We Go Underground
So You Don't Have To
Expert septic installation, repair & maintenance along Washington's I-5 corridor.
“We explain what we find. No surprises, no upsells.”
Get a Free Quote
We respond within 2 hours
Full-Service Septic Solutions
From installation to emergency repairs, we handle everything beneath your property with expertise and transparency.
Septic Installation
New construction and replacement systems designed for your property's unique soil and usage needs.
- New Construction
- System Replacement
- Permit Handling
- Custom Engineering
Repairs & Emergency
When your system fails at 2am, we answer. Fast diagnosis and repairs that fix the real problem.
- 24/7 Response
- Fast Diagnosis
- Honest Pricing
- Real Solutions
Diagnostics & Inspections
Camera inspections reveal what's really happening. We show you the footage and explain what we find.
- Camera Inspection
- System Evaluation
- Real-Time Video
- Clear Reports
Pumping & Maintenance
Regular maintenance prevents costly emergencies. Keep your system running for decades.
- Tank Pumping
- Line Jetting
- Drain Field Service
- Preventive Care
Digging Down to the Solution
Watch as we go deeper — from your first call to the completed job. Transparency at every level.
Call & Consult
Tell us what's happening. We'll ask the right questions to understand your situation and schedule a visit that works for you.
Inspect & Diagnose
We arrive, assess, and use camera inspection to see exactly what's happening underground. No guessing — we show you.
Explain & Quote
We show you what we found and explain your options in plain English. You'll understand exactly what needs to happen and why.
Execute & Verify
We do the work right, clean up thoroughly, and verify everything is functioning. Your system is restored.
David Gorshenin
“I started I-5 Septic because I was tired of seeing homeowners get confused, overcharged, or scared into work they didn't need.”
After 15+ years in the industry, I've seen it all — the good contractors and the bad ones. The ones who explain and the ones who exploit. I built this company on a simple promise: we explain what we find.
When I show up to your property, I'm not looking for the biggest sale. I'm looking for the real problem and the right solution. Sometimes that's a $200 repair instead of a $10,000 replacement.
I live in Winlock, work the I-5 corridor, and answer my phone — even at 2am.
The I-5 Corridor
100+ miles of coverage from Olympia to Vancouver
Olympia, Tumwater, Lacey
Centralia, Chehalis
Longview, Kelso, Woodland
Vancouver, Battle Ground, Camas
Olympia, Tumwater, Lacey
Centralia, Chehalis
Longview, Kelso, Woodland
Vancouver, Battle Ground, Camas
Not sure if we service your area?
Call Us: (360) 324-5076What Our Customers Say
Real stories from real homeowners along the I-5 corridor.
“Septic backed up on Thanksgiving. David answered at 6pm, was at our house by 7:30, and had it fixed before the family arrived. He explained exactly what caused it and how to prevent it. Lifesaver.”
“Other companies wanted to replace our whole system. I-5 Septic actually did a camera inspection, found the real problem, and saved us $8,000. They showed us the video — first time anyone actually explained what was going on.”
“We bought a house with an old septic system and had no idea what we were dealing with. David walked us through everything — the tank, the drain field, what to watch for. Now I actually understand what's under my property.”
“24/7 means 24/7. Called at 2am, got a human, had someone here by morning. That's rare. And no price gouging for the emergency call.”
We Answer 24/7
Sewage backup? Alarm going off? Strange smell? Don't wait until morning. Call now — a real person will answer.
(360) 324-5076