Central Oregon Septic Assistance Program

COSAP offers financial aid for Crook, Deschutes, and Jefferson County homeowners at or below moderate income level who need to repair or replace septic systems.

COSAP is a program administered by the Central Oregon Intergovernmental Council with assistance from the COSAP Steering Team. COSAP was made possible thanks to a grant award from the Oregon Department of Environmental Quality’s Onsite Septic Financial Aid Program.

The application for COSAP’s first round of funding will go live on September 1, 2023 and will close October 15, 2023 at 11:59pm. Please sign up for program alerts to stay up to date with important program information.

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At this time, applications for the Central Oregon Septic Assistance Program are closed. Thank you to those who have applied; you will be notified based upon your award status soon.

Homeowners in Crook, Deschutes, and Jefferson Counties may be eligible for a grant to repair/replace their septic system, or connect to a sewer line if:

  • They have a failing septic system
  • Their systems are non-compliant and post an imminent risk to public health and/or are likely to result in significant environmental impact

Applications with household incomes at or below the income* figures listed in the table below will be prioritized for this round of funding. For questions about income, please contact your sanitarian or COIC through the listed methods at the end of this page.

Maximum Eligible Incomes by Household Size


County Persons in Household
1 2 3 4
Crook $51,120 $58,380 $65,700 $72,960
Deschutes $64,020 $73,140 $82,260 $91,380
Jefferson $51,120 $58,380 $65,700 $72,960

*COSAP uses 120% of HUD’s Community Development Block Grant definition of LMI.

If your household size is greater than 4, please contact us for assistance.

Available Grant Awards:

Grants may cover up to $20,000 for standard systems or up to $30,000 for an alternative system.

Grants may cover septic repairs or replacements that have occured after January 1, 2023.

Frequently Asked Questions

What is the application process?

Applications are currently closed. Applicants will be notified of their application on a rolling basis.

I have already paid for work on my septic system. Am I eligible to apply for reimbursement?

Homeowners are able to apply for eligible reimbursements for repairs that occurred during any time during 2023. Please specify the amount and the timeframe of work in your application.

Can I apply as a small business owner?

During this first round of applications, we will not be accepting applications from small business owners.

How will my income be determined?

COSAP uses 120% of area low to moderate income (LMI), based upon the U.S. Department of Housing and Urban Development’s (HUD) definition of LMI. HUD’s definition of LMI is 80% median family income.

Within the application, you will be asked to submit your most recent tax return. If you are unable to supply a tax return, please submit three months’ paystubs or Social Security statements.

Who counts as a member in my household?

For determining income, COSAP uses your financial dependents listed in your most recent tax returns.

COSAP will also ask for the number of people living in your home (including tenants, relatives, and non-relatives) to determine the load on your septic system. This will help us score applications.

Please reach out to septic@coic.org with assistance.

Contact Us

Contact your county sanitarian
Crook Chris Haindel – christopher.haindel@co.crook.or.us
Deschutes  Todd Cleveland – todd.cleveland@deschutes.org
Terrebonne Kristin Yurdin –
Redmond Lindsey Cromsigt –
Jefferson Matt Puntney –
General Comments or Questions?

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Give us a call

(458) 666-3299

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