Five drinking water utilities participated in pilot projects to design, implement, and operate SRSs as part of EPA’s Water Security Initiative (WSI) program. A number of reports were developed during and after these projects to document the status of the overall SRSs and their individual components.

Note: WSI documents refer to “Contamination Warning Systems (CWSs),” a term that has since been replaced by “Water Quality Surveillance and Response Systems (SRSs).”

• Summary of Implementation Approaches and Lessons Learned from WSI Program
• Utility-specific Approaches for SRS Implementation
  • Greater Cincinnati Water Works
  • Philadelphia Water Department