Davis Septic Design

We are a Washington State licensed septic design company and pride ourselves on providing timely and cost effective services for over 25 years to individuals living in King County and Snohomish County.

Services We Provide:

King County / Snohomish County Septic Design – We can help!

**Septic Repair Design**
**New construction Septic Design**
**Septic Feasibility / Perk Test**

Have a failed septic system? Are you selling your home and did not pass the septic evaluation?

It typically will take a week for the site visit, a week to prepare the design and submit to King County Health Department for their review.

Specializing In

Here are a few of the septic systems we specialize in designing and provide construction management to the installers to better serve you:

Conventional Septic System:

• Gravity Distribution
• Pump to Gravity
• Low Pressure Distribution

Alternative Septic System:

These are septic systems that are required by local Health Departments due to lack of area and/or soils.

• Netafim sub-surface drip irrigation
• Geo-Flow sub-surface drip irrigation
• Sand-Filter System and Sand-Filter rebuilds
• Mound System and Mound System rebuilds
• Advantex Treatment Systems
• Glendon Bio-Filter Systems
• Nibbler Systems
• Whitewater ATU (UV required)
• Fast Treatment Systems (UV required)
*UV= Ultraviolet light 

If your property is required to have an alternative system, we design the most cost effective system for long term performance and low cost maintenance.

We proudly serve (Repairs, New Construction and Feasibilities) in the following location:

Bothell, Shoreline, Lake Forest Park, Kenmore, Woodinville, Duvall, Kirkland, Redmond, Carnation, Seattle, Bellevue, Sammamish, Mercer Island, Issaquah, Newcastle, Snoqualmie, North Bend, Renton, Burien, Tukwila, SeaTac, Normandy Park, Vashon Island, Everett, Marysville, Snohomish, Monroe, Gold Bar.

We look forward to serving you!


Contact Us

*Please provide parcel#, address, email address, phone number and the type of immediate service you are needing in King or Snohomish County.

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