Which of the following is not a water
conservation method that engineers can implement to reduce freshwater
consumption?

Question

Answer

Pressure-reducing valves and smart metering to
minimize leakage and overconsumption

Answer

Construct
concrete tunnels only to transport stormwater runoff

Answer

Greywater recycling systems that treat and reuse
domestic wastewater from sinks and showers for non-drinking purposes

Answer

Rainwater harvesting using rooftop collection
and storage tanks

Answer

Drip irrigation systems that deliver water
directly to plant root zones

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