Standard Specifications
The Sanitary Sewer and Recycled Water Standards (Standard Specifications) govern requirements, design, and all work in connection with main sewer, public and private laterals, and recycled water systems construction within the NapaSan service area (PDF). For questions about the Standard Specifications, please contact the NapaSan Engineering Department at 707-258-6000.
The Standard Specifications may be updated periodically. Please check that you have the most up-to-date version before designing or constructing your project.
NapaSan has updated portions of the Sanitary Sewer and Recycled Water Standards effective June 30, 2022. Click here for a summary of these updates.
Sections & Sheets
| Standard Specifications | Revision Date |
|---|---|
| Complete Document (PDF) | June 2022 |
| Table of Contents (PDF) | June 2022 |
January 2016 | |
June 2022 | |
June 2022 |
| Standard Details: Sanitary Sewer | Revision Date |
|---|---|
June 2019 | |
SS-2: Standard Residential Public Lateral for New Construction (PDF) | June 2022 |
SS-3: Sewer Lateral Crossing Above Utility, No Conflict in Grade (PDF) | June 2018 |
SS-4: Simple Sewer Lateral Break, Sewer Below Utility, No Conflict in Grade (PDF) | May 2012 |
SS-5: Simple Sewer Lateral Break with Conflict in Grade (PDF) | May 2012 |
May 2012 | |
January 2016 | |
June 2017 | |
June 2021 | |
June 2021 | |
SS-10: Barrel Section Joints for Standard Pre-Fab Manhole (PDF) | January 2016 |
January 2016 | |
SS-12 No longer in use | |
May 2012 | |
May 2012 | |
May 2012 | |
May 2012 | |
SS-17: Typical Installation Irrigation “Subtraction” Meter (PDF) | May 2012 |
June 2018 | |
May 2012 | |
June 2018 | |
June 2022 | |
January 2016 | |
January 2016 | |
January 2016 | |
May 2012 | |
May 2012 | |
June 2019 | |
SS-29: Trench Section for Replacement/Repair of Residential Sewer Lateral (PDF) | January 2016 |
| Standard Details: Recycled Water | Revision Date |
|---|---|
| January 2016 | |
| RW-2: Concrete Thrust Blocks for Horizontal Bends (PDF) | January 2016 |
RW-3: No longer in use | May 2012 |
January 2016 | |
RW-5: No longer in use | May 2012 |
January 2016 | |
| RW-7: 2 Inch Recycled Water Service Lateral for 1-1/2 Inch Meters (PDF) | June 2021 |
RW-8: 1 Inch Recycled Water Service Lateral for 3/4 inch Meters (PDF) | June 2021 |
RW-9: No longer in use | May 2012 |
| RW-10: No longer in use | May 2012 |
RW-11: No longer in use | May 2012 |
January 2016 | |
January 2016 | |
June 2021 | |
May 2012 | |
May 2012 | |
January 2016 | |
May 2012 |