Septic Systems

Delta County requires that a permit be issued for the installation, repair, replacement or alteration of any new or existing on-site wastewater treatment systems (OWTS), formerly known as individual sewage disposal systems (ISDS), in Delta County.

New Systems Within Unincorporated Delta County
Download the on-site wastewater treatment system (OWTS) application. Please note that you must apply for and obtain the Access/Address Permit before obtaining the on-site wastewater treatment system (ISDS) permit. For more information, see the Development Application and Development Permit Fact Sheet

New Systems Within the Town of Orchard City or the City of Delta 
For new systems within the Town of Orchard City or the City of Delta, the on-site wastewater treatment system (OWTS) application specific to the two communities must be filled out and submitted to the Delta County Health Department. Application instructions are also available.  Contact the city building official for more detailed building information: City of Delta, Town of Orchard City
 
Repairs, Alteration, and Replacement Systems
All major repairs, replacement, alterations of existing OWTS require a permit. An on-site wastewater treatment system (OWTS) application must be filled out and submitted to the Delta County Health Department prior to construction. For more detailed information, see the OWTS Instructions.

Related Forms and Information
Return to the Planning and Community Development web page.