King County On-Site Sewage System Loan Program

King County Wastewater Treatment Division

Available Home Repair

About This Program

King County On-Site Sewage System Loan Program is available to homeowners in Fremont, WA.

Low-interest loans to repair or replace failing septic systems for homeowners in King County. Protects groundwater and Lake Washington. Income-qualified homeowners may receive grants or deferred payment options.

Loan or grant amount based on repair cost and household income

Official program page checked live on 2026-06-22.

Data last verified 2026-06-09. How we verify our data.

In Fremont, WA, you can combine this program with other local help to cut your cost:

Key Details

  • Up to $30,000 low-interest loan for septic repair/replacement
  • Available to all King County homeowners with failing systems
  • Income-qualified households may receive grants
  • Protects water quality and environment
  • Flexible repayment terms

How to Apply

Get free help applying Visit Official Program Page Track this program

(206) 477-5371

A grant-savvy contractor in Fremont, WA can handle the paperwork, inspections, and timelines so your funding releases on schedule. Getting matched is free.

You will likely need a contractor to apply

Projects like this almost always need a licensed contractor, and many grants ask for a written estimate as part of your application. Lining up a contractor in Fremont early keeps your application moving.

Get matched with a contractor

Each program sets its own contractor rules. Check the official program page for exact requirements.

Your application paperwork

Documents you will likely need

  • Proof you own and live in the home (deed, recent mortgage statement, or property tax bill).
  • A government-issued photo ID for every owner on title.
  • A written estimate from a licensed contractor for the work (many programs require this to apply).
  • Photos of the problem area or the work to be done.
  • The program's own application form, completed (use the official link or phone number on this page).
Download this checklist (PDF)

Requirements vary by program and locality. Confirm the exact rules on the official program page. We can help you prepare your paperwork, but you submit it yourself.

Deadline: Ongoing year-round

Questions about this program?

Ask us. It is free, and a real person answers within a business day.

Email us about this program

Frequently asked questions

How much can King County On-Site Sewage System Loan Program provide in Fremont, WA?

Up to $30,000 low-interest loan.

Who qualifies for King County On-Site Sewage System Loan Program in Fremont?

King County On-Site Sewage System Loan Program is open to homeowners in Fremont, WA. It has no income limit.

How do I apply for King County On-Site Sewage System Loan Program in Fremont, WA?

Apply directly with King County Wastewater Treatment Division using the official program link on this page or call (206) 477-5371. There is no middleman and no fee.

Need a Contractor for This Grant?

Grant-approved contractors understand the documentation, inspections, and timelines, so your funding releases on schedule.

Get matched with a pro, free Browse Fremont, WA contractors

Find More Programs in Fremont, WA

This is just one of many grants, rebates, and free programs available. Stack them together to maximize your savings.

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