Where can I find my customer number?

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.

Your customer number for tap water can be found in the following places:

1. On your tap water bill.
2. At My Tap Water.
3. On your bank account statement of Waternet Drinkwater (only if you pay via Direct Debit).
4. In the email or letter you received after you registered for tap water or after you moved.

Are you a new customer?

Please register your new home

Water authority tax

You do not have an customer number for water authority tax. Instead, you use your DigiD to identify yourself and to log in to My Taxes.

Tip: you do not have to tell us you are moving for water authority tax. You should inform your municipality of your move and your water authority tax will be automatically adjusted (if it has changed).