gray water; definition; residential standards

HB 2097 amends Arizona zoning laws to restrict local governments from imposing additional rules or penalties regarding gray water systems, reuse, or composting toilets beyond what is already established by state environmental regulations. This provision directly affects counties and cities that might otherwise have wanted to create stricter local standards for these water conservation practices. The bill ensures that all such regulations must align with existing state law, preventing local variations that could go beyond current environmental guidelines.