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FY20 Stormwater Rate Changes

Stormwater Tiered Rate System – Effective October 1, 2019

Single-Family Properties

Effective October 1, 2019 the City of St. Petersburg has implemented a tiered billing structure for stormwater rates for single-family properties. This new tiered structure has classified single-family properties into tiers, based on the square footage of impervious surface area (surfaces that water runs off), so that a property’s fee more accurately reflects its impact to our stormwater system. In FY19, the flat fee for single-family properties was $11.00. 

FY20 Adopted Single-Family Impervious Tiers and Rates
Billing Structure Minimum Impervious Surface Area Maximum Impervious Surface Area Stormwater Billing Rate
Tier 1 1 sq. ft. 1,600 sq. ft. $4.99
Tier 2 1,601 sq. ft. 3,200 sq. ft. $9.93
Tier 3 3,201 sq. ft. 4,800 sq. ft. $15.59
Tier 4  4,801+ sq. ft.   $23.27

Non-Single-Family Properties

Non-single-family (commercial) properties will continue to be charged a fee based on the number of Single-Family Residential Units (SFRU’s) their impervious area represents. One SFRU is equal to the impervious surface area of a typical single-family property in the City, which has been determined to be 2,406 square feet of impervious surface area.

Example of SFRU Calculation:
1 SFRU =2,406 square feet of impervious surface area
Monthly rate per SFRU of $9.93 
Commercial Property has 23,800 square feet of impervious surface
23,800 square feet of impervious surface area / 2,406 square feet per SFRU = 9.89 SFRU’s
9.89 SFRU’s x $9.93 = $98.21 monthly stormwater utility fee

Stormwater Utility Rates: Frequently Asked Questions

What is an Impervious Surface?

An impervious surface is any surface within a property that does not allow water to seep into the ground.

Impervious Surface Area


Not Impervious Surface Area

Crushed Shells
Rock Beds
Landscaped Beds

Next Steps

Customers can view their property’s impervious surface area measurement in the Stormwater Review and Appeals Portal, which can be found in the box below. Through this portal, customers can submit an appeal for reevaluation if they feel the property has been measured incorrectly.

If you have difficulty using the portal, please call 727-893-7280 or email for assistance. 

Stormwater Review and Appeals Portal

City Council conducted a First Reading of the proposed rate ordinance on September 5, 2019 and adopted final rates at a Public Hearing on September 19, 2019. Rates became effective as of October 1, 2019. The adopted changes will be noted in your utility bill.

Stormwater Rebate Program

Coming soon, a limited number of rebates will be available to single-family residential utility customers who install rainwater catchment devices that help conserve water and reduce rainwater runoff. 

Device TypeRebate AmountMaximum Rebates
per Property, FY20
Maximum Rebates
per Property, Total 
Rain Barrel $50
Rain Tote  $100 
Rain Garden  $100 

The rebate will be administered through the Rainwater Guardian Workshop program. General eligibility requirements for the rebates can be found below: 

  • Attend a City-approved educational class and provide proof of attendance. No exceptions.
  • Provide a recent copy of the St. Petersburg utility account bill associated with the property where the installation will occur. This active account must be in good standing (no pending payments over 30 days late).
  • Obtain and submit an application (coming soon) signed by the property owner or representative designated by the property owner.
  • Provide itemized proof-of-purchase and other required documents for verification.
  • Meet additional requirements of a specific rebate device(s), as detailed by the program.

Find more information on the program HERE

Stormwater Utility Fee Credits

The City of St. Petersburg offers two stormwater fee credits (reduction in stormwater fee) to non-single-family utility customers that minimize stormwater runoff or improve the quality of stormwater runoff through approved practices. Since the stormwater impervious surface area measurements have been updated as part of the stormwater rate study, existing credits will no longer be in effect. Properties that have previously taken advantage of stormwater credits will need to reapply for consideration. Customers can estimate their potential stormwater fee credit in the Stormwater Mitigation Credit Calculator. Please be aware that a Professional Engineer will need to certify all applications. 

Who May Apply?

Non-single-family utility customers may apply. Single-family utility customers that are part of a larger common development or subdivision that has a privately-maintained stormwater facility permitted by Southwest Florida Water Management District may collectively apply. Eligible applicants include:

  • Commercial business properties
  • Multi-family unit properties
  • Industrial properties
  • Government properties
  • Condominiums/townhomes/traditional single-family home properties that all function off one metering system. Contact your homeowner or neighborhood association representative to collectively apply. Applications will not be accepted from an individual single-family property that is metered separately. 

Stormwater Management System Credit

Properties that operate and maintain onsite detention or retention stormwater management systems may receive a credit of up to 52% for reducing stormwater runoff impacts from the property to the City system. Find the application below.

Tidal Water Discharge Credit

Non-single-family properties that discharge stormwater runoff directly into Boca Ciega Bay or Tampa Bay may receive a credit of up to 52% for treating stormwater runoff to Outstanding Florida Waters criteria. Discharge to tidal waters cannot pass into or through City-maintained drainage systems. Find the application below.

Stormwater Utility Mitigation Credit Application

Applications need to be signed and sealed by a Licensed Professional Engineer. Call 727-893-7280 for assistance. Once a stormwater credit has been accepted, the Stormwater Utility Mitigation Inspection Checklist will need to be completed.

Questions on stormwater utility fee credits can be directed to

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City of St. Petersburg
P.O. Box 2842
St. Petersburg, FL 33731

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