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Public Sewer

Do Not Print Out Construction Plans or Other Documents

Construction plans and documents are to be submitted electronically. Paper documents are not accepted when applying for a permit.

The instructions and forms listed below are undergoing review. Some may still contain outdated instructions to print out copies of construction plans and documents. Please ignore that instruction and submit electronically. Only print items if directly instructed by Permit Sonoma for your situation.

More information about Sanitation Sewer

ACT-001 Refund Request Form (PDF)

Use form ACT-001 to request a Refund for Expenses Incurred (PDF: 377 kB) (Version 11/18/2022)
Form must be submitted via email to: PermitSonoma-RefundRequest@sonoma-county.org
CSS-019 Minimum Standard Site Plan Requirements

Minimum standard site plan requirements for most applications at Permit Sonoma. (Planning applications have different site plan requirements.) (Revised 12/09/2020)
DRN-006 Drainage Report Required Contents

Drainage reports shall be prepared with sufficient clarity to indicate the nature and extent of proposed drainage improvements. (Version: 06/07/2021)
ENC-001 Application for Encroachment Permit (PDF)

Use this form to allow work to be performed, or activity to take place within a County Right-of-Way. (PDF: 209 kB) (Version 05/13/2022)
ENC-002 Insurance Requirements for Encroachment Permits

Identify the insurance requirements to obtain a encroachment permit. (Revised 11/11/2018)
ENC-005 Insurance Requirements for Special Event Permits

Identify the insurance requirements to requirements to obtain a special event permit. (Revised 11/11/2018)
ENG-005 Engineering Division Services At-Cost Fee Agreement (PDF)

Agreement between (Applicant), and the Permit Sonoma for Engineering at-cost Fee (PDF: 324 kB) (Version 02/28/2020)
NPD-007 Best Management Practices for Construction Sites

Best Management Practices that construction site managers shall implement to keep pollutants from entering the storm drain system or nearby waterways. (Version 03/16/2023)
SAN-003 Public Sewer General Inspection & Construction Guidelines

Provides general inspection information and construction guidelines for sewer permits for building sewer (from structure to property, or sewer easement, line cleanout) connections. (Version 05/11/2021)
SAN-004 Outside Service Area Sewer

Summary of the background information and the necessary requirements to request public sewer service for a property located outside of the service area of a County sanitation district or zone. (Revised 01/22/2015)
SAN-005 Application for Outside Area Sewer

The from shall be completed by the Applicant to provide the necessary information for Permit Sonoma to determine if the property in question can receive sanitary sewer service from a Sonoma County Sanitation District or Zone. (PDF: 363 kB) (Version 02/28/2020)
SAN-006 Engineering Water and Sewer Referral List

This is a referral list of agencies and companies in Sonoma County that provide water and/or sewer services. Properties not served by these entities may be on a small well or served by a septic system.(Revised 05/29/2015)
SAN-009 Sewer Construction Plan Requirements

Provides minimum site plan requirements for sewer construction permit applications.. (Version 09/17/2024)
SAN-010 Application for Sewer Permit (PDF)

Sewer permit application for various types of activities including building sewer, lateral, repair or replace, cleanout, cap, pump system/pressure lines, sewer main line, manhole, etc. (PDF: 283 kB) (Revised: 06/28/2022)
SAN-022 Sonoma Water Requirement for Specification for Side Sewer Pipe Bursting Application (PDF)

The following Information and specifications shall be included with any application for the use of Pipe Bursting Technology for replacement of private Building Sewers (within private property), public Lateral Sewers (within public right-of-way) or Side Sewers (Building Sewer plus Lateral Sewer) in accordance with the Sonoma Water Design and Construction Standards for Sanitation Facilities (Water Agency Standards). (PDF: 198 kB) (Version: 05/27/2022)