Customer service opening hours from 01.01.2026

The customer service desk is open by appointment only.

Visits must be arranged separately with the employees working at the office by phone or email (firstname.lastname(a)hamina.fi).

Customer service (ownership changes, billing and contracts)

tel. +358 5 749 2510 weekdays 9 am – 11 am and 1 pm – 3 pm

email: vesilaskutus@hamina.fi

Work orders and fault reports during working hours (incl. water supply and sewerage problems, quality problems)

tel. +358 5 749 2777 weekdays Mon-Thu 8am-3 pm and Fri 8 am-11 am

Technical advice (connection statements, technical advice)

tel. +358 40 635 7110