5 county-level rules, plus city-specific rules for 2 cities in Middlesex County, New Jersey.
Verified from official government sources
Middlesex County does not issue pool permits. In New Jersey, residential pools are permitted under the state Uniform Construction Code (N.J.A.C. 5:23), which adopts the International Swimming Pool and Spa Code and is enforced by each municipality's construction official, not the county.
Residential pool barriers in Middlesex County follow New Jersey's statewide Uniform Construction Code, which adopts the Swimming Pool and Spa Code. Barriers must be at least 48 inches high with openings that do not pass a 4-inch sphere. The municipal construction official inspects.
NJ Swimming Pool and Spa Code (ISPSC 2021) Sections 305.2.1, 305.2.2, adopted by N.J.A.C. 5:23
The top of the barrier shall be not less than 48 inches (1219 mm) above grade... Openings in the barrier shall not allow passage of a 4-inch-diameter (102 mm) sphere.
Pool safety in Middlesex County is set by New Jersey code, not county ordinance. Residential pools follow the Uniform Construction Code's barrier, bonding, and alarm rules, while public and semi-public pools are inspected by the county health office under N.J.A.C. 8:26.
Above-ground pools in Middlesex County require a municipal construction permit under New Jersey's Uniform Construction Code. They must meet the same 48-inch barrier standard as in-ground pools; a raised pool wall can count as the barrier if the ladder is secured or removable.
Residential hot tubs and spas in Middlesex County follow New Jersey's Uniform Construction Code and need a municipal construction permit. Spas with a lockable safety cover meeting the standard may be exempt from a separate barrier. Public spas are county-inspected under N.J.A.C. 8:26.
2 cities in Middlesex County have their own swimming pools & spas rules. Each link goes to that city's dedicated page with code citations.
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