It is not recommended to use tap water to wash the nose, because tap water is not sterilized and contains bacteria, which can easily cause nasal infections.
Clinical treatment for chronic rhinitis and sinusitis can be combined with nasal rinsing in conjunction with medication. The main role of nasal rinsing is to promote the discharge of nasal secretions through rinsing, so that the nasal cavity to keep clean and dry, conducive to the recovery of the function of the ciliated cells of the nasal mucosa, but also conducive to the absorption of drugs and play a role.
In general, you can choose saline nasal rinse, if the degree of nasal inflammation and edema is more serious, you can also choose a higher concentration of saline rinse, you can generally choose about 2% concentration of saline rinse nasal cavity.
Tap water rinsing the nose is certainly not, because the tap water is not sterilized, sterilization, easy to lead to nasal infection. If you really do not have the conditions to get saline, you can choose to boil the tap water, sterilized and disinfected, and then use it at room temperature, but it is not recommended for long-term use.