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AMI (Advanced Metering Infrastructure) is the latest in metering technology used by water agencies across the United States and internationally to provide more accurate, up-to-the-moment water use information.
In contrast to MMWD’s standard meters which are typically read every two months, AMI systems automatically provide more frequent reads. This enhances our ability to detect leaks and provide customer support, while also making it easier for customers to manage their water use and their water bill. AMI can also help protect water quality by detecting reverse flows on a water meter and alerting district staff of potential backflow contamination.
MMWD’s AMI Pilot Project—funded by over $2 million in grants from the California Department of Water Resources—is installing AMI endpoints in multiple phases. The first began in early 2018, with the installation of AMI endpoints at 710 dedicated irrigation meters throughout our service area. These are primarily large landscape customers (parks, golf courses, HOAs, schools, businesses) who can benefit from being able to easily monitor irrigation water use at multiple locations.
The second phase of the project, also completed in 2018, included 1,250 select households in the Tiburon-Belvedere area. This area was chosen for the pilot because it offers a good mix of concentrated customers and topography to allow us to evaluate the benefits of AMI for residential customers.
The next phases of the project will be rolled out in 2020 and cover installation of an additional 2,000 residential meters throughout our service area.
For the pilot project, we selected neighborhoods based on a variety of factors including topography, water pressure zones, distribution system age and potential for leaks, and landscape size. By including a cross section of different neighborhoods in the pilot project, we’ll be better able to evaluate the benefits of AMI for our customers.
No, there is no charge for either the AMI technology or the EyeOnWater app.
Yes, AMI is as safe as cell phones, laptops, bluetooth devices and similar equipment. The AMI technology MMWD is installing transmits water use data once per day via cellular signal from your water meter box. The signal strength is equivalent to sending a text message.
Yes, AMI is as safe as cell phones, laptops, bluetooth devices and similar equipment. The AMI technology MMWD is installing transmits water use data up to four times per day via cellular signal from your water meter box. The signal strength is equivalent to sending a text message.
In addition to the cellular signal, the endpoint also transmits a very short message at very low power signal (broadcasting at 10milliwatt, 10mW is less than half of the 25mW allowed by the FCC) approximately 5 times each minute. The purpose of this is a mobile (drive-by) backup that can be use if the cellular option is temporarily not working. Under typical operation, the endpoint transmits reading data for seconds per day meaning that the endpoint transmits as little energy as a brief cell phone call. The endpoints self-regulate their output power to use the least amount needed to reliably communicate with the network. The maximum power does not exceed the limit set by the FCC.
Yes, the data transmitted from your meter is encrypted and includes only meter flow information. No billing or personal information is transmitted.
Yes, you can opt out the AMI pilot project by simply calling the Water Efficiency Department at 415-945-1520 to notify us of your choice. Before opting out, please consider the multiple benefits associated with AMI, including enhanced leak detection and water monitoring abilities, likely to save you water and money.
For additional questions, contact the Water Conservation Department at 415-945-1520.