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Table 5.1a - Understanding future demand for wastewater services

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Information needed Suggested sources
Expected population growth
  • local authority
  • Statistics New Zealand
  • be careful about assumptions underlying the figures – check against your ‘gut’ feel.
Number and type of households
  • as above
Number and type of businesses – future growth
  • hard to do and will depend a lot on local knowledge (eg, camping ground owner wants to expand)
Current wastewater volumes of an existing system – in wet and dry weather
  • local authority

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