What size of water feature triggers the pool barrier requirement in Southern Arizona?
Verified against the primary source on .
It depends on the jurisdiction and the thresholds are not close to each other. Tucson, Pima County and Sahuarita: 18 inches or more deep and wider than 8 feet, intended for swimming. South Tucson: 18 inches deep and wider than FOUR feet. Sierra Vista: 2 feet or more deep and longer than 4 feet. Santa Cruz County: capable of 18 inches at any point, with no width test at all.
Before any barrier number applies, something has to count as a pool. Four different thresholds are in force across the four-county region, and the narrowest and the widest are far enough apart that the same water feature is regulated in one town and unregulated in the next.
Tucson, Pima County and Sahuarita. The adopted ISPSC amendment revises 305.2 to reach any contained body of water 18 inches or more deep at any point and more than 8 feet wide at any point, intended for swimming. Tucson’s Exhibit G and Pima County’s amendment exhibit carry the same language. Sahuarita amends 305.2 to the same 8 foot figure.
South Tucson. City Code Chapter 7, Neighborhood Preservation, Article II, Section 7-13(G)(3) reaches any swimming pool or other contained body of water 18 inches or more deep at any point AND wider than FOUR feet at any point AND intended for swimming. Half the width trigger its neighbours use. A 6 foot plunge pool or spa that falls outside the ordinance in Tucson is inside it in South Tucson.
Sierra Vista. UDO 151.04.009(A) reaches any swimming pool or other body of water intended for bathing 2 feet or greater in depth and longer than 4 feet in the largest linear dimension. A depth trigger of 2 feet rather than 18 inches, and a length test rather than a width test.
Santa Cruz County. Zoning and Development Code Section 1600 reaches water CAPABLE of 18 inches or more in depth at any point. No width or length test appears at all, which makes it the broadest trigger in the region.
A.R.S. 36-1681 applies to a contained body of water 18 inches or more deep and more than 8 feet wide at any point, intended for swimming.
Where this actually bites: spas, plunge pools, cold plunges, stock tank conversions and ornamental water features that someone swims in. The intended-for-swimming clause is what keeps a fountain out of the ordinance in most of the region, and Santa Cruz County’s text does not carry it in the same form. Verified against each jurisdiction’s own adopted text on 2026-09-10.
Correction. The assumption that the 18 inch deep by 8 foot wide test is uniform across Arizona. Three of the jurisdictions verified here use a different threshold.
Authority: Tucson Ord. 12171 Exh. G; Pima County Ord. 2025-15; Sahuarita Ord. 2026-197; South Tucson City Code 7-13(G)(3); Sierra Vista UDO 151.04.009(A); Santa Cruz County Zoning Sec. 1600; A.R.S. 36-1681. Verified 2026-09-10. Evidence grade: VERIFIED. Read from the adopting ordinance or the published code section.