Impervious surface is a hard surface on a property that does not allow rain to soak into the ground. This includes, but is not limited to, rooftops, carports, driveways, garages, walkways, storage sheds, parking lots, and patios.
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A stormwater utility fee is a legally authorized public enterprise fund, adopted by ordinance, and is similar to a water or sewer utility. It is a dedicated funding source for Town stormwater management program activities with a focus on water quality.
The Town of Apex began collecting the stormwater utility fee on January 1, 2022. The fee appears in the Apex utility customer’s monthly bill alongside water, sewer, electricity and solid waste services.
Customers are billed monthly. This fee is on the same bill for water, sewer, electric, and solid waste services. If you do not receive a monthly utility bill from the Town, you will receive a separate bill on a quarterly basis for the stormwater fee.
All owners or tenants of property within Town limits pay the fee. Tax exempt organizations also pay the fee since their property contains impervious surface. Properties with 400 square feet (sf) or less of impervious surface are not subject to the fee. Properties outside of the Town’s corporate limits are also not subject to the fee.
Impervious surface is the most accurate way to estimate the amount of polluted water (stormwater) that flows off a property and into our pipes and streams during a rain event. The more hard surface area on a property, the more stormwater runoff that is produced. Because of this, the fee is higher for properties with larger impervious surfaces.
The fee provides a dedicated funding source for Town stormwater operations, including:
This fee does not cover drainage issues or flooding on private property.
The amount of impervious area on your property is determined through the use of a geographic information system (GIS), aerial photos, and satellite imagery. To view impervious area on your property, please visit the Stormwater Utility Fee Map.
All developed non-residential parcels and large residential customers (including commercial, office/institutional, churches, apartment complexes, etc.) are charged a fee based on the Equivalent Residential Unit (ERU). The ERU is the average impervious surface on residential properties in Apex. Through a GIS analysis, the average impervious surface is 2,700 square feet. This unit is a baseline for monthly rates for non-residential properties.
Take a look at the construction permit for your property. The permit will list the impervious surface. This impervious surface may differ from final as-built impervious area, but will serve as a good estimate.
Stormwater, drinking water, sewer, electric and solid waste services are all on the same utility bill. If you do not pay this bill, the Town of Apex may shut off other utilities like drinking water or electricity.
The stormwater utility fee is assessed on all properties within Apex corporate limits regardless of tax status. However, you may appeal your charge if you feel one of the following applies:
Click here to access the online appeal form
The stormwater utility fee is not charged by the amount of rain that falls or property tax value. The fee is based on the amount of runoff potentially created by impervious surface on the property. It is similar to fees paid for water/sewer service, trash collection, or electricity.
Please contact Apex stormwater staff at stormwaterfee@apexnc.org for any further questions you may have on the fee.