There are lots of small initiatives, either at the user end -- e.g. turning off stand-by switches, drinking tap water -- or the supply end -- e.g. wind energy, tidal energy.

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Those served by the reservoir were warned to boil their tap water before drinking or using it to prepare food, brush teeth or bathe babies.

BBC: Late warning for water customers

In fact, in many cases, the degree of exposure to toxic chemicals in tap water by inhalation is comparable to the exposure that would result from drinking the stuff.

ECONOMIST: Indoor pollution

If all goes according to plan, by the year 2001, the city's sewage water will be treated and recycled right into the drinking tap.

CNN: San Diego hopes to recycle waste water