Urban Water Infrastructure CE 572 - Analysis of Urban Water Systems Larry A. Roesner, Ph.D., P.E. Fall 2008

The Urban Water Infrastructure System Treatment plant Supply Distribution system Collection system Drainage system Reuse Disposal Treatment plant

The Water Supply Infrastructure System Treatment plant Supply Distribution system Collection system Drainage system Reuse Disposal Treatment plant

Water Supply Issues Raw water -> Finished supply Dependable supply now and tomorrow Where, how much, quality,cost Conservation Distribution system System expansion Maintenance Water quality at point of use Security

The Wastewater Infrastructure System Treatment plant Supply Distribution system Collection system Drainage system Reuse Disposal Treatment plant

Wastewater Issues Collection Systems Wastewater Treatment Plants Planning for future growth Maintenance of existing system Untreated overflows (CSOs, SSOs) Wastewater Treatment Plants Effluent limits on discharges Wet weather by-passing Future growth

The Urban Runoff Infrastructure System Treatment plant Supply Distribution system Collection system Drainage system Reuse Disposal Treatment plant

Runoff Issues Flood protection (local and downstream) Discharge water quality Maintenance Drainage infrastructure Water quality issues

But who’s thinking about the “water system” ?? Most municipalities have independent departments for water, wastewater, and stormwater For some, collection/distribution systems is a separate department Integrated management is difficult Green Infrastructure and Sustainable Communities 17-9

The Pre-Urban Water Balance Undeveloped RAIN RUNOFF INFILTRATION 40% Evapotranspiration 50 % 10 % Green Infrastructure and Sustainable Communities 17-10

Effect of Urban Development Developed RAIN RUNOFF INFILTRATION POTABLE WATER 35% Evapotranspiration 25 % 30 % WWTP SSOs/CSOs Green Infrastructure and Sustainable Communities 17-11

Overview of Course Readings Applications lectures Project report for each modeling exercise Class presentations of project findings

Course Topics Holistic analysis of an urban water system Wastewater reuse Graywater reuse Xeriscaping vs. bluegrass System infrastructure management issues Water supply system analysis Water age Security Sanitary sewer overflow problem RDII Analysis of alternatives for remediation Combined sewer overflow problem Stormwater quality and treatment

Meeting Time