Plan Review - Cross Connection Control

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Notify Distribution Water Quality & New Service (DWQNS) staff when you obtain a City or County construction permit that involves plumbing work.


  • New Service Connection Permit Application
  • Legal address of the property to be served.    
  • One full set of electronic plans, including:
    • Grading plans
    • Civil site plan depicting building footprint, property lines and public street intersections
    • Site Utility Plan - Water mains
    • MEP (Mechanical, Electrical, and Plumbing) Plans
    • Lawn Irrigation Plans showing location of backflow preventer
    • Fire Protection showing details of the fire riser    


    • Plans must show domestic and fire line connections, including:

      • Proposed location and size of water service connection
      • Proposed meter pit/vault(s).
      • Proposed vault(s)
      • Existing  water main
      • Proposed fire protection main
      • Proposed lawn irrigation
      • Backflow preventer vault(s) or the above ground enclosure(s)

      Upload to FTP site

Plan Review

Staff will review plans and/or perform a site inspection to determine what backflow protection may be required. New service permits will not be issued until we've received the signed Project Letter.

  • Plan review will require a New Service application.
  • Plan review will be performed within 20 working days.
  • Backflow prevention assemblies must be approved by WaterOne.
  • If WaterOne requirements and municipal plumbing code should conflict, the more stringent requirement prevails.


Contact Cross-Connection Control at 913/895-1815.

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Test reports may be e-mailed (preferred) or faxed to Cross-Connection Control:

Fax: 913/895-1822

Mailing Address:

Attn: Cross-Connection Control
10747 Renner Blvd.
Lenexa, KS 66219


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