Stormwater Utility Fee Estimator

View the Fee Estimator Map

The Stormwater Utility billing unit, or Equivalent Residential Unit (ERU), is 2,400 square feet of impervious area (IA). This is the median IA on Arlington County residential parcels.

In February, Arlington County Manager Mark Schwartz proposed the Calendar Year (CY) 2026 Stormwater Utility rate at $268 per ERU. The County Board will adopt both the Stormwater Utility rate and County budget in April. Your Stormwater Utility fee is calculated by the number of ERUs on your property multiplied by the Stormwater Utility rate. Note that the utility fee is based on a cost recovery model, so it is dependent upon the adopted budget each year.

Pursuant to Section 54.1-402 of the Code of Virginia, any determination of topography or contours, or any depiction of physical improvements, property lines or boundaries on the Webmap is for general information only and shall not be used for the design, modification, or construction of improvements to real property or for flood plain determination.