What are the disadvantages of rainwater harvesting?

Answer:
  • The annual rainfall is limited to a minimum of roughly 2000 mm/year and should be spread in at least two (long) rain-periods of three months without total drought inbetween.

  • Cost per capita is higher for a rainwater harvesting system than for a communal pump or well.

  • Personal systems do not improve social activities (nor do they necessarily spoil them).

  • Some kind of organisation, structure or retailer should be and stay present after construction to supply the users of spare parts and repair materials.
First answer by ID2057446004. Last edit by Cobber43. Contributor trust: 295 Question popularity: 3 [recommend question].