Storm Water Billing

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Most SD1 bills reflect charges for two different services: sanitary sewer and storm water. The storm water fee supports projects to reduce sewer overflow and water pollution caused by rainwater runoff. For more information on the sanitary sewer fee, please click here.

Storm water runoff occurs when precipitation from rain or snowmelt flows over the ground. Impervious surfaces like driveways, sidewalks, pavement, rooftops and parking lots prevent storm water from naturally soaking into the ground.

Storm water is a leading cause of waterway pollution. When it rains, contaminants such as oil, salt, litter, soil, fertilizer, chemicals, debris, dirt and pesticides are washed into nearby storm drains. Most of these drains empty directly into the streams and rivers that we use for fishing, swimming, boating and recreating.


Click the image to download a PDF version of the When It Rains, It Drains brochure.


SD1, at the direction of local leaders and with the help of citizen focus groups, developed a Regional Storm Water Management Program in 2003 to comply with US Environmental Protection Agency storm water regulations, operate and maintain the public storm sewer systems and protect our waterways from polluted storm water runoff.

Click here to learn more about storm water or download a PDF version of the When It Rains, It Drains brochure here.

The storm water fee applies to all properties, including schools, churches and local governments located within SD1's storm water service area as defined by the Kentucky Division of Water (KDOW), regardless of whether or not they receive sanitary sewer service from SD1. Properties classified as agricultural or unimproved may be exempt from the storm water fee.

Residential Storm Water Fees

SD1 calculates the residential storm water charge using a very specific impervious area formula that is widely used and accepted by storm water utilities across the nation. Based on a statistical analysis of residential properties in Boone, Campbell and Kenton counties, it was determined that the average impervious area per property is 2,652 square feet.

SD1 used this figure to designate an equivalent residential unit (ERU) equal to 2,600 square feet. All residential properties (defined as detached single-family homes and duplexes on a single parcel) are charged a flat monthly fee of $5.04 per ERU.

For complete list of SD1's residential rates and fees, click here.  

Non-residential Storm Water Fees

Non-residential property owners are billed monthly based on the number of ERUs represented by the impervious area of the property.

For example, a property that contains 26,000 square feet of impervious surface equates to 10 ERUs and would be billed a monthly fee of $50.40. 

Monthly Non-Residential Customers:

26,000 square feet/2,600 square feet = 10 ERUs 
10 ERUs x $5.04 = $50.40 

Non-residential customers that receive their storm water bill on a quarterly basis would be charged three times this amount.

Quarterly Non-Residential Customers:

26,000 square feet/2,600 square feet = 10 ERUs 
10 ERUs x $5.04 = $50.40 
$50.40 x 3 months = $151.20

For complete list of SD1's non-residential rates and fees, click here

Non-residential property owners may reduce their storm water fee by implementing storm water controls that address a combination of peak volume and/or water quality impacts. To download a PDF of SD1's Storm Water Management Credit Policy, click here.

SD1 storm water credits may be applied retroactively for up to one year if all applicable criteria are met. To download the Storm Water Fee Credit Application, please click here, and return the completed the form to:

    Andy Aman, Environmental Compliance Administrator 
    1045 Eaton Dr.
    Ft. Wright, KY 41017

Services Provided With Storm Water Fee Revenue

The revenue created from the storm water surcharge is used to fund the Regional Storm Water Management Program, which includes:

  • Operation and maintenance of the public storm sewer system.
  • Upgrades to and replacement of the existing storm water infrastructure.
  • Identification and elimination of improper connections that illegally dump wastes directly to rivers and streams.
  • Plan review and inspection of construction sites to ensure storm water requirements are met during and after construction, including erosion protection and sediment control measures, storm water detention requirements and post-construction water quality best management practices.
  • Implementation of storm water curricula in over 60 Northern Kentucky schools.


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