It may happen that you have paid too much. We will refund the overpaid amount. 

How it works

Check your bank statements and your tax assessment notice to see whether we have already refunded the overpaid amount to your account.

If this is not the case, please contact us at 072 - 582 8600. Please ensure you have the following information available:

  • how much you have transferred;
  • from which account number;
  • on what date;
  • stating the payment reference number.

This will enable us to easily locate your payments.

Frequently asked questions

I now live alone. Do I need to submit a request for a reduction in my tax assessment?

No, this is not necessary. If the Personal Records Database (BRP) shows that you have moved in alone, we will reduce the purification levy or pollution levy for your living space. You will receive a letter about this. We will not reduce the water system levy or the road levy. This is determined by law.

I have closed my business. Will I receive a tax reduction?

Tax 1 ve

If your water consumption is less than 44 m³, you will receive a charge of 1 pollution unit (pu). This is the minimum charge for commercial premises, regardless of the duration of use. You are not eligible for a reduction.

Tax 3 ve

If, upon termination, your water consumption according to the final bill from the drinking water company is less than 44 m³, you can submit a request for a reduction in the assessment. You must submit your objection digitally or in writing. Please include a copy of the final bill!

Tax assessment exceeding 3 ve

If your water consumption exceeds 217m³, you will receive a provisional or final assessment of 5 ve or more. If you have stopped using the water, you can request a reduction based on the final bill from the drinking water company. You must submit your objection digitally or in writing. Please include a copy of the final bill!

What happens to the tax assessment after death?

We are reducing the purification levy or the pollution levy. You will receive a letter about this;

We will not reduce the water system levy and the road tax. This is stipulated by law.

What is HHNK's account number?

IBAN: NL20 NWAB 0636 7586 80 in the name of HHNK.

For payments from abroad, please state the BIC number: NWABNL2G