There were some tests done in Delhi recently to check where all the groundwater has become dirty. A number of areas were found that have dirty groundwater, which is not good for drinking.

Didn’t understand a thing? Hmm… Let’s start again..

Do you have plants in your house? Have you ever watered them? If you have watered a plant in a pot, you must have seen that sometimes the water leaks from the bottom of the pot. Why do you think that happens?
This happens because the mud in the pot absorbs as much water as it can and all the extra water flows out.

Now imagine this. All the water coming from rain, snow and hail falls on the ground. Soil in the ground absorbs as much water as it can hold. All the extra water trickles down deeper into the ground and gets collected.
This collected water is Groundwater.

Machines pull this groundwater out by digging into the ground with the help of pipes, delivering the water to farmers for growing crops, and to people living in towns and cities for drinking.

Groundwater becomes dirty when people dump too much litter on the ground, when farmers put more than needed medicines on their fields or when factories trash their waste on the ground. This harmful waste seeps through the soil, making clean groundwater dirty and unfit for use.

Now try to read it again:

There were some tests done in Delhi recently to check where all the groundwater has become dirty. A number of areas were found that have dirty groundwater, which is not good for drinking.

Hope you could make sense of it this time !!  :)