(TLP:CLEAR) WaterISAC – EPA: National Security Information Sharing Bulletin – Q4 2025
Created: Tuesday, November 25, 2025 - 10:47
Categories: Cybersecurity, Federal & State Resources, Physical Security, Security Preparedness
Summary: WaterISAC and EPA have released the latest quarterly edition of the National Security Information Sharing Bulletin (ISB), developed for water and wastewater utilities. Each issue focuses on key security and resilience topics, including cybersecurity, physical security, and natural disasters.
The heightened threat environment continues to drive an elevated operational risk to water and wastewater utilities across the all-hazards threat landscape, including cyber threats, physical security risks, and natural hazards. This issue highlights the risk of weaponized supply chains and the potential impact to critical infrastructure operations. It also provides guidance on enhancing the cybersecurity of operational technology systems and best practices for strengthening your utility’s supply chain resilience.
The ISB is a joint effort by the EPA Office of National Security and WaterISAC, with support from the EPA Office of Water and the Water Sector Coordinating Council. It aims to raise awareness and promote security and preparedness across the water and wastewater sector.
Original Source: Access the Information Sharing Bulletin below.
Related WaterISAC PIRs: 1 – 12