About Us
Built for King County, WA Homeowners, Realtors, and Builders Who Expect More
Lilly’s Septic Service was built to solve a problem we saw over and over again in King County:
critical septic work being handled with shortcuts, poor communication, and zero accountability.
Septic systems aren’t optional. They protect your home, your health, your property value, and the environment. When something goes wrong—or when a home sale depends on it—you don’t need guesswork or excuses. You need clear answers, clean work, and a company that stands behind what they install.
That’s why Lilly’s exists.
A Different Kind of Septic Company
We’re not a “pump-and-go” outfit, and we’re not a volume-first operation.
We’re a full-service septic company built around process, documentation, and quality control.
That means:
Every job follows a defined scope
Every system is installed to spec
Every repair is documented
Every inspection is treated like it matters—because it does
Whether we’re pumping a tank, inspecting a system for a home sale, repairing a failing drainfield, or installing a brand-new system, our goal is the same:
Do it right the first time, with no surprises.
Local to King County. Built for King County.
King County septic work is complex. Regulations are strict. Site conditions vary. Inspections are detailed. There’s no room for “that’s how we’ve always done it.”
Our team works exclusively in King County, and we design our workflows around:
Local health department requirements
Time-of-sale inspection standards
High groundwater and challenging soils
Tight urban and suburban lots
Long-term system performance—not just passing inspection
We don’t just install systems.
We install systems that hold up years later.
Who We Serve
Homeowners
From routine pumping to urgent repairs to full system replacements, we give homeowners clear options, honest pricing, and work they can trust.
Realtors & Sellers
We understand how stressful septic issues can be during a sale. Our inspection, pumping, and repair process is built to reduce delays, eliminate confusion, and protect the transaction.
Builders & Developers
We work alongside builders who value clean installs, reliable timelines, and professional documentation. Our systems are built to integrate smoothly with the rest of the project—not slow it down.
Our Philosophy: Systems Over Shortcuts
Anyone can dig a hole.
What separates a professional septic company is what happens before and after the hole is dug.
At Lilly’s, every job includes:
Pre-work planning
On-site verification
Photo documentation
Clear communication
Post-work review
This approach protects:
The homeowner
The buyer
The builder
And the integrity of the system itself
It’s also why so much of our work comes from referrals and repeat clients.
Why the Name
Lilly’s is named after family, and that matters to us.
This company was built with the mindset that every system we touch should be something we’d feel comfortable putting our own name on—and our own family over.
That standard doesn’t change based on job size, timeline, or pressure.
Our Commitment
When you hire Lilly’s Septic Service, you can expect:
Straight answers
Clean, professional work
Respect for your property
Compliance with King County requirements
A team that takes responsibility for the outcome
We don’t disappear after the job is done.
We don’t cut corners to save time.
And we don’t leave you guessing.
Proudly Serving King County, Washington
If you’re looking for a septic company that treats your system like a long-term investment—not a quick transaction—you’re in the right place.
Lilly’s Septic Service
King County, WA