Case Study: Public Utility District #1 of Whatcom County (PUD Whatcom) ensures reliable power and water with Tenable Networks' Tenable.ot

Washington State Public Utility Ensures Reliable Power and Water to Constituents with Tenable OT Security

Public Utility District #1 of Whatcom County (WPUD) is a countywide electric and water utility that supplies about 27 MW and 5.4 billion gallons of water annually. As WPUD modernized substations and water plants, increased IT/OT connectivity raised the risk of remote, local and insider cyberattacks and created a need for full visibility into controller changes and continuous packet capture—limitations that their previous open-source tools couldn’t address.

WPUD deployed Tenable.ot to provide automated asset tracking, continuous packet capture, policy-based detection and a detailed audit trail. The solution delivered complete visibility and version control of controllers, faster troubleshooting through continuous network captures, fewer false alerts via configurable policies, and stronger readiness against threats—giving engineers clearer control and greater peace of mind.

PUD Whatcom

Paul Siegmund

Manager of Automation and Technology Services