Water Meter Replacement Project

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The City of Mercer Island is investing in new tools to serve water customers better. In2024, the City replaced all residential and commercial water meters with digital meters that are part of an advanced metering infrastructure (AMI) system.

Before the replacements, approximately 70 percent of the meters on the City’s water distribution system were over 15 years old. As meters age, they can become less accurate and only measure some of the water that is actually used. Meters of this age are also more likely to leak, wasting valuable water. Replacing mechanical meters results in improved accuracy and enhanced leak identification.

The new water meters will automatically transmit data wirelessly to the City through the AMI system, reducing the need for manual meter reads. Customers will be able to manage water use wisely in the new online portal. Features include trackable water usage, leak alerts, and other notifications. Please note that due to a delay in the deployment of data collection stations, the launch of the customer portal has been delayed as well. Once the portal has been launched, customers will be notified about how to access their account and water use information.

Mercer Island has contracted with Ferguson Waterworks and VertexOne to complete this essential work.

Have a question? Check the FAQs section, or ask it below!


Graphic adapted from How AMI Works (EPA.gov)

The City of Mercer Island is investing in new tools to serve water customers better. In2024, the City replaced all residential and commercial water meters with digital meters that are part of an advanced metering infrastructure (AMI) system.

Before the replacements, approximately 70 percent of the meters on the City’s water distribution system were over 15 years old. As meters age, they can become less accurate and only measure some of the water that is actually used. Meters of this age are also more likely to leak, wasting valuable water. Replacing mechanical meters results in improved accuracy and enhanced leak identification.

The new water meters will automatically transmit data wirelessly to the City through the AMI system, reducing the need for manual meter reads. Customers will be able to manage water use wisely in the new online portal. Features include trackable water usage, leak alerts, and other notifications. Please note that due to a delay in the deployment of data collection stations, the launch of the customer portal has been delayed as well. Once the portal has been launched, customers will be notified about how to access their account and water use information.

Mercer Island has contracted with Ferguson Waterworks and VertexOne to complete this essential work.

Have a question? Check the FAQs section, or ask it below!


Graphic adapted from How AMI Works (EPA.gov)

Questions & Comments

City staff will answer questions as quickly as possible. Please be aware that responses may take up to one week - we appreciate your patience.

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  • Share When will the customer portal for water meter readings be available? on Facebook Share When will the customer portal for water meter readings be available? on Twitter Share When will the customer portal for water meter readings be available? on Linkedin Email When will the customer portal for water meter readings be available? link

    When will the customer portal for water meter readings be available?

    Mike10 asked 26 days ago

    City staff is currently working to get the customer portal up and running!  We know this is an important component for many residents who want to track and manage their water use. Unfortunately, getting this system activated has taken longer than expected. At this time, we're anticipating an early summer rollout, but we will keep this site updated as we prepare to launch the portal.

    In the meantime, if you have questions about water use or utility bill at your home or business, please reach out to our Utility Billing team. They can be reached at 206.275.7602, Monday through Friday, 8:30 am to 4:00 pm. 

  • Share My avg water consumption is markedly up. While some of that may be explained by the new, I am still concerned about a leak. What can I do? on Facebook Share My avg water consumption is markedly up. While some of that may be explained by the new, I am still concerned about a leak. What can I do? on Twitter Share My avg water consumption is markedly up. While some of that may be explained by the new, I am still concerned about a leak. What can I do? on Linkedin Email My avg water consumption is markedly up. While some of that may be explained by the new, I am still concerned about a leak. What can I do? link

    My avg water consumption is markedly up. While some of that may be explained by the new, I am still concerned about a leak. What can I do?

    Sean Dunphy asked 5 months ago

    Thanks for reaching out! We may be able to look at your use in more detail and provide clarity on current water use. Please contact the Utility Billing Team at 206-275-7602, Monday through Friday, 8:30 am to 4:00 pm.

  • Share They replaced the water meter today at my house. I see that the new meter has no numbers on it. I used those numbers to test for leaks. I could note the numbers down and leave for a day, then come back. If the numbers were the same, then I knew I had no leaks. This new meter has no numbers that I can access or see. So how can I assess if I have a leak? on Facebook Share They replaced the water meter today at my house. I see that the new meter has no numbers on it. I used those numbers to test for leaks. I could note the numbers down and leave for a day, then come back. If the numbers were the same, then I knew I had no leaks. This new meter has no numbers that I can access or see. So how can I assess if I have a leak? on Twitter Share They replaced the water meter today at my house. I see that the new meter has no numbers on it. I used those numbers to test for leaks. I could note the numbers down and leave for a day, then come back. If the numbers were the same, then I knew I had no leaks. This new meter has no numbers that I can access or see. So how can I assess if I have a leak? on Linkedin Email They replaced the water meter today at my house. I see that the new meter has no numbers on it. I used those numbers to test for leaks. I could note the numbers down and leave for a day, then come back. If the numbers were the same, then I knew I had no leaks. This new meter has no numbers that I can access or see. So how can I assess if I have a leak? link

    They replaced the water meter today at my house. I see that the new meter has no numbers on it. I used those numbers to test for leaks. I could note the numbers down and leave for a day, then come back. If the numbers were the same, then I knew I had no leaks. This new meter has no numbers that I can access or see. So how can I assess if I have a leak?

    MS asked about 1 year ago

    To check for a leak, you can do so the same way you did before. First, make sure that all water sources are off in your home: no dishwasher, washing machine, irrigation, etc. Then go to your meter box, lift the lid, and open up the white dial from the middle. You will see a digital display. Watch it for about 2 minutes.  If you see numbers changing/registering, it is likely that you have a leak somewhere on your property. If water is moving through the meter, you will also see a circle with a “+” sign in it. If you have any questions about your water bill or water use, please contact Utility Billing at 206.275.7602.

  • Share How do I know if I currently have a leak? My water bill is very high this month and we have no way to assess if we have a leak with the new digital meter (and no online portal yet). on Facebook Share How do I know if I currently have a leak? My water bill is very high this month and we have no way to assess if we have a leak with the new digital meter (and no online portal yet). on Twitter Share How do I know if I currently have a leak? My water bill is very high this month and we have no way to assess if we have a leak with the new digital meter (and no online portal yet). on Linkedin Email How do I know if I currently have a leak? My water bill is very high this month and we have no way to assess if we have a leak with the new digital meter (and no online portal yet). link

    How do I know if I currently have a leak? My water bill is very high this month and we have no way to assess if we have a leak with the new digital meter (and no online portal yet).

    barbrar asked 8 months ago

    Great question! While we work to get the remainder of the AMI base stations installed and the customer portal running, some Islanders will be able to get information from our Utility Billing team about hourly water use by calling 206.275.7602.  

    Please note: Not all water meters on the island are able to be transmit data to the AMI system yet, and as a result, some residents/businesses will not have access to hourly water use until all base stations are operational.  Regardless, we always recommend calling our Utility Billing team if you have a question about a potential leak or abnormally high bill.

  • Share I got a note “could not flush air out from hose line” and my hose doesn’t work. How do I fix this? on Facebook Share I got a note “could not flush air out from hose line” and my hose doesn’t work. How do I fix this? on Twitter Share I got a note “could not flush air out from hose line” and my hose doesn’t work. How do I fix this? on Linkedin Email I got a note “could not flush air out from hose line” and my hose doesn’t work. How do I fix this? link

    I got a note “could not flush air out from hose line” and my hose doesn’t work. How do I fix this?

    DNR asked 9 months ago

    Please contact our Customer Service Team right away so we can address this issue!  You can reach us at 206.275.7600, Monday through Friday from 8:30 am to 5 pm .

  • Share It has that "applicants shall provide to the city an affidavit signed by a licensed RF engineer stating that the proposed installation is compliant with applicable federal RF regulations. It is all very well coming out with a Record of Decision which states that there are no environmental impacts, but this is supposed to be stated by a licensed RF engineer. I did not know that Alaine Sommargren and Ryan Harriman are "licensed RF Engineers" when did they become licensed RF engineers?: It has: "Electromagnetic radiofrequency emissions. The city recognizes that the Federal Telecommunications Act of 1996 gives the Federal Communications Commission sole jurisdiction in the field of regulation of radio-frequency (RF) emissions and WCFs which meet FCC standards shall not be conditioned or denied on the basis of RF impacts. As part of a complete application under this chapter, applicants shall provide to the city an affidavit signed by a licensed RF engineer stating that the proposed installation is compliant with applicable federal RF regulations." Where can one find the signed Affidavit by the RF engineers that this is compliant? Please post. Thanks. on Facebook Share It has that "applicants shall provide to the city an affidavit signed by a licensed RF engineer stating that the proposed installation is compliant with applicable federal RF regulations. It is all very well coming out with a Record of Decision which states that there are no environmental impacts, but this is supposed to be stated by a licensed RF engineer. I did not know that Alaine Sommargren and Ryan Harriman are "licensed RF Engineers" when did they become licensed RF engineers?: It has: "Electromagnetic radiofrequency emissions. The city recognizes that the Federal Telecommunications Act of 1996 gives the Federal Communications Commission sole jurisdiction in the field of regulation of radio-frequency (RF) emissions and WCFs which meet FCC standards shall not be conditioned or denied on the basis of RF impacts. As part of a complete application under this chapter, applicants shall provide to the city an affidavit signed by a licensed RF engineer stating that the proposed installation is compliant with applicable federal RF regulations." Where can one find the signed Affidavit by the RF engineers that this is compliant? Please post. Thanks. on Twitter Share It has that "applicants shall provide to the city an affidavit signed by a licensed RF engineer stating that the proposed installation is compliant with applicable federal RF regulations. It is all very well coming out with a Record of Decision which states that there are no environmental impacts, but this is supposed to be stated by a licensed RF engineer. I did not know that Alaine Sommargren and Ryan Harriman are "licensed RF Engineers" when did they become licensed RF engineers?: It has: "Electromagnetic radiofrequency emissions. The city recognizes that the Federal Telecommunications Act of 1996 gives the Federal Communications Commission sole jurisdiction in the field of regulation of radio-frequency (RF) emissions and WCFs which meet FCC standards shall not be conditioned or denied on the basis of RF impacts. As part of a complete application under this chapter, applicants shall provide to the city an affidavit signed by a licensed RF engineer stating that the proposed installation is compliant with applicable federal RF regulations." Where can one find the signed Affidavit by the RF engineers that this is compliant? Please post. Thanks. on Linkedin Email It has that "applicants shall provide to the city an affidavit signed by a licensed RF engineer stating that the proposed installation is compliant with applicable federal RF regulations. It is all very well coming out with a Record of Decision which states that there are no environmental impacts, but this is supposed to be stated by a licensed RF engineer. I did not know that Alaine Sommargren and Ryan Harriman are "licensed RF Engineers" when did they become licensed RF engineers?: It has: "Electromagnetic radiofrequency emissions. The city recognizes that the Federal Telecommunications Act of 1996 gives the Federal Communications Commission sole jurisdiction in the field of regulation of radio-frequency (RF) emissions and WCFs which meet FCC standards shall not be conditioned or denied on the basis of RF impacts. As part of a complete application under this chapter, applicants shall provide to the city an affidavit signed by a licensed RF engineer stating that the proposed installation is compliant with applicable federal RF regulations." Where can one find the signed Affidavit by the RF engineers that this is compliant? Please post. Thanks. link

    It has that "applicants shall provide to the city an affidavit signed by a licensed RF engineer stating that the proposed installation is compliant with applicable federal RF regulations. It is all very well coming out with a Record of Decision which states that there are no environmental impacts, but this is supposed to be stated by a licensed RF engineer. I did not know that Alaine Sommargren and Ryan Harriman are "licensed RF Engineers" when did they become licensed RF engineers?: It has: "Electromagnetic radiofrequency emissions. The city recognizes that the Federal Telecommunications Act of 1996 gives the Federal Communications Commission sole jurisdiction in the field of regulation of radio-frequency (RF) emissions and WCFs which meet FCC standards shall not be conditioned or denied on the basis of RF impacts. As part of a complete application under this chapter, applicants shall provide to the city an affidavit signed by a licensed RF engineer stating that the proposed installation is compliant with applicable federal RF regulations." Where can one find the signed Affidavit by the RF engineers that this is compliant? Please post. Thanks.

    fletchsa1 asked about 1 year ago

    Because it is not a 'macro wireless communications facility', the AMI project is not subject to the requirements of MICC 19.06.040, which contains the section noted in your questions.  However, the City (applicant) has provided a signed letter from the Principal RF Engineer at Sensus confirming that the system being implemented is designed and certified to comply with all applicable FCC Standards under CFR Chapter 47 of the FCC Rules.

  • Share All my neighbors recently had their water meters upgraded by the city, but mine appears untouched. The installers did not ring my bell either. Can you tell me if my meter has been upgraded, or if it was not required in my case? on Facebook Share All my neighbors recently had their water meters upgraded by the city, but mine appears untouched. The installers did not ring my bell either. Can you tell me if my meter has been upgraded, or if it was not required in my case? on Twitter Share All my neighbors recently had their water meters upgraded by the city, but mine appears untouched. The installers did not ring my bell either. Can you tell me if my meter has been upgraded, or if it was not required in my case? on Linkedin Email All my neighbors recently had their water meters upgraded by the city, but mine appears untouched. The installers did not ring my bell either. Can you tell me if my meter has been upgraded, or if it was not required in my case? link

    All my neighbors recently had their water meters upgraded by the city, but mine appears untouched. The installers did not ring my bell either. Can you tell me if my meter has been upgraded, or if it was not required in my case?

    Nelson Wright asked 10 months ago

    We would be happy to look up your account and give you more information!  You can reach our Customer Service Team at 206.275.7600 Monday through Friday from 8:30 am to 5 pm.

  • Share Can I apply to install the bigger water meter to 1.25” at this time? on Facebook Share Can I apply to install the bigger water meter to 1.25” at this time? on Twitter Share Can I apply to install the bigger water meter to 1.25” at this time? on Linkedin Email Can I apply to install the bigger water meter to 1.25” at this time? link

    Can I apply to install the bigger water meter to 1.25” at this time?

    de68us asked about 1 year ago

    The AMI project will add an automated transmitter to the existing meter. If the meter is too old to support the new technology, it will be replaced with the same sized meter as the property currently has. 

    If you were to apply to increase the size of your water meter, it would be handled separately from the AMI project, and it is unlikely that the timing of your permitting process would align with timing of the meter change out at your property.  

    Additionally, changing out the water service is more involved than switching out just the meter. It involves replacement of the water service line (from the meter to the main), tapping a new hole in the water main, and decommissioning the hole from the original meter. It involves a new meter setter box and the placement of a new meter (which will need to be compliant with the new radio-read technology). Most of the labor associated with this will be carried out by a private contractor hired by the homeowner. The labor will include excavation and restoration work in the street. The private contractor will coordinate work with the City, because the City Public Works Department will handle the portion of the work that touches the water main (the tap and abandonment). The contract we have with Pedal Valves does not include performing any of the additional steps required to upsize the water meter.

    In addition to the cost of the private contractor, the homeowner would incur the cost of the water service permit fees which include inspection fees, one-time connection fees made to the water purveyor (SPU/City of Mercer Island) and a labor/materials deposit to cover the portion of the work completed by the Public Works Department, and Right of Way Use (ROW) permit fees, as well.

  • Share Does the new water meter size are still 5/8” or upgrade to 3/4” or 1”? 2273 74th Ave, SE. Mercer Island. WA 98040 on Facebook Share Does the new water meter size are still 5/8” or upgrade to 3/4” or 1”? 2273 74th Ave, SE. Mercer Island. WA 98040 on Twitter Share Does the new water meter size are still 5/8” or upgrade to 3/4” or 1”? 2273 74th Ave, SE. Mercer Island. WA 98040 on Linkedin Email Does the new water meter size are still 5/8” or upgrade to 3/4” or 1”? 2273 74th Ave, SE. Mercer Island. WA 98040 link

    Does the new water meter size are still 5/8” or upgrade to 3/4” or 1”? 2273 74th Ave, SE. Mercer Island. WA 98040

    de68us asked about 1 year ago

    All water meters are being replaced like-for-like, meaning that a 5/8" meter will be replaced by the same size meter.

  • Share Hi, Now that the city will no longer need employees to read the water meters, will the city reduce rates based on the savings? on Facebook Share Hi, Now that the city will no longer need employees to read the water meters, will the city reduce rates based on the savings? on Twitter Share Hi, Now that the city will no longer need employees to read the water meters, will the city reduce rates based on the savings? on Linkedin Email Hi, Now that the city will no longer need employees to read the water meters, will the city reduce rates based on the savings? link

    Hi, Now that the city will no longer need employees to read the water meters, will the city reduce rates based on the savings?

    Eric R asked over 1 year ago

    A decrease in the number of staff supporting the operations of the Water, Sewer and Stormwater utilities is not anticipated because of the meter replacement program.  Existing staff resources dedicated to manually reading water meters will be reallocated to other utility operational needs.

Page last updated: 17 Mar 2025, 04:45 PM