Stormwater Utility Fee 

Stormwater Utility Fee Rates
Residential Properties - Detached single-family homes, a duplex, or a manufactured home located on an individual lot or parcel.

Tier 1 Total impervious area less than 2,000 square feet - $39.12 annually

Tier 1 Illustration

Tier 2 Total impervious area between 2,000 and 3,999 sq. ft. - $81.00 annually

Tier 2 Illustration

Tier 3 Total impervious area 4,000 sq. ft. or more - $162.24 annually

Tier 3 Illustration
Other Residential Properties - Individually owned town homes and condominiums are billed at the Residential Tier 1 rate annually, $39.12.

Nonresidential Properties - Parcels that contain more than two residential units, public/private institutional buildings, commercial buildings, parking lots, churches, etc.

$6.75 monthly per Equivalent Residential Unit (ERU) of impervious area

1 Equivalent Residential Unit (ERU) = 2,400 sq. ft. of impervious area

A survey using statistical regression analysis determined that the average amount of imperious area on a residential lot within the City of Durham was 2,400 square feet.


Stormwater Utility Fee Map
Please visit the Stormwater Utility Fee Map to get an interactive view of impervious surface areas used in calculating your stormwater utility fee.

The GIS Billing Data Group maintains over a 1/2 Billion square feet of impervious surface area. This map is for stormwater billing purposes only.  Due to development and demolition, impervious areas recorded may not always align perfectly with the image shown.  New satellite imagery is received daily and impervious surfaces are added accordingly.

The Stormwater Utility Fee
To keep the NPDES Permit, the City of Durham & Residents must fund the following:

- Managing the stormwater drainage system
- Eliminating illegal dumping
- Tracking our water quality
- Enforcing the 
city’s stormwater ordinance,
- Jordan Lake Nutrient Management Rules
Falls Lake Nutrient Sensitive Waters Management Plan
Total Maximum Daily Load requirements for Third Fork Creek and Northeast Creek

These program requirements all have their cost. The federal government requires the city to designate a steady source of funds to cover these costs. As with other such expenses, the city has to pass the cost of providing these services on to its residents (this is allowed by State of North Carolina regulations).


How Fees Are Used


The stormwater utility fee generates approximately $14 million annually. This money is used for activities such as:
  • Keeping our roads clean (street sweeping, litter control, and dead animal removal)
  • Maintaining, cleaning, and repairing the public drainage system that helps protect lives and property from flooding
  • Running the household hazardous waste collection program
  • Inspecting commercial and industrial facilities to make sure they comply with the city’s stormwater ordinance
  • Reviewing and permitting stormwater controls like retention ponds and other best management practices
  • Complying with federal and state requirements related to stormwater and water quality
  • Monitoring local water quality and running an illicit discharge identification and elimination program
  • Stream restoration projects that help protect our local waterways
  • Educating residents about preventing stormwater pollution