CONTENTS1. INTRODUCTION...................................................................................................................... 1-11.1 OBJECTIVE OF THIS MANUAL..................................................................................................... 1-11.2 BACKGROUND .......................................................................................................................... 1-21.3 REGULATORY CONTEXT............................................................................................................ 1-31.3.1 Total Coliform Rule ....................................................................................................... 1-31.3.2 Surface Water Treatment Rule........................................................................................ 1-31.3.3 Interim Enhanced Surface Water Treatment Rule........................................................... 1-41.4 EPA/STATE JOINT GUIDANCE ON SANITARY SURVEYS ............................................................... 1-61.5 RATIONALE FOR SANITARY SURVEYS......................................................................................... 1-61.5.1 Goal of a Sanitary Survey ............................................................................................... 1-61.5.2 Benefits of a Sanitary Survey.......................................................................................... 1-72. PLANNING THE SURVEY ...................................................................................................... 2-12.1 DETERMINATION OF OUTSTANDING PERFORMANCE.................................................................... 2-12.2 REVIEW OF PERTINENT FILES ON PHYSICAL FACILITIES .............................................................. 2-22.2.1 Previous Sanitary Survey Reports................................................................................... 2-22.2.2 Water System Plans........................................................................................................ 2-22.2.3 Water System Schematic/Layout Maps........................................................................... 2-32.2.4 Project Reports............................................................................................................... 2-62.2.5 Construction Documents ................................................................................................ 2-72.2.6 Water Source Information .............................................................................................. 2-72.2.7 Source Protection Information ........................................................................................ 2-82.3 REVIEW OF PERTINENT FILES ON WATER QUALITY................................................................... 2-102.3.1 Monitoring Plans.......................................................................................................... 2-10