Suggest a few useful ways of utilising waste water.

Explanation

### Step-by-Step Solution:

1. **Recharging Groundwater**:
- Wastewater can be treated and used to recharge groundwater aquifers. This process involves directing the treated wastewater into the ground through recharge wells or infiltration basins, which helps replenish the water table and ensures a sustainable water supply.

2. **Irrigation**:
- Treated wastewater can be effectively used for agricultural irrigation. This is particularly useful in areas where freshwater resources are scarce. It provides the necessary moisture for crops while also reducing the demand for potable water.

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