The financial obligations of the Regional Stormwater Management Program, which includes not only the regulatory compliance portion but also the stormwater infrastructure needs within the Boroughs, are significant. The annual/monthly fee was determined by evaluating the budgetary needs of each Borough and evaluating the number of IAUs in each community.
A tier structure was established to group like properties into five different Tiers based on the impervious area of a parcel (2,480 square feet of impervious area representing 1.0 Impervious Area Unit). Each Tier has a specific range of impervious area and an associated IAU or billing unit. Tiers 1 through Tier 4 capture the majority of parcels. Tier 5 includes parcels with 6,000 square feet or more of impervious area