You need to put pure water in a clean container and then process it in some way to eliminate bacterial contamination. You can process the water with heat just like you do when canning, or use a chemical like chlorine or iodine.
That said, from what you are describing several causes come to mind. They are deviated septum, vasomotor rhinitis or nasal polyps. It sounds like you might have a nasal polyp on the right side of your nose. A nasal polyp is noncancerous, sac-like over-growth of inflamed tissue lining the nose or sinuses that can block nasal airway. Since it is the same side all the time, you might also have a deviated septum that occurs when the thin wall between your nostrils is displaced to one side, making one nasal passage smaller.
While the cause may be unclear at first, most cases when the nose bleeds are minor can be managed from home. Immediate causes of nose bleed include trauma to the nose from an injury, deformities inside the nose, inflammation in the nose, or in rare cases, intranasal tumors.Any of these conditions can cause the surface blood vessels in the nose to bleed.When you have a nosebleed for no reason, the cause of your bloody nose may seem mysterious or scary, but it's probably not.. Dry air from indoor heating or outdoor environment, which can dry the lining of the nose. Dry air can cause the lining of the nose to crack and bleed, leading to a nosebleed. Using a humidifier while sleeping can help relieve dryness in the external environment.