However, rainwater is soft water and the preferred kind of water for your plants; do not confuse rainwater with soft water. Softened water is often harmful for your crops. Rainwater is free of the salts, minerals, and contaminants present in water, groundwater, and surface water handled by municipalities. Rainwater has a higher nitrogen level, too. Typically, plants consume much of their soil nitrates, and those nitrates come from the rain.

It becomes "hard" by picking up and holding minerals like chalk, lime, calcium and magnesium as rain falls to the ground and mixes with the soil. I am sure that when water evaporates, you find residue on your car or walls. The residue is the minerals that the water absorbs. On cars and walls, we call these "water spots" or on shower faucets "lime". Hard water is the water you get from the local water provider or the water from your well. We drink hard water which has these minerals and the minerals help our bodies.Hard water also has a better taste than softened water.

What is softened water?
With the calcium and magnesium extracted, softened water is essentially hard water. Using salt to eliminate the minerals in the water is the most common and least costly way to soften water. Hard water that goes through the softening phase ends up in the water with just one ion and that ion is salt. This helps keep the tub clean and the head cleaner for the shower. Your appliances should be more effective at running. Salt in your water can however, have harmful effects on your plants. Plants do not like salt, and since they can not tolerate the exposure, they will die. In addition, the plants may not want to soak up the salt, so they will start soaking up less water. This will allow the soil to accumulate salt. I'm sure all of you have noticed, in your soil, white lines or white lines that are red flags for your soil's excessive salt. In an attempt to push the salt down into the surface, you would then have to waste water by over watering.In the end, you will face a big bill to treat the soil with so much salt. Eventually, this can turn into a costly waste method.

TWS Solution for hard water problems in Agriculture 
Water becomes hard when it comes to the water pipe line, drip irrigation line and sprinkler nozzle are choked for a period of time because of the vast amount of minerals found in water, and there is no uniform supply of water to all crops. Hard TDS water also burns leaf tips, decreases plant growth, affects crop yield as opposed to regular water farming, and also damages the structure of the soil.

Agriculture Water Conditioner Benefits
Saves water by 20 to 30%
The vegetation period decreases.
Crop production & crop quality increases.
Improves soil structure. Controlling PH level.
Remove and prevent scaling on dripper and sprinkler
Reduce tip burning problem in leaves upto 45 to 60%
Increase growth rate of all types of crops & plants by 35 to 40%
Increase solubility of water for fertilizers.
Increase oxygen concentration which increase seed germination
Reduces effect of Chlorides & Fluorides, increases roots efficiency
Water is absorbed into the ground more easily
Fertilizer and Pesticides are mix very well and it gives better result.
It clean the root hair and root cap area in the soil.
Pure form of minerals will be kept in water which help the crops.
It enhances plant growth.
Reduces effect of Chlorides & Fluorides, increases roots efficiency
After a month - the number of blocked drippers was declining and The usual
procedure of cleaning dripper and flushing the lines is not required

For more details:- tathastuservices.com