POTABLE REUSE THE ALTERNATIVE WATER SUPPLY. Florida Section WateReuse Association November 9, 2015 Chuck Drake, PG

POTABLE REUSE CONCEPT Drinking Water Treatment Wastewater Treatment/ Reclaimed Water Water Purification Plant Consumer RIBs, Injection Wells Reclaimed Water System

MULTIPLE BENEFITS OF REUSE  Assist in meeting MFLs and avoiding cost of much more expensive AWS  Meeting ocean outfall requirements  Current and future reclaimed water supplies offer potential for direct and indirect potable reuse to meet these demands  SJRWMD DWSP and CFWI lists IPR/ DPR as viable options to meet future demands

SJRWMD WATER SUPPLY PLAN  Projected increase in total water demand= 314 MGD (additional 300 MGD in CFWI)  Fresh groundwater deficit = 250 MGD  Conservation can reduce demand by MGD for all type water uses, conservation won’t get us there  Reuse potential 277 MGD Regions 1,2,4,5  Opportunity exists to meet future demands with direct potable reuse and conservation

REUSE IN FLORIDA  Aquifer Recharge City of Orlando and Orange County Drainage Wells MGD, stormwater/ lake overflow  700 mgd reuse for all type uses leading the nation!  Reclaimed water  Conserv II in Orange County RIBs  City of Altamonte Springs AFIRST stormwater/ reclaimed water

CFWI WATER SUPPLY PLAN 6  Reclaimed water projects,  Estimated capital cost of $452 million to deliver 121 MGD  $3.48/ gal capital  Could deliver 121 mgd (potentially 165 mgd with supplemental sources) of projected increase in reuse flows, further offsetting the groundwater deficit.  Brackish groundwater/ surface water projects at $8.80/ gal

OPPORTUNITIES AND ECONOMICS OF DIRECT POTABLE REUSE*  Estimated “all-in” costs to produce water at the treatment facility  DPR / IPR $2.51- $6.14/ 1000 gallons ($820-$2000/ acre-ft)  Seawater Desal $4.60- $7.15/ 1000 ($1500-$2330/ acre-ft)  Brackish groundwater $2.85-$3.95/ 1000 gal ($930-$1290/ acre-ft) *WRRF PROJECT 14-08

OTHER AWS PROJECT COSTS  Punta Gorda 4 MGD RO Plant and Wellfield  $4.14/ 1000 gallons  City of Clearwater 3 MGD Indirect Potable Reuse Plant and Wells  $4.58/ 1000 gallons  Orange County CA 70 MGD Ground Water Replenishment System  $2.72/1000 gallons (treatment and distribution) $2.29/ 1000 treatment  Cost to retrofit for reclaimed water / septic tanks $15,000-$20,000 per lot  $66/ gal - $88/ gal capital

Orlando/ Orange County CONSERV II 1.75 Miles Orlando

PUBLIC OUTREACH PROGRAM  City Council & Elected Officials  Environmental Advisory Board  Pilot Plant Tours  Utility Customer Communications  HOAs  Community Groups  Professional Society Meetings & Conferences  USF Graduate Seminar

ACTION  Work with legislators and FDEP to make statutory changes to allow or not prevent DPR  Use lessons from CA and TX so that Florida is a leader in IPR/DPR  WMDs should participate in funding of demonstration projects  Start calling wastewater treatment plants WATER treatment plants and permit them as such

POTABLE REUSE THE ALTERNATIVE WATER SUPPLY. Florida Section WateReuse Association November 9, 2015 Chuck Drake, PG

Direct Potable Reuse- THE ALTERNATIVE WATER SUPPLY. 29th Annual Environmental Permitting Summer School July 7-10, 2015 Chuck Drake, PG