There are two steps in calculating the stormwater fee for a commercial property:
Step 1: Determine the number of Equivalent Residential Units
ERU: Equivalent Residential Unit
SFCustomer: Square footage of customer’s property
SFERU: Size of a typical single-family residential property in Titusville; approximately 0.25 acres or 11,000 square feet
IDFCustomer: (0.95 multiplied by the impervious area) + (0.10 times the pervious area). Approximately 95% of the rain that falls on the impervious areas of your property (hard surfaces such as driveways and rooftops) will become stormwater runoff and 10% of rain that falls on the pervious areas of your property (grassed or landscaped areas) will become stormwater runoff
IDFERU: 0.30. Approximately 30% of the rain that falls on typical single family residential property becomes stormwater runoff
Step 1 Formula
Number of ERU’s is equal to: (SFCustomer divided by SFERU) multiplied by (IDFCustomer divided by IDFERU).
Step 2. Multiply the Number of ERU’s by the Annual Charge Per ERU
Fiscal Year 2023 Stormwater Fee is equal to: (Number of ERU’s) times ($99.26 per ERU).