What is the required pool barrier height in unincorporated Pima County?
Verified against the primary source on .
48 inches, measured on the exterior side opposite the pool. Unincorporated Pima County is the one authority of thirty in Southern Arizona that can lawfully require less than the five foot state standard, and it does so under A.R.S. 36-1681(D)(5).
Pima County Code 15.04.020 adopts the 2024 ISPSC by reference via Ordinance 2025-15, effective January 1, 2026. The prior adoption was the 2018 edition.
Pima County’s 2024 amendment exhibit was read in full. It amends numerous sections, including a new 303.4 requiring an evaporation cover on new and remodeled exterior pools, spas and hot tubs prior to final inspection, and a replaced 304 requiring written floodplain authorization. It does not amend 305.2.1, so the 48-inch base height governs.
That 48 inches survives the state statute, which is not true of most Arizona jurisdictions publishing the same number. A.R.S. 36-1681(B)(1) requires five feet. Subsection (D)(5) exempts a political subdivision that enacted a swimming pool barrier ordinance before the article took effect on June 1, 1991, and attaches no stringency test at all. The history notes to PCC 15.04.020 carry Ordinance 1989-78 Section 5, 1989, together with 1986, 1987 and 1988 amendments. That is a pre-1991 barrier ordinance, the exemption holds, and the County’s 48 inches stands. A primary-source audit on September 15, 2026 ran the same test against every other 48 inch entry in the Southern Arizona roster, and every one of them failed it.
Forty-eight inches is what is required here. Sixty inches is still the better build. A.R.S. 36-1681(D)(7) exempts a residence in which every resident is at least six years old, which means a barrier can pass inspection at 48 inches and leave that household outside the statute the day a child under six moves in.
Gates must open outward away from the pool and be self-closing and self-latching. Where the release mechanism is less than 54 inches from the bottom of the gate, it must be on the pool side at least 3 inches below the top, with no opening larger than one half inch within 18 inches of the mechanism.
How the height is measured. The dimension is taken on the side of the barrier facing AWAY from the pool, not the pool side, and it must be maintained around the entire perimeter and for 3 feet measured horizontally out from the outside face. A barrier that meets the height at the gate and loses it where grade falls away does not comply. Grade changes on a sloped Southern Arizona lot are the usual reason a wall that measured correctly at layout fails at inspection.
Crossing a jurisdiction line changes this number. unincorporated Pima County requires 48 inches. Different in the same metro area: Town of Marana at 60 inches; Town of Oro Valley at 60 inches; Town of Sahuarita at 60 inches; City of Tucson at 60 inches. A builder working across Southern Arizona cannot carry one standard barrier detail, and a barrier specified for one town will fail inspection in another.
Verified against the jurisdiction’s own adopted text on 2026-09-10: in Unincorporated Pima County, the gate latch release sits not less than 54 inches above grade; the barrier stands at least 20 inches back from the water’s edge; horizontal members on the outside face are spaced not less than 45 inches apart vertically; no opening passes a 4 inch sphere; chain link mesh is limited to 1.75 inches.
Unincorporated Pima County accepts a powered safety cover meeting ASTM F1346 in lieu of the listed barrier requirements. That is a real alternative here, and it is not available in every jurisdiction in the region, so it is worth confirming before a design depends on it.
Zoning setback, side and rear: 4 ft, per PC Zoning 18.07.030(D)(1)(a). Read the datum carefully. Jurisdictions in this region measure the same setback to different things, some to the pool structure, some to the edge of water, and a design that clears one measurement can fail the other.
Important. Pima County’s own public barriers page still referenced the 2018 edition at time of verification. The height is unchanged; the edition citation is not.
Authority: PC Code 15.04.020(A)(11); Ord. 2025-15 Exh. K. Ordinance: Ord. 2025-15. Effective: 2026-01-01. Verified 2026-09-10. Primary source. Evidence grade: VERIFIED. Read from the adopting ordinance or the published code section.