Rainwater harvesting can provide a realistic source of water for homeowners living in remote areas or those who for one reason or another prefer not to use their groundwater inside the house. Local groundwater may have problems common in many parts of Arizona: high mineral content, naturally occurring elements such as arsenic and fluoride, and contaminants from various sources, such as overflowing septic tanks, and agricultural, industrial or mining activities. Homeowners may have low-yield or seasonally dry wells and wish to avoid trucking in water. They may be unwilling or unable to drill or deepen a well. They may prefer rainwater for its taste, softness or other desirable qualities. In these situations, homesteaders may find large-scale rainwater harvesting a practical alternative. Large systems can provide potable water for an entire household.