{"id":36407,"date":"2025-11-05T11:00:00","date_gmt":"2025-11-05T10:00:00","guid":{"rendered":"https:\/\/madeblue.org\/?p=36407"},"modified":"2025-11-10T12:37:51","modified_gmt":"2025-11-10T11:37:51","slug":"hoe-berekenen-wij-het-aantal-liters","status":"publish","type":"post","link":"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/","title":{"rendered":"How do we calculate the number of litres?"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\"><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<p class=\"has-text-align-center\">We&#8217;re often asked: &#8220;How do you actually calculate how many litres of clean drinking water you produce in your water projects?&#8221;<\/p>\n\n\n\n<p class=\"has-text-align-center\">That is a good question and we are happy to answer it. Because at Made Blue Foundation everything revolves around transparency: we want to deliver on every litre we promise.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\"><\/div>\n<\/div>\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"805\" height=\"575\" src=\"https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Students-Fetching-Water.jpg\" alt=\"\" class=\"wp-image-36196 size-full\" srcset=\"https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Students-Fetching-Water.jpg 805w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Students-Fetching-Water-600x429.jpg 600w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Students-Fetching-Water-768x549.jpg 768w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Students-Fetching-Water-200x143.jpg 200w\" sizes=\"auto, (max-width: 805px) 100vw, 805px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<h3 class=\"wp-block-heading\">Data from water projects<\/h3>\n\n\n\n<p>To calculate how much clean drinking water a Made Blue water project produces, we look at three things:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><em><strong>What type<\/strong> of facility is being constructed?<\/em><\/li>\n\n\n\n<li><em><strong>How many people <\/strong>will use that on a daily basis?<\/em><\/li>\n\n\n\n<li><em><strong>How long<\/strong> can the facility function reliably?<\/em><\/li>\n<\/ul>\n\n\n\n<p>We base our calculations on official figures, technical measurements, and realistic lifespans\u2014not on theoretical maximum capacity. We also deduct 20% from the calculated litres to avoid counting litres that are wasted in practice. <\/p>\n<\/div><\/div>\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile is-image-fill-element\"><div class=\"wp-block-media-text__content\">\n<h3 class=\"wp-block-heading\">Amount of water per type of water supply<\/h3>\n\n\n\n<p class=\"has-text-align-left\">To ensure fair and comparable calculations, we also work with fixed assumptions for different types of facilities:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hand pumps: 20 litres per person per day.<\/li>\n\n\n\n<li>Schools: 5 litres per pupil per day.<\/li>\n\n\n\n<li>House connections: 60 litres per person per day.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-left\">These values \u200b\u200bhave been deliberately chosen to be conservative \u2013 better to be a little too cautious than too optimistic. This way we can be sure that every reported liter is actually delivered.<\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/madeblue.org\/wp-content\/uploads\/2025\/09\/Bangladesh-Max-Tapwater-woman-cleaning-at-home-1024x683.jpg\" alt=\"\" class=\"wp-image-34337 size-full\" style=\"object-position:50% 50%\" srcset=\"https:\/\/madeblue.org\/wp-content\/uploads\/2025\/09\/Bangladesh-Max-Tapwater-woman-cleaning-at-home-1024x683.jpg 1024w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/09\/Bangladesh-Max-Tapwater-woman-cleaning-at-home-600x400.jpg 600w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/09\/Bangladesh-Max-Tapwater-woman-cleaning-at-home-768x512.jpg 768w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/09\/Bangladesh-Max-Tapwater-woman-cleaning-at-home-1536x1024.jpg 1536w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/09\/Bangladesh-Max-Tapwater-woman-cleaning-at-home-2048x1365.jpg 2048w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/09\/Bangladesh-Max-Tapwater-woman-cleaning-at-home-200x133.jpg 200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"692\" src=\"https:\/\/madeblue.org\/wp-content\/uploads\/2025\/10\/UGANDA-people-collecting-water-LOW-RES-WP-1024x692.jpeg\" alt=\"\" class=\"wp-image-35828 size-full\" srcset=\"https:\/\/madeblue.org\/wp-content\/uploads\/2025\/10\/UGANDA-people-collecting-water-LOW-RES-WP-1024x692.jpeg 1024w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/10\/UGANDA-people-collecting-water-LOW-RES-WP-600x405.jpeg 600w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/10\/UGANDA-people-collecting-water-LOW-RES-WP-768x519.jpeg 768w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/10\/UGANDA-people-collecting-water-LOW-RES-WP-1536x1038.jpeg 1536w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/10\/UGANDA-people-collecting-water-LOW-RES-WP-200x135.jpeg 200w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/10\/UGANDA-people-collecting-water-LOW-RES-WP.jpeg 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<h3 class=\"wp-block-heading\">How many people use the water?<\/h3>\n\n\n\n<p>Our implementing partners have decades of expertise and work closely with local governments and regional water authorities. They know exactly how many people live in a village or neighborhood, how many students attend a school, and how many of them depend on a single water point.  <\/p>\n\n\n\n<p>They also know how much a pump, source, or pipeline can realistically deliver at the location where it becomes available. They then consider capacity, water supply, seasons, and usage patterns.  <\/p>\n<\/div><\/div>\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile\"><div class=\"wp-block-media-text__content\">\n<h3 class=\"wp-block-heading\">The lifespan of a water supply<\/h3>\n\n\n\n<p>For our calculations, we use an average project impact of 15 years. This aligns with international guidelines for rural water supply systems, as used by organizations such as UNICEF, IRC WASH, and the World Bank, provided maintenance and management are guaranteed. <\/p>\n\n\n\n<p>Components like pumps and batteries have a shorter lifespan and typically need replacing after 5 to 10 years. We incorporate this into our project plans and pay for it through local management models and water tariffs. <\/p>\n\n\n\n<p>Heavier infrastructure\u2014such as pipelines, concrete platforms, or reservoirs\u2014can often last 20 to 30 years or longer with proper use and maintenance. In short: 15 years isn&#8217;t a guarantee, but a conservative estimate. <\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Construction-of-Kola-Tree-Water-Kiosk-in-Freetown-Sierra-Leone.jpg\" alt=\"\" class=\"wp-image-36059 size-full\" srcset=\"https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Construction-of-Kola-Tree-Water-Kiosk-in-Freetown-Sierra-Leone.jpg 800w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Construction-of-Kola-Tree-Water-Kiosk-in-Freetown-Sierra-Leone-600x450.jpg 600w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Construction-of-Kola-Tree-Water-Kiosk-in-Freetown-Sierra-Leone-768x576.jpg 768w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Construction-of-Kola-Tree-Water-Kiosk-in-Freetown-Sierra-Leone-200x150.jpg 200w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure><\/div>\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-group alignfull has-lightgray-background-color has-background\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div style=\"height:60px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"803\" height=\"533\" src=\"https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Verifing-the-water-taps-freetown-sierra-leone.jpg\" alt=\"\" class=\"wp-image-36202 size-full\" srcset=\"https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Verifing-the-water-taps-freetown-sierra-leone.jpg 803w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Verifing-the-water-taps-freetown-sierra-leone-600x398.jpg 600w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Verifing-the-water-taps-freetown-sierra-leone-768x510.jpg 768w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/11\/Verifing-the-water-taps-freetown-sierra-leone-200x133.jpg 200w\" sizes=\"auto, (max-width: 803px) 100vw, 803px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<h3 class=\"wp-block-heading\">From tap to litres in practice<\/h3>\n\n\n\n<p>We also check our calculations in practice because the theoretical capacity is certainly not always achieved in practice.<\/p>\n\n\n\n<p>Imagine a public water supply with a borehole, a pump and ten taps. In principle, a tap can fill a 20-litre jerry can 240 times a day \u2013 that&#8217;s 4,800 litres per tap per day.<\/p>\n\n\n\n<p>But in reality, the pump sets the limit: it can deliver about 1,000 litres per hour. <\/p>\n\n\n\n<p>Since people usually only collect water during the day \u2013 about 12 hours a day \u2013 the total capacity amounts to 12,000 litres per day. That is much lower than the theoretical 48,000 litres.<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:60px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/div>\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile\"><div class=\"wp-block-media-text__content\">\n<h3 class=\"wp-block-heading\">Count, compare and adjust<\/h3>\n\n\n\n<p>We continuously monitor which water supplies our projects have actually delivered upon completion. We use this to calculate the litres for the next 15 years, after which we deduct another 20% because something can always go wrong.<\/p>\n\n\n\n<p>We add up all those litres to one big, global water balance. We always compare these with the number of liters we have promised to achieve to our donors. This way we can be sure that the figures are correct \u2013 and that every litre we communicate actually flows from a tap somewhere in the world.<\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/madeblue.org\/wp-content\/uploads\/2024\/11\/website_0002_hotel-data-charting-results-1024x768.jpg\" alt=\"Hotel Data Charting Results\" class=\"wp-image-31921 size-full\" srcset=\"https:\/\/madeblue.org\/wp-content\/uploads\/2024\/11\/website_0002_hotel-data-charting-results-1024x768.jpg 1024w, https:\/\/madeblue.org\/wp-content\/uploads\/2024\/11\/website_0002_hotel-data-charting-results-600x450.jpg 600w, https:\/\/madeblue.org\/wp-content\/uploads\/2024\/11\/website_0002_hotel-data-charting-results-768x576.jpg 768w, https:\/\/madeblue.org\/wp-content\/uploads\/2024\/11\/website_0002_hotel-data-charting-results-200x150.jpg 200w, https:\/\/madeblue.org\/wp-content\/uploads\/2024\/11\/website_0002_hotel-data-charting-results.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/madeblue.org\/wp-content\/uploads\/2025\/09\/Bangladesh-Max-Tapwater-Water-neworks-for-clean-drinking-water-2-1024x683.jpg\" alt=\"\" class=\"wp-image-34343 size-full\" srcset=\"https:\/\/madeblue.org\/wp-content\/uploads\/2025\/09\/Bangladesh-Max-Tapwater-Water-neworks-for-clean-drinking-water-2-1024x683.jpg 1024w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/09\/Bangladesh-Max-Tapwater-Water-neworks-for-clean-drinking-water-2-600x400.jpg 600w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/09\/Bangladesh-Max-Tapwater-Water-neworks-for-clean-drinking-water-2-768x512.jpg 768w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/09\/Bangladesh-Max-Tapwater-Water-neworks-for-clean-drinking-water-2-1536x1024.jpg 1536w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/09\/Bangladesh-Max-Tapwater-Water-neworks-for-clean-drinking-water-2-2048x1365.jpg 2048w, https:\/\/madeblue.org\/wp-content\/uploads\/2025\/09\/Bangladesh-Max-Tapwater-Water-neworks-for-clean-drinking-water-2-200x133.jpg 200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<h3 class=\"wp-block-heading\">Transparency as a starting point<\/h3>\n\n\n\n<p>For each project, we clarify which assumptions we use, which losses have been included, and what our figures are based on. This way, donors can trust that every litre in our reports is not just a calculation, but a real litre of clean drinking water, delivered to people who really need it. <\/p>\n\n\n\n<p>An independent board oversees this, because transparency is central to Made Blue \u2013 from source to tap, and from litre to life.<\/p>\n<\/div><\/div>\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-cover alignfull\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" class=\"wp-block-cover__image-background wp-image-30550 size-large\" alt=\"Smiling black african schoolboy drinking from a tap outside\" src=\"https:\/\/madeblue.org\/wp-content\/uploads\/2024\/09\/AdobeStock_506064486-klein-gespiegeld-1024x683.jpg\" style=\"object-position:50% 23%\" data-object-fit=\"cover\" data-object-position=\"50% 23%\" srcset=\"https:\/\/madeblue.org\/wp-content\/uploads\/2024\/09\/AdobeStock_506064486-klein-gespiegeld-1024x683.jpg 1024w, https:\/\/madeblue.org\/wp-content\/uploads\/2024\/09\/AdobeStock_506064486-klein-gespiegeld-600x400.jpg 600w, https:\/\/madeblue.org\/wp-content\/uploads\/2024\/09\/AdobeStock_506064486-klein-gespiegeld-768x512.jpg 768w, https:\/\/madeblue.org\/wp-content\/uploads\/2024\/09\/AdobeStock_506064486-klein-gespiegeld-200x133.jpg 200w, https:\/\/madeblue.org\/wp-content\/uploads\/2024\/09\/AdobeStock_506064486-klein-gespiegeld.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-black-background-color has-background-dim-20 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<div class=\"wp-block-group alignfull has-white-color has-text-color has-link-color wp-elements-fff0c1f0a78d5779bf6adad243852375\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\"><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div style=\"height:60px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center show-for-medium has-white-color has-text-color has-link-color wp-elements-97c7ccae299667df6397811c379a910d\">Make litres of water available too<\/h3>\n\n\n\n<p class=\"has-text-align-center\" style=\"font-style:normal;font-weight:600\">Convert the water you save, use, serve or sell with your company into the same number of litres of clean drinking water in developing countries.<\/p>\n\n\n\n<p class=\"has-text-align-center\" style=\"font-style:normal;font-weight:600\">This way, you make a tangible impact and increase your company&#8217;s meter reading. There&#8217;s more ways to support us than you might think.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-secondary\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/madeblue.org\/en\/\">View all options<\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:60px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\"><\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>We&#8217;re often asked: &#8220;How do you actually calculate how many litres of clean drinking water you produce in your water projects?&#8221; We&#8217;re happy to answer that question.<\/p>\n","protected":false},"author":2,"featured_media":31921,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[630],"tags":[],"class_list":["post-36407","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-hotels"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How do we calculate the number of litres?<\/title>\n<meta name=\"description\" content=\"We&#039;re often asked: &quot;How do you actually calculate how many litres of clean drinking water you produce in your water projects?&quot;\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How do we calculate the number of litres?\" \/>\n<meta property=\"og:description\" content=\"We&#039;re often asked: &quot;How do you actually calculate how many litres of clean drinking water you produce in your water projects?&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/\" \/>\n<meta property=\"og:site_name\" content=\"Made Blue Foundation\" \/>\n<meta property=\"article:published_time\" content=\"2025-11-05T10:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-10T11:37:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/madeblue.org\/wp-content\/uploads\/2024\/11\/website_0002_hotel-data-charting-results.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Frank van der Tang\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Frank van der Tang\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/hoe-berekenen-wij-het-aantal-liters\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/hoe-berekenen-wij-het-aantal-liters\\\/\"},\"author\":{\"name\":\"Frank van der Tang\",\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/#\\\/schema\\\/person\\\/3c568ed4fe76cd6764e2f63c9a8151bf\"},\"headline\":\"How do we calculate the number of litres?\",\"datePublished\":\"2025-11-05T10:00:00+00:00\",\"dateModified\":\"2025-11-10T11:37:51+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/hoe-berekenen-wij-het-aantal-liters\\\/\"},\"wordCount\":742,\"publisher\":{\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/hoe-berekenen-wij-het-aantal-liters\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/madeblue.org\\\/wp-content\\\/uploads\\\/2024\\\/11\\\/website_0002_hotel-data-charting-results.jpg\",\"articleSection\":[\"News Hotels\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/hoe-berekenen-wij-het-aantal-liters\\\/\",\"url\":\"https:\\\/\\\/madeblue.org\\\/en\\\/hoe-berekenen-wij-het-aantal-liters\\\/\",\"name\":\"How do we calculate the number of litres?\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/hoe-berekenen-wij-het-aantal-liters\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/hoe-berekenen-wij-het-aantal-liters\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/madeblue.org\\\/wp-content\\\/uploads\\\/2024\\\/11\\\/website_0002_hotel-data-charting-results.jpg\",\"datePublished\":\"2025-11-05T10:00:00+00:00\",\"dateModified\":\"2025-11-10T11:37:51+00:00\",\"description\":\"We're often asked: \\\"How do you actually calculate how many litres of clean drinking water you produce in your water projects?\\\"\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/hoe-berekenen-wij-het-aantal-liters\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/madeblue.org\\\/en\\\/hoe-berekenen-wij-het-aantal-liters\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/hoe-berekenen-wij-het-aantal-liters\\\/#primaryimage\",\"url\":\"https:\\\/\\\/madeblue.org\\\/wp-content\\\/uploads\\\/2024\\\/11\\\/website_0002_hotel-data-charting-results.jpg\",\"contentUrl\":\"https:\\\/\\\/madeblue.org\\\/wp-content\\\/uploads\\\/2024\\\/11\\\/website_0002_hotel-data-charting-results.jpg\",\"width\":1200,\"height\":900,\"caption\":\"Hotel Data Charting Results\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/hoe-berekenen-wij-het-aantal-liters\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/madeblue.org\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"How do we calculate the number of litres?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/madeblue.org\\\/en\\\/\",\"name\":\"Made Blue Foundation\",\"description\":\"Schoon drinkwater voor iedereen\",\"publisher\":{\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/madeblue.org\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/#organization\",\"name\":\"Made Blue Foundation\",\"url\":\"https:\\\/\\\/madeblue.org\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/madeblue.org\\\/wp-content\\\/uploads\\\/Logo-MadeBlue_outl_blue_oneline.jpg\",\"contentUrl\":\"https:\\\/\\\/madeblue.org\\\/wp-content\\\/uploads\\\/Logo-MadeBlue_outl_blue_oneline.jpg\",\"width\":2362,\"height\":398,\"caption\":\"Made Blue Foundation\"},\"image\":{\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/madeblue.org\\\/en\\\/#\\\/schema\\\/person\\\/3c568ed4fe76cd6764e2f63c9a8151bf\",\"name\":\"Frank van der Tang\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4b312f4656936801c2a717a6f9c2af084cc5fdfb384e7f320f6417c114909ce9?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4b312f4656936801c2a717a6f9c2af084cc5fdfb384e7f320f6417c114909ce9?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4b312f4656936801c2a717a6f9c2af084cc5fdfb384e7f320f6417c114909ce9?s=96&d=mm&r=g\",\"caption\":\"Frank van der Tang\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"How do we calculate the number of litres?","description":"We're often asked: \"How do you actually calculate how many litres of clean drinking water you produce in your water projects?\"","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/","og_locale":"en_US","og_type":"article","og_title":"How do we calculate the number of litres?","og_description":"We're often asked: \"How do you actually calculate how many litres of clean drinking water you produce in your water projects?\"","og_url":"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/","og_site_name":"Made Blue Foundation","article_published_time":"2025-11-05T10:00:00+00:00","article_modified_time":"2025-11-10T11:37:51+00:00","og_image":[{"width":1200,"height":900,"url":"https:\/\/madeblue.org\/wp-content\/uploads\/2024\/11\/website_0002_hotel-data-charting-results.jpg","type":"image\/jpeg"}],"author":"Frank van der Tang","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Frank van der Tang","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/#article","isPartOf":{"@id":"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/"},"author":{"name":"Frank van der Tang","@id":"https:\/\/madeblue.org\/en\/#\/schema\/person\/3c568ed4fe76cd6764e2f63c9a8151bf"},"headline":"How do we calculate the number of litres?","datePublished":"2025-11-05T10:00:00+00:00","dateModified":"2025-11-10T11:37:51+00:00","mainEntityOfPage":{"@id":"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/"},"wordCount":742,"publisher":{"@id":"https:\/\/madeblue.org\/en\/#organization"},"image":{"@id":"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/#primaryimage"},"thumbnailUrl":"https:\/\/madeblue.org\/wp-content\/uploads\/2024\/11\/website_0002_hotel-data-charting-results.jpg","articleSection":["News Hotels"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/","url":"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/","name":"How do we calculate the number of litres?","isPartOf":{"@id":"https:\/\/madeblue.org\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/#primaryimage"},"image":{"@id":"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/#primaryimage"},"thumbnailUrl":"https:\/\/madeblue.org\/wp-content\/uploads\/2024\/11\/website_0002_hotel-data-charting-results.jpg","datePublished":"2025-11-05T10:00:00+00:00","dateModified":"2025-11-10T11:37:51+00:00","description":"We're often asked: \"How do you actually calculate how many litres of clean drinking water you produce in your water projects?\"","breadcrumb":{"@id":"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/#primaryimage","url":"https:\/\/madeblue.org\/wp-content\/uploads\/2024\/11\/website_0002_hotel-data-charting-results.jpg","contentUrl":"https:\/\/madeblue.org\/wp-content\/uploads\/2024\/11\/website_0002_hotel-data-charting-results.jpg","width":1200,"height":900,"caption":"Hotel Data Charting Results"},{"@type":"BreadcrumbList","@id":"https:\/\/madeblue.org\/en\/hoe-berekenen-wij-het-aantal-liters\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/madeblue.org\/en\/"},{"@type":"ListItem","position":2,"name":"How do we calculate the number of litres?"}]},{"@type":"WebSite","@id":"https:\/\/madeblue.org\/en\/#website","url":"https:\/\/madeblue.org\/en\/","name":"Made Blue Foundation","description":"Schoon drinkwater voor iedereen","publisher":{"@id":"https:\/\/madeblue.org\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/madeblue.org\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/madeblue.org\/en\/#organization","name":"Made Blue Foundation","url":"https:\/\/madeblue.org\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/madeblue.org\/en\/#\/schema\/logo\/image\/","url":"https:\/\/madeblue.org\/wp-content\/uploads\/Logo-MadeBlue_outl_blue_oneline.jpg","contentUrl":"https:\/\/madeblue.org\/wp-content\/uploads\/Logo-MadeBlue_outl_blue_oneline.jpg","width":2362,"height":398,"caption":"Made Blue Foundation"},"image":{"@id":"https:\/\/madeblue.org\/en\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/madeblue.org\/en\/#\/schema\/person\/3c568ed4fe76cd6764e2f63c9a8151bf","name":"Frank van der Tang","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/4b312f4656936801c2a717a6f9c2af084cc5fdfb384e7f320f6417c114909ce9?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/4b312f4656936801c2a717a6f9c2af084cc5fdfb384e7f320f6417c114909ce9?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/4b312f4656936801c2a717a6f9c2af084cc5fdfb384e7f320f6417c114909ce9?s=96&d=mm&r=g","caption":"Frank van der Tang"}}]}},"_links":{"self":[{"href":"https:\/\/madeblue.org\/en\/wp-json\/wp\/v2\/posts\/36407","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/madeblue.org\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/madeblue.org\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/madeblue.org\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/madeblue.org\/en\/wp-json\/wp\/v2\/comments?post=36407"}],"version-history":[{"count":7,"href":"https:\/\/madeblue.org\/en\/wp-json\/wp\/v2\/posts\/36407\/revisions"}],"predecessor-version":[{"id":36465,"href":"https:\/\/madeblue.org\/en\/wp-json\/wp\/v2\/posts\/36407\/revisions\/36465"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/madeblue.org\/en\/wp-json\/wp\/v2\/media\/31921"}],"wp:attachment":[{"href":"https:\/\/madeblue.org\/en\/wp-json\/wp\/v2\/media?parent=36407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/madeblue.org\/en\/wp-json\/wp\/v2\/categories?post=36407"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/madeblue.org\/en\/wp-json\/wp\/v2\/tags?post=36407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}