(left) The graph shows the development of average prices for drinking water supply and water consumption of households in Spain.
(right) The graph shows the development of average prices for water supply for human consumption in Estonia.
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As of and including 2007, the survey questionnaire explicitly asks for the value of the sewage tax, which by delegation is billed by municipal councils and water cycle management bodies. This leads to a better estimate of the expenditure on waste water purification, which must be taken into account when comparing water unit cost indicators with previous years.
Illegal trade in tropical timber contributes to forest destruction. Many hardware suppliers are now selling timber that has been certified as legal and sustainable. Next time you shop for wood-products, check for labels such as the Forest Stewardship Council (FSC).
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