Under the Safe Drinking Water Act, water utilities are responsible for more than direct operation and maintenance of their systems. Other responsibilities include monitoring, public notification for violations of regulations, record keeping, and provision of necessary facilities supplies, personnel and operating vigilance to assure continuous delivery of safe drinking water. In addition, utilities must demonstrate consistent compliance with the requirements of the primary drinking water regulations established under the Safe Drinking Water Act. Water supply management is noticeably most complex for today's public officials. This guide provides information to help define the scope of problems faced by water utility managers and presents information to assist in the resolution of these problems.