Responsible for the service City of Helsinki, Urban Environment Division
Cable Location Service
- Service location
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.
Visiting address
Työpajankatu 8
00580 Helsinki
Service hours
Call centre opening hours 1.3.2023- (on-site services must be booked by phone)
Monday-Thursday 9.00–15.00
Friday 12.00–15.00
Other contact details
Telephone number
+358 931031940
(local/mobile network fee)
Postal address
P.O.Box 58231
00099 Helsingin Kaupunki
Accessibility information
Text edited by: City of Helsinki, Urban Environment Division
Updated: 6/5/2026