Invoice for private water – 2026
19/10/2026
Every Flemish family contributes to the cost of transporting and treating discharged waste water. However, in 2026 there will be changes to the invoicing for private water supply users.
- What will change from the 2026 tax year onwards?
The water pollution tax will be abolished for the following zones: central areas, collectively optimisable rural areas and collectively optimised rural areas.
This will be replaced by a supra-municipal fee. This will be charged by the drinking water companies as of 1 January 2026.
- How will you be invoiced from 2026 onwards?
- You have already been receiving an annual invoice in the autumn for the municipal fee (for the discharge of waste water from your private water supply).
- From 2026, the supra-municipal fee will be added to this (for the treatment of waste water from your private water supply).
Both fees will therefore appear on a single combined invoice.
- Flat-rate calculation
The principles for the flat-rate calculation remain the same:
- Purely private water supply users (private customers with only their private water supply): 30 m³ per person domiciled at the place of consumption on 1 January of the tax year.
Rates for purely private water supply users
- Users of mixed private water supply (private water + tap water): 10 m³ per person domiciled at the place of consumption on 1 January of the tax year.
Rates for users of mixed private water supply
- Legal entities: 500 m³ per year.
- Purely private water supply users (private customers with only their private water supply): 30 m³ per person domiciled at the place of consumption on 1 January of the tax year.
- VAT
As the water pollution tax will be converted into a supra-municipal fee from 2026, it will also be subject to 21% VAT.