Contents

1. Message from the General Manager
2. Questions About Your Water?
3. Continuous Monitoring Ensures Continued Excellence
   1. Pasadena’s Water Supply
   2. Drinking Water Contaminants
   3. Water Quality
4. Information About Water Quality & Your Health
   1. Federal and State Regulations that Impact Health & Water Quality
      1. Important Health Information
      2. Fluoride
      3. Hardness
      4. Nitrates
      5. Lead and Copper
      6. PFAS
   2. Drinking Water Source Assessments
   3. Save Water
   4. Water Quality During the Eaton Fire
5. Understanding the Water Quality Chart
   1. Maximum Contaminant Level (MCL):
   2. Maximum Contaminant Level Goal (MCLG):
   3. Public Health Goal (PHG):
   4. Maximum Residual Disinfectant Level (MRDL):
   5. Primary Drinking Water Standard (PDWS):
   6. Maximum Residual Disinfectant Level Goal (MRDLG):
   7. Detection Limits for Purposes of Reporting (DLR):
   8. Treatment Technique (TT):
   9. NA:
   10. n/a:
   11. ND:
   12. Action Level (AL):
   13. Units of Measurement:
6. City of Pasadena 2025 Groundwater and MWD Treated Surface Water Data
7. City of Pasadena Water Distribution System
8. City of Pasadena Water Distribution System - Lead and Copper Levels at Residential Taps
9. Federal Unregulated Contaminants Monitoring Rule (UCMR 5)
10. Behind the Tap: How Water Gets to You
    1. Imported Water
    2. Local Water
11. Important Information