Translate
Memorandums to On-site sewage professionals
- Accessory Dwelling Units (ADUs, 141 KB) June 26, 2025: Valid for applications received after April 1, 2025.
- Accessory Dwelling Units (ADUs, 174 KB) April 15, 2019: Valid for applications received prior to April 1, 2025
- OSS Code of Performance and Ethics (285 KB), April 23, 2025
- Technical memo to correct design flow for single family residences with additional bedrooms past three bedrooms (141 KB), March 3, 2025
- Bookings Appointment Instructions (266 KB) November 22, 2022
- Guidelines for Winter Water Table Review (WWTR) (854 KB) October 6, 2022
- OSS Repair Proposals, Permits, and Reporting (647 KB) June 6, 2022
- Time of Sale reporting updates, Tracking falling hazards, Homeowner manuals (543 KB) April 17, 2020
- Temporary closure of the Environmental Health Office to the public (292 KB) March 16, 2020
- New process for private well reviews and water service requirements (140 KB) May 22, 2019
- Updated addendum to OSS repair design and submission (198 KB) June 30, 2017
- Required Standards for OSS Repair Design and Submission (145 KB) March 4, 2016
- New process for reviewing individual (private) well proposals (120 KB) November 5, 2015
- Memorandum clarifying procedure for sewage tank repair (January 15, 2014)
- Inspection Scheduling, Site Application Template and Title 13 Correction of Errors (110 KB) January 12, 2009
Pre-2009 compilation
Download the compilation of all memorandums listed below (1 MB)
- Standards for the Submission of Documents July 8, 2002
- On-site System Maintainer Certification April 18, 2001
- Submission of Data and Final Analysis March 30, 2001
- Irrigation Lines March 9, 2001
- Permanent Power Notice on Title December 1, 2000
- Sand Filter Course Sand Media September 14, 2000
- Updating the Inspection Protocol August 4, 2000
- Resubmission fees on revised site applications January 18, 2000
- Wastewater Program Update September 3, 1999
- Intermittent sand filters: Best methods and practices for design, construction, and inspection July 16, 1999
- Private Individual Well Source: Guidance for Determination of Neighboring Well July 2, 1999
- Title 13 amendments - Important changes in practice for pumpers April 27, 1999
- Submission of complete applications for Health Department review March 8, 1999