AWWA ACE61645

Metcalf & Eddy recently developed a computerized distribution system model for the Metropolitan District Commission (MDC) in Hartford, Connecticut. In order to account for the variations in demand, the system was divided into twelve demand zones roughly corresponding to the pressure zones with larger zones subdivided based on additional geographical factors. Large users and un-metered usage were considered separately. Each demand zone was characterized by a unique demand pattern and seasonal multiplier. A system-wide water budget was utilized to aid calibration and track total hourly demands in each demand zone while maintaining the overall system demand. Utilizing this model, M&E conducted a thorough analysis of the MDC's system and developed a program of improvements to address system deficiencies. Includes figures.