[ungruntled]

I’m sure people can hallucinate differences in taste, but there are very much differences in taste between water sources and water stored in different containers. For instance, many restaurants in nyc serve tap water in glass containers cleaned with bleach and improperly rinsed so you smell the chlorine. The water supply itself can contain chlorine, for instance in many countries chlorine is added to the water supply for various reasons including known mixing of fresh and sewage water. Plastics used in water bottles affect taste and smell. Aquafina and Dasani bottles for instance have a commonly known strong taste of plastic. Plastic bottles left in sunlight for prolonged periods will have an even stronger taste and smell. Cities will change water sources periodically. For instance nyc recently in the last few years adjusted their sources and building managers sent notices saying the new source will taste more “nutritious and earthy”. My building also has had a hot water boiler and cold water mixture issue as well as a contaminant issue that they solved by introducing additional chlorine. However the cold water also is frequently rusty and brown from boiler water mixing in, which probably has its own flavor.

Taste can differ from building to building, city to city, container to container.