Wastewater is reused for agricultural purposes for centuries and reuses without treatment are popular in developing countries because of cheap and reliable source of irrigation water with nutrient value. Agriculture sector is the largest user of reclaimed water and scope of wastewater reclamation and reuse is high in the Australia. The Australian regional water authority Barwon Water currently operates nine water reclamation plants. Barwon Water is committed to enforce triple bottom reporting in its activities and as such three aspects of sustainability, namely: social, environmental and economical are integrated appropriately to achieve sustainable path of these plants. This review analysis should help to give overview about status of current reclamation and reuse practices in the world with issues and challenges during application. Study analyses current practices of four inland reclamation plants in term of those three aspects and provides some strategies for improving opportunities in current situation.This book is useful to professionals in environmental engineering field specifically in wastewater reclamation and irrigation reuse.