Answer:
Part A : The author provides several solutions for efficient and sustainable water systems.
Part B: It explains how accounting for water and water loss control are methods to achieve sustainability.
Step-by-step explanation:
Base on the passage:
Improving water efficiency reduces operating costs (e.g., pumping and treatment) and reduces the need to develop new supplies and expand our water infrastructure.
limited freshwater supplies, leaving more water for future use and improving the ambient water quality and aquatic habitat.
More and more utilities are using water efficiency and consumer conservation programs to increase the sustainability of their supplies.
Metering helps to identify losses due to leakage and also provides the foundation on which to build an equitable rate structure to ensure adequate revenue to operate the system.
Hence, the answer is
Part A : The author provides several solutions for efficient and sustainable water systems.
Part B: It explains how accounting for water and water loss control are methods to achieve sustainability.
~Lenvy~