DVGW Set of Rules Water
They ensure that water is safe to use at all times. The DVGW Set of Rules is compulsory reading for water supply companies, tradesmen, plumbers, engineers, health authorities and anyone who deals professionally with the subject of drinking water.
W 551-2 Technical Rule - Standard 08/2022 -pdf-file-
This standard W 551-2 applies to the operation and maintenance of drinking water installations in buildings. It stip-ulates the requirements on the management of technical and microbiological irregularities that may ad-versely affect hygiene in drinking water installations.
W 402 Code of Practice 09/2010
This Code of Practice W 402 describes how to collect and process reliable inventory, condition and environmental data about water distribution systems. Condition data notably include data on damages especially failures. These data shall serve mainly as a basis for systematic maintenance in accordance with DVGW W 400‑3 (A) and DVGW W 403 (M). Reliable failure statistics are of particular significance in this context as they serve to predict failure and failure rates and, consequently, determine the residual service lives. This Code of Practice supersedes Instruction Bulletin W 395 dated July 1998.
W 400-1 Technical Rule Standard 02/2015
W 400‑1 Technical Rule Standard 02/2015
W 213-1 Technical Rule - Standard 07/2023
This Standard W 213-1 covers the principles of particle removal in the treatment of drinking water for public supply. It focuses on the removal of particles in the treatment of waters that may be susceptible to interference from surface waters, in particular river, lake, dam, spring, karst and fissure waters or water ob-tained from riverbank filtration. DVGW Series of Standards W 213 Part 3 through Part 5 describe water treatment methods that have been specifically designed for particle removal. DVGW Standard W 213-2 and DVGW Standard W 213-6, respectively, cover the assessment and application of granular filter media and the monitoring of water treatment methods for particle removal. This series of standards does not cover artificial groundwater recharge, which is described in DVGW Standard W 126 “Design, Construction and Operation of Plants for Artificial Groundwater Recharge for Drinking Water Abstraction”. Likewise, this Standard at hand does not cover processes aimed at e. g. adjusting the pH value of water or removing iron, manganese, organic substances or heavy metals. Such processes also employ the use of filters and can, in certain circumstances, run simultaneously with the particle removal process. These processes are covered in the DVGW Standard series W 223 (Removal of Iron and Manganese) and in DVGW Standards W 214-2 (pH Adjustment), W 239 (Organic Matter Removal) and W 249 (Re-moval of Heavy Metals).
W 202 Technical Rule - Standard 03/2010 -PDF file-
W 202 Technical Rule ? Standard 03/2010
W 130 Technical Rule - Standard 10/2007 -PDF file-
This Code of Practice W 130 serves as a basis for the regeneration of wells and groundwater monitoring points. Ageing processes frequently compromise water well performance, adversely affecting, in turn, a wells service life and economic mode of operation. Well operators therefore face the dual challenge of having to identify the most appropriate regeneration methods for each specific case and being able to evaluate the success of the measures taken. Eventually, a direct capacity increase will ensure the economically efficient operation of a well over the long term only when combined with sustainably successful measures. Any well regeneration measures will, therefore, depend on the nature and scope of ageing and on the constructional condition of the well as well as on groundwater protection requirements. This Code of Practice describes the current requirements on the technically safe and hygienically flawless implementation of well regeneration measures, points out the causes of and explains how to identify well ageing processes, among other things, and offers suggestions on how to delay them. It additionally describes the application options and limits of both mechanical and chemical regeneration procedures and/or methods. By applying this Code of Practice, well operators and contractors alike will be able to record and trace the results achieved by the regeneration measures and evaluate their success, from the planning to the implementation and on to the final phase.
W 129 Technical Rule - Standard 04/2012 -PDF file-
W 129 Technical Rule ? Standard 04/2012
W 128 Technical Rule - Standard 07/2008 -PDF file-
This Code of Practice W 128 provides a basis for the drilling and dimensioning of horizontal boreholes and the construction of horizontal filter wells. This Code of Practice does not discuss cut‑and‑cover methods ‑ protected by e.g. pit lining ‑ that are sometimes used in the field.
W 127 Technical Rule - Standard 03/2006 -PDF file-
W 127 Technical Rule ? Standard 03/2006
W 126 Technical Rule - Standard 09/2007 -PDF file-
W 126 Technical Rule ? Standard 09/2007
W 124 Technical Rule - Standard 11/1998 -PDF file-
The technical bulletin on hand makes recommendations for these inspections and acceptances of the awarded drilling and well construction work, which have been compiled on the basis of the set of technical rules and which shall be applied on a case‑by‑case basis. It has become apparent that in order to avoid misunderstandings and costly rework, any acceptances and inspections shall have to be agreed beforehand between the parties involved within the scope of the bill of quantities/construction contract, in particular if the specialist company has to make available equipment and facilities at certain dates or work steps. The selection of the acceptances and inspections to be performed in the individual case shall be guided by the hydrogeological conditions and shall be in line with purpose, type and scope of the structure and the materials used.