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For Contractors
We are offering rebates for qualifying septic system and side sewer maintenance activities (see restrictions in the table below). One rebate is available per parcel.
| Type of rebate | Rebate amount | Eligible geographical area | Income eligibility requirements | Eligible maintenance activities |
|---|---|---|---|---|
| Septic system maintenance rebate | Up to $500 | Vashon-Maury Island and within the Poverty Bay Shellfish Protection District | None | Septic system inspection, pumping, or riser installations |
| All of King County, excluding Vashon-Maury Island and the Poverty Bay Shellfish Protection District | Annual household income at or below 80% of King County’s area median income. | |||
| Side sewer repair rebate | Up to $5,000 | Lakehaven and Midway Sewer Districts | None | Disconnecting illicit connections, lining, or making repairs to existing side sewers to eliminate stormwater or groundwater inputs. |
To incentivize action by the property owner homeowner and reduce the financial burden, the septic system and side sewer repair rebates are issued directly to the contractor performing the work, not the property owner. The property owner is responsible for the cost of the septic system maintenance or side sewer repair work minus the cost of the eligible rebate amount.
Note: if large ground-disturbing work will occur during septic system maintenance or side sewer repair work, then a cultural resources review process will be required. The initial cultural resources review could take up to 45 days. Contact picrebates@kingcounty.gov for more information about this cultural review process.
Septic system maintenance rebate
Septic system rebate reimbursement form for contractors
Eligible activities
The following septic system maintenance activities are eligible for this septic rebate:
- Inspection
- Pumping*
- Riser installation*
*The rebate may be used for pumping and riser installation only if an inspection is also conducted OR if Public Health – Seattle & King County has issued an order to the property owner for pumping.
Steps for certified septic professional to receive rebate payment for an eligible project:
- Get the rebate voucher number (issued by King County) from the property owner.
- Complete the septic system maintenance.
- Send a copy of the reimbursement form with your invoice and a King County W-9 to picrebates@kingcounty.gov.
Rebate requirements:
- Maintenance must be performed between March 1, 2024 and March 31, 2026.
- Maintenance must be performed within 3 months of the rebate voucher being sent to the property owner.
- All septic work must be performed by a King County certified septic maintainer or a King County certified septic pumper.
- King County will reimburse the eligible rebate amount to the septic professional (not the property owner).
Side sewer repair rebate
Side sewer rebate reimbursement form for contractors
Eligible activities
Repair work that reduces infiltration and inflow to side sewers is eligible for our side sewer repair rebate program. Examples of eligible side sewer repair work includes, but is not limited to:
- Disconnecting roof downspouts or sump pumps from side sewers
- Replacing or lining leaking side sewer pipes
- Capping a side sewer clean out line
- Scoping side sewer lines to inspect for side sewer repair needs
Steps for authorized sewer contractor to receive rebate payment for an eligible project:
- Get a copy of the rebate confirmation letter from the property owner, which will have the voucher number for the rebate.
- The rebate confirmation letter will specify what side sewer maintenance activities qualify for the rebate.
- Complete the side sewer repair work for the eligible property.
- Before completing maintenance or repairs, obtain any necessary permits for the work being performed.
- Only maintenance activities outlined in the rebate qualification letter are eligible for reimbursement.
- Send a copy of the reimbursement form with your itemized invoice and a King County Substitute W-9 to picrebates@kingcounty.gov.
Rebate requirements:
- Maintenance must be performed between 3 months of the rebate voucher being sent to the property owner.
- Maintenance must be performed between March 1, 2024 and March 31, 2026.
- All work must be performed by a sewer contractor authorized through the Lakehaven or Midway Sewer Districts.
- King County will reimburse the eligible rebate amount to the sewer contractor (not the property owner).
This project has been funded wholly or in part by the United States Environmental Protection Agency under assistance agreement PC-01J89801-1 to the Washington State Department of Health. The contents of this document do not necessarily reflect the views and policies of the Environmental Protection Agency, nor does mention of trade names or commercial products constitute endorsement or recommendation for use.