You can find your customer number on your tap water bill, on your bank account statement of Waternet, or in the email or letter after you registered your address.Read more
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Other contact options
Call us on business days between 8.00 and 17.00.
Ask your question via Facebook or Twitter on business days between 9.00 and 17.00.
Email not available
You can send us an email after 20.00. During the day, we would rather help you in a chat or a phone call.
Frequently asked questions
Are you moving to or out of Amsterdam? Then you need to take action for your tap water.Find out more
View our bank account numbers. Please use a different one for each service: your tap water and water authority tax.View our bank account numbers
Register the new customer. Do you have a water meter? Then the current account holder will receive a final bill.Read more
If you moved out of The Netherlands, you may still have to pay an outstanding amount. Please check what kind of bill you received: waterschapsbelasting (water authority tax) or drinkwater (tap water).Read more