City Council has implemented a new priority of Energy efficiency and Carbon mitigation city wide. The Water department is the biggest municipal energy user, and the Council has asked the department to become less energy intensive and find ways to improve the overall efficiency of the water system. Through the Water & Energy Resiliency program we will be addressing this opportunity while ensuring our water quality and level of service.
The program identifies the following priority areas:
- Pump Station Optimization
- Micro Hydro and Renewables
- Net Zero Buildings
- Streetlight LED Conversion
- Source Selection and Management
- Leak Detection and Unaccounted for Water Identification
- Financing and Additional Funding Opportunities
SUCCESSES TO DATE
COMPLETION OF THE WATER SYSTEM OPTIMIZATION STUDY
With the completion of the Water Optimization Study and the SCADA replacement project, we are now able to identify a monthly water and energy optimization plan, and analyze data in real time to adjust as necessary to maximize efficiency and minimize water quality upset or unacceptably low tank levels.
SUBSCRIBER SOLAR PURCHASE
Public Utilities accounted for the majority of the Subscriber Solar blocks purchased from Rocky Mountain Power. The purchase will provide 900,000 kWh of renewable energy annually, roughly 11% of the department's total electricity usage.
- Water Smart Customer Interface
- Smart Controller rebate program
- Rain Barrel partnership with Utah Rivers Council
- Partnership with Weber Basin Water Conservancy District
- Conservation Rates - year round conservation pricing
PUMP STATION OPTIMIZATION
- Water System Optimization Study completed
- Rate schedules for individual pump stations are complete
- Operator education on off peak pumping has been completed
- Controls and Variable Frequency Drives (VFD) have been in installed
- Implemented off peak pumping plan
- Flow paced pumping for VFD pump stations implemented
MICRO HYDRO AND RENEWABLES
- Subscriber solar program was created and credits have been purchased
- Solar panels will be installed on the Creekside Water Treatment Plant this fall as part of the Park Meadows and Divide Well reconstruction project
- Onsite solar is being evaluated on a case by case basis
NET ZERO BUILDINGS
- American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) Building Audits Complete
- Quinns Junction Water Treatment Plant optimization underway. This includes LED installation, HVAC system upgrades, solar wall installation, efficient high service pump installation and the addition of batch tank heaters.
STREETLIGHT LED CONVERSION
- Streetlight conversion is 70% complete
- Streets Division has replaced 740 lights with LEDs
LEAK DETECTION AND UNACCOUNTED FOR WATER IDENTIFICATION
- Residential Water Meter Replacement Pilot Program is underway. Randomly selected residential meters have been tested for accuracy; preliminary results are positive and indicate most of these meters are within AWWA standards for accuracy.
- Non-Residential Meters: Replaced almost all 3" and larger meters that are more than 10 years old over the past 4 years. Moving focus to replacement of 2" meters.
- System Control and Data Acquisition (SCADA) system has been updated to allow for better control and more information allowing for increased leak detection.
- Advanced Metering Infrastructure (AMI) is the backbone data collection system for customers and provides the City with hourly data on consumption. This data is fed to the WaterSmart system, and will be paired with the SCADA system in the future to increase leak detection.
FINANCING AND ADDITIONAL FUNDING OPPORTUNITIES
- Projects eligible for Rocky Mountain Power Customer Rebate Program on the CIP projects list have been identified
- Coordinating with Sustainability to submit projects