{"id":1335301,"date":"2025-06-20T14:06:51","date_gmt":"2025-06-20T12:06:51","guid":{"rendered":"https:\/\/klimapaktfirbetriber.lu\/mesures\/recuperation-de-leau-de-pluie-dans-lentreprise\/"},"modified":"2026-03-18T10:54:12","modified_gmt":"2026-03-18T09:54:12","slug":"recuperation-de-leau-de-pluie-dans-lentreprise","status":"publish","type":"mesures","link":"https:\/\/www.klimapaktfirbetriber.lu\/en\/measures\/recuperation-de-leau-de-pluie-dans-lentreprise\/","title":{"rendered":"Rainwater harvesting at the company"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><strong>Rainwater harvesting and use<\/strong><\/h2>\n\n\n\n<p>Faced with ever-dwindling water resources, using rainwater represents a responsible a sustainable choice. Rainwater is a sustainable resource that can be harnessed in many ways to reduce drinking water consumption and save money. <\/p>\n\n\n\n<p>Implementing a rainwater harvesting system supports environmental objectives by offering an ecological and responsible alternative to conventional water use<\/p>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"type-numerotation\"><span class=\"type-numerotation-span visually-hidden\"><\/span>Analysis of the current situation<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. Analysis of rainwater harvesting potential<\/h3>\n\n\n\n<p>A preliminary study of the roof and available storage capacity is essential to&nbsp; accurately assess the potential for rainwater harvesting. This initial assessment should identify the most suitable technological options and facilitate the integration of rainwater recovery systems into existing infrastructure. Depending on the complexity of the project, it is recommended to engage a specialised consulting firm for an analysis.<\/p>\n\n\n\n<p>Key elements to assess the feasibility:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Measure the surface area of rooftops that can be connected to the system and estimate the harvesting potential (average annual rainfall in Luxembourg is approx. 850l\/m2).<\/li>\n\n\n\n<li>Identify the types of roofing materials used, and asses the condition of gutters and downpipes to ensure adequate rainwater quality and flow.<\/li>\n\n\n\n<li>Determine the best location to accommodate the water storage equipment.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. Identifying uses where drinking water can be replaced by rainwater:<\/h3>\n\n\n\n<p>Common uses of rainwater include flushing indoor toilets, watering gardens, cleaning outdoor surfaces, or washing vehicles.<\/p>\n\n\n\n<p>There are also many other valuable opportunities to use harvested rainwater and reduce the company\u2019s consumption of drinking water.<\/p>\n\n\n\n<h2 class=\"type-numerotation\"><span class=\"type-numerotation-span visually-hidden\"><\/span>Implementation of measure<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Method<\/h3>\n\n\n\n<p>Depending on the complexity of integrating the water harvesting system, it is advisable to consult a <a href=\"https:\/\/www.fgt.lu\/fr\/nos-membres\/?selectCat=Installateur%2BChauffage%2BSanitaire-Frigoriste-Ventilation&amp;searchKeywords=\" target=\"_blank\" rel=\"noreferrer noopener\">qualified craftsman (heating installer)<\/a> to carry out the project.<\/p>\n\n\n\n<p>A rainwater harvesting system typically consists of the following main components:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Catchment system:<\/strong><strong> <\/strong>Includes roof surfaces, gutters, and downpipes.<\/li>\n\n\n\n<li><strong>Filtration system:<\/strong><strong> <\/strong>Consisting of coarse filters to remove leaves, branches etc., as well as finer filters to ensure the quality of the water stored in the tank.<\/li>\n\n\n\n<li><strong>Storage system:<\/strong><strong> <\/strong>Includes one (or more) storage tank(s) depending on needs and available space above or under ground level.<\/li>\n\n\n\n<li><strong>Distribution system: <\/strong>Pumps and pipes for the distribution of stored water to the draw-off points.<br><strong><em>Note<\/em><\/strong><em>: This operates through a separate distribution network to ensure there is no risk of it mixing with drinking water.<\/em><\/li>\n\n\n\n<li><strong>Management and control:<\/strong><strong> <\/strong>A control unit uses measurement and control elements to optimally manage the rainwater supply. The integration of meters is essential to monitor the installation and ensure proper operation.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-group has-light-green-background-color has-background\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p><a href=\"https:\/\/www.klima-agence.lu\/en\/water-consumption-compagnies-strategic-issue\" data-type=\"link\" data-id=\"https:\/\/www.klima-agence.lu\/en\/water-consumption-compagnies-strategic-issue\" target=\"_blank\" rel=\"noopener\">Further information: A collection of basic recommendations for rooftop rainwater harvesting projects is available here<\/a><\/p>\n<\/div><\/div>\n\n\n\n<h2 class=\"type-numerotation\"><span class=\"type-numerotation-span visually-hidden\"><\/span>State subsidy application<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">State subsidies<\/h3>\n\n\n\n<p class=\"has-light-green-background-color has-background\"><strong><strong>Please note: any application for government or non-government subsidies must comply with the \u201cincentive effect\u201d, subject to compliance with the subsidy conditions.<\/strong><\/strong><br>In order to respect the \u201cincentive effect\u201d, no binding commitment (signing a quotation; paying a deposit) may be made BEFORE having received the agreement in principle from the State or the electricity and natural gas supplier following an application for subsidy.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><a href=\"https:\/\/guichet.public.lu\/en\/entreprises\/financement-aides\/regime-sme-packages\/soutien-pme\/sme-packages-sustainability.html\" target=\"_blank\" rel=\"noreferrer noopener\">SME Packages &#8211; Sustainability<\/a> (Analysis and\/or implementation of measures)<\/h4>\n\n\n\n<p>Subsidy for small and medium-sized companies, covering up to 70% of eligible costs for carrying out a project aimed at reducing their environmental impact. The total project cost must be between \u20ac3.000 and \u20ac25.000 excluding VAT.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>For any questions:\n<ul class=\"wp-block-list\">\n<li><a href=\"mailto:ehandwierk@cdm.lu\" target=\"_blank\" rel=\"noreferrer noopener\">Chambre des M\u00e9tiers<\/a> for the craftsmen (Chamber of Skilled Trades and Crafts)<\/li>\n\n\n\n<li><a href=\"mailto:sustainability@cc.lu\" target=\"_blank\" rel=\"noreferrer noopener\">Chambre de Commerce<\/a> for companies in the non-craft sectors<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"has-light-green-background-color has-background\"><strong>N.B. State subsidies cannot be combined for the same project.<\/strong><\/p>\n\n\n<h4><a href=\"https:\/\/guichet.public.lu\/en\/entreprises\/fiscalite\/bonification-impot-investissement\/bonification-transition-ecologique-energetique.html\" target=\"_blank\" rel=\"noopener\">Tax relief for investment in an ecological and energy transition project<\/a><\/h4>\n<p>The tax relief is calculated based on the investments and operating expenses incurred as part of an ecological and energy transition project.<br \/>\nThe tax relief rate is set at 18% and is applied directly to the amount of tax due.<br \/>\nThis deduction can be combined with standard state subsidies.<\/p>\n<p>For the project to be eligible, it must meet at least one of the following objectives:<\/p>\n<ul>\n<li>Improve the energy efficiency of a production process<\/li>\n<li>Improve the material efficiency of a production process<\/li>\n<li>Decarbonise a production process<\/li>\n<li>Reduce air pollution at the production site (excluding CO2 emissions)<\/li>\n<li>Produce or store renewable energy for self-consumption<\/li>\n<li>Promote the extended use of products through reuse<\/li>\n<\/ul>\n<p>For certain objectives, minimum thresholds must be met.<br \/>\nTo verify your eligibility and ensure that these thresholds are satisfied, it is recommended that the impact of the measure on one of the above conditions be certified by an expert or a design office.<\/p>\n<p>Further details and conditions: <a href=\"https:\/\/guichet.public.lu\/en\/entreprises\/fiscalite\/bonification-impot-investissement\/bonification-transition-ecologique-energetique.html\" target=\"_blank\" rel=\"noopener\">Guichet.lu<\/a><br \/>\nFor questions: <a href=\"mailto:bonification@eco.etat.lu\">Ministry of Economy \u2013 Bonus<\/a><\/p>\n<div class=\"wp-block-group has-light-green-background-color has-background\">\n<div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">This type of project may be eligible, provided that the implemented project relates to the company\u2019s main economic activity, the eligibility thresholds are met, and that all other criteria set out in Article 152bis L.I.R. are complied with.<\/div>\n<\/div>\n\n\n\n\n<h2 class=\"type-numerotation\"><span class=\"type-numerotation-span visually-hidden\"><\/span>Monitoring and maintenance<\/h2>\n\n\n\n<p>Regular maintenance of the facilities, along with continuous monitoring, ensures smooth operation and maximum efficiency.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"featured_media":1333966,"parent":0,"template":"","secteur":[74,129,138,142,76,123,67,77,132,69,68,72,62,71,73],"thematique":[98],"application":[145],"class_list":["post-1335301","mesures","type-mesures","status-publish","has-post-thumbnail","hentry","secteur-administration","secteur-boulanger-en","secteur-grocery-shop","secteur-food-trade","secteur-agriculture-viticulture","secteur-butcher-craft-industry","secteur-horeca-en","secteur-aid-and-care-sector","secteur-carpentry","secteur-commerce-en","secteur-construction-en","secteur-workshop","secteur-craft-industry","secteur-manufacturing","secteur-transport","thematique-resources","application-eau-en"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.klimapaktfirbetriber.lu\/en\/wp-json\/wp\/v2\/mesures\/1335301","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.klimapaktfirbetriber.lu\/en\/wp-json\/wp\/v2\/mesures"}],"about":[{"href":"https:\/\/www.klimapaktfirbetriber.lu\/en\/wp-json\/wp\/v2\/types\/mesures"}],"version-history":[{"count":6,"href":"https:\/\/www.klimapaktfirbetriber.lu\/en\/wp-json\/wp\/v2\/mesures\/1335301\/revisions"}],"predecessor-version":[{"id":2812143,"href":"https:\/\/www.klimapaktfirbetriber.lu\/en\/wp-json\/wp\/v2\/mesures\/1335301\/revisions\/2812143"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.klimapaktfirbetriber.lu\/en\/wp-json\/wp\/v2\/media\/1333966"}],"wp:attachment":[{"href":"https:\/\/www.klimapaktfirbetriber.lu\/en\/wp-json\/wp\/v2\/media?parent=1335301"}],"wp:term":[{"taxonomy":"secteur","embeddable":true,"href":"https:\/\/www.klimapaktfirbetriber.lu\/en\/wp-json\/wp\/v2\/secteur?post=1335301"},{"taxonomy":"thematique","embeddable":true,"href":"https:\/\/www.klimapaktfirbetriber.lu\/en\/wp-json\/wp\/v2\/thematique?post=1335301"},{"taxonomy":"application","embeddable":true,"href":"https:\/\/www.klimapaktfirbetriber.lu\/en\/wp-json\/wp\/v2\/application?post=1335301"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}