Backflow Testing

Backflow Testing Requirements General Information

  • All backflow test results must be entered by the tester or the testing company online in City of Blaine’s online permitting system, iMS.
  • All backflow testers and/or rebuilders must register their license with the City of Blaine to perform backflow testing within the city.
    • This is a personal/individual registration that must be completed by the license holder with their own personal account information. A plumbing company cannot register for their employee. This registration must be completed before test results performed by that employee can be entered. See Backflow Tester Registration Help (hyperlink please) for step-by-step directions to register.  
    • Annual Renewal Contact information is a required field on all test results submittals. This contact is the owner or property manager of the property that will be contacted in the future if the device passes the expiration date. Do not enter the testing company’s information in this contact field.
  • Backflow testing must be completed.

How to Enter Backflow Test Results

  1. After October 5, 2020
  2. Before October 5, 2020

Visit, login, and follow these steps:

  1. Enter the permit # into the "Goto Record #" in the top blue banner.
    Goto Record #
  2. Select the "Manual Actions" button that looks like a lightning bolt.

  3. Toggle on the "Add Backflow Assembly" and select "Execute".
    Select Action - Add Backflow Assembly
  4. A new test result application screen will appear. Follow the prompts adding the:
    •  Device information
    • Test Results
    • Annual Renewal Contact
    • Tester Contact
    • Testing Company Contact
  5. Make sure to select "Submit" once you get to the summary screen.

Backflow Tester Step by Step Registration Help

City of Blaine - Backflow Testing iMS Registration

Registering is a two-step process. First create an account and then after your iMS account is setup, add your backflow licensing to that new account. 

You will need to upload a copy of your license during registration. If you do not have a digital copy available, access this online system with a smart phone or tablet and you will be able to take a picture of the license to upload it during the license application process. 

Please follow the steps below to register as a backflow tester/rebuilder:

  1. Visit and select on Step 2.
    Contractor Licensing and Registration
  2. Select “Create An Account” and follow the prompts to create your iMS account. Step by step directions can be found here at
    caution-icon-40x40Important: Please enter your personal information, name, address, phone, and email; not your employer’s information. This registration is for your personal license you hold with the state.
    Contractor Licensing and Registration - Create a Pro Account
  3. After your iMS account has been activated, you have confirmed your personal contact information, and you have logged back into iMS, Select "+License/Registration" found under the Contractor Licenses tile. If you cannot find this, please visit, Select Step 2, and then Select "Create a Pro Account".

  4. Enter your personal information on the Company Information screen.
    Company - City License/Registration
  5. Select either Backflow Prevention Rebuilder or Backflow Prevention Tester.
  6. Enter the required fields according to your license type.
    State Licenseer your personal information again on the Applicant Contact Information section.
    Contact Information - City License/Registration

  7. Upload required license(s).

    Computer View
    Upload Backflow Prevention Rebuilder License
    Smart Phone/Tablet View
    (allows you to take a picture to upload your license)
    Mobile View - Upload Backflow Prevention Tester License
  8. After the upload, you will be asked to read and accept an Indemnification Agreement and Tennessen Warning.

  9. Then you will see the Application Summary screen. Use this to check everything you entered is correct and if so, select “Submit” at the bottom of the application page. 

Once your application is reviewed and if approved, you will receive an email stating that it was approved. If your application needs more information, you will receive an email requesting more information.

You will only need to update your licensing information within this system when your state license expires.