Answer #1 ·
Brent Wilson's Answer · Hi Sally,
That I am aware of, chemically treated city water does not kill your plants. That being said, natural water, from rainfall, from lakes, and from above or underground streams seems to be more beneficial to plants. I've noticed that over periods of time when there isn't much rainfall, and plants are only provided supplemental irrigation using chemically treated water, the foliage of plants appears less vibrant. As soon as a rain comes, especially with thunderstorms, the plants immediately perk up and look more colorful and vibrant.
There's a good explanation for this. Thunderstorms produce negative ions. Prior to a thunderstorm there is a very high concentration of positive ions in the air. Positive ions are often pollutants such as dust, bacteria, pollen, chemicals, and fumes. The storm releases electrical discharges consisting of high concentrations of negative ions. Negative ions destroy many of these air pollutants and does some other beneficial things therefore helping the plants...not to mention give us humans a sense of well-being.
If all you have to water your plants with is chemically treated water than by all means use it. You might want to consider getting a rain barrel, or some type of rainwater collection system, to collect and store natural water that can be used to water indoor and outdoor plants.
Hope this info helped,
Brent)