TO: Mayor and Commissioners
FROM: Missie Barletto - Public Works Director
THROUGH: Terrence R. Moore, ICMA-CM
DATE: July 14, 2026
Title
PRESENTATION OF THE PROPOSED 2026 STORMWATER NON-AD-VALOREM (NAV) ASSESSMENT RATES
Body
Recommended Action:
Recommendation
Receive presentation concerning the Proposed 2026 Stormwater Non-Ad-Valorem (NAV) Assessment Rate Increase
Body
Background:
The City performed a Stormwater Rate Study to assess the City's existing stormwater rate structure and provide recommendations for improvement in FY 2023. The stormwater rate study findings, recommendations and options for future rate structure and rates were presented to City Commission on April 18, 2023. On May 16, 2023, the City Commission enacted Ordinance No. 18-23 establishing a new rate structure and process for implementing the annual Stormwater Non-Ad-Valorem (NAV) Assessment.
Stormwater NAV assessment rates need to be increased in order to fund projects identified in the 2019 Stormwater Master Plan aimed at addressing climate change impacts, flood control measures, drainage infrastructure enhancements, and compliance with evolving regulatory requirements including the MS4 National Pollutant Discharge Elimination System (NPDES) under the Environmental Protection Agency (EPA).
The current Stormwater Billing Unit (SWU) rate is $1.93/month or $23.17/year.
|
Tier No. |
Impervious Area Threshold |
Assigned SWUs |
Monthly Charge |
Annual Charge |
|
1 |
Residential - 0 to 2,000 square feet |
2.7 |
$ 5.21 |
$ 62.55 |
|
2 |
Residential - Over 2,000 to 5,000 square feet |
6.4 |
$ 12.35 |
$ 148.28 |
|
3 |
Residential - Over 5,000 to 7,000 square feet |
11.9 |
$ 22.97 |
$ 275.72 |
|
4 |
Residential - Over 7,000 to 10,000 square feet |
16.1 |
$ 31.07 |
$ 373.4 |
|
N/A |
Residential - Over 10,000 square feet |
(Actual S.F.) ÷ 500 |
($ 1.93) x SWU |
($23.17) x SWU |
|
N/A |
Non-Residential |
(Actual S.F.) ÷ 500 |
($1.93) x SWU |
($23.17) x SWU |
|
N/A |
Unimproved Land (1SWU) |
Less than 500 S.F. |
($1.93) x SWU |
$23.17 |
The proposed SWU rate is $2.02/month or $24.28/year, which equates to a 4.8% increase.
|
Tier No. |
Impervious Area Threshold (Square Feet, SF) |
Assigned SWU |
Monthly Charge |
Annual Charge |
|
1 |
Residential - 0 to 2,000 |
2.7 |
$ 5.46 |
$ 65.56 |
|
2 |
Residential - Over 2,000 to 5,000 |
6.4 |
$ 12.95 |
$ 155.39 |
|
3 |
Residential - Over 5,000 to 7,000 |
11.9 |
$ 24.08 |
$ 288.93 |
|
4 |
Residential - Over 7,000 to 10,000 |
16.1 |
$ 32.58 |
$ 390.91 |
|
N/A |
Residential - Over 10,000 SF |
(Actual S.F.) ÷ 500 |
($ 2.02) x SWU |
($24.28) x SWU |
|
N/A |
Non-Residential |
(Actual S.F.) ÷ 500 |
($2.02) x SWU |
($24.28) x SWU |
|
N/A |
Unimproved Land (Less than 500sqft Impervious) |
1 |
($2.02) x SWU |
$24.28 |
As is done each year, the 2026 Stormwater Tax Roll certification will be brought forth at a Public Hearing during an August 2026 City Commission meeting.
City Attorney Review:
N/A
Funding Source/Financial Impact:
This item will affect Stormwater Non-Ad-Valorem (NAV) Assessment Rates for the 2026 Tax Roll. These funds are used to operate, maintain, make additions, improvements, and extensions to the City’s Stormwater Management System, in addition to financing the administration of the program.
Timing of Request:
The timing of this request is of high importance to proceed with preparation of the 2026 Stormwater Tax Roll and to comply with Palm Beach County Tax Collector deadlines.