Milwaukee, WI Swimming Pools & Spas: Fencing & Safety Requirements (2026)
Key Facts
- Barrier height
- At least 48 inches, non-climbable
- Gap limit
- No 4-inch sphere passes through
- Gate rule
- Self-closing and self-latching
- Electrical permit fee
- $110 flat fee
- Enclosure trigger
- 36-inch depth or 3,965-gallon volume
Summary
Milwaukee requires private swimming pools and spas that reach a 36-inch depth or 3,965-gallon capacity to be enclosed by a non-climbable 48-inch fence with a self-closing, self-latching gate, plus a separate $110 electrical permit for hot tub wiring.
Every private swimming pool shall, at all times, be properly enclosed so as to prevent children and animals from entering such pools when unattended... An approved barrier shall consist of a properly erected and maintained non-climbable wall or fence at least 48 inches in height which entirely surrounds the pool. The wall or fence shall be constructed so that a 4 inch-diameter sphere cannot be passed through any opening... All gates in the walls or fences shall be self-closing and self-latching and shall be at least 48 inches above the ground level.
Full Breakdown
Chapter 75-20 defines 'swimming pool' as any structure used for wading, swimming, diving, water recreation, therapy or bathing, language broad enough to reach residential hot tubs and spas. A private outdoor swimming place capable of a 36-inch depth and at least 3,965 gallons must be enclosed by a non-climbable wall or fence at least 48 inches high, built so a 4-inch sphere cannot pass through any opening, with self-closing, self-latching gates. Smaller portable hot tubs under that size threshold escape the enclosure trigger but still need a Department of Neighborhood Services electrical permit, a flat $110 fee under the Building and Zoning Code fee schedule, before an electrician wires the unit.
Violations & Fines
An unenclosed qualifying pool or spa, or a hot tub wired without the required electrical permit, is a code violation the Department of Neighborhood Services can cite and order corrected.
Frequently Asked Questions
Does Milwaukee require a fence around a hot tub?
Do I need a permit to install a hot tub in Milwaukee?
Sources & Official References
Other rules in Milwaukee
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Fencing & Safety Requirements in Nearby Cities
How other cities in Milwaukee County handle fencing & safety requirements.