Soil Resources
Design Guidance
Regulation 43
Regulation 43 clarification statements:
- Acceptable location of a pump or dosing siphon.
- Design of unlined sand filters - revised November 2015.
- Design using chambers.
- Infiltrative surface.
- Replacement/added soils.
- Required Setback from OWTS to a Well or Cistern.
- Vertical Isolation and Media Depth Chart and Explanation.
- Siphon Design
Siphon Sizing Worksheet provided by OSI, Inc.
CPOW Guidance Document for NDDS-Final Revised September, 2016
Training Videos
Colorado Test Pit Demonstration
CPOW Logo