Unearth the fundamental tenets of environmental engineering and the art of crafting sustainable water resource management frameworks. Examine the seamless integration of hydrological mechanisms, water quality imperatives, and ecosystem dynamics in the orchestration of water provisioning, wastewater treatment, and stormwater governance systems. How can avant-garde technologies such as green infrastructure and decentralized treatment paradigms foster resilience and adaptability in the face of mounting pressures from climate vagaries and urban sprawl?