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EN 18049-1:2026

Water wells - Part 1: Design

Edition date: 2026-10-21
In Force
Available languages: English
Summary: The document covers all aspects which are relevant for the design of all kinds of water wells abstracting from or injecting water to the groundwater or for groundwater observation. This document does not apply to horizontal wells and closed loop geothermal systems. The document defines design requirements of water wells for public and private users in accordance with groundwater protection goals. It gives guideline for all planning steps from preliminary to final executive project design. This document specifies a sequential method for designing a well. Based on the hydrogeological conditions and the objectives of the well, a step-by-step process of dimensioning the well is defined. This methodology includes dimensioning of the drilling, filter packs, sealing and screen. Furthermore, selection of appropriate materials, the pump and all other additional well equipment is established. With regard to the planning process references are provided to drilling methods, geophysical well logging, well development and pumping tests.

Le présent document est applicable à tous les types de forages d'eau, qu'ils soient destinés à un usage public ou privé, au prélèvement ou à l'injection d'eau dans les eaux souterraines, dans diverses applications. Celles-ci comprennent notamment le prélèvement d'eau potable, l'utilisation industrielle, l'irrigation, le rabattement de nappe, la recharge des aquifères, ainsi que les applications géothermiques ou les applications à des fins d'observation des eaux souterraines (voir Article 13). Le présent document ne s'applique pas aux forages horizontaux, aux forages de surveillance de la qualité des eaux souterraines situés sur des sites potentiellement contaminés, ni aux systèmes géothermiques en boucle fermée. Le présent document définit les exigences de conception des forages d'eau pour les utilisateurs publics et privés conformément aux objectifs de protection des eaux souterraines. Il fournit des lignes directrices pour toutes les étapes de planification allant de la conception préliminaire à la conception finale du projet. Il spécifie une méthode séquentielle de conception et de dimensionnement d'un forage. Sur la base des conditions hydrogéologiques et des objectifs du forage, il définit un processus étape par étape de dimensionnement du forage. Cette méthodologie inclut le dimensionnement du forage, des massifs filtrants, des scellements et des crépines. En outre, le document précise le choix des matériaux appropriés, de la pompe et de tous les autres équipements de forage supplémentaires. En ce qui concerne le processus de planification, il fournit des références pour les méthodes de forage, les diagraphies, le développement des forages et les essais de pompage.
ICS: 93.025-External water conveyance systems
CTN: CEN/TC 451 - 2168522

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