Plumbing

Requirements

Plumbing permits are required for: 

  • New plumbing (drain and waste piping and water lines)
  • Any new connections to the potable water system
  • Yard irrigation systems (connections to potable water supply and backflow prevention)
  • House sprinkler systems
  • Water heaters (gas, electric, tankless (instantaneous) and all manufactured home water heaters)
  • Water heat recovery systems
  • New plumbing fixtures (beyond fixture replacement/ maintenance)
  • Water sanitization (new construction and remodeling/additions)

Inspections

Inspections include:

  • Backflow prevention
  • Final inspections
  • Fire-stopping at floor and ceiling lines and wall plates
  • Glues and primers/couplings
  • Joints and fittings
  • Notching and boring of wood
  • Pipe protection
  • Pipe sizing
  • Plumbing materials
  • Slopes and pipe supports
  • Venting

Documents

  1. 2015 CSST Bonding Clarification Notice (PDF)
  2. Irrigation System Permit Fees and Inspections (PDF)
  3. Mechanical Ventilation and Combustion Air Form Instructions - Example (PDF)
  4. Mechanical Ventilation and Combustion Air Form (PDF)
  1. Owatonna Plumbing Permit Application (PDF)
  2. Potable Water Disinfection Certification (PDF)
  3. Water Heater Installation Certification (PDF)
  4. Water Heater Installation Permit Fees and Inspections (PDF)