1. Drought Response A Utility Perspective 2002 NECPUC Symposium June 17, 2002 Peter Galant Vice President Engineering & Utility Operations Aquarion Water Company of Connecticut

2. Presentation Overview n Aquarion Water Company of Connecticut n 2002 Drought –Impacts –Response n Observations n Summary

3. Aquarion Water Co. of CT n 170,000 customers n 587,000 people n 35 cities/towns n 25 systems Salisbury Lakeville North Canaan Norfolk Cornwall Kent Litchfield Beacon Falls Oxford Seymour Monroe Easton Weston Stratford Trumbull Shelton Ridgefield Wilton New Canaan Norwalk Darien Stamford Greenwich Glen Cove Glenwood Landing Sea Cliff Glen head Old Brookville Rosyln Harbour Westport Fairfield Bridgeport

4. Cumulative Rainfall Stamford System

5. Reservoir Capacity Stamford System

6. Response - Conservation DROUGHT PHASE AlertAdvisory Emergency I Emergency II Emergency III CONSERV. GOAL None Voluntary 10% Mandatory 15% Mandatory 20% Mandatory 60%

7. Conservation Impact Stamford System

8. Predicted Capacity

9. Statistical Analysis

10. Systems Affected Differently n Geography n Ground Water vs. Surface Water n Reservoir Storage/Watershed Area n Margin of Safety

11. Response Plans are Different n Triggers –% Capacity n Constant n Monthly –Days Storage Remaining n Risk

12. Response Plan Comparison Aquarion data based on March 1

13. Restrictions are Different

14. Summary n Droughts effect systems differently n Systems have different risk tolerances n Towns have different use restrictions n Impacts on water allocation planning