Understanding Your Utility Bill
To pay your utility bill online, please click here.
The following are definitions of the services commonly found on a City of Mercer Island Utility bill:
- Conservation Surcharge - A fee based on water consumption of single family residences. The fee was designed to encourage responsible water use and to help pay for a conservation education program.
Emergency Medical Services – A fixed charge intended to provide funding for emergency medical aid response by Mercer Island Firefighters. For the classifications of single family residential, multi-family residential, business/commercial, public schools, and public/other classifications, the rates will be charged on a bi-monthly basis, per equivalent service unit (ESU). New customers in the residential board and care and 24-hour nursing home classifications will be charged based on the average calls per unit for their classification until they have established their own call history.
- King County Sewage Treatment – A direct cost for the treatment and transport of sewage waste from Mercer Island to a King County Waste Water Treatment Facility. This is a fixed charge for single family residences and a consumption based charge for multi-family and commercial accounts.
- Meter Charge - A fixed charge based on the size of the water meter. This charge supports services such as reading the water meter, meter repair, utility billing and collection, and customer service.
- Sewer Line Maintenance – A charged based on CCF of water consumed used to supports current and future maintenance of sewer infrastructure on Mercer Island.
- Storm Drain – A fixed charge covering the cost of controlling surface water and maintaining and improving the storm drainage system.
- Water Consumption - The amount of your actual water usage, based on a bi-monthly meter reading. Consumption is billed in increments of 100 cubic feet (CCF). Every 100 CCF equals to 748 gallons.
Click here to view the current bi-monthly utility rates.
The City has financial assistance programs for low income families as well as individuals who are both Medicaid-eligible and receiving in-home nursing care services.
For Additional information please contact Utilities Billing at 206-275-7783.