The city's centralised underground pipeline and structure location service, the Pipeline Information Service (JOPA), serves those involved in digging, excavation and excavation work.
To obtain the documents required for excavation work, use the Haitaton service (link below) or book an appointment for by phone.
Työpajankatu 8
00580 Helsinki
P.O.Box 58231
00099 Helsingin Kaupunki