Septic Designs by Randy G. Wilkerson

Septic Company in Fircrest, Washington

(253) 380-4868, Fircrest, WA 98466View on Yelp

About Septic Designs by Randy G. Wilkerson

Septic Designs by Randy G. Wilkerson operates out of Fircrest, Washington, a small residential city surrounded by the larger Tacoma metro area in Pierce County. The business name signals a focused specialty, design work for septic systems, which is a distinct and technical niche within the broader septic industry. New system designs are required for new construction, lot subdivisions, failing system replacements, and certain major repairs. For property owners, developers, or builders in the Tacoma area who need a licensed designer rather than just a pump truck, this is the type of provider to call.

Services

Septic Services

Services & Process

Septic system design involves conducting a site evaluation, soil testing, and preparing a permitted system plan that meets Washington State and Pierce County Health Department requirements. Randy Wilkerson likely performs percolation tests and soil logs to determine the appropriate system type for a given property. Design services are critical for new construction on un-sewered lots, replacement of failed conventional systems, and alternative system installations like mound or drip systems. This work sits upstream of installation, meaning you'll need a designer before a contractor can break ground on a new or replacement system.

Service Area

Septic Designs by Randy G. Wilkerson is based in Fircrest and serves properties throughout the Pierce County area. The Tacoma metro region, including surrounding unincorporated areas and smaller cities, makes up the primary service zone. If you have a property in Pierce County that needs a system design for new construction or a replacement permit, this provider is locally positioned to handle the site work and county coordination.

Frequently Asked Questions

When do I need a septic system design rather than just a contractor?
You need a formal system design any time you're installing a new septic system, replacing a failed system, or making significant alterations that require a permit. In Washington State, the design must be completed by a licensed On-Site System Designer or licensed engineer before permits can be issued.
How long does septic system design and permitting take in Pierce County?
The timeline varies, but from initial site evaluation to permit approval typically takes four to ten weeks depending on the complexity of the site and the county's current workload. Building that timeline into your construction or real estate schedule is strongly recommended.
What is a soil percolation test and why does it matter?
A perc test measures how quickly water drains through the soil, which determines what type of system can be installed and how large the drain field needs to be. Poor perc results don't necessarily mean you can't have a septic system, but they may require a more advanced design like a mound or drip irrigation system.
Can a septic designer help with a system on a small or oddly shaped lot?
Yes, constrained lots are actually where a skilled designer adds the most value. They'll work through setback requirements from property lines, structures, and water sources to find a compliant layout that works within your lot's limitations.
What types of alternative septic systems might be designed for a Pierce County property?
Depending on soil conditions and lot constraints, a designer might specify a mound system, a drip irrigation system, or a recirculating sand filter. These systems are more complex and costly than conventional gravity systems but are often necessary on sites with challenging soils or limited space.
Do I need a new septic design if I'm expanding my home or adding a bedroom?
Adding living space that increases the number of bedrooms typically requires verifying that your existing system has adequate capacity for the higher wastewater load. If it doesn't, you may need a designer to plan an upgrade or expansion of the current system.

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