New and Restoration of Septic and Sewer Systems

From new septic system installation to restoring your current system - we can help

Whether you are building a new home or replacing an old septic system, our team can help. We handle site evaluation, permitting support, excavation, tank and drain field installation, repairs, pumping coordination, and full system restorations.

We focus on clear communication, quality workmanship, and solutions that fit your property and budget. We offer free inspections and free estimates, so there are no surprises with your septic system costs.

Whether you need a new septic system installed or have sewer issues with your current system, our licensed team is here. For over 50 years, Northwest Cascade has served the Puget Sound region.

Homeowners trust us for septic and sewer system solutions.

Your Trusted Local Septic System Specialists

For homeowners, a septic system is among the most essential components of their home’s infrastructure. Problems such as pooling water, sewage backups, unpleasant smells, or sluggish drains can rapidly interrupt your routine. That’s exactly when Northwest Cascade steps in to help.

With decades of experience and strong roots in the Puget Sound community, we get the job done well. We work efficiently and safely. We also follow all local rules and regulations. We’ll also explore creative, practical options to keep your septic system expenses comfortably within your budget.

Full-Service Solutions Customized to Your Requirements

We handle all septic and sewer system needs, giving homeowners one place for new installs and repairs.

New Septic System Installation

Starting construction on a new house?

We offer:

  • End-to-end installation services, from trench excavation and tank placement to installing the sewer piping.
  • Know-how for working with varying soil types, groundwater depth, and local permit and code requirements.
  • No-cost estimates for total septic system pricing and installation costs.

Septic System Restoration

Having trouble with a failing or unreliable septic system? 

Our repair and rehab options include:

  • Removal/decommission of old tank/system
  • Installation of new/updated tank
  • Drain field repair or replacement
  • Installing aeration units to improve performance and treatment effectiveness.

Whether it’s cracked pipes or backup issues, our team offers complete sewer line solutions:

  • Inspection and assessment of sewer lines.
  • Repairing or replacing damaged sewer pipes.
  • Restoring wastewater flow and eliminating recurring issues.

How to Spot Septic and Sewer Problems

Here are some common signs your system may need attention:

  • Standing Water or Puddles: Visible water around your septic tank or drain field could indicate a serious problem.
  • Foul Odors: Persistent smells near your septic system or drains may mean trouble.
  • Backups or Slow Drains: Sewage backing up into your home or slow-draining plumbing could point to a system failure.
  • Frequent Pumping: If you’re constantly scheduling septic tank pumping, it might be time for a repair or replacement.

If you notice any of these signs, don’t wait—call us today for a professional assessment.

Why Choose Northwest Cascade Construction?

At Northwest Cascade, we combine cutting-edge technology with unmatched local expertise to provide homeowners with the best solutions for their septic and sewer systems. Here’s what sets us apart:

  • Over 50 Years of Experience: Serving the Puget Sound region since 1967.
  • Licensed Professionals: Our team is fully licensed, insured, and certified to handle any septic or sewer project.
  • Local Knowledge: We understand the unique soil conditions, groundwater levels, and regulations of the Pacific Northwest.
  • Commitment to Quality: From start to finish, we ensure every project meets our high standards for safety, efficiency, and customer satisfaction.

Put Your Home in the Hands of Professionals

If you’re planning a new septic installation, repairing a deteriorating sewer line, or simply looking for guidance, Northwest Cascade is ready to assist. We know no two homes are the same, so we’ll partner with you to identify the right option that fits your goals, your property, and your budget.

Frequently Asked Questions.

How do I know if I need a new septic system or a repair?

Watch for warning signs.

• Slow drains or backups
• Standing water over the drain field
• Strong odors near the tank or yard
• Lush, green patches over the drain field

We inspect your system and give you a clear recommendation. Repair if it makes sense. Replace if needed.

Most systems last 20 to 30 years.

Drain fields often fail first due to soil saturation or poor maintenance.
Regular pumping and proper use extend system life.

Yes.

Each county has strict requirements. King, Pierce, Lewis, Thurston, and Mason counties all require permits and inspections.
We handle the permit process and work directly with the local health department.

Costs vary based on site conditions.

• Soil type
• System design
• Property size and layout
• Access for equipment

Most residential systems range widely. We provide a free estimate with a defined scope so you know what to expect.

Most projects take one to two weeks once permits are approved.

Timeline depends on design approval, weather, and site complexity.
We set a clear schedule and keep your project moving.

Some drain fields can be restored.

Options depend on failure cause.
We evaluate:

• Soil condition
• Level of saturation
• Age of the system

If repair is viable, we recommend it. If not, we design a replacement that meets current code.

Common causes are preventable.

• Lack of regular pumping
• Excess water usage
• Improper items flushed into the system
• Poor original installation
• Tree root intrusion

We identify the root cause so you do not repeat the problem.

No.

Driving or building over a drain field compacts soil and damages pipes.
We help you plan your site to protect the system long term.

It depends on your property.

Options include:

• Conventional gravity systems
• Pressure distribution systems
• Sand filter systems
• Alternative or engineered systems

We review your soil, lot size, and county requirements to select the right system.

You need experience and local knowledge.

• 50 years serving Western Washington
• Deep experience with septic systems and drain fields
• Strong relationships with county health departments
• Full service from inspection to installation
• Clear pricing and free estimates

We help you make the right decision and get the job done right.

Call Us Today!

Don’t allow septic or sewer problems to interrupt life at home. Contact Northwest Cascade at 
1-800-562-4442 or complete our online contact form to book a consultation.

Let our 50+ years of proven expertise go to work on your behalf. Working together, we’ll keep your septic and sewer systems operating reliably and smoothly for many years ahead. With locations across the Pacific Northwest, our team can respond quickly and provide dependable service you can trust. From routine inspections and pumping to full system design and installation, we handle every job.

We also provide emergency repairs. We work safely and efficiently. We keep clear communication at every step.

Contact us
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