Alabama Water Resources Conference Perdido Beach, Alabama Mac Underwood, General Manager BWWB BIRMINGHAM WATER WORKS BOARD Sustainability of Water Supply for the Metro Birmingham Area September 5, 2007

Outline of this Presentation… 1. Existing BWWSB System 2. Management of the 2006/2007 Drought 3. Long Range Water Resource Planning

Outline of this Presentation… 1. Existing BWWSB System 2. Management of the 2006/2007 Drought 3. Long Range Water Resource Planning

We are Among the 40 Largest Water Utilities in the Nation Largest water utility in Alabama Largest water utility in Alabama Supply water to over 650,000 people (approximately 15% of the State of Alabama) Supply water to over 650,000 people (approximately 15% of the State of Alabama) We produce in excess of 100 MGD of drinking water We produce in excess of 100 MGD of drinking water 31 MGD of raw water provided to Industrial customers 31 MGD of raw water provided to Industrial customers

Our Intakes are in the Black Warrior and Cahaba Basins 4 Raw Water Intakes 4 Water Treatment Plants

Our Intakes are in the Black Warrior and Cahaba Basins Reliable Withdrawal is 176 MGD Average Day Demand is 134 MGD MGD to Treatment Plants - 31 MGD to Industry (raw water customers) Cahaba River Pump Station Source Capacity Appears Adequate through 2023 or 2035 (Depending on Future Service Area)

The Board has 4 Water Filtration Plants Total Treatment Capacity is 179 MGD Max Day Historical Demand is 167 MGD Shades Mountain 80 MGD Western 55 MGD Putnam 24 MGD Carson 20 MGD Treatment Capacity Adequate through 2010

Outline of this Presentation… 1. Existing BWWSB System 2. Management of the 2006/2007 Drought 3. Long Range Water Resource Planning

2006/2007 has been a Near-Record Drought!

Our 2007 Rainfall Deficit is 18 Inches!

We are in Stage 3 of our Drought Management Plan Stage 1: (April 10th) Stage 2: (May 10th) Stage 3: (June 7th) Stage 3 Highlights Mandatory Restrictions 2-tiered surcharge above 12 CCF per month Hand watering only (2 days per week) No watering on Wednesday, Saturday, Sunday

Our Inland Lake Reservoir is Approximately 67% Full

Our Lake Purdy Reservoir is Also Approximately 67% Full

We Manage Each of our Sources Conjunctively 4 Raw Water Intakes 4 Water Treatment Plants

Our Ability To Do So This Year has Been Hampered by Bromide Levels in the Warrior River

On October 27, 2006 ADEM Notified us That Jasper’s Consecutive Systems were Experiencing DBP Problems… The source of the problem was an industrial discharge into the Riley Maze Treatment Plant in Arab Alabama. The source of the problem was an industrial discharge into the Riley Maze Treatment Plant in Arab Alabama. We had to shut down our Mulberry Intake until the issue was resolved in late May. We had to shut down our Mulberry Intake until the issue was resolved in late May. This significantly impacted our ability to control lake levels as the drought developed this spring! This significantly impacted our ability to control lake levels as the drought developed this spring!

Our Challenges Are to Manage the Reservoir Levels in the Face of the Extended Forecast!

“This all adds Impetus to our Long- Range Water Resource Planning”

Outline of this Presentation… 1. Existing BWWSB System 2. Management of the 2006/2007 Drought 3. Long Range Water Resource Planning

Projected Population Change Service Population is projected to grow between 43% and 63% by 2075!

2005 – 2075 RPCI Population Projections (Adjusted) for Existing and Potential Future Service Areas

Existing and Potential Future Service Areas

Existing and Potential Service Area Total Average Daily Demand

Future Supply Shortfall for Both Service Area Scenarios

“BWWSB plans to augment its supply by up to 50 MGD by 2025!”

Finding and Implementing Solutions

Potential Water Supply Alternatives New Source in the Black Warrior Basin New Source in the Tennessee River Basin New Source in the Coosa River Basin New Source in the Black Belt Groundwater Local Quarries Aquifer Storage and Recovery Water Reuse / Recycling – for Industrial Customers Increased Capacity at Lake Purdy Conservation

Questions?