{"id":6060,"date":"2016-10-28T16:32:08","date_gmt":"2016-10-28T14:32:08","guid":{"rendered":"https:\/\/www.kwrwater.nl\/en\/?p=6060"},"modified":"2016-11-01T15:57:01","modified_gmt":"2016-11-01T14:57:01","slug":"unique-citizen-science-project-concludes-amsterdams-tap-water-is-fresh","status":"publish","type":"post","link":"https:\/\/www.kwrwater.nl\/en\/actueel\/unique-citizen-science-project-concludes-amsterdams-tap-water-is-fresh\/","title":{"rendered":"Unique citizen science project concludes: Amsterdam\u2019s tap water is fresh"},"content":{"rendered":"
\n

On Tuesday evening, 26 October, Amsterdam citizen scientists, KWR professional researchers and numerous other interested people gathered in the city\u2019s Pakhuis de Zwijger for the final meeting of the \u2018Freshness of Water\u2019 field pilot project. KWR researchers Paul van der Wielen and Stijn Brouwer, together with Waternet, launched this first citizen science field pilot in the Dutch drinking water sector.<\/p>\n<\/div>\n

Freshness of Water<\/h2>\n

Fifty Amsterdam citizen scientists took part in the Freshness of Water field pilot, after having been selected during a short but successful recruitment campaign on Facebook. These individuals not only sampled their drinking water in various ways, they also worked at home on growing and counting bacteria. During the course of the research they continuously received new research results to which they could respond. Social scientist Stijn Brouwer says that \u2018for KWR citizen science is an interesting way of connecting with the citizen. It fits in with our socio-scientific research into the position of water companies in a changing society. One of the changes is the growing empowerment of citizens.\u2019 Although many people consider water a low-interest product, KWR\u2019s research shows that water company customers are becoming increasingly aware and engaged. \u2018By working together with citizens in collecting knowledge,\u2019 says Brouwer, \u2018we also get a better understanding of their desires and needs. For the water companies these citizen scientists can become drinking water ambassadors. One nice result of this project is that, despite the fact that the participants discovered that their drinking water contains a great variety of bacteria, their trust in the drinking water quality and in the water company has grown.\u2019<\/p>\n

\"20161026_194103562_ios\"

Group photo of Amsterdam citizen and professional scientists.<\/p><\/div>\n

Experience with citizen science<\/h2>\n

For project manager Jos Frijns \u2018this project could also have been conceived by an active citizen or organisation, outside the ambit of the water company or of science. If such an outside source had then revealed that drinking water contains numerous bacteria, and we had responded that we were already aware of this and that it presented no problem because there are no pathogens among them, then we\u2019d find ourselves in a defensive position: we\u2019d be one down from the start. If only for this reason, it\u2019s good that we have been able to use this project to discover what citizen science means. And we are going to take it further, together with the water company. It would be great if this were to enhance the scientific awareness of citizens, and thereby their trust in our research as well.\u2019<\/p>\n

\"20161026_192027746_ios\"

Jos Frijns (KWR researcher), De Zwijger facilitator Natasja van den Berg, and Renze van Houten (Director, Drinking Water & Wastewater, Waternet) take questions from the floor.<\/p><\/div>\n

A clearer picture of Amsterdam\u2019s drinking water<\/h2>\n

Apart from its socio-scientific objective, the citizen science project also had a scientific one. The key research questions KWR microbiologist Paul van der Wielen wanted to see answered by the project were:<\/p>\n

    \n
  1. Is drinking water a fresh product?<\/li>\n
  2. What is the bacterial composition (microbiome) of Amsterdam\u2019s drinking water?<\/li>\n
  3. How does the bacterial composition change during the transport of the drinking water to the customer?<\/li>\n
  4. Is the bacterial population of the drinking water produced in the west of the city different from that produced in the east of the city?<\/li>\n<\/ol>\n

    Citizen science and new techniques<\/h2>\n

    To answer these research questions the citizen scientists sampled their drinking water early in the morning before any drinking water had been used in the house, then five minutes after the water had been left to flow from the tap (so that the sample would be taken from the distribution system at street level); they also took an own water sample which usually involved drinking water that had been stored for a while in a bottle, glass or bidon. The citizens themselves grew the bacteria from these samples and recorded their numbers, while KWR determined the total bacterial count and the bacterial composition. The institute did the latter using Next Generation Sequencing, which enables the classification of millions of bacteria at the DNA level.<\/p>\n

    \"20161026_185040943_ios\"

    Paul van der Wielen explains the bacterial species and counts he detected in the Amsterdam drinking water samples.<\/p><\/div>\n

    Few bacteria in the water<\/h2>\n
    \n

    The results of the tests show that the biomass and total count of the bacteria grown by the citizen scientists were low in the case of drinking water samples taken after a five-minute flow. These parameters increase slightly when the drinking water has resided overnight in the home\u2019s drinking water installation, and increase significantly when the water is kept in a bottle, glass or bidon.<\/p>\n<\/div>\n

    But of a great variety<\/h2>\n
    The results of the Next Generation Sequencing show that Amsterdam\u2019s drinking water contains more than 51,000 bacterial species, which is a lot more than are detected in other countries where the drinking water is chlorinated. The drinking water sampled immediately or following a five-minute flow contained bacteria that for the most part (30-50%) are still unknown, so we don\u2019t know what function\u00a0 they have in the drinking water.<\/div>\n

    Hardly any change during transport<\/h2>\n
    The drinking water\u2019s bacterial composition during its transport to the customer practically doesn\u2019t change at all, though it does change a little during the water\u2019s overnight residence in the building\u2019s drinking water installation. However, the bacterial composition changes drastically during the time that the drinking water is kept in a bottle, glass or bidon.<\/div>\n

    Slight difference between eastern and western water<\/h2>\n
    The bacterial composition of the drinking water produced in the east of the city is very similar to that produced in the west. There is however one bacterial group, Burkholderiales, that is more present in the eastern than it is in the western drinking water.<\/div>\n

    Conclusion: fresh drinking water<\/h2>\n
    The research results led us to conclude that involving citizens in water sector research both works and is worthwhile. Moreover, partly thanks to the efforts of the citizen scientists involved, we can conclude that drinking water is a fresh product, which changes when it is kept in a bottle, glass or bidon. Despite these changes, it is still safe to drink water kept in this way, but the tap remains the best source of the freshest water.<\/div>\n
    \n
    \"20161026_182116262_ios\"

    Stijn Brouwer speaks about the initial socio-scientific insights delivered by the field pilot.<\/p><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

    On Tuesday evening, 26 October, Amsterdam citizen scientists, KWR professional researchers and numerous other interested people gathered in the city\u2019s Pakhuis de Zwijger for the final meeting of the \u2018Freshness of Water\u2019 field pilot project. KWR researchers Paul…<\/p>\n","protected":false},"author":6,"featured_media":6026,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[7,9],"tags":[],"class_list":["post-6060","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-watersector-en","category-news","gtag-bto-en","gtag-drinking-water","gtag-citizen-participation","gtag-governance-en","gtag-year-review-2016","gtag-citizen-science-en"],"acf":[],"yoast_head":"\nUnique citizen science project concludes: Amsterdam\u2019s tap water is fresh - KWR<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kwrwater.nl\/en\/actueel\/unique-citizen-science-project-concludes-amsterdams-tap-water-is-fresh\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Unique citizen science project concludes: Amsterdam\u2019s tap water is fresh - KWR\" \/>\n<meta property=\"og:description\" content=\"On Tuesday evening, 26 October, Amsterdam citizen scientists, KWR professional researchers and numerous other interested people gathered in the city\u2019s Pakhuis de Zwijger for the final meeting of the \u2018Freshness of Water\u2019 field pilot project. 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