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Understanding the Different Types of Septic Systems in North Carolina

Septic System Types

Navigating the process of having a septic system designed for your property can feel overwhelming, especially when it comes to understanding what your permit entails. The type of system installed and its design is determined by either your Local Environmental Health Department, an Authorized On-Site Wastewater Evaluator (AOWE), or an engineer based on your soil conditions, space availability, and local regulations. At Creech’s Plumbing, we specialize in installing, maintaining and servicing all types of septic systems, ensuring homeowners understand how their system works and how to keep it in top condition. Let’s explore the four main types of septic systems that may be designed for your property.

1. Conventional Septic System

A conventional septic system is the most traditional option, typically installed when the soil and site conditions allow for simple wastewater dispersal. This system includes a septic tank that separates solids from wastewater and a gravity-fed drainfield that disperses the treated water into the soil. Because of its simple design, it requires minimal maintenance in comparison to the other types and works well in areas with adequate soil conditions. However, it does require sufficient land space, and it may not be suitable for properties with poor drainage or high water tables.

2. Modified Conventional Septic System – Adapted for Site Needs

A modified conventional system is similar to a traditional system but includes adjustments to improve performance in areas with moderate soil limitations. These modifications may involve pressure distribution, shallow drainfields, or alternative drainfield materials, making it a good choice for properties with some soil restrictions.

3. Alternative Septic System – Designed for Challenging Soil Conditions

An alternative septic system is used when conventional systems are not suitable due to poor soil, high water tables, or limited space. These systems include additional treatment methods such as Aerobic Treatment Units (ATUs), Mound Systems, and Drip Dispersal Systems. By introducing oxygen into the treatment process, ATUs break down waste more efficiently, while mound systems raise the drainfield above the natural soil to improve drainage. Drip dispersal systems allow for slow wastewater distribution, which is ideal for sites with limited space. While these systems provide solutions for difficult soil conditions and improve wastewater treatment before dispersal, they require more frequent maintenance and may increase operational complexity.

4. Innovative Septic System – Advanced Technology for Special Cases

An innovative septic system incorporates advanced wastewater treatment technologies to improve efficiency and environmental impact. These systems often require specialized engineering and may include Recirculating Sand Filters, Textile Filters. Recirculating sand filters provide additional filtration for cleaner effluent, while textile filters use synthetic materials to enhance wastewater purification. While these systems offer advanced treatment and are ideal for environmentally sensitive areas or properties with space constraints, they require professional maintenance and ongoing monitoring to ensure effectiveness.

If you need a septic system installed, maintenance, repairs, or would like an inspection, Creech’s Plumbing is here to help. Our experienced team ensures your system remains in top working condition. 📞 Call us today to schedule a service. Let us help you keep your septic system functioning properly for years to come.