Plans Review and Approval of Sewage Works Construction Plans and Documents

  1. Preliminary Engineering Reports (PERs)
  2. Preliminary construction drawings (PPs)
  3. Engineering Reports (or calculations)(ER) for treatment projects
  4. Final construction documents
    • Final Drawings/Plans 
    • Specifications 
    • Engineering Reports or Calculations
  1. Plans for Drinking Water construction projects
  2. Compliance and Enforcement Documents
  3. Permit applications (NPDES, SOP, ARAP, Construction Stormwater, etc.)
  4. Projects required to be submitted in hard copy
  5. Approval extension requests – email to DWR.Engineering@tn.gov (no fee)
  1. Gather all documents and payment method (credit card or e-check):
    Cover letter
    Approval letter from owner (sample letter)
    Drawings as a separate single searchable PDF, legible when printed on 11X17 inch paper
    Specifications as a separate single searchable PDF
    Engineering report or calculations as a separate single searchable PDF
    Ensure that all drawings, specifications, engineering reports, and calculations are sealed by an engineer licensed in Tennessee.
  2. MyTDEC Forms – Engineering Services
    Click the link above, then "Begin Form Entry". You will need to register for an account (Skip "Add electronic signature capability" when registering). You can use the same account for multiple projects.
  3. Complete all sections of the Form and upload files.
  4. Electronic payment is required to complete the submittal.

There is not a review fee required for Preliminary Engineering Reports (PERs)

  1. Project review will commence once BOTH the plans and the payment are received.
  2.  Review the status of your project HERE or by clicking on the Dashboard in MyTDEC Forms.
  3.  You will be notified of any additional requirements via an email directing you to the MyTDEC Form. Responses and additional information are to be uploaded to MyTDEC Forms by clicking on the link provided in the email.
  4. Once plans are approved, you will receive an e-mail with the approval letter and a unique link to download a PDF of the approved documents.

Guidance for municipalities and industries for the design of sewage systems and wastewater treatment plants.

  Revision Archive
Design Criteria Table of Contents 2020  
Design Criteria Chapters    
Chapter 1  - General Engineering Requirements    
Wastewater Plans Review Fee Worksheet (Please note that form CN-1457 is no longer being used)    
Chapter 2 - Collection Systems    
Chapter 3 - Laboratory, Personnel, Maintenance Facilities and Safety Design    
Chapter 4 - Preliminary and Pretreatment Facilities    
Chapter 5 - Clarifiers    
Chapter 6 - Fixed Film Reactors    
Chapter 7 - Activated Sludge (Appendix 7-A)    
Chapter 8 - Nitrification    
Chapter 9 - Impoundments, Ponds & Aerated Lagoons 2025 2016
Chapter 10 - Disinfection 2025 2016
Chapter 11 - Tertiary Treatment / Advanced Wastewater Treatment    
Chapter 12 - Sludge Processing and Disposal    
Chapter 13 - Plant Flow Measurement and Sampling  
Chapter 14 - Instrumentation, Control and Electrical Systems  
Chapter 15 - Small Alternative Wastewater Systems  
Chapter 16 - Design Guidelines for Wastewater Treatment Systems Using Spray Irrigation  
Chapter 17 - Design Guidelines for Wastewater Dispersal Using Drip Irrigation  
Questions/Assistance?
DWR.Engineering@tn.gov