Critical Infrastructure

Community Water Systems

Community Water Systems (CWS)

As part of ISO’s Public Protection Classification (PPC™) program, our work with local municipalities includes a careful comparison of the amount of available water with the amount needed to extinguish fires. We assess all components of a local water-supply system — including pumps, storage, and filtration — and the condition and maintenance of hydrants. We even observe hydrant fire-flow tests at various locations to determine the rate of flow the water mains provide.

ISO conducts this evaluation using our Fire Suppression Rating Schedule (FSRS). The FSRS includes detailed procedures for assessing a community’s:

  • water supply
  • fire department
  • communications infrastructure

By classifying a community’s ability to suppress fires, ISO provides crucial information for understanding the entire landscape of risk associated with specific properties.

The FSRS incorporates nationally accepted standards developed by such organizations as the National Fire Protection Association (NFPA) and the American Water Works Association (AWWA). When those organizations update their standards, the ISO evaluation changes as well.

You can learn about ISO’s methods of assessing water supply by ordering the FSRS here.  

Follow the link to Community Fire Protection to get more information on municipal fire-protection efforts and fire suppression.