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WINTER STORM EVENT BRIEFING Water Forward Task Force | April 14th , 2021 System Overview System Map Event Overview Critical 48-hour period Begin Freeze (Approximate) End Freeze (Approximate) 350 300 250 200 150 ) D G M ( 100 50 0 y a D r e p s n o l l a G n o i l l i M / ) G M ( s n o l l a G f o s n o i l l i M 2/10/2021 2/12/2021 2/14/2021 2/16/2021 2/18/2021 2/20/2021 2/22/2021 2/24/2021 2/26/2021 2/28/2021 Storage Pumpage Usage Storage Loss AW Incident Command activated 2/17 @7am SWB Outage 2/16 @10 PM System Peak Hourly 330 MGD 2/17 @ 9 AM SWB Boil Water Notice Issued 2/17 @ 11AM Citywide Boil Water Notice 2/17 @ 8:30 PM End Freeze (Approximate) Ullrich Power Outage 2/17 @ 2PM Ullrich at pre-shut down flowrate 2/18 @ 1AM Ullrich Startup 2/17 @ 5:30 PM 2/15/21 12:00 AM 2/17/21 12:00 AM 2/19/21 12:00 AM 2/21/21 12:00 AM 2/23/21 12:00 AM Storage Pumpage Usage 350 300 250 200 150 ) D G M ( 100 50 0 y a D r e p s n o l l a G n o i l l i M / ) G M ( s n o l l a G f o s n o i l l i M System Recovery Central Zone Boil Water Notice lifted 2/22 AM @ 5:30AM North, South, NWA zones Boil Water Notice lifted 2/22 @ 4:30PM Emergency Water Use Restrictions lifted 2/24 @ 8AM 350 300 250 200 150 ) D G M ( 100 50 0 y a D r e p s n o l l a G n o i l l i M / ) G M ( s n o l l a G f o s n o i l l i M Citywide Boil Water Notice lifted 2/23 @ 11:45AM 2/22/21 12:00 AM 2/23/21 12:00 AM 2/24/21 12:00 AM 2/25/21 12:00 AM 2/26/21 12:00 AM 2/27/21 12:00 AM 2/28/21 12:00 AM Storage Pumpage Usage Leak/Break Timeline Begin Freeze End Freeze D C F E H I A - Lake Creek 42" Break B - Texas Plume SSO C - SWB Low Pressure D - Peak Hrly Usage E - SWB BWN F - Ullrich Power Outage G - Minimum Storage H - Citywide BWN I - Ullrich @ Pre-shutdown Flowrate J - Central Zone BWN Lifted K - North, South, NWA BWN Lifted L - Citywide BWN Lifted M - Emergency Water Use Lifted J K L M 350 300 250 200 150 100 50 s k a e r B f o r e b m u N / s k a e L f o r e b m u N B 0 0 2/10/21 2/11/21 2/12/21 2/13/21 2/14/21 2/15/21 2/16/21 2/17/21 2/18/21 2/19/21 2/20/21 2/21/21 2/22/21 2/23/21 2/24/21 2/25/21 2/26/21 2/27/21 2/28/21 0 1 2 1 2 2 1 7 3 G 17 30 23 26 12 7 5 6 # Leaks # Main Breaks Storage (MG) Pumpage (MGD) Usage (MGD) 350 300 250 200 150 100 50 n o i l l i M / ) G M ( s n o l l a G f o s n o i l l i M ) D G M ( y a D r e p s n o l l a G A 3 Preliminary Demand Overview Communications Activities  Social Channels Monitoring & Response  Media Coordination  Warn Central Texas / Customer Portal Notifications  Operational Updates and Interactive Map  FAQ’s and Language Translations  Online Forms / Outbound Calls Bill Relief  Rate Reduction  Monthly Fee Reduction  Bill Adjustments  Wastewater Averaging  Emergency Cut-off Fees Waived Bill Relief  Estimated Reads reads  Meter read data review averaging adjustments  Wastewater Average • February/March bills based on estimated reads • March/April bills based on actual reads beginning March 19 • Residential rates reduced temporarily to mitigate high bills resulting from catch up • Review of actual reads to proactively apply leak adjustments and wastewater • Estimated consumption will apply to wastewater averaging calculation to mitigate wastewater average concerns Other Relief  Emergency Home Repair Program • Committed $1 million for emergency plumbing repairs  Plus 1 Payment Assistance Funding • Providing additional $5 million in residential payment assistance funding Community Recovery  Plumbing Repair Coordination  Public Water Stations  Bulk Water Hauling Distribution  Fixed Location Tank  Water Totes (275-gallon) Distribution Next Steps  Enterprise Resiliency Strategic Initiatives  After Action Report Questions and Discussion Water Forward Task Force | April 14th , 2021