Well hard water just means you have alot of calcium in your water. I'm not sure if a water softener removes chlorine or not? Is it a purifier or water softener?
Edit: What he said~
found this for you guys...hope it helps
A few irrigations with softened water will usually not damage house or landscape plants, but long-term use of soft water can cause changes in soil structure, which reduce drainage and increased water-logging of soil and can cause direct injury to plant tissues. The injury is expressed as a tipburn, which causes the tip and margins of leaves to first yellow, then brown and die.
A water softener changes the chemical composition of the water coming into the house. Hard water contains dissolved minerals of magnesium, calcium, iron and bicarbonates. The first three minerals are actually plant nutrients. The water softener uses sodium chloride (table salt) to replace these hard water salts with sodium salts which have the effect of making the water "soft." Very hard water requires more sodium salt to soften it. So the harder the water, the more toxic(sodium salts) the softened water will be to your plants.
Chlorinated water can also have an adverse effect. Chlorine gases are one of the constituents of air pollution that can damage plants. Prolonged use of chlorinated water can cause plants to develop leaf spots and bronzing of the tissues.
What can be done to avoid soft water- and chlorine-caused injury? Water that is used for plants should be taken from a faucet (usually an outside faucet) before it goes through the water softener. To remove the chlorine, just allow the water to stand in a bucket for several hours before using it. The chlorine will dissipate into the air.
If you have an air conditioner, collect the condensation water from the unit. The condensation water is nearly pure and is ideal for watering plants. You will need to add nutrients (soluble fertilizer) to air conditioner water to keep your plants adequately nourished.
