  • More even distribution, less likelihood of trench overload, better performance on challenging sites.
• Cons
  • More components means higher maintenance and potential failure points.
  • Typically higher installation costs.

Mound systems

Installed where native soils don't adequately drain or when the seasonal high water table is shallow. An elevated sand-filled mound sits over the native soil, with a drainfield built on top.

• How it works
  • Tank and dosing pump push effluent up into a sand-filled mound with a drainage system.
• Pros
  • Enables wastewater treatment where conventional systems won't function.
  • Can handle limited soil depth and poor percolation.
• Cons
  • Higher initial cost and ongoing maintenance.
  • Requires more space and careful design to prevent overloading.

Sand filter and Advanced Treatment Units (ATU)

These systems provide additional treatment before the drainfield, often used when soil conditions are marginal or tighter local regulations apply. They may include a separate sand or textile filter bed and may be followed by a conventional drainfield or pressurized distribution.

• How it works
  • ATU or sand filter treats effluent to a higher level before disposal.
• Pros
  • Improved effluent quality, expanded suitability for difficult sites.
• Cons
  • More complex, higher upfront and maintenance costs; requires regular servicing.

Evapotranspiration (ET) beds and other specialized options

Less common in Blythewood but found in areas with hot, dry conditions or very shallow soils. ET beds rely on evaporation and plant transpiration to move water away from the drain area.

• How it works
  • Water moves upward and away through soil and plants rather than deep drainage.
• Pros
  • Minimal groundwater impact in suitable climates.
• Cons
  • Not universally applicable; performance depends on climate and site specifics.
• Cons
  • Limited availability and higher design oversight required.

Practical planning steps for Blythewood homeowners

1. Have your site professionally evaluated to determine soil depth, groundwater, and percolation.
2. Work with a licensed designer to select a system type that matches soil conditions and lot layout.
3. Confirm local permitting and inspection requirements for Blythewood/Richland County.
4. Budget for potential upgrades (e.g., mound or ATU) if soils are marginal.
5. Establish a maintenance plan: pump-outs every 3–5 years (or as advised) and periodic inspections of tanks, lids, and drainfields.

Helpful resources

• EPA: Septic Systems and their care —

Common Septic Issues in Blythewood

Soil and infiltration challenges in Blythewood

• Blythewood sits on soils that can be heavy and clay-rich, which slows water infiltration and causes slower drainage from the drainfield. When absorption is limited, effluent can back up or surface sooner than expected.
• Seasonal moisture and a tendency toward a higher water table in spring can flood the drainfield area, reducing the system's ability to treat wastewater effectively.
• Tree roots nearby the septic system are a frequent problem in wooded Blythewood neighborhoods. Aggressive roots can wrap around conduct pipes or crack the tank and drainfield, leading to leaks and backups.

Symptoms to watch for in Blythewood homes

• Slow drains, gurgling toilets, and frequent backups, especially after heavy rain.
• Foul odors near the septic tank cover, ydawnside, or around the drainfield.
• Wet or lush green spots above the drainfield, which may indicate perched water or effluent surfacing.
• Water bills that seem higher without obvious reasons, signaling hidden water use or system stress.

Drainfield and tank issues common in this area

• Drainfield failure is more likely where soil infiltration is slow or the drainfield is undersized for the household load. In Blythewood, clay soils and seasonal saturation amplify this risk.
• Septic tanks that are not routinely pumped accumulate solids (sludge and scum), reducing the volume available for wastewater and pushing solids toward the outlet, which can clog the drainfield.
• Root intrusion into septic lines or the tank itself is a frequent cause of slow drainage or sudden backups in mature Blythewood landscapes.
• Inconsistent maintenance, such as skipping pumping or overloading the system with water (long showers, multiple loads of laundry, or running irrigation during wet periods), accelerates wear on the system.

Maintenance tips to reduce Blythewood-specific risks

1. Schedule regular inspections and pump-outs based on household size and tank size (typically every 3–5 years, but verify with a licensed contractor).
2. Conserve water:
   • Install high-efficiency fixtures and spread laundry over multiple days.
   • Avoid letting runoff or sump pumps discharge into the septic system; redirect water away from the drainfield.
3. Protect the drainfield:
   • Keep vehicles, heavy equipment, and compacting activities off the drainfield area.
   • Plant only shallow-rooted vegetation nearby; avoid trees and shrubs with aggressive roots too close to the system.
4. Landscape and landscaping around the system:
   • Maintain a clear area around the tank and access risers for easy inspection and pumping.
   • Use rain gardens or swales to manage runoff away from the drainfield during storms.
5. Use household chemicals and fats properly:
   • Don't pour grease, oil, solvents, or toxic cleaners down the drain; these can kill beneficial bacteria and harm the system.

When to call a professional

• Sudden sewage odors, backups, or wet spots appear in the yard.
• The system makes unusual noises, or you notice standing water over the drainfield after rain.
• You've had repeated pumping with little improvement, or you suspect root intrusion or damaged lines.
• You're planning major landscaping or renovations near the septic system or moving to Blythewood and want a system assessment.

Official resources

• EPA SepticSmart:
• Clemson Cooperative Extension (home septic maintenance tips): https://www.clemson.edu/extension/

Septic Inspection, Permits & Local Oversight

What oversight looks like in Blythewood, SC

Blythewood sits in Richland County, where on-site wastewater systems are regulated to protect public health and groundwater. The South Carolina Department of Health and Environmental Control (DHEC), in partnership with the county Environmental Health office, reviews system design, soil suitability, and installation practices. You'll interact with the county's environmental health staff for permits, inspections, and final approvals. Expect a review of site plans, setbacks from wells and property lines, and proper tank and drain-field placement before work begins.

Permits you may need

• New septic system installation or replacement
• Major repairs or system upgrades (changing drain-field size, adding capacity, or altering components)
• Alterations that affect wastewater flow or drainage (e.g., changing the use of an area of the property)
• Relocation or replacement of tanks, distribution boxes, or drain lines

Note: Some minor repairs may not require a permit, but it's wise to confirm with Richland County Environmental Health before starting any work. Always obtain the correct permit before youdig in to avoid fines or system noncompliance.

The permitting process (step-by-step)

1. Hire a licensed on-site wastewater contractor (and, if needed, a designer or engineer).
2. Have the soil evaluated and system design prepared according to SC DHEC standards.
3. Submit a permit application to Richland County Environmental Health (or the designated county authority) with site plan, design, and required fees.
4. Await permit approval; address any reviewer comments if they arise.
5. Schedule inspections as the project progresses and obtain final approval when the system is installed and tested.

Inspections during installation

• Pre-installation/site inspection: confirms site access, setbacks, and overall feasibility.
• Tank installation inspection: verifies tank placement, orientation, and initial backfill is appropriate.
• Drain-field/trench inspection: checks trenching, conduit, gravel, and backfill quality.
• Final inspection: ensures components are functioning, alarms (if any) are in place, and system operates within design parameters.

Tip: Keep the permit card or number handy during each inspection and have all drawings and as-builts accessible for the inspector.

Real estate transfers and inspections

• In many Blythewood real estate deals, a lender or buyer's agent may require a licensed septic inspection in addition to a general home inspection.
• A transfer or "as-built" verification by a licensed septic inspector can help identify lurking issues and prevent closing delays.
• If the system is near failure or lacks recent pumping, address or disclose before closing; lenders may ask for remediation or documentation of upgrades.

Keeping records and staying compliant

• Maintain copies of permits, system designs, inspection reports, and the as-built diagram in a dedicated file.
• Schedule routine pumping every 3–5 years (or per manufacturer/field recommendations) and keep pumping receipts.
• Avoid flushing hazardous chemicals, grease, solvents, or non-dispersible items that can harm the drain field.
• If you remodel or expand the home, recheck setback distances and drainage changes with the county to ensure continued compliance.

Official resources

• SC DHEC On-site Wastewater Program:
• Richland County Environmental Health – On-Site Wastewater / Septic:

Septic Maintenance for Homes in Blythewood

Regular Inspections and Pumping Schedule

• Schedule a licensed septic professional to inspect the tank every 1–3 years. The exact interval depends on tank size, household size, and water usage.
• Plan to pump the tank when the sludge and scum layers reach about one-third of the tank depth, or as recommended by your inspector. In Blythewood's climate, homes with high rainfall or frequent use (garbage disposal, large families) may need more frequent pumping.
• Keep a simple maintenance log: dates of inspections, pumping, and any corrective actions. This helps you spot trends and stay on a steady schedule.

Blythewood Soil and Drainfield Realities

• Blythewood properties often sit on soils with varying drainage. Clay-rich zones can slow effluent movement and raise the risk of surface pooling after heavy rain.
• Drainfields must be sized for the site and the soil's percolation rate. A professional will perform soil tests (percolation tests) to determine the appropriate drainfield design or modifications.
• If your tests show poor drainage or a high water table in your yard, talk with a licensed installer about alternatives (e.g., mound systems or enhanced drainage) before problems develop.

Water Use and Household Practices

• Spread wastewater load across the day: run full loads rather than many small ones, and stagger laundry and dishwasher use.
• Use high-efficiency fixtures and fix leaks promptly to minimize unnecessary inflow and slurry buildup.
• Avoid putting fats, oils, and food scraps down drains; use a trash or compost option for solids. Never flush wipes, diapers, or chemicals—these can clog or kill beneficial bacteria in the system.
• If you have a garbage disposal, consider reducing usage or sizing the system accordingly, as it increases solids entering the tank.

Root Management and Landscaping

• Tree roots are a common Blythewood issue. Plant at a safe distance from any septic components and drainfield, and use root barriers if you're renovating landscaping near the system.
• Keep the drainage area well vegetated with turf rather than heavy foot traffic or construction equipment over the drainfield.
• Consider a professional assessment if nearby trees show signs of invasive roots or if you're planning major landscaping changes.

Storms, Flooding, and Seasonal Challenges in Blythewood

• Blythewood's heavy rains can raise the water table and affect drainfield performance. Ensure surface runoff is directed away from the septic system.
• Do not drive or park over the drainfield, especially after rain or during wet seasons; compaction damages the soil's infiltration capacity.
• If your yard floods, avoid disturbing the drainfield area and consult a septic pro before attempts to "fix" or pump the system.

Signs of Trouble and Immediate Steps

• Slow drains, gurgling sounds, sewage odors, or wet, unusually lush patches over the drainfield are red flags.
• If you notice backups or unusual smells, contact a licensed septic pro right away and limit water use until inspected.
• Do not attempt DIY fixes that involve opening the tank or altering the drainfield; improper handling can create safety hazards and worsen the problem.

Local Regulations and Record Keeping

• Stay compliant with South Carolina's onsite wastewater regulations. Regular inspections, proper pumping, and maintenance records help meet state and local requirements.
• Maintain copies of service reports, pumping invoices, and inspection notes for future reference and potential property transactions.

Official Resources

• SC Department of Health and Environmental Control (DHEC) Onsite Wastewater program:
• U.S. Environmental Protection Agency (EPA) Septic Systems overview: https://www.epa.gov/septic

Cost Expectations for Septic Services in Blythewood

Septic Tank Pumping

A routine pump-out removes sludge and scum that build up in the tank, helping prevent backups and protecting the drain field. In Blythewood, many homes use conventional tanks around 1,000–1,500 gallons, but actual tank size varies by home. Frequency depends on tank size, household water use, and whether you have an effluent filter or pump chamber.

• What's included: truck-mounted pump-out, tank interior cleaning, disposal of waste at an approved facility, inspection of inlet/outlet baffles, and checking risers/lids for access and safety.
• Blythewood specifics: soils in the area can influence how quickly solids accumulate and how accessible the tank is; some homes have limited access points, which can affect time and cost.
• Typical cost in Blythewood: $250–$450.
• How to prepare (quick steps):
  1. Schedule during dry weather if possible.
  2. Clear access to the tank and remove obstructions (grill, toys, plants).
  3. Confirm any local permit or tag requirements with your contractor.

System Inspection and Certification

Inspections assess tank integrity, drain-field condition, and overall system performance. In Blythewood, inspections are common for home purchases, refinancing, or routine maintenance. A certificate is often requested by lenders and can help identify issues before they worsen.

• What's included: visual inspection of tank and lids, baffle condition, effluent screen (if present), dye testing or flow testing, inspection of drain-field trenches, and a written report.
• Blythewood specifics: property layouts and nearby trees can complicate drainage patterns; inspectors may note root intrusion or soil saturation that's more prevalent after heavy rains.
• Typical cost in Blythewood: $100–$350.
• How to prepare (quick steps):
  1. Provide historical maintenance records if available.
  2. Ensure access to the tank and drain-field area is clear.
  3. Ask about any required SC state or local permits for the inspection.

Drain Field Repair and Replacement

Drain-field issues are a common Blythewood concern due to local soil conditions and tree roots. Repairs can extend the life of an existing system, while replacement may be needed for severely compromised fields.

• What's included: locate and evaluate the drain field, diagnose leaks or saturation, root removal if present, trench repair or replacement, gravel and pipework renewal, and permit coordination.
• Blythewood specifics: clay pockets, variable moisture, and root networks from nearby trees can drive repair complexity and cost; mound or at-grade alternatives may be needed if the original design isn't functioning well.
• Typical cost in Blythewood: Repair $2,000–$6,000; Replacement $6,000–$15,000 (mound or alternative systems may push higher).
• How to prepare (quick steps):
  1. Schedule a diagnostic test to confirm the extent of the problem.
  2. Budget for potential permit fees and soil amendments.
  3. Consider long-term plans if the site requires a more extensive system.

Septic Tank Repairs and Component Replacements

Smaller fixes can prevent larger failures. Common components include baffles, lids, risers, inlet/outlet piping, or pump components in the tank chamber.

• What's included: assessment of tank integrity, replacement or repair of faulty baffles, lid or riser installation, pump or float switch repair/replacement, and testing after repair.
• Blythewood specifics: older homes or those with vigorous root systems may need more frequent component maintenance.
• Typical cost in Blythewood: Small parts and labor $300–$1,500; full pump replacement $1,000–$2,500.
• How to prepare (quick steps):
  1. Schedule after a backup or odor issue for prompt diagnosis.
  2. Keep irrigation shut off during testing if your system uses irrigation integration.
  3. Request spell-out of warranty orservice guarantees.

Soil Evaluation and Perc Testing

Required for new installations or substantial system changes. Blythewood's varied soils mean proper testing is essential for code-compliant designs.

• What's included: soil boring, percolation (perc) testing, drainage analysis, and design recommendations for the appropriate system type.
• Blythewood specifics: some neighborhoods with shallow bedrock or high water tables may necessitate alternative designs (mound or at-grade systems).
• Typical cost in Blythewood: $800–$2,000.
• How to prepare (quick steps):
  1. Obtain the property's existing site plan if available.
  2. Schedule with a qualified installer who can coordinate with the local health department.
  3. Budget for design and permitting as part of the project.

New System Installation or System Replacement

When the existing system can't be repaired, a full install or replacement may be necessary. Blythewood properties often require design considerations for soil and drainage.

• What's included: site evaluation, design plans, permitting, tank installation, distribution/drain-field setup (or mound/alternative system), and final testing.
• Blythewood specifics: higher likelihood of mound or alternative systems in areas with water-table constraints or poor soil drainage; permits and engineering design are common.
• Typical cost in Blythewood: $7,000–$20,000+ depending on system type and site conditions.
• How to prepare (quick steps):
  1. Engage a licensed septic designer early to align with local requirements.
  2. Plan for permits and potential electrician or trenching needs.
  3. Allocate time for system curing and final inspections.

Preventive Maintenance Plans

Regular maintenance helps avoid surprise failures and can lower long-term costs.

• What's included: periodic pumping, system inspections, filter checks, and discounts on repairs.
• Typical cost in Blythewood: $200–$600 per year, depending on service frequency and included items.
• How to prepare (quick steps):
  1. Decide on a maintenance cadence based on family size and water use.
  2. Confirm what services are covered under the plan.
  3. Keep a simple maintenance log for future inspections.

Emergency Septic Service

Backup calls happen; prompt response minimizes damage.

• What's included: 24/7 availability, diagnostic assessment, pumping or repair as needed.
• Typical cost in Blythewood: trip charge $75–$150, plus hourly rates $100–$250, plus parts.
• How to prepare (quick steps):
  1. Keep a short list of preferred providers for after-hours service.
  2. Have access to the tank location and a backup power source if needed.
  3. Note any neighbors with similar issues (helps identify widespread problems).

Official resources:

• South Carolina Department of Health and Environmental Control (SCDHEC) – Septic Systems:
• U.S. Environmental Protection Agency – Onsite Wastewater Systems: