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www.globalbigdataconference.com
Twitter : @bigdataconf
Karen MillsFinance Director
Town of Cary
Advanced Meter
Infrastructure
4
• Towns of Cary and Morrisville, RTP, RDU
• Peak Day Demand of 29.02 mgd
• 67,000 meters– Water, Irrigation and
Reclaimed Water
• Pit sets at the curb• 70% residential• Culture of Conservation
– Program started 1996– Tiered Water Rates– Realized GPCD reduction
5x8 / 3x4
1" 1.5" 2" 3" 4" 6"0
10,00020,00030,00040,00050,00060,000
Number of Meters
5
Before Aquastar – Walking routes, visual read, handheld data entry
Meter Reading via Aquastar Infrastructure
2 Way Water Meters Regional Collectors
Town Servers
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Fixed Network
Radio Coverage Provides
Hourly Meter Reading
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Cost Benefit Analysis X 3
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- Invest $18 Million
+ Benefit $28 Million over 17 Years
Bottom Line Net Benefit: $10 Million
Investment: Technology
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Investment: 60,000 Metersand Installation
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Investment: Regional Collectors
Antenna:11’ tall
Base Units:– 5’ High– 3’ Wide– 2.5’ deep
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Investment: Communications Plans– Goals, Objectives & Strategy– Tactics– Target Publics– Spokespersons– Key Messages & General
Facts– Activities (Logos, Hotline,
Door hangers, Events, Video, etc)
– Budget – Timeline
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Investment: Staff Time & Stress
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Savings – Meter Reading
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Savings – Meter Maintenance
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Savings - Worker Safety
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1 Worker’s Comp claim for a trip and fall: $40K
Green: Smaller Fleet, Less Fuel
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70,000 miles/year off the road
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RNI – Raw Meter Data
CIS
Sys
tem
- N
aviL
ine
MDM – Processed Read Data
SAS – Analytical Tables C
usto
mer
Por
tal
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Policy/Program Evaluation
Customer Service
Town Code Enforcement
Data Use Policy
Policy/program Evaluation• Aggregate compliance with Alternate Day
Watering ordinance; impact of changes
• Extent of code violations, in aggregate (unpermitted irrigation, minimum housing)
• Project to right-size meters
• Rate structures (time of use, peaking)
• Feasibility of absentee homeowner management of water use
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• Low income special leak detection monitoring
• Development fee structure (peak day use act. vs est.)
• Feasibility of senior citizen or other unusual pattern monitoring
• Feasibility of fire suppression system monitoring for theft detection
______________________________________________________________________________________________________________
_________________________________________
Policy/program Evaluation
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Public Health and Safety Protection
• Set and monitor Water Shortage Response Plan Stage III and Rationing water use levels
• ID systems without required backflow prevention (residential irrigation, commercial)
• Reclaimed water use during annual reclaimed holiday
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Town Code Enforcement• Alternate Day Watering• Rain Sensor Ordinance• Water Waste Ordinance• Water Shortage Response
– Verify field observation– Confirm complaints
– Replace field observation25
Wise water use increases water supply reliability which could delay or eliminate next water treatment plant expansion
______________________________________________________________________________________________________________
_________________________________________
Expansion from 40 to 56 mgd
Water Conservation
With conservation/reuse: just under 50% chance no expansion
needed for buildout/206050% chance expansion needed
about 2032
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Understanding the System - Before
3/28/2
012
4/27/2
012
5/27/2
012
6/26/2
012
7/26/2
012
8/25/2
012
9/24/2
012
10/24/2
012
11/23/2
012
12/23/2
012
1/22/2
013
2/21/2
013
3/23/2
013
4/22/2
013
5/22/2
013
6/21/2
013
7/21/2
0130123456789
10111213141516171819202122232425
Daily Potable Water Use and ProductionCary + Morrisville + RTP
CAWTF Net Cary
Pota
ble
Wat
er (M
GD
)
Which customers and what uses cause max day?
How much is commercial vs. residential?What are peaks in each pressure zone?How much is unaccounted for daily?
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Understanding the System Now
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Understanding the System Now
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Understanding the System Now
“Guaranteed” Sales by Customer Class
______________________________________________________________________________________________________________
_________________________________________
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1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
0
10
20
30
40
50
60
70
80
90
6975 76 73 72 73 72 70 67 66 67 65 64
5955 57 57 54
Gal
lons
per
Day
/Cap
ita
Average Annual Weather-Adjusted Residential Water Use
Annual average of daily values:Total census block daily use
Census block population
Who/where are lows/highs?
Understanding the System Now
Transformational!!! Customer Service Becomes Proactive*
*Most not quantified for cost/benefit analysis
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Aquastar Customer Service*
• High Usage monitored• Continuous flow monitored• Highest quality billing• Customer Call center service• Same day customer starts and stops* Most not quantified for cost/benefit analysis
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Catching Leaks
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Tracking Results
Self Serve, PLEASE!
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Customer Web Portal
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Self Subscribed Email and Text Alerts
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Questions?
Karen Mills, CPAFinance Director 919-469-4110
