Design & Construction Standards
Clean Water Services' (CWS) Design and Construction Standards describe administrative and technical requirements for development and construction activities that occur within CWS’ jurisdictional boundary.
The Standards address a range of topics including the design and construction of sanitary sewer and surface water management systems, erosion control methods and natural resources protection.
Design & Construction Standards (Current): R&O 19-5 as Amended by R&O 19-22, adopted November 12, 2019
Resolution & Order 19-22 & Table of Contents
Chapters
- Chapter 1 (PDF, 213KB) - General Requirements and Administrative Provisions
- Chapter 2 (PDF, 261KB) - Administrative Procedures
- Chapter 3 (PDF, 388KB) - Sensitive Areas and Vegetated Corridors
- Chapter 4 (PDF, 699KB) - Runoff Treatment and Control
- Chapter 5 (PDF, 247KB) - Conveyance Design
- Chapter 6 (PDF, 210KB) - Erosion Prevention and Sediment Control
- Chapter 7 (PDF, 164KB) - General Construction Specifications for Conveyance Systems
- Chapter 8 (PDF, 294KB) - Technical Specifications for Conveyance Systems
- Chapter 9 (PDF, 816KB) - Wastewater Pump Stations and Force Mains
- Chapter 10 (PDF, 121KB) - Septic Tank Effluent Pump (STEP) Systems
Appendix A - Planting Requirements
Appendix B - Standard Details
- Appendix B Table of Contents (PDF, 28KB)
- Manholes and Appurtenances 010 - 270 (PDF, 2.9MB)
- Storm Structures 300 - 407 (PDF, 1.6MB)
- Pipes 500 - 620 (PDF, 1.6MB)
- Stormwater Management 700 - 794 (PDF, 3.8MB)
- Erosion Control 800 - 950 (PDF, 3.6MB)
- Pump Stations 1000 - 1082 - (PDF, 9.1MB)
- Flow Monitoring, Testing Forms, Computational Aids 1100 - 1285 (PDF, 813KB)\
- AutoCAD Files
Hydromodification Map Web Tool
Archived Design & Construction Standards: R&O 17-5
This archived version of the Standards, R&O 17-5, may be used for projects with a land use application date prior to April 22, 2019. Review the Implementation Policy (PDF, 336KB) for details about whether this version of the Standards may apply to a given project.
Resolution & Order 17-5 & Table of Contents
Chapters
- Chapter 1 (PDF, 80KB) - General Requirements and Administrative Provisions
- Chapter 2 (PDF, 118KB) - Administrative Procedures
- Chapter 3 (PDF, 257KB) - Sensitive Areas and Vegetated Corridors
- Chapter 4 (PDF, 114KB) - Runoff Treatment and Control
- Chapter 5 (PDF, 101KB) - Conveyance Design
- Chapter 6 (PDF, 63KB) - Erosion Prevention and Sediment Control
- Chapter 7 (PDF, 49KB) - General Construction Specifications
- Chapter 8 (PDF, 112KB) - Technical Specifications for Conveyance Systems
- Chapter 9 (PDF, 2343KB) - Wastewater Pump Stations and Force Mains
- Chapter 10 (PDF, 17KB) - Septic Tank Effluent Pump (STEP) Systems
Appendix A - Planting Requirements
Appendix B - Standard Details
- Index (PDF, 28KB)
- All Details (PDF, 13.6MB)
- Standard Details 010-090 (PDF, 747KB)
- Standard Details 100-190 (PDF, 555KB)
- Standard Details 200-270 (PDF, 442KB)
- Standard Details 300-400 (PDF, 593KB)
- Standard Details 500-620 (PDF, 847KB)
- Standard Details 700-790 (PDF, 1.04MB)
- Standard Details 800-895 (PDF, 1.45MB)
- Standard Details 900-950 (PDF, 1.01MB)
- Standard Details 1001-1011 (PDF, 782KB)
- Standard Details 1070-1075 (PDF, 3.23MB)
- Standard Details 1076-1081 (PDF, 2.41MB)
- Standard Details 1100-1285 (PDF, 813KB)
- Standard Details in PNG format (ZIP, 7.85MB)
- Standard Details in DWG Format for AutoCAD users
Resources
Low Impact Development Approaches Handbook
Erosion Control Manual
Tualatin River Urban Stormwater Tool (TRUST)
