Changes Coming to MWRD CSO Notifications

We are updating the technology behind our Combined Sewer Overflow (CSO) notification system starting June 17, 2025.

To continue receiving CSO notifications, current subscribers must re-register.

This change does not affect Overflow Action Day Alerts.

Sign up to receive CSO notifications

CSO notifications are available via both email and SMS/text.

CSO map data is available at our Combined Sewer Overflow Reporting page