Sahuarita, AZ Landscaping Rules: Rainwater Harvesting (2026)

Arizona is one of the most rainwater-harvesting-friendly states in the country. House Bill 2675 explicitly encourages rainwater collection and prevents HOAs from prohibiting rain barrels and harvesting systems on residential properties. There is no limit on the amount of rainwater a residential property can collect. Standard rain barrels of 50 to 500 gallons typically do not require building permits when properly placed and plumbed. Larger cistern systems may require permits depending on structural support and plumbing connections. Sahuarita receives approximately 12 inches of rainfall annually, with the majority falling during the intense monsoon season from July through September. A 1,000-square-foot roof can capture approximately 600 gallons per inch of rainfall. Monsoon storms can deliver 1 to 2 inches in a single event, making collection systems highly productive during the wet season. Harvested rainwater is ideal for irrigating native desert plants and fruit trees. The Pima County Regional Flood Control District provides educational resources on rainwater harvesting, and Tucson-area rebate programs may extend to Sahuarita residents. Passive rainwater harvesting through landscape grading that directs runoff to planted areas is a cost-effective alternative to barrel systems.