2017 Proposed Stormwater Fee

Hillsborough County’s Stormwater Program provides for the maintenance, rehabilitation, and construction of the public stormwater conveyance and storage systems to address:

  • Safety – elimination of flooding on County roadways based on a 25 year storm event. These projects include the replacement of failed pipes and improved roadway drainage systems by cleaning/grading, adding pipes, and rerouting drainage.
  • Asset Preservation – routine inspections, maintenance, rehabilitation and replacement of infrastructure; repair of structures, replacement of failing pipes, slip-lining and routine cleaning.
  • Regulatory Compliance – response to Federal and State requirements and standards by maintenance and system improvements in surface water detention and retention, treatment, education/outreach, inspections and monitoring/reporting; includes programs such as Adopt-a-Pond, Adopt-a-Stream, outreach to schools and other organizations.

Our residents benefit by having reduced flooding of roadways and improved surface water quality. In addition to reduction of flooding, projects implemented through the County’s stormwater program directly contribute to improved water quality in fresh water wetlands and the improved water quality of Tampa Bay.

Stormwater Program Funding

The Stormwater Program relies on two primary sources of revenue: 

  • the Unincorporated Ad Valorem Assessment, utilized for maintenance and operations, 
  • the Stormwater Utility Assessment (Stormwater Fee), used to fund capital projects and respond to regulatory activities.

Historically, the Ad Valorem and Stormwater Assessments have been leveraged with non-reoccurring supplemental funding to include:

  • Community Development Block Grants (CDBG)
  • Cooperative Funding Agreements with the Southwest Florida Water Management District
  • (SWFWMD)
  • Florida Department of Environmental Protection Grants
  • Federal Emergency Management Agency Grants
  • Community Investment Tax (CIT)

2017 Proposed Stormwater Fee Adjustment

Hillsborough County is considering an increase to the Stormwater Utility Assessment (Stormwater Fee) that all property owners in unincorporated Hillsborough County pay annually so that flooding problems in the county can be fixed in a more timely manner to protect lives and reduce damage to roads and property. The increased revenue will be used to repair and replace culverts that have been identified as high-risk, as well as for increased stormwater system maintenance.

Frequently Asked Questions

Why is the increase being proposed?

The Stormwater Fee was adopted by the BOCC in 1991 and was increased for the first time since its inception in 2015. Hillsborough County’s stormwater needs have outpaced revenues over the last 23 years, even with periodic infusions of increased Ad Valorem and Community Investment Tax revenues and State and Federal grants supplementing the annual Stormwater Fee. The current backlog of stormwater needs includes culvert repair and replacement projects, neighborhood drainage improvement projects, and regional watershed projects identified through watershed studies. This backlog continues to grow annually.

Who can I call to discuss this increase?

Questions regarding the proposed assessment can be addressed with Hillsborough County Public Works at (813) 635-5400.

What period of time does the annual assessment cover?

The Stormwater Utility Assessment period is January 1 through December 31 (calendar year) and is assessed in arrears (toward the end of the calendar year the assessment covers).

What is the current assessment for my property?

The assessment varies depending on the type of property. See below for current rates:

  • Residential: $30.00
  • Apartment / Condominium / Townhouse / Mobile Home: $15.00 per dwelling
  • Agricultural: $30.00
  • Commercial / Industrial: $.025 per 1.5 square feet of impervious area

How much of an increase is being proposed?

The proposed increase to the Stormwater Utility Assessment is a 20% increase for 2017. Hillsborough County is also proposing to set a maximum allowable assessment rate for future years, with an additional 20% increase. This increase will not become final unless approved by the BOCC in 2018, or another future year. See below for proposed rates:


  • Residential: $36.00
  • Apartment / Condominium / Townhouse / Mobile Home: $18.00 per dwelling
  • Agricultural: $36.00
  • Commercial / Industrial: $.03 per 1.5 square feet of impervious area

Maximum future years

  • Residential: $42.00
  • Apartment / Condominium / Townhouse / Mobile Home: $21.00 per dwelling
  • Agricultural: $42.00
  • Commercial / Industrial: $.035 per 1.5 square feet of impervious area

Are there any discounts for senior citizens, non-profit organizations, or churches?

No discounts are available for this assessment.

If my property contains a retention pond, swales or if my property does not flood will I still be assessed?

Yes, the Stormwater Utility Assessment funds drainage projects throughout Hillsborough County to improve shared public facilities. These projects include the replacement of failed pipes, improvement to roadways drainage systems, and water quality improvement projects and programs.

What if the number of dwellings on my notice is incorrect? 

Contact the Property Appraiser office if there are any discrepancies regarding the number of dwellings for which you are being charged. The public hearing is to consider only increasing your current assessment rate.

When is the hearing to adopt the fee?

A public hearing to consider this increase is scheduled August 16, 2017, at 10 a.m. in the 2nd floor Board Room at the County Center, 601 E. Kennedy Blvd. in downtown Tampa. All affected property owners have the right to appear at the public hearing and the right to file written objections within 20 days of the notice mailed to each property owner.  Written objections can be submitted by mail to Stormwater Management Assessment Objections, Stormwater Management, Hillsborough County, P.O. Box 1110, Tampa, FL, 33601; or in person to the Public Works Department, 22nd floor at the County Center, 601 E. Kennedy Blvd. in downtown Tampa.