King County Wastewater Treatment Division
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
Data last verified 2026-06-09. How we verify our data.
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.
Deadline: Applications accepted year-round
Ask us. It is free, and a real person answers within a business day.
Email us about this programGrant-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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