Davis Septic Design

Selecting the right septic system for your property is crucial, as it ensures long-term performance, low maintenance costs, and compliance with county regulations. In King and Snohomish Counties, where soil conditions, property sizes, and local regulations vary widely, understanding the different options available can help you make an informed decision. Here’s a comprehensive guide to help you choose the best septic system for your needs.

Factors to Consider When Choosing a Septic System

1. Soil Composition and Site Evaluation
   • The soil on your property plays a critical role in septic system selection. Proper drainage and filtration are essential for the system’s effectiveness. Before any design, a soil log test and site evaluation are necessary to determine the soil type, depth, and water table level. We provide soil log testing and feasibility studies as part of our services to ensure the chosen system is suitable for your site’s specific conditions.
2. Property Size and Layout
   • The size and layout of your property will influence the type of septic system you need. For properties with ample space and good soil conditions, a conventional gravity system might be the best choice. However, properties with limited space, steep slopes, or poor soil conditions may require an alternative system, such as an OSCAR system or a sand-lined drip irrigation system.
3. Water Usage
   • Your household’s water usage impacts the size and type of septic system you need. Homes with larger families or high water usage may require advanced treatment systems that can handle increased wastewater volumes, such as the NUWater BNR600 system. These systems are designed to provide effective wastewater treatment even under high usage conditions.
4. Regulations and Permitting
   • Both King and Snohomish Counties have specific regulations regarding septic system installation, including permitting, setback requirements, and environmental protections. It’s crucial to work with a professional design company that is familiar with local regulations. Our team has over 30 years of experience navigating the permitting process and ensuring compliance with county health department standards.

Types of Septic Systems We Design

1. Conventional Septic Systems
   • These systems are ideal for properties with suitable soil conditions and adequate space. They use gravity to move wastewater through the tank and into a drain field for natural filtration. We offer a variety of conventional systems, including:
     • Gravity Distribution
     • Pump to Gravity
     • Low Pressure Distribution

Learn more about how we install and inspect these systems, including recent projects in areas like Lynnwood.

2. Alternative Septic Systems
   • When soil conditions or space limitations prevent the use of conventional systems, alternative systems become necessary. These systems provide advanced treatment and can be customized to suit challenging sites:
     • OSCAR Systems: Ideal for properties with space constraints or poor soil conditions. They use subsurface drip irrigation to distribute treated wastewater. Check out our recent OSCAR system installations in Snohomish County to see how this solution can work for your property.
     • Sand-Lined Drip Irrigation: Provides efficient wastewater treatment and is suitable for areas with high water tables or inadequate soil filtration. Learn more in our blog post on sand-lined drip irrigation.
     • NUWater ATU (BNR600): This advanced treatment unit provides superior wastewater treatment for properties with high usage or sensitive environments. See our installation of the NUWater BNR600 on Vashon Island.

How We Help You Choose the Right System

Choosing the right septic system is a detailed process that requires expert evaluation. Our team begins with a site visit to conduct a feasibility study, including soil testing, site layout assessment, and water usage evaluation. We then recommend the most cost-effective system tailored to your property’s unique needs. With a focus on long-term performance and low maintenance costs, our designs are built to comply with the strict regulations of King and Snohomish Counties.

Our fast turnaround times—typically one week for a site visit and one week to prepare and submit the design to the County Health Department—ensure you receive timely and professional service. Read more about our recent projects and services on our blog.

If you’re ready to discuss your septic system design options, contact us today. For emergency repairs, text 911 to 425-248-1140, and we’ll respond within 24 hours.

By choosing the right septic system for your property, you ensure reliable wastewater treatment, protect the environment, and comply with county regulations. Explore our extensive range of services, including septic repair, new construction, and feasibility studies, to find the solution that best fits your needs.

When it comes to septic system design requirements in King and Snohomish Counties, local regulations, permits, and environmental factors play a significant role. Navigating these requirements is crucial, whether you’re repairing a failed system, constructing a new property, or selling your home. Here, we break down the key considerations for septic system design in these counties.

Local Regulations and Permits

Both King and Snohomish Counties have strict guidelines for on-site septic system (OSS) installations to protect public health and the environment. Understanding these guidelines is the first step in ensuring a successful septic system design. Here are some essential factors:

1. Health Department Permits: In both counties, permits are issued by the local health departments. The process involves soil testing, site evaluations, and detailed design plans to meet county-specific standards. Learn more about soil log testing on our Feasibility & Soil Log Testing blog post.
2. Site and Soil Feasibility: Proper soil and site evaluation are critical. Factors like soil type, depth, and drainage capacity determine the type of septic system that can be installed. We offer soil log testing services as part of our feasibility studies in areas like Woodinville; you can read more in our Woodinville Feasibility & Soil Log blog.
3. Critical Area Designation (CAD): If your property falls within a critical area (wetlands, steep slopes, etc.), obtaining a CAD is a crucial step before designing the septic system. Understanding these requirements helps ensure compliance with environmental protections.
4. System Type Selection: Depending on the soil composition and property layout, the county may require specific system types. For example, some areas with poor soil conditions might require advanced systems like OSCAR systems or sand-lined drip irrigation systems. Discover more about OSCAR system installations and sand-lined drip irrigation on our blog.
5. Septic Repairs: If your current system has failed, repair designs must adhere to county standards. Our company specializes in timely and cost-effective repairs. Check out our article on what to do when facing a failed septic system for more information.

Factors Affecting Septic System Design

1. Property Size and Layout: In King and Snohomish Counties, property size can limit the types of systems that can be installed. Properties with limited space may require alternative systems, such as the NUWater BNR600 system.
2. Local Climate: The wet climate in these counties can affect soil conditions, requiring careful assessment during the design process. Our team considers these factors when creating custom solutions tailored to the region’s unique needs.
3. Turnaround Time: We pride ourselves on our fast turnaround times—typically, a week for the site visit and another week to prepare and submit the design to the County Health Department. Read more about our recent projects, like the OSCAR XO2 system installation in Ravensdale.

Our Services in King and Snohomish Counties

For over 30 years, we’ve been providing a variety of septic design, repair, and feasibility services in King County and Snohomish County. From feasibility studies to designing advanced systems like OSCAR systems and NUWater systems, our team ensures compliance with local regulations while offering cost-effective solutions.

If you’re in need of septic system design or repairs, don’t hesitate to reach out. For emergency repairs, text 911 to 425-248-1140, and we’ll get back to you within 24 hours.

This was a design that we did for our client on Vashon Island. Nu Water BNR 600 TU

Ramsey performing a final inspection on a system that was installed from Brad’s design. This test is performed by the sanitarian, the installer and the designer. They make sure that the system has been installed correctly based off the design as well as ensure that it functions properly.

This is a new Oscar install from the design that Brad did for one of our client’s. After performing his site visit, digging soil log holes and determining soil type, he designed the Oscar system based on the client’s needs.