Re: what type of water is best for watering plants? soda, distilled, spring?etc

For the short term (a few weeks) there would probably be no detectable difference using any of the water you mentioned. What is bad is the long term accumulation of chemicals in the soil. This is what has happened in places where there has been extensive irrigation for a long time, such as the Central Valley of California. The soil can become unusable for growing plants.

Distilled water would be best if you can get it. Rain water and melted snow would also be good, as long as they are not from an industrial area, which may cause them to be acidic. Well water and spring water are probably good, too, but remember that all wells and springs are different. If they are high in salts, softening will help for long term plant growth. The list of chemicals from your tap (I assume that's what they are) will not do the plants any immediate harm, but long term use in the same small pot of soil could lead to chemical build-up in the soil.