The IWMA’s service area encompasses:

• The seven (7) cities of Arroyo Grande, Atascadero, El Paso de Robles, Grover Beach, Morro Bay, Pismo Beach, San Luis Obispo
• The twelve (12) community service districts of Avila Beach, California Valley, Cambria, Cayucos, Ground Squirrel Hollow, Heritage Ranch, Los Osos, Nipomo, Oceano, San Miguel, San Simeon, Templeton
• Unincorporated areas of San Luis Obispo County