If you wish to extract groundwater in more than just minor quantities, you need a permit under water law.

If you wish to modify a project for which you already hold a water rights permit, you must apply to the competent authority for an amendment to the permit.

The permit specifies the type and extent of use and is valid for a limited period. It may be subject to conditions and ancillary provisions. Unlike an authorization, a permit can be revoked by the authorities. A permit does not confer a legal right to use groundwater. You do not need a water law permit if you extract groundwater only in small quantities and without adverse effects on the water balance, for example, for

• your own household,
• watering your garden,
• agricultural operations,
• watering livestock, or
• draining property.