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Water

Towards a sustainable water supply

  • 3 things to know
  • Paper 2 section C

Overview

Sustainable water supply, conservation in homes and farming, metering, groundwater management, recycling and grey water, and low-cost local schemes in poorer countries such as the sand dams of south-eastern Kenya.

What you need to know

Answer each one before you reveal it.

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Key term

How can water companies and farmers cut the water they waste?

Key term

Why does metering tend to reduce the water a household uses?

Key term

What happens to a coastal aquifer that is pumped too hard?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What makes a water supply sustainable?

    Model answer

    It meets present needs without taking more than is naturally replaced, so future generations and the environment are left with enough.

  2. 2

    What is water conservation?

    Model answer

    Reducing the amount of water people waste or use so that existing supplies go further.

  3. 3

    Give three ways a household can conserve water.

    Model answer

    Fitting low-flush toilets and efficient washing machines, taking shorter showers, and collecting rainwater in a butt for the garden.

  4. 4

    How can water companies and farmers cut the water they waste?

    Model answer

    Companies can find and repair leaking mains, and farmers can switch from spraying to drip irrigation that delivers water straight to the roots.

  5. 5

    Why does metering tend to reduce the water a household uses?

    Model answer

    People pay for what they actually use, so wasting water costs them money and they take more care.

  6. 6

    What is groundwater management?

    Model answer

    Controlling how much water is pumped from aquifers, usually by licensing abstraction, so that it is not drawn out faster than rainfall can recharge it.

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