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AWWA ACE58148
- Regional Conjunctive Use of Groundwater, ASR, and Surface Water - a Renewed Focus for Reliability and Reduced Vulnerability
- Conference Proceeding by American Water Works Association, 06/15/2003
- Publisher: AWWA
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The "mining" of groundwater by excessive withdrawals has caused a newregulation in eastern North Carolina mandating reductions in groundwaterwithdrawal. This regulation sets new ground by not only capping withdrawals,but actually mandating dramatic reductions up to 75% of capacity and explicitlyaddressing the benefits of aquifer storage and recovery (ASR) by allowing the storage filling step to creditagainst a utility's groundwater withdrawals.This paper presents a case study of a utility that is pursuing conjunctive use ofgroundwater and surface water supplies and possible future ASR application forincreased capacity, reliability, and cost-effectiveness. Conjunctive use ofdifferent quality supplies requires considerations of water quality issues such asblending, corrosion control, and disinfection byproduct control. These issues areevaluated and presented along with capacity, reliability, and cost-effectivenessfindings. Includes figures.