The City of Marysville along with Backflow Solutions, Inc. (BSI) manages our Backflow Prevention program. The intent of this program is to protect the public water system from any potential cross contamination.


Backflow devices are required on all industrial and commercial accounts and any account that has an irrigation system. It is the city’s responsibility to ensure that devices are installed where needed, that annual testing is being conducted, and that all documents are properly filed according to Ohio EPA standards.

Testing Reminder Notices

BSI will send out notices to those who utilize a Backflow Prevention device reminding of the required testing. The results of the test must be documented and submitted (online) to BSI as required.

Failure to Comply

Failure to comply with the program may result in termination of service.

Backflow Solutions, Inc. (BSI) Information

Backflow Solutions, Inc. or BSI Online is North America's leading cross-connection control/backflow data management and program administration firm. BSI helps water purveyors by sending notifications, assists with customer service inquiries, and manages required data on behalf of the City of Marysville.

The City of Marysville has contracted with BSI Online to assist with State required cross-connection/backflow tracking regulations. BSI Online will serve as the primary point of contact for the program.