I found some info about my tap water
ph is 7.6 but it raises to 8.6 after 24h
salinity - 0 (µS/cm)- 804 mg
CaCO3 - 294,6 , °D - 16,5
This means it's on 3/5 level of hardnes..
There is soft , light hard, medium hard (mine) hard, and very hard..
TDS (mg/L)- 459
@TintEastwood I order this...