Southern Nevada decorative grass ban (2021)
The Southern Nevada Water Authority voted to ban ornamental grass across the Las Vegas Valley, phasing out an estimated 4,000 acres of turf. The rule targeted Colorado River use as Lake Mead sank toward record lows.
The ban took effect for new homes in 2022 and phases out existing decorative grass over years.
It became a model for Western cities using land-use rules, not just emergency orders, to enforce permanent water conservation.
Salt Lake City is following the same playbook: a desert city making drought restrictions permanent through building code.
