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Northern Illinois Backflow Services

Servicing commercial & residential customers

Northern Illinois Backflow, Inc. provides installation and certification of various types and sizes of backflow prevention assemblies. We currently service Northern Illinois counties of Cook, Will, DuPage, Kane and Lake.

NIB maintains test results of all on-site inspections on our computerized database for easy reference. We also refer to this information to contact you in sufficient time to ensure your annual test is never late.

New Installation / Consultation

Our certified technicians will come out and assess the situation and suggest the best possible configuration to get your backflow device installed.


Backflow devices are tested to ensure proper operation should there be a backflow condition. Devices are required to be tested annually with results on site as well as provided to local water authorities.


Should your device not pass testing it will need to be repaired. Our certified repair technicians will have you up and running in no time.


Ask about our Backflow Device Maintenance Program which includes all necessary repairs as well as annual testing.

Automated Reminders

With our automated reminder system let Northern Illinois Backflow let you know when its time for your next test.

  • Send test reports to your local municipality for you
  • Follow-up two to three weeks before your next annual test date
  • Guaranteed compliance with state, local and EPA law