Water supply

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Although covering some 70% of the Earth's surface, most water is saline. Freshwater is available in almost all populated areas of the earth, although it may be expensive and the supply may not always be sustainable. Sources where water may be obtained include:

Contents

[edit] Global water usage

A major factor of sustainable living involves that which no human can live without, water. Unsustainable water usage has far reaching implications for humankind. Currently, humans use one-fourth of the earth’s total water in natural circulation, and over half the accessible runoffW.[2] Additionally, population growth and water demand is ever increasing. Thus, it is necessary to use available water more efficiently.

The classic solution with minimal life-style changes for obtaining water in a autonomous house is by using a well. Once drilled, a well-foot requires substantial power. However, advanced well-foots can reduce power usage by twofold or more from older models. Well water can be contaminated in some areas. The sono arsenic filter eliminates unhealthy arsenic in well water.

However drilling a well is an uncertain activity, with aquifers depleted in some areas. It can also be expensive.

In regions with sufficient rainfall, it is often more economical to design a building to use rain, with supplementary water deliveries in a drought. Rain water makes excellent soft washwater, but needs antibacterial treatment. If used for drinking, mineral supplements or mineralization is necessary.[3]

[edit] Transporting water

In order to transport water, we have 2 options:

[edit] Notes and references

[edit] See also

  • Sewage system: most systems (in the developed world) use a combined sewage/potable water system

[edit] External links