As the previous post says, ...

As the previous post says, the key is to cause the maximum amount of water to soak into the ground (assuming sufficient porosity of the soil and underlying rock) - collecting it from roads, roofs and reinserting it in the well ,and perhaps even by diverting small streams across prepared gravel beds.  If you are collecting road runoff and you have a lot of road traffic, you may want to divert the water into a rainwater garden, so the soil can break down pollutants such as oil or rubber or brake dust before it goes into the well.

Also - I don't know what type of climate you live in, but have you thought about using shiny surfaces or fog nets to capture overnight dewfall as condensation?  People can use that water for some needs such as washing, which avoids having to pump as much ground water.