Options:

• Well
  • Need to test water frequently
  • Will need to maintain water pump
  • Need to maintain a pressure tank in the home
• Harvesting rainwater
  • Safe to use for showers and toilets if passed through a filter, uses a first-flush system, protected against light and stored in a cistern

Conclusion: Depends on the area for well vs. city drinking water. In either case supplement with harvested rainwater for showers and toilets. Make sure paved surfaces are permeable and direct water to desired areas / plants.

Cost: $15,000 = $5,000 to drill a well though could be more depending on the area + $10,000 for a cistern.

References:

• Going off grid Septic or well
• Wells, Septic systems
• Harvesting rainwater
• Cost of a cistern
• Installing rainwater catchment system
• Rainwater management
• Water permeable landscaping surfaces
• Urban farming