Clatsop County, Oregon

Your complete septic partner on the North Coast.

Installation, repair, and replacement — handled start to finish by one local, licensed team that knows coastal conditions and Clatsop County inside and out.

Licensed & Insured

CBB #173131

No Mileage Fees

All Permitting Handled

120+

Systems installed & replaced on the North Coast

20+

Years of North Coast excavation & septic expertise

9

Cities and communities served across Clatsop County

What we do

Three services. One local team. Done right.

Whether you’re building from the ground up, dealing with a failing system, or replacing something that’s reached the end of its life — we handle every phase, every permit, and every inspection. No hand-offs, no surprises.

New construction

Septic System Installation

Coastal builds require expertise in sandy soils, high water tables, and Clatsop County DEQ requirements. We design and install systems built for North Coast conditions — site evaluation, design, permits, excavation, installation, and final sign-off all in one.

When things go wrong

Septic System Repair

Slow drains, sewage odors, wet spots, or a system alarm — we respond fast, assess honestly, and present your options clearly. Failed pumps, cracked distribution boxes, clogged baffles, root intrusion — we diagnose and fix it right.

Aging or failed systems

Septic System Replacement

Most systems last 20–30 years. When repair isn’t cost-effective, we manage the full replacement — assessment, permitting, removal, new system installation, and all required inspections. Honest guidance on repair vs. replace, always.

Coming Soon

Annual O&M Inspections & DEQ Compliance — coming Summer 2026.

Oregon law requires annual inspections for many Clatsop County systems.

Why all county septic

We know this coast. We know your system.

All County Septic is a Keith Keranen Excavating company — your neighbors on the North Coast for decades. We know Clatsop County’s soils, regulations, and inspectors firsthand.

Coastal soil expertise

Sandy soils and high water tables require system designs that don’t exist in textbooks written for inland properties.

Permits handled, start to finish

Site evaluation, DEQ submission, county coordination, final sign-off. We manage all of it.

One company, every phase

Design, install, repair, replace. One relationship, one call, for the life of your system.

Transparent pricing, always

Free estimates. Options presented before work begins. No surprise line items ever.

Don't wait

Signs Your System Needs Attention

Septic problems rarely resolve on their own — and the longer you wait, the more expensive the fix.

Where we work

All of Clatsop County, No Mileage Fees

From the beaches of Cannon Beach to rural east county — if you’re in Clatsop County, we come to you.

Gearhart

Cannon Beach

Seaside

Astoria

Warrenton

Hammond

Arch Cape

Manzanita

Unincorporated

Gearhart homeowner?

Unlike Astoria or Seaside, the City of Gearhart has no municipal sewer system. Every home depends entirely on its own onsite septic system. We specialize in Gearhart installations, repairs, and replacements.

What our neighbors say

Trusted by Clatsop County Property Owners

“These guys replaced our septic tank. They were great — hard working and got the job done perfectly. If you want a job done right with little to no hassle, these are your guys.”

— Cassandra M., Oregon

We ask every completed job customer for a Google review.

More coming soon.

Common questions

Trusted by Clatsop County Property Owners

How much does a new septic system installation cost?

Septic installation costs vary significantly depending on your property’s soil conditions, the system type required, lot size, and access. On the North Oregon Coast, most residential installations fall somewhere between $15,000 and $35,000 — with conventional gravity systems at the lower end and mound, pressure distribution, or advanced treatment systems at the higher end. We provide free, written estimates after a site visit, so you’ll know exactly what you’re looking at before any commitment is made. There are no surprise line items.

How do I know if I need a repair or a full replacement?

The honest answer is: it depends on your system’s age, the nature of the failure, and what a proper assessment reveals. As a general rule, if your system is under 15 years old and the problem is isolated — a failed pump, a cracked distribution box, root intrusion in a lateral — repair is usually the right call. If the system is 20–25+ years old, has had recurring problems, or the drain field itself has failed, replacement often makes more financial sense than continuing to put money into an aging system. We’ll always give you a straight answer on this after seeing your system — not the answer that generates the larger invoice.

How long does a septic installation take?

From first contact to final sign-off, most residential installations take 6 to 12 weeks — the majority of that time is permitting, not construction. The physical installation typically takes 2 to 5 days depending on system type and site conditions. Clatsop County Environmental Health and DEQ review timelines can vary, but we manage all of that for you and keep you updated throughout. We’ll give you a realistic timeline estimate specific to your project when we provide your quote.

Do you handle the DEQ permit paperwork?

Yes — completely. Every installation, replacement, and qualifying repair we complete includes full permitting management: soil evaluation coordination, permit application preparation and submission to Clatsop County Environmental Health, all back-and-forth with county staff and DEQ during review, inspection scheduling, on-site presence during inspections, and final as-built documentation. You deal with us, not the county offices. There is no additional fee for permitting — it’s part of every project.

What areas do you serve?

All of Clatsop County — every incorporated city and all unincorporated areas, at the same flat rate. Gearhart, Cannon Beach, Seaside, Astoria, Warrenton, Hammond, Arch Cape, Manzanita, and rural east county parcels. We charge no mileage fees and no travel surcharges regardless of where in the county your property is located. If your address is in Clatsop County, we come to you at our standard rate.

Do you work on commercial properties?

Yes. We design and install septic systems for restaurants, retail buildings, short-term rental properties, and small multi-unit residential developments throughout Clatsop County. Commercial projects follow a separate DEQ permitting process from residential systems — sizing requirements, treatment standards, and inspection protocols are different — but we manage that process completely, the same way we do for residential work. Contact us with your property type and intended use and we’ll let you know what the project would involve.

Get a free estimate

Tell us about your project.

No pressure, no obligation — just an honest assessment from a local team that knows the North Coast. We typically respond within one business day.

Free estimates on all installation, repair, and replacement projects

No mileage fees — we serve all of

Clatsop County at the same rate

Response within 1 business day —

often same day for urgent situations

Licensed & insured — CBB #173131, fully bonded for your protection

Request a Free Estimate

We’ll review your project and get back to you promptly.

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Ready to Get Started?

Whether you’re planning a new installation, dealing with a repair, or ready to replace an aging system — we’re your local team. Call today for a free estimate.

Licensed & Insured · CBB #173131 · Serving All of Clatsop County · AllCountySeptic.com · A Keith Keranen Excavating Company