Rainwater storage tanks should be kept clean at all times.
The rainwater storage tank should remain closed to keep it safe from falling leaves or other such objects. This will also ensure that no moss and weeds pollute the water. Retrieve water from the tank only using the tap fixed below it. The first 2-3 flushes of rain must not be used for harvesting. This is because, this will contain pollutants from the atmosphere. Make sure this water doesn’t seep into the water tank in anyway. If harvested properly, there is no natural source of water as pure as rain water.