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Dade City, FL Environmental Rules: Stormwater Management (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Core performance standard
No net increase in runoff rate or pollutants
First-flush treatment
First 1/2 inch of runoff treated on-site
Applicable regulators
City and SWFWMD; stricter standard applies
Engineering certification
Florida-licensed professional engineer required
Maintenance bond
10% of stormwater costs, 3-year minimum

Summary

Dade City, Pasco County, Florida requires new development to control stormwater so post-development runoff rates and pollutant loads never exceed pre-development conditions, under Land Development Regulations Sections 6.7.3 and 6.7.4. Projects must also meet whichever is stricter: the city's own standards or Southwest Florida Water Management District (SWFWMD) rules.

6.7.3 - Stormwater Management Standards (A)Purpose. This subsection establishes design and performance standards for stormwater management systems. Its purpose is to ensure stormwater management systems are established that minimize flooding, minimize erosion and sedimentation, protect and enhance water resources, and where possible preserve natural features.(B)Compliance with Applicable State and Water Management District Regulations. In addition to compliance with the standards of this subsection, development shall also comply with applicable state and South West Florida Water Management District (SWFWMD) regulations. In all cases, the strictest of the applicable standards shall apply. ... 6.7.4 - Stormwater Management System (A)General. Development shall be constructed and maintained so that post-development runoff rates and pollutant loads do not exceed pre-development conditions.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 18 | Land Development Regulations: Supplement 1).

Full Breakdown

3(A) states the purpose of the city's stormwater management standards directly: to minimize flooding, minimize erosion and sedimentation, protect and enhance water resources, and preserve natural features where possible. 3(B) layers state and regional review on top of the local standard, requiring compliance with applicable Florida and SWFWMD regulations in addition to the LDRs, with the strictest applicable standard controlling whenever the two diverge. 3(C) covers agricultural clearing that does not obstruct surface water, self-contained agricultural drainage systems, and private residences or agricultural buildings where total impervious area stays under 10,000 square feet and the site does not drain into a surface water body, canal, stream, or sinkhole; even exempt sites adjacent to or draining into a waterway still have to route runoff through a grassed swale or comparable conveyance that percolates 80 percent of the runoff from a three-year, one-hour design storm within 72 hours.

4(A) sets the core performance standard: development must be constructed and maintained so post-development runoff rates and pollutant loads never exceed pre-development conditions, with the first half-inch of runoff treated in an off-line retention system or another SWFWMD-approved best management practice. 4(H) requires every system not dedicated to the city to be operated and maintained long-term by an approved entity, such as a homeowners' association or the developer under a posted maintenance bond covering at least 10 percent of the estimated stormwater improvement costs for a minimum of three years. 4(E) until SWFWMD has certified that the construction plans qualify for permitting.

Violations & Fines

Developing a site so that post-development runoff rates or pollutant loads exceed pre-development conditions violates Section 6.7.4(A), and a stormwater system built without the professional engineer certification required by Section 6.7.4(G) can be rejected at plan review or flagged during construction inspection. Failing to secure or maintain an approved long-term operating entity for a non-dedicated system under Section 6.7.4(H) leaves the developer responsible for the system's operation and maintenance indefinitely.

Frequently Asked Questions

What is Dade City's core stormwater rule for new development?
Section 6.7.4(A) of the Land Development Regulations requires that development be built and maintained so post-development stormwater runoff rates and pollutant loads never exceed what the site produced before development, with the first half-inch of runoff treated in an off-line retention system or another SWFWMD-approved method.
Does SWFWMD or Dade City control stormwater review?
Both. Section 6.7.3(B) requires compliance with the city's own LDR standards and with applicable Southwest Florida Water Management District regulations, and specifies that whichever standard is stricter governs the project when the two rules differ.
Is a small home addition in Dade City exempt from stormwater rules?
It can be, under Section 6.7.3(C)(1)(c), if the total impervious area of the residence or agricultural building stays under 10,000 square feet and the site does not drain into a surface water body, canal, stream, or sinkhole; sites that do drain to a waterway still need erosion and sedimentation controls even if exempt otherwise.

Sources & Official References

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