Expert septic system design and permitting for residential and commercial projects in Southwest Washington since 2004
Based on 23 reviews
Exceptional service from start to finish. Mike and Keith were professional, knowledgeable, and made the entire permitting process smooth and stress-free.
Very impressed with the thoroughness of the site evaluation and the clear explanations throughout the process. Highly recommend!
EGSD is dedicated to providing quality, individualized service to all of our customers. Whether you need a septic design for your dream house, have a large commercial project where public sewer is not available, require multiple perc approvals for a rural subdivision, have a failed septic system needing re-designed or a feasibility study on a property prior to purchase, we can help!
Over the past few years, many of our customers in Clark County WA have also been needing soils testing for stormwater design and geohazard/slope assessment reports for steeper slopes on their property. Oftentimes this work is required when a septic or building permit application is submitted. Listening to the needs of our clients, we have been expanding our scope of services to include some of this work. Oftentimes we're able to complete multiple parts of your project consulting, design and soils testing needs, saving you from dealing with multiple consultants. This can save you time and money! Once we have a good feel for your project, we'll let you know what portions we can help with. If a different consultant would be a better fit, we'll also refer you to a proven industry partner who will take good care of you.
Our work can be divided into three main categories. Click to learn more about these specific areas:
Our residential septic design process
We gather project details via phone or email. For new construction, please provide a copy of your building plans.
We review county maps and historical records that may affect permitting. Site visits typically scheduled within one week.
We prefer you on-site to walk the property together. We bring a mini-excavator to dig test holes for soil testing and stake proposed locations if needed.
We prepare design calculations and drawings (typically within one week for residential projects) and submit to the county permit portal.
We complete pre-backfill inspection of the installed system and as-built drawing preparation if required by your county.
Our primary service area is Clark County and Skamania County WA (Battle Ground, Ridgefield, La Center, Woodland, Amboy, Yacolt, Camas, Washougal, North Bonneville, Stevenson, Cougar). For larger projects, we will travel across the state, but smaller/residential projects are more economical to hire someone local.
If you have any questions, feel free to contact us!
Ready to have a conversation? Send us a message and we'll get back to you soon.
Very knowledgeable engineers. I saved a ton of money and got a better system than what was previously recommended. Courteous folks to work with from the first phone call until completion. True professionals. Very highly recommended.
WOSSA and NOWRA are professional organizations representing septic engineers, installers, operations and maintenance providers, users and regulators striving to promote safe, reliable and cost effective ways of treating on-site wastewater.
