Thurston County and City of Olympia


Thurston County has offered low-interest loans for repairs of on-site sewage systems (OSS) since 1993, when it began its ‘hardship’ loan fund. The County received Water Pollution Control State Revolving Fund loans during the FY 1995, 1997, 2000, 2002, 2005, 2007 and 2012 funding cycles. Also, a grant component was added to the Thurston County On-Site Financial Assistance Program through the FY2006 legislative set-aside, and Centennial Clean Water Program (Centennial).

Loans and grants can be used to replace failing on-site sewage systems or to connect to public sewer where that is the best solution.

While homeowners county-wide are eligible for loans and grants under the Thurston County program, the County does target sensitive watersheds, in particular the Henderson Inlet watershed. The targeted sensitive areas have the potential to impact commercial and recreational shellfish harvesting areas.

Information about the On-Site Financial Assistance can be found on Thurston County Environmental Health Division’s Website:

In 2008, the City of Olympia received a $250,000 SRF loan from Ecology to fund a low-interest loan program for homeowners within the City. The City wanted to offer these loans to low-income households to defray the costs of converting from OSS to public sewer. The City planned to target neighborhoods with existing OSS within environmentally sensitive areas.


Funding History

Thurston County:

City of Olympia:



The map below shows the repairs funded by this program through June 2012.


Contact Information

For information about Thurston County's program, contact:

Debra Baker
Thurston County Public Health
(360) 867-2628