Gas

Suomen Kaasuenergia Oy
http://www.gasum.com/Pages/frontpage.aspx
tel. 020 44 78550

Electricity

You can order electricity from Helsinki Energy anywhere in Finland . You can also get Plussa points for your electricity purchases, if you have a personal Plussa card.  You can compare rates with your present energy supplier and set up service on the website or by calling customer service, telephone number 010 802802.
http://www.helsinginenergia.fi/en/sahko/elcontract_hel.html

Water

Helsingin Vesi
Ilmalankuja 2 A, PB 1100, 00099
http://www.helsinginvesi.fi/index.asp?language=2

The City of Helsinki Water Department [Finnish]
Open 8.15- 16.00 Switchboard 310 1681,
Info 310 3300,   Fax    310 33001      
Website     www.helsinginvesi.fi 
Email helsingin.vesi@hel.fi