2026-015 RFQ Kitsap County Code: Title 13 Updates

KITSAP COUNTY
STANDARDS
FOR
SANITARY SEWER CONSTRUCTION
614 Division Street
Port Orchard, Washington 98366
(360) 337-5777
Last Revised: October 2025
Kitsap County
Standards for Sanitary Sewer Construction 1 October, 2025

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Kitsap County
Standards for Sanitary Sewer Construction 2 October, 2025

Table of Contents
Definitions ...................................................................................................................... 7
Section 1: General Requirements .............................................................................. 10
1.1 General ................................................................................................................ 10
1.2 Submittals ............................................................................................................ 11
1.3 Drawing Requirements ......................................................................................... 11
1.4 Siting Considerations ........................................................................................... 12
1.5 Easements ........................................................................................................... 12
1.6 Developer Responsibilities ................................................................................... 12
1.7 Blockages ............................................................................................................ 14
Section 2: Sewer Pipe Design .................................................................................... 14
2.1 Design Considerations ......................................................................................... 14
2.2 Pipe Design .......................................................................................................... 15
2.3 Materials .............................................................................................................. 17
2.4 Joints and Fittings ................................................................................................ 19
2.5 Miscellaneous ...................................................................................................... 20
Section 3: Trenching and Pipe Installation ............................................................... 21
3.1 General ................................................................................................................ 21
3.2 Trenching ............................................................................................................. 21
3.3 Materials .............................................................................................................. 22
3.4 Pipe Bedding ........................................................................................................ 23
3.5 Pipe installation .................................................................................................... 23
3.6 Backfill .................................................................................................................. 23
Section 4: Manholes and Cleanout Design and Construction ................................ 24
4.1 Locations of Cleanouts and Manholes ................................................................. 24
4.2 Manhole Connections .......................................................................................... 25
4.3 Manhole Design ................................................................................................... 26
4.4 Installation ............................................................................................................ 28
Section 5: Industrial and Commercial Pretreatment ................................................ 29
5.1 Description/Design ............................................................................................... 29
5.2 Grease Interceptor ............................................................................................... 29
5.3 Grease Trap ......................................................................................................... 30
5.4 Operations and Maintenance ............................................................................... 30
5.5 Plumbing for Dumpster Pads ............................................................................... 31
Kitsap County
Standards for Sanitary Sewer Construction 3 October, 2025

Section 6: Alternative Systems and Special Requirements .................................... 31
6.1 Special Requirements .......................................................................................... 31
6.2 Individual Grinder Pump Stations ......................................................................... 32
6.3 Other Alternative Systems ................................................................................... 36
Section 7: Pump Station Provisions and Records ................................................... 36
7.1 Introduction .......................................................................................................... 36
7.2 Operation and Maintenance Manuals .................................................................. 37
7.3 Record Drawings ................................................................................................. 38
Section 8: Site Requirements ..................................................................................... 39
8.1 Site Layout and Information ................................................................................. 39
8.2 Flood Protection ................................................................................................... 39
8.3 Access for Maintenance ....................................................................................... 39
8.4 Fire Protection ...................................................................................................... 40
8.5 Fencing ................................................................................................................ 40
8.6 Lighting ................................................................................................................ 40
8.7 Water Supply ....................................................................................................... 41
8.8 Landscaping ......................................................................................................... 41
Section 9: Building Requirements ............................................................................. 41
9.1 General ................................................................................................................ 41
9.2 Free-Standing Shelters ........................................................................................ 41
9.3 Masonry Walls ..................................................................................................... 41
9.4 Doors and Frames ............................................................................................... 42
9.5 Metal Roofing ....................................................................................................... 43
9.6 Color .................................................................................................................... 43
Section 10: Pump Design and Hydraulics ................................................................. 44
10.1 General .............................................................................................................. 44
10.2 System Hydraulics ............................................................................................. 44
10.3 Pump Selection and Requirements .................................................................... 44
10.4 Appurtenances ................................................................................................... 48
10.5 Installation and Training ..................................................................................... 49
Section 11: Wet Well and Vault Design and Construction ....................................... 51
11.1 System Fabrication ............................................................................................ 51
11.2 Loading Requirements ....................................................................................... 51
11.3 Coating Systems ................................................................................................ 52
Kitsap County
Standards for Sanitary Sewer Construction 4 October, 2025

11.3.1 Preparation ..................................................................................................... 55
11.3.2 Application ...................................................................................................... 57
11.3.3 Quality Assurance ........................................................................................... 58
11.3.4 Testing ............................................................................................................ 59
11.3.5 Cleanup ........................................................................................................... 59
11.4 Hatches .............................................................................................................. 59
11.5 Station Valve Vault ............................................................................................. 60
11.6 Wet Well Flushing Line and Valve ..................................................................... 60
11.7 Valves ................................................................................................................ 60
11.8 Pipe, Fittings, and Gaskets ................................................................................ 62
11.9 Wet Well Drop Bowl Assembly ........................................................................... 63
11.10 Pump Station Standards and Requirements .................................................... 63
Section 12: Electrical and Controls ........................................................................... 64
12.1 General .............................................................................................................. 64
12.2 Standards and Codes ........................................................................................ 65
12.3 Emergency Power .............................................................................................. 65
12.4 Alarms ................................................................................................................ 66
12.5 Telemetry Equipment ......................................................................................... 66
12.6 Electrical Design ................................................................................................ 68
12.7 Control Panel ..................................................................................................... 69
12.8 Wet Well Junction Boxes ................................................................................... 71
12.9 Generator ........................................................................................................... 71
12.10 Instrumentation ................................................................................................ 76
12.11 Controls ............................................................................................................ 77
Section 13: Testing and Acceptance ......................................................................... 78
13.1 General Sewer Testing ...................................................................................... 78
13.2 Television Inspection .......................................................................................... 78
13.3 Pressure Testing ................................................................................................ 79
13.4 Side Sewer Testing ............................................................................................ 79
13.5 Pump Station Testing ......................................................................................... 79
13.6 Field Testing ...................................................................................................... 80
13.7 Generator Testing .............................................................................................. 81
13.8 Alarm, Control, and Equipment Tests ................................................................ 82
13.9 Acceptance and Closeout .................................................................................. 82
Kitsap County
Standards for Sanitary Sewer Construction 5 October, 2025

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Kitsap County
Standards for Sanitary Sewer Construction 6 October, 2025

Definitions
* ANSI: American National Standards Institute
* ASTM: American Society for Testing and Materials
* ATS: Automatic Transfer Switch
* AWWA: American Water Works Association
* BHP: Brake Horsepower
* Building Sewer (Upper Lateral): That portion of a sanitary sewer line that will be
constructed from the end of the side sewer to the residence or building in which the
sewage originates.
* CB: Circuit Breaker
* CDF: Control Density Fill
* CSA: Canadian Standards Association
* Customer: Property owner or resident subscribing to sewer service.
* DCD: (Kitsap County) Department of Community Development
* Developer/Contractor: Land development company or contracted builder. Entity
constructing improvements or responsible for constructing improvements to Kitsap
County Standard.
* DFT: Dry Film Thickness
* DI: Ductile Iron
* DWV: Drain, Waste, Vent (Pipe)
* EPDM: Ethylene Propylene Diene Monomer (Rubber)
* ETL: Electrical Testing Laboratories
* FL: Flared (fitting) or Flanged
* Flexible pipe: PVC and HDPE will be considered flexible pipe unless defined otherwise
herein.
* FM: Factory Manual
* Force Main: Pressurized pipe transmitting sewage from a lift station.
* FPS: Feet Per Second
* FRP: Fiberglass Reinforced Plastic
* GE: Groove End
* GFI: Ground Fault Interrupter
* GP: Grinder Pump
* GPM: Gallons Per Minute
* HDPE: High Density Polyethylene
* HOA: Hands-off-Automatic
* ICRI: International Concrete Repair Institute
* ID: Inner Diameter
* IEEE: Institute of Electrical & Electronic Engineers
* IPCEA: Insulated Power Conductor Engineering Association
* IPS: Individual Pump Station; a small, single pump station designed to provide service to
a single residence or business.
* kW: Kilowatt
* LED: Light Emitting Diode
* NACE: National Association of Corrosion Engineers
* NEC: National Electrical Code
* NEMA: National Electrical Manufacturers Association
* NESC: National Electrical Safety Code
Kitsap County
Standards for Sanitary Sewer Construction 7 October, 2025

* NFPA: National Fire Protection Association
* NPT: National Pipe Thread
* O&M: Operations and Maintenance
* OD: Outer Diameter
* OSHA: Occupational Safety & Health Act
* PE: Plain End
* PLC: Programmable Logic Controller
* Plan: Prepared drawings and specifications stamped and sealed by a licensed Engineer.
* PSF: Pounds per Square Foot
* PSI: Pounds per Square Inch
* PVC: Polyvinyl Chloride
* Rigid Pipe: Ductile Iron or C900/C905 PVC will be considered rigid pipe.
* RTU: Radio Telemetry Unit
* SBR: Styrene-butadiene Rubber
* SDR: Standard Diameter Ratio
* Sewer Main: A gravity sewer that may have direct side sewer connections and receives
flow from one or more other mains.
* Sewer Utility Division: Referred to as the County, other divisions named specifically
* Side Sewer (Lower Lateral): that portion of a sewer line that will be constructed between
a main sewer line and the property line or easement line (whichever is further) of a
residence or other building in which the sanitary sewage originates.
* SSFM: See definition for Force Main
* SSPC: Steel Structures Painting Council
* Standard Specifications: Current edition of the WSDOT Standard Specifications for
Road, Bridge, and Municipal Construction
* TDH: Total Dynamic Head
* UL: Underwriters Laboratories
* UPC: Uniform Plumbing Code
* VFD: Variable Frequency Drive
* VSD: Variable Speed Drive
* WADOE: Washington Department of Ecology
* WSDOT: Washington State Department of Transportation
Kitsap County
Standards for Sanitary Sewer Construction 8 October, 2025

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Kitsap County
Standards for Sanitary Sewer Construction 9 October, 2025

Section 1: General Requirements
1.1 General
1.1.1 These Standards for Sanitary Sewer Construction (Standards) set forth minimum
standards for the planning, design, and construction of sanitary sewer facilities in Kitsap
County. Although these Standards are intended to apply to physical development within
Kitsap County, the standards may not apply for all situations. Compliance with these
Standards does not relieve the party responsible for the project of their duty to apply
conservative and sound professional judgment. These standards are minimum standards
and are intended to assist, but not substitute for, competent work by design professionals.
The Kitsap County Public Works Sewer Utility Division, hereby referred to as "the County",
may require more stringent requirements than would normally be required under these
Standards due to special conditions and/or environmental constraints.
1.1.2 These Standards shall be used in conjunction with the Department of Ecology's most
current version of "Criteria for Sewage Works Design." Since the following requirements are
general and do not cover all possible situations, the County reserves the right to deviate from
these standards if the County feels the project warrants such.
1.1.3 It is the policy of the County that the Developer extend any sanitary sewer
improvements to the most distant end of abutting and interior Right of Way or easements
unless it is determined by the County, according to its rules and policies, that extension of
the sanitary sewer will not be necessary. Developers owning corner property must extend the
wastewater system to the far ends of both corners of the property unless it is determined by
the County, in its sole discretion, that said extension of the system is not necessary. The
wastewater system must be extended to the far end of the development at depths, whenever
possible, that enable the County to provide gravity service to upstream properties.
1.1.4 Sewer extensions must provide adequate capacity to allow for the future expansion of
the system in conformity with the County's comprehensive planning or future needs as
determined by the County. Properties which propose Lift Stations may be required to install
expanded storage capacity in their designs for future upstream connections.
1.1.5 All sewer mains and other facilities must be installed in public Right of Way or in
recorded utility easements dedicated to the County. The developer or the developer's
engineer must check with the County prior to beginning the design of the extension to
determine if there is a preferred main location. Utility mains and other facilities installed
outside of dedicated Right of Way and required easements, will remain privately owned and
maintained by the common property ownership. Some exclusions to this policy may be
granted on a case-by-case basis at the discretion of the County.
1.1.6 The County will not inherit, own, or operate septic systems.
1.1.7 Systems constructed within commercial and single family residential private property
will not be dedicated to the County and will remain under private ownership unless otherwise
directed by the Division Manager. Sewer infrastructure located within private roads in platted
single family residential projects will be dedicated to the County.
1.1.8 Connections to existing sewer mains shall not be made without first receiving all
issued permits from Kitsap County. Work shall not be started until all traffic control, materials,
equipment, and labor necessary to properly complete the work are assembled on the site. A
Kitsap County
Standards for Sanitary Sewer Construction 10 October, 2025