King County Wastewater Treatment Division
King County On-Site Septic Repair Loan Program is available to homeowners in Burien, WA.
Low-interest loans for homeowners in King County who need to repair or replace failing on-site septic systems. Flexible repayment terms and no income restrictions. Grant assistance may be available for low-income households.
Low-interest loan for septic system repair/replacement
Official program page checked live on 2026-06-22.
Data last verified 2026-06-09. How we verify our data.
In Burien, WA, you can combine this program with other local help to cut your cost:
A grant-savvy contractor in Burien, 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 Burien early keeps your application moving.
Get matched with a contractorEach program sets its own contractor rules. Check the official program page for exact requirements.
Documents you will likely need
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: Applications accepted year-round
Ask us. It is free, and a real person answers within a business day.
Email us about this programUp to $30,000 low-interest loan.
King County On-Site Septic Repair Loan Program is open to homeowners in Burien, WA. It has no income limit.
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.
Grant-approved contractors understand the documentation, inspections, and timelines, so your funding releases on schedule.
Rebates and discounts that stack on top of any grant. Most are free to use.
This is just one of many grants, rebates, and free programs available. Stack them together to maximize your savings.
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