{"id":24205,"date":"2026-01-14T13:50:46","date_gmt":"2026-01-14T12:50:46","guid":{"rendered":"https:\/\/informacjainstal.com.pl\/artykul\/wplyw-roznic-w-definicjach-wskaznikow-wyciekow-na-porownywalnosc-danych-wymaganych-dyrektywa-w-sprawie-jakosci-wody-do-spozycia\/"},"modified":"2026-01-14T13:52:26","modified_gmt":"2026-01-14T12:52:26","slug":"the-impact-of-differences-in-defining-leakage-indicators-on-the-comparability-of-data-required-by-the-drinking-water-directive","status":"publish","type":"artykul","link":"https:\/\/informacjainstal.com.pl\/en\/article\/the-impact-of-differences-in-defining-leakage-indicators-on-the-comparability-of-data-required-by-the-drinking-water-directive\/","title":{"rendered":"The impact of differences in defining leakage indicators on the comparability of data required by the Drinking Water Directive"},"content":{"rendered":"

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n

\n
\n
\n
\n \n
\n
\n \n Read more <\/a>\n <\/div>\n <\/div>\n\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n","protected":false},"excerpt":{"rendered":"

Recent changes in European Union legislation impose new obligations on water utilities to gather, analyse, and report
\nimpartial Key Performance Indicators (KPIs). These include data on water leakage, entity condition, energy consumption,
\nand its sources. Benchmarking has emerged as a valuable tool for collecting standardized and reliable data, facilitating
\nimprovements. Utilities in Poland participate in both national benchmarking, led by the Chamber of Commerce\u2019s \u201cPolish
\nWaterworks\u201d (IGWP), and international benchmarking through the European Benchmarking Cooperation (EBC). However,
\ndifferences in data definitions affect the comparability of indicators and the accuracy of ranking results. A crucial issue is to
\nselect the most appropriate and objective KPI for water loss. The DWD mandates the use of the Infrastructure Leakage
\nIndex (ILI), but this indicator is difficult to calculate and verify, prompting a search for simpler, standardized alternatives,
\nsuch as Non-Revenue Water (NRW). The authors compare selected KPIs from the two benchmarking projects, EBC and
\nIGWP, showing that minor definitional differences may make the comparison non-objective or impossible.<\/p>\n","protected":false},"featured_media":0,"parent":0,"menu_order":0,"template":"","meta":[],"tags":[5012,5014,3500],"tematyka":[387],"class_list":["post-24205","artykul","type-artykul","status-publish","hentry","tag-benchmarking","tag-dwd","tag-leakage","tematyka-water-supply-and-sewage-system","has-post-title","has-post-date","has-post-category","has-post-tag","has-post-comment","has-post-author",""],"ptb_metabox":{"ptb_artykul_text_1":["TOMASZ CICHO\u0143","KLARA RAMM"],"ptb_artykul_text_2":"10.36119\/15.2025.12.16","ptb_artykul_numer_miesi_cznika":"12\/2025 Instal pp.93-97","ptb_artykul_info_autor":"Tomasz Cicho\u0144 https:\/\/orcid.org\/0000- 0002-4114-6220 \u2012 Krakow University of Technology, Faculty of Environmental Engineering and Energy,\r\nPoland, tomasz.cichon@pk.edu.pl\r\nKlara Ramm https:\/\/orcid.org\/0000-0003-1707-4228 \u2012 Warsaw University of Technology, Chamber of Commerce \u201cPolish Waterworks\u201d,\r\nPoland, k.ramm@igwp.org.pl","ptb_artykul_orcid":["0000- 0002-4114-6220","0000-0003-1707-4228"]},"ptb_taxonomy":{"post_tag":[{"term_id":5012,"name":"benchmarking","slug":"benchmarking","term_group":0,"term_taxonomy_id":5012,"taxonomy":"post_tag","description":"","parent":0,"count":2,"filter":"raw"},{"term_id":5014,"name":"DWD","slug":"dwd","term_group":0,"term_taxonomy_id":5014,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":3500,"name":"leakage","slug":"leakage","term_group":0,"term_taxonomy_id":3500,"taxonomy":"post_tag","description":"","parent":0,"count":3,"filter":"raw"}],"tematyka":[{"term_id":387,"name":"Water supply and sewage system","slug":"water-supply-and-sewage-system","term_group":0,"term_taxonomy_id":387,"taxonomy":"tematyka","description":"","parent":0,"count":206,"filter":"raw"}]},"ptb_featured_image":null,"builder_content":" Read more <\/a>","_links":{"self":[{"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/artykul\/24205","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/artykul"}],"about":[{"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/types\/artykul"}],"wp:attachment":[{"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/media?parent=24205"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/tags?post=24205"},{"taxonomy":"tematyka","embeddable":true,"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/tematyka?post=24205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}