Septic System Installation
New construction or system replacement — we handle it from start to finish.
Full-Service Septic Installation
Whether you're building a new home, replacing a failed system, or adding capacity to an existing property, North Valley Septic Service handles the entire installation process. With hands-on construction experience and knowledge of Snohomish County regulations, we get your system designed, permitted, and installed efficiently.
Every property is different — soil conditions, lot size, water table, and local regulations all affect system design. We work with you and the county to find the right solution for your specific situation.
When You Need a New System
New Construction
Building a new home on rural property? You'll need a septic system designed and installed before occupancy. We coordinate with your builder.
Failed System Replacement
If your current system has failed beyond repair, a full replacement is often more cost-effective than repeated fixes.
System Upgrades
Adding bedrooms or converting a property? Your system may need to be upsized to handle increased capacity.
Property Subdivision
Splitting a lot? Each parcel typically needs its own septic system designed and approved by the county.
Installation Process
Site Evaluation
We assess your property's soil conditions, slope, water table, and available space. This determines what type of system will work best.
Design & Permitting
We design a system that meets Snohomish County Health District requirements and submit for permits. We handle the paperwork and coordinate inspections.
Excavation & Installation
We excavate, set the tank, install distribution lines, and build the drain field. Our construction background means clean, efficient earthwork.
Inspection & Backfill
County inspector verifies the install meets code. Once approved, we backfill, grade the site, and restore your property.
Final Walkthrough
We walk you through your new system — where everything is, how it works, and when you'll need your first pump-out.
Permits & Regulations
All septic installations in Snohomish County require permits from the Snohomish Health District. The process typically involves:
- •Site evaluation and soil testing (perc test)
- •System design submittal and review
- •Installation permit issuance
- •Construction inspections (typically 2-3)
- •Final approval and certificate
We coordinate all of this for you. You don't need to become a septic expert — that's our job.
Need a New Septic System?
Let's talk about your project. Free consultations — we'll help you understand what's needed and what it'll cost.