Fee Lookup Tool

This online Fee Lookup Tool allows you to search for your property and obtain a detailed record of information on your Clean Water Act Fee (CWAF), for example:
  • The breakdown of the fee components (the Administrative Fee, Impervious Area Fee, and total fee).
  • The amount of impervious surface area charged to the property (in Equivalent Service Units, 1 ESU = 2,465 square feet).
  • The Tier designation (e.g., Tier 1, 2, or 3 for residential; “Direct Measure” of impervious area for other types of uses).
  • The property’s assigned zoning classification (e.g., R-R for rural residential).
  • The state’s Assessor Zone Code or AZC*, which indicates (in most cases) how the property is being used, e.g., industrial, farm, commercial.

Reduction Calculator

The Fee Lookup Tool can also be used as a fee reduction calculator to estimate various hypothetical fee reductions based on adding best management practices to treat stormwater runoff.

If you do not have access to the Internet, or need help with the online tool, contact the Stormwater Management Division at 301-883-5833 for assistance.

Note: the Assessor Zone Codes are used as the basis for the CWAF when the zoning does not relate to the direct use of the property. For example, a property zoned R-80 (tier 2 residential) may actually be used as a commercial lot. This property would have an AZC of 005 which indicates that the use of the property is commercial. For CWAF purposes, the property would then be directly measured for impervious area rather than falling under the residential tier 2 category.