Oasen water for your household, from the first address check onward

Oasen supplies drinking water in eastern South Holland and southwestern Utrecht, including parts of the Green Heart. Mijn Oasen brings registration, moving, readings and billing together. For renters, the key questions are who pays the supplier, which meter belongs to the home, and which readings apply at key handover.

Oasen drinking-water service area. Oasen's service area crosses provincial and municipal boundaries. Gouda is a useful regional reference, but neither a province nor a municipality proves supply for every address. Use the Vewin finder and Oasen's registration route to confirm the home. Regional reference boundary from RIVM/Atlas Leefomgeving, published 30 April 2026 using Vewin data from 2024; public-domain reuse. This map supports regional orientation, not an address-level service guarantee. Confirm the full address with the supplier, particularly near boundaries or for a new development.

1. 1

   Step 1

   Register a home with Oasen

   Open Mijn Oasen, choose 'Account aanmaken' and then the option saying you are not yet a customer. Oasen allows a move to be reported up to three months before key handover. For a future date it emails a personal reading link on the day; the reading finalises registration. Start at the portal home if a deep registration link fails. Before registering, check your tenancy agreement and ask who holds the water account. A separate meter does not by itself prove that you need a direct contract: the landlord may invoice the water. Confirm the arrangement to avoid paying twice.

   Open the registration page
2. 2

   Step 2

   Meter readings for Oasen

   Oasen accepts annual readings through Mijn Oasen or the personal email link. Report the black digits, not the red ones. Its instructions warn that a late reading can lead to an estimate and that correcting it afterward may incur a charge. Where the home has a meter, check that it serves your home, especially in a shared meter cupboard. Follow the supplier’s display instructions and do not invent a reading if access is impossible. Ask the landlord or building manager for access or a dated reading. For a genuinely unmetered home, confirm the applicable billing arrangement instead.

   Submit a reading
3. 3

   Step 3

   Moving with Oasen

   Deregister the old address separately and register the new one if Oasen also supplies it. Correct a changed key date in Mijn Oasen. Submit dated readings for both homes and retain the final invoice; do not rely solely on the next tenant to close your account. At each key handover, record the actual reading and meter number if the home has a meter, photograph the display and keep the handover report. For an unmetered supply, confirm the supplier’s or landlord’s billing arrangement instead. Use the dates you receive and return the keys, which may differ from the day you move your belongings. Keep the supplier’s confirmation and a forwarding address for the final bill.

   Open the moving page
4. 4

   Step 4

   Bills and tariffs at Oasen

   Oasen's bill combines variable consumption, an annual fixed charge and taxes. New registration may attract an administration fee; Oasen states that online registration is cheaper than telephone or letter. Check the current tariff schedule rather than assuming registration is free. An instalment is an advance, not an all-inclusive price. For a metered supply, compare opening and closing readings; for an unmetered supply, verify the applicable units or billing category. Check the billing dates, consumption, fixed charges and tax lines on the settlement. A short tenancy or low consumption does not automatically remove applicable fixed charges. Use the current official tariff schedule rather than a national average to budget.

   View current tariffs