Transcript Document

Renewable Water Resource for the Future
League Annual Conference
Phoenix/August 19-22
Water Plan 2000-2050
(2012 Update)
• We are purchasing and storing our entire CAP
allocation of 144,172 acre-feet per year
• We are continuing to plan for and implement
programs to fully utilize our renewable water
resources
• Recycled water is an important resource to diversify
our renewable water supply portfolio
Water Production for TW Service Area (Acre-Feet)
Transition to Renewable Supplies
140,000
120,000
Total Potable Water Use at 1989 Level
Reclaimed Water
100,000
80,000
CAP
60,000
40,000
Groundwater Pumping at 1959 Level
20,000
Pumped Groundwater
0
1940
1950
1960
1970
1980
1990
2000
2010
2013
Year
Potable Production
CAP Production
Reclaimed Production
Potable Water Use - Projection to 2050 with Shortage
260,000
240,000
Volume (Acre-Feet)
220,000
200,000
?
180,000
160,000
140,000
120,000
100,000
Colorado River Water
80,000
60,000
2020
2025
2030
2035
2040
2045
2050
Year
Combination of Renewable and Finite Water Supplies
Banked Colorado River Water
Potable Demand @130 GPCD
* The population data was provided to TW by United States Census Bureau
2012 Water Plan Update
Recommendations
• Limit groundwater pumping at sustainable levels by
using renewable resources
• Continue water conservation programs and “wet”
water resource management as a part of the overall
sustainable water strategy
• Fully utilize Recycled Water for future supply
Goals of the Recycled Water Program
• Fully use the City’s recycled water entitlement for the
benefit of Tucson Water customers
• Collaborate with Mayor & Council, Tucson Water
customers, and other stakeholders on recycled water
issues and investment decisions
• Maintain Tucson Water’s commitment to the
Conservation Effluent Pool to benefit the local
environment
Recycled Water:
A New Vocabulary
• Recycling water for 30 Years as “Reclaimed Water”
– Reclaimed Water- Treated wastewater with additional
filtration. Not suitable for drinking
– Potable reuse: Purification of treated wastewater for
drinking water
• Direct Potable Reuse (DPR): Purified water goes directly into
drinking water system
• Indirect Potable Reuse (IPR): Purified water goes through
environmental buffer before introduction to drinking water
system.
National Water Research Institute
(NWRI) Independent Advisory Panel
Dr. Shane Snyder (Chair), Chemist/Toxicologist
U of A – Chemical & Environmental Engineering
Dr. Anne Browning-Aiken, Public Policy
U of A – Udall Center
Dr. Ian Pepper, Microbiologist
U of A – Soil, Water & Environmental Science
Michele Robertson, Hydrologist
Montgomery and Associates
Ron Wildermuth, Public Outreach / Water Utility Representative
West Basin MWD, Manager of Public and Government Affairs
Dr. Jorg Drewes, Treatment Engineer
Colorado School of Mines
Bob Hultquist, Water Reuse Regulatory Criteria
Independent Consultant, Former CDPH
Recycled Water Master Plan
Recommendations
• Continue to invest in the Reclaimed
Water System to maintain efficient
service to existing and potential
future customers
• Pursue full utilization of the City’s
recycled water entitlement through
indirect potable reuse (IPR) to
diversify renewable supplies
Why Recycle Now?
• Long Term Planning: Development of water supplies
for the future
• Drought: Cutbacks in deliveries of CAP Water
• Community Investments:
– $250 Million – Storage and Recovery of CAP Water
– $600 Million – Wastewater Improvements
– $25 Million – Purchase of CAP Allocation (FY15)
Recycled Water Program
• Purified water will continue to meet or exceed
drinking water standards
• Positive steps towards full utilization of the recycled
water resource as part of the urban water cycle
• Continuous coordination with the City’s leadership
and community
• Periodic review and update to reflect industry
trends and changing conditions
Implementation Timeline
Recycled Water Is:
• Integral to Tucson Water’s continuous planning for
resource reliability
• Locally-controlled, renewable resource
• Supported by past and future significant community
investments
• Available to supplement Tucson’s water supply and
support the City’s commitment to the environment
The Recycled Water Program charts a
course for reuse implementation