Tag 'drinking_water:legal = unsigned'

Value histogram for key 'official_ref'

• 1: NK191
• 1: NK095
• 1: NK160
• 1: Zd077
• 1: Zd078
• 1: Zd049
• 1: Zd069
• 1: St071
• 1: TW009
• 1: NK208
• 1: NK105
• 1: NK217
• 1: NK159
• 1: Pb01
• 1: NK128
• 1: NK123
• 1: NK114
• 1: NK179
• 1: NK163
• 1: NK141
• 1: NK022
• 1: NK033
• 1: NK164