See article Guttering
Flooding due to weather and local geography is impractical to prevent, other than by buying elsewhere.
Basement flooding may be resolved with a sump & automatic pump, or in cases where the house is on a hill often by diverting ground water around the house.
Watering of gardens encourages shallow root formation, leading to the need to water regularly. Thus minimising watering reduces the need for watering.
Perennials are much less likely to need watering after their first season than annuals. Annuals are always restricted to just one season's root growth.
Disposal of water next to the building is liable to result in damp problems. Water should be conducted several m away from a building before being disposed of in a soakaway.
Wellwater should be tested and any deficiencies corrected before being used as potable water.
Problems with wellwater may include:
- bacterial contamination
- pesticide contamination
- foul water contamination
- high mineral levels, leading to deficiency of other minerals in humans & animals.
For harvest and use of rain, see Rainwater Harvesting & Use
Grey water is water that has been used once, excluding foul water.
To harvest heat from grey water, see Drain Heat Exchanger