CINXE.COM
Facilities - Guernsey Water
<!DOCTYPE html> <html> <head> <title>Facilities - Guernsey Water</title> <base href="https://www.water.gg/" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta http-equiv="Content-Script-Type" content="text/javascript" /> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1.0, user-scalable=0" /> <meta name="generator" content="GOSS iCM - Intelligent Content Management" /> <meta name="DC.format.medium" content="html/text" /> <meta name="DC.date.created" content="2017-05-23T12:58:17+01:00" scheme="W3CDTF" /> <meta name="DC.date.issued" content="2017-05-23T11:19:32+01:00" scheme="W3CDTF" /> <meta name="DC.date.modified" content="2019-09-25T09:37:28+01:00" scheme="W3CDTF" /> <meta name="DC.date.disposal.review" content="2116-05-23T11:19:32+01:00" scheme="W3CDTF" /> <meta name="eGMS.accessibility" content="a" scheme="eGMS.WCAG20" /> <meta name="DC.title" content="Facilities" /> <meta name="DC.description" content="Guernsey Water's property assets include water treatment works; raw water storage reservoirs; raw water, foul water and surface water pumping stations; service (treated water storage) reservoirs; a water tower; wells; an operational depot; a wastewater treatment centre; three sea outfalls; many kilometers of foul and surface water sewer, and raw/treated water main; and various other pieces of property and land." /> <meta name="description" content="Guernsey Water's property assets include water treatment works; raw water storage reservoirs; raw water, foul water and surface water pumping stations; service (treated water storage) reservoirs; a water tower; wells; an operational depot; a wastewater treatment centre; three sea outfalls; many kilometers of foul and surface water sewer, and raw/treated water main; and various other pieces of property and land." /> <meta name="DC.identifier" content="https://www.water.gg/facilities" scheme="DCTERMS.URI" /> <meta name="DC.language" content="en" scheme="ISO 639-3/T" /> <meta name="DC.rights.copyright" content="Copyright 2025 Guernsey Water" /> <meta name="DC.type" content="accounts" scheme="eGMS.TES" /> <meta name="DC.Audience" content="carers" /> <meta name="DC.contributor" content="PO Box 23, St Peter Port, Guernsey, GY1 3AN, Channel Islands" /> <meta name="DC.creator" content="PO Box 23, St Peter Port, Guernsey, GY1 3AN, Channel Islands" /> <meta name="DC.publisher" content="PO Box 23, St Peter Port, Guernsey, GY1 3AN, Channel Islands" /> <link rel="apple-touch-icon" sizes="180x180" href="./guernseywater1/images/apple-touch-icon.png"> <link rel="icon" type="image/png" href="./guernseywater1/images/favicon-32x32.png" sizes="32x32"> <link rel="icon" type="image/png" href="./guernseywater1/images/favicon-16x16.png" sizes="16x16"> <link rel="manifest" href="./guernseywater1/images/manifest.json"> <link rel="mask-icon" href="./guernseywater1/images/safari-pinned-tab.svg" color="#5bbad5"> <link rel="shortcut icon" href="./guernseywater1/images/favicon.ico"> <meta name="msapplication-config" content="./guernseywater1/images/browserconfig.xml"> <meta name="theme-color" content="#ffffff"> <script type="text/javascript" src="./guernseywater1/scripts/jquery/jquery-1.11.3.min.js"></script><script type="text/javascript" src="./guernseywater1/scripts/jquery/jquery.cookie.js"></script><script type="text/javascript" src="./guernseywater1/scripts/moment.min.js"></script><script type="text/javascript" src="./guernseywater1/scripts/modernizr.js"></script><script type="text/javascript" src="./guernseywater1/scripts/html5.js"></script><script type="text/javascript" src="./guernseywater1/scripts/jquery/jquery.bxslider.min.js"></script> <!-- FancyBox --> <link rel="stylesheet" href="./guernseywater1/scripts/fancybox/source/jquery.fancybox.css?v=2.1.6" type="text/css" media="screen" /> <script type="text/javascript" src="./guernseywater1/scripts/fancybox/source/jquery.fancybox.pack.js?v=2.1.6"></script> <link rel="stylesheet" href="./guernseywater1/scripts/fancybox/source/helpers/jquery.fancybox-buttons.css?v=1.0.5" type="text/css" media="screen" /> <script type="text/javascript" src="./guernseywater1/scripts/fancybox/source/helpers/jquery.fancybox-buttons.js?v=1.0.5"></script> <script type="text/javascript" src="./guernseywater1/scripts/fancybox/source/helpers/jquery.fancybox-media.js?v=1.0.6"></script> <link rel="stylesheet" href="./guernseywater1/scripts/fancybox/source/helpers/jquery.fancybox-thumbs.css?v=1.0.7" type="text/css" media="screen" /> <script type="text/javascript" src="./guernseywater1/scripts/fancybox/source/helpers/jquery.fancybox-thumbs.js?v=1.0.7"></script> <!-- Pagination --> <script type="text/javascript" src="./guernseywater1/scripts/jquery/jquery.easyPaginate.js"></script> <link href="./guernseywater1/css/editor.css" rel="stylesheet" type="text/css" media="all" /> <link href="./guernseywater1/css/reset.css" rel="stylesheet" type="text/css" media="all" /> <link href="./guernseywater1/css/html5reset-1.6.1.css" rel="stylesheet" type="text/css" media="all" /> <link href="./guernseywater1/css/main.css" rel="stylesheet" type="text/css" media="all" /> <link href="./guernseywater1/css/style.css" rel="stylesheet" type="text/css" media="all" /> <link href="./guernseywater1/css/mobile.css" rel="stylesheet" type="text/css" media="(max-width:1250px)" /> <link href="./guernseywater1/template/default/css/default.css" rel="stylesheet" type="text/css" media="all" /> <!-- Google tag (gtag.js) --> <script async src="https://www.googletagmanager.com/gtag/js?id=G-5ZQBEQQKGY"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-5ZQBEQQKGY'); </script> </head> <body> <div id="searchContainer"> <form action="https://www.water.gg/article/158409/Search?sort=Relevance&size=10#top" method="get"> <fieldset> <button type="submit"> <span class="icon-search"></span> </button> <input id="q" name="q" value="" placeholder="Search" /> <input type="hidden" name="size" value="10" /> </fieldset> </form> </div> <header> <div id="headerInner"> <a href="https://www.water.gg/article/157201/Guernsey-Water-Home-Page" id="logo"> <img src="./guernseywater1/images/logo.png" alt="Guernsey Water" /> </a> <span class="icon-search">Search</span> <a href="https://www.water.gg/contactus" class="icon-hour">Contact</a> <span class="icon-menu">Menu</span> <div id="hiddenContactBox"> 24 hour - 01481 239500 <p>Other useful numbers</p> <ul> <li></li> <li></li> <li></li> </ul> </div> <nav><ul> <li> <span class="navParent">Online Services</span> <span class="triangle"></span><ul> <li><a href="https://www.water.gg/article/157227/Pay-Your-Bill">Pay Your Bill</a> </li> <li><a href="https://www.water.gg/ebilling">eBilling </a> </li> <li><a href="https://www.water.gg/moving-home">Moving Home</a> </li> </ul> </li> <li> <span class="navParent">Water</span> <span class="triangle"></span><ul> <li><a href="https://www.water.gg/leaks">Leaks </a> </li> <li><a href="https://www.water.gg/streamsanddouits">Streams & Douits</a> </li> <li><a href="https://www.water.gg/watermeters">Water Meters</a> </li> <li><a href="https://www.water.gg/savingwater">Saving Water</a> </li> <li><a href="https://www.water.gg/waterquality">Water Quality</a> </li> <li><a href="https://www.water.gg/catchment-protection">Catchment Protection</a> </li> <li><a href="https://www.water.gg/pesticides">Pesticides</a> </li> <li><a href="https://www.water.gg/newservices">New Services</a> </li> <li><a href="https://www.water.gg/plumbing">Plumbing</a> </li> <li><a href="https://www.water.gg/water-in-your-home">Water In Your Home</a> </li> <li><a href="https://www.water.gg/water-recycling">Water Recycling</a> </li> <li><a href="https://www.water.gg/water-treatment">Water Treatment</a> </li> <li><a href="https://www.water.gg/juas">Juas Water Treatment Works Refurbishment </a> <span class="triangle"></span><ul> <li><a href="https://www.water.gg/article/164750/The-Refurbishment">The Refurbishment</a></li> </ul> </li> <li><a href="https://www.water.gg/waterhardness">Water Hardness</a> </li> <li><a href="https://www.water.gg/winterready">Winter Care</a> </li> <li><a href="https://www.water.gg/refill-stations">Refill</a> </li> <li><a href="https://www.water.gg/www.water.gg/ringmain">Ring Main</a> </li> </ul> </li> <li> <span class="navParent">Wastewater</span> <span class="triangle"></span><ul> <li><a href="https://www.water.gg/wastewater-services">Wastewater Services</a> </li> <li><a href="https://www.water.gg/managing-wastewater">Managing Wastewater</a> </li> <li><a href="https://www.water.gg/SuDS">Surface Water Management</a> </li> <li><a href="https://www.water.gg/flood-protection">Flood Protection</a> </li> <li><a href="https://www.water.gg/belle-greve-outfall-replacement">Belle Greve Outfall Replacement </a> </li> <li><a href="https://www.water.gg/letsbeclear">Let's be clear </a> </li> <li><a href="https://www.water.gg/cesspitservice">Cesspit Service</a> <span class="triangle"></span><ul> <li><a href="https://www.water.gg/cesspitsurvey">Cesspit Survey</a></li> </ul> </li> </ul> </li> <li> <span class="navParent">Help & Support</span> <span class="triangle"></span><ul> <li><a href="https://www.water.gg/faqs">FAQs</a> </li> <li><a href="https://www.water.gg/article/196498/complaints">complaints</a> </li> <li><a href="https://www.water.gg/signup">Have Your Say</a> </li> <li><a href="https://www.water.gg/about-your-bill">About Your Bill</a> </li> <li><a href="https://www.water.gg/charges">Charges</a> </li> <li><a href="https://www.water.gg/the-wastewater-charge">The Wastewater Charge</a> </li> <li><a href="https://www.water.gg/forms">Forms</a> </li> <li><a href="https://www.water.gg/resources">Resources</a> </li> <li><a href="https://www.water.gg/customercharter">Customer Charter and Service Standards </a> </li> <li><a href="https://www.water.gg/extrasupport">Extra Support</a> </li> </ul> </li> <li> <span class="navParent">About Guernsey Water</span> <span class="triangle"></span><ul> <li><a href="https://www.water.gg/article/158201/News">News</a> <span class="triangle"></span><ul> <li><a href="https://www.water.gg/article/198213/St-Saviours-Walkway-to-Close-for-Maintenance-Works">St Saviour's Walkway to Close for Maintenance Works</a></li> <li><a href="https://www.water.gg/article/198286/Lets-be-clear-this-unblocktober">Let's be clear this unblocktober</a></li> <li><a href="https://www.water.gg/article/199781/Culvert-Collapse">Culvert Collapse</a></li> <li><a href="https://www.water.gg/article/200088/Investing-in-critical-island-infrastructure">Investing in critical island infrastructure</a></li> <li><a href="https://www.water.gg/article/200221/How-to-Safely-Dispose-of-Pesticides-and-Chemicals">How to Safely Dispose of Pesticides and Chemicals</a></li> <li><a href="https://www.water.gg/article/200287/Millennium-Walk-Awarded-Storm-Ciaran-Recovery-Fund-Money">Millennium Walk Awarded Storm Ciaran Recovery Fund Money</a></li> <li><a href="https://www.water.gg/article/200645/Route-De-La-Hougue-du-Pommier">Route De La Hougue du Pommier</a></li> <li><a href="https://www.water.gg/article/200798/Water-Saving-Week-2024">Water Saving Week 2024</a></li> <li><a href="https://www.water.gg/article/201250/Cesspit-Service-says-thanks-to-customers">Cesspit Service says thanks to customers</a></li> <li><a href="https://www.water.gg/article/201321/Major-Investment-in-Critical-Infrastructure-completed">Major Investment in Critical Infrastructure completed.</a></li> <li><a href="https://www.water.gg/article/201853/Emergency-Road-Closure">Emergency Road Closure</a></li> <li><a href="https://www.water.gg/article/202091/Routine-Maintenance-on-St-Saviours-Reservoir">Routine Maintenance on St Saviour's Reservoir</a></li> <li><a href="https://www.water.gg/article/203770/Ring-Main">Ring Main</a></li> </ul> </li> <li><a href="https://www.water.gg/about-guernsey-water">About Guernsey Water</a> </li> <li><a href="https://www.water.gg/millennium-walk">The Millennium Walk</a> </li> <li><a href="https://www.water.gg/SDS">Strategic Direction Statement </a> </li> <li><a href="https://www.water.gg/source-to-sea">Source To Sea</a> </li> <li><span>Facilities </span> </li> <li><a href="https://www.water.gg/history">History</a> </li> <li><a href="https://www.water.gg/schools">Schools</a> </li> <li><a href="https://www.water.gg/health-and-safety">Health & Safety</a> </li> <li><a href="https://www.water.gg/community">Community</a> </li> <li><a href="https://www.water.gg/careers">Careers at Guernsey Water</a> </li> </ul> </li> <li class="last-warning"> <a href="https://www.water.gg/contactus">Contact Us</a></li></ul></nav> </div> </header> <script type="text/javascript"> $('.icon-menu').click(function () { $('nav').slideToggle(); $(this).toggleClass('icon-close1'); }); $('.icon-search').click(function () { $('#searchContainer').slideToggle(); $(this).toggleClass('selected'); if ($(this).hasClass('selected')) { $('#searchContainer input#q').focus(); } }); $('span.triangle').click(function () { var $this = $(this); $this.siblings('ul').slideToggle(); $this.toggleClass('open'); }); $('span.navParent').click(function () { var $this = $(this); $this.siblings('span.triangle').toggleClass('open'); $this.siblings('ul').slideToggle(); }); $(window).scroll(function () { if ($(this).scrollTop()) { $('#TopLink:hidden').stop(true, true).fadeIn(); $('header').addClass('shorter'); $('body').addClass('shorter'); } else { $('#TopLink').stop(true, true).fadeOut(); $('header.shorter').removeClass('shorter'); $('body.shorter').removeClass('shorter'); } }); function scrollToTop() { $('html, body').animate({ scrollTop: $('html').offset().top }, 250); } $(document).ready(function () { $('blockquote ul li > strong').on('click', function () { $(this).siblings('ul').slideToggle(); $(this).toggleClass('open'); }); $('blockquote > ul > li > h3').on('click', function () { $(this).siblings('ul').slideToggle(); $(this).toggleClass('open'); }); /*$('.icon-hour').on('click', function () { $('div#hiddenContactBox').fadeToggle(); });*/ $(document).click(function (e) { if ($(e.target).closest('div#hiddenContactBox').length === 0 && $('div#hiddenContactBox').is(":visible") && $(e.target).closest('.icon-hour').length === 0) { $('div#hiddenContactBox').fadeOut(); } if ($(e.target).closest('.icon-menu').length === 0 && $('nav').is(":visible") && $(e.target).closest('nav').length === 0) { $('nav').slideUp(); $('.icon-menu').removeClass('icon-close1'); } }); }); </script> <ul id="topNav"> <li> <span class="icon-GW_icon_black">About Guernsey Water</span> <div><ul> <li><span class="circle"></span><a href="https://www.water.gg/article/158201/News">News</a></li> <li><span class="circle"></span><a href="https://www.water.gg/about-guernsey-water">About Guernsey Water</a></li> <li><span class="circle"></span><a href="https://www.water.gg/millennium-walk">The Millennium Walk</a></li> <li><span class="circle"></span><a href="https://www.water.gg/SDS">Strategic Direction Statement </a></li> <li><span class="circle"></span><a href="https://www.water.gg/source-to-sea">Source To Sea</a></li> <li><span class="circle"></span><span>Facilities </span></li> <li><span class="circle"></span><a href="https://www.water.gg/history">History</a></li> <li><span class="circle"></span><a href="https://www.water.gg/schools">Schools</a></li> <li><span class="circle"></span><a href="https://www.water.gg/health-and-safety">Health & Safety</a></li> <li><span class="circle"></span><a href="https://www.water.gg/community">Community</a></li> <li><span class="circle"></span><a href="https://www.water.gg/careers">Careers at Guernsey Water</a></li> </ul></div> </li> <li> <span class="icon-droplets">Water Services</span> <div><ul> <li><span class="circle"></span><a href="https://www.water.gg/leaks">Leaks </a></li> <li><span class="circle"></span><a href="https://www.water.gg/streamsanddouits">Streams & Douits</a></li> <li><span class="circle"></span><a href="https://www.water.gg/watermeters">Water Meters</a></li> <li><span class="circle"></span><a href="https://www.water.gg/savingwater">Saving Water</a></li> <li><span class="circle"></span><a href="https://www.water.gg/waterquality">Water Quality</a></li> <li><span class="circle"></span><a href="https://www.water.gg/catchment-protection">Catchment Protection</a></li> <li><span class="circle"></span><a href="https://www.water.gg/pesticides">Pesticides</a></li> <li><span class="circle"></span><a href="https://www.water.gg/newservices">New Services</a></li> <li><span class="circle"></span><a href="https://www.water.gg/plumbing">Plumbing</a></li> <li><span class="circle"></span><a href="https://www.water.gg/water-in-your-home">Water In Your Home</a></li> <li><span class="circle"></span><a href="https://www.water.gg/water-recycling">Water Recycling</a></li> <li><span class="circle"></span><a href="https://www.water.gg/water-treatment">Water Treatment</a></li> <li><span class="circle"></span><a href="https://www.water.gg/juas">Juas Water Treatment Works Refurbishment </a></li> <li><span class="circle"></span><a href="https://www.water.gg/waterhardness">Water Hardness</a></li> <li><span class="circle"></span><a href="https://www.water.gg/winterready">Winter Care</a></li> <li><span class="circle"></span><a href="https://www.water.gg/refill-stations">Refill</a></li> <li><span class="circle"></span><a href="https://www.water.gg/www.water.gg/ringmain">Ring Main</a></li> </ul></div> </li> <li> <span class="icon-drainage">Wastewater </span> <div><ul> <li><span class="circle"></span><a href="https://www.water.gg/wastewater-services">Wastewater Services</a></li> <li><span class="circle"></span><a href="https://www.water.gg/managing-wastewater">Managing Wastewater</a></li> <li><span class="circle"></span><a href="https://www.water.gg/SuDS">Surface Water Management</a></li> <li><span class="circle"></span><a href="https://www.water.gg/flood-protection">Flood Protection</a></li> <li><span class="circle"></span><a href="https://www.water.gg/belle-greve-outfall-replacement">Belle Greve Outfall Replacement </a></li> <li><span class="circle"></span><a href="https://www.water.gg/letsbeclear">Let's be clear </a></li> <li><span class="circle"></span><a href="https://www.water.gg/cesspitservice">Cesspit Service</a></li> </ul></div> </li> <li> <span class="icon-support">Help & Support</span> <div><ul> <li><span class="circle"></span><a href="https://www.water.gg/faqs">FAQs</a></li> <li><span class="circle"></span><a href="https://www.water.gg/article/196498/complaints">complaints</a></li> <li><span class="circle"></span><a href="https://www.water.gg/signup">Have Your Say</a></li> <li><span class="circle"></span><a href="https://www.water.gg/about-your-bill">About Your Bill</a></li> <li><span class="circle"></span><a href="https://www.water.gg/charges">Charges</a></li> <li><span class="circle"></span><a href="https://www.water.gg/the-wastewater-charge">The Wastewater Charge</a></li> <li><span class="circle"></span><a href="https://www.water.gg/forms">Forms</a></li> <li><span class="circle"></span><a href="https://www.water.gg/resources">Resources</a></li> <li><span class="circle"></span><a href="https://www.water.gg/customercharter">Customer Charter and Service Standards </a></li> <li><span class="circle"></span><a href="https://www.water.gg/extrasupport">Extra Support</a></li> </ul></div> </li> </ul> <section> <div id="content"> <div> <ul id="Breadcrumb"><li><span id="start">You Are In:</span></li><li class="odd"> <a href="https://www.water.gg/article/157221/About-Guernsey-Water">About Guernsey Water</a> </li><li class="even last"> <span>Facilities </span> </li> </ul> <h1>Facilities </h1> <h2>Guernsey Water's property assets include water treatment works; raw water storage reservoirs; raw water, foul water and surface water pumping stations; service (treated water storage) reservoirs; a water tower; wells; an operational depot; a wastewater treatment centre; three sea outfalls; many kilometres of foul and surface water sewer, and raw/treated water main; and various other pieces of property and land.</h2><h2><strong>Key Facilities</strong></h2><p> </p><h2><span class="positionleft"><img src="./media/inline/l/f/BGWwC.jpg" alt="Belle Greve Wastewater Centre " title="Belle Greve Wastewater Centre" class="positionleft noborder" style="width: 547px" /></span>Belle Greve Wastewater Centre</h2><p>The Belle Greve Wastewater Centre (BGWwC) receives 99.7% of all sewage flows from the island. Flows receive preliminary treatment through state-of-the-art mechanical screens, which remove any non-biodegradable matter from the flows that is larger than 6mm in diameter. The remaining biodegradable elements are then discharged out to sea through the long-sea outfall where tide movement, dispersion and sunlight break them down into harmless elements. The site also contains a stormwater tank which is capable of holding up to 4,000m3 of flow - this means that during heavy rainfall events when the long-sea outfall is at full capacity, the emergency short-sea outfall is much less likely to be utilised.</p><p> </p><h2><span class="positionleft"><img src="./media/inline/l/8/Saviours.jpg" alt="St Saviours water treatment works " title="St Saviours water treatment works" class="positionleft noborder" style="width: 1000px" /></span>St Saviours WTW</h2><p>Our St Saviours site encompasses a key water treatment works, the Island's only impounding dam and a large reservoir encircled by the popular 3km-long Millennium Walk. The treatment works utilises membrane technology to produce the highest possible quality of water to serve the south of the Island. The membrane technology works by forming a physical barrier to prevent any impurities, such as bacteria and parasites, from entering the water supply and reduces the amount of chemicals required in the filtration process. At full production, the plant can produce 10ML/d (10 Megalitres or 10 million litres per day).</p><p> </p><h2><span class="positionleft"><img src="./media/inline/h/p/IMG_9583.jpg" alt="Juas WTW " title="Juas WTW" class="positionleft noborder" style="width: 1000px" /></span>Juas WTW</h2><p>Juas WTW was recently refurbished and put back into public supply in early 2019. The works utilises dual media filtration and is also home to a UV disinfection system. The works is designed to be able to supply up to 10million litres of water a day at maximum output. The refurbishment itself was carried out in majority by Guernsey Water staff. One of the Island's largest water storage reservoirs can also be found onsite, with a capacity of 609 million litres of water.</p><p> </p><h2><span class="positionleft"><img src="./media/inline/m/t/KingsMills.jpg" alt="Kings Mills Water Treatment Works " title="Kings Mills Water Treatment Works" class="positionleft noborder" style="width: 1000px" /></span>Kings Mills WTW</h2><p>The third of our water treatment works, Kings Mills utilises the more traditional method of sand filtration to treat the water, which results in very high water quality production. After undergoing a major refurbishment in early 2013, the plant is now more resilient and acts as a very capable back-up to our other two plants. Kings Mills is able to produce 9 ML/d at maximum operating capacity.</p><p> </p><h2><span class="positionleft"><img src="./media/inline/n/c/WaterTower.jpg" alt="Water Tower " title="Water Tower" class="positionleft noborder" style="width: 1000px" /></span>Water Tower</h2><p>Our iconic Forest Road water tower. The tower's purpose is to hold treated water and keep it at a high standard until it is required by customers. By doing this, it essentially smoothes out the peaks and troughs of customer demand. In order to maintain the quality of the water held in the tower, it is occasionally mixed and dosed with chlorine, which keeps the water safe while it travels through our network of distribution pipes to customer homes. The tower can hold up to 0.53ML (530,000 litres).</p><p> </p><h2><span class="positionleft"><img src="./media/inline/n/f/ForestTank.jpg" alt="Forest Road Service Reservoir " title="Forest Road Service Reservoir" class="positionleft noborder" style="width: 1000px" /></span>Forest Road Service Reservoir</h2><p>In addition to the water tower, our Forest Road site also contains two service reservoir tanks. The difference between 'storage' and 'service' reservoirs is that storage reservoirs hold raw (untreated) water before it is transported to a water treatment works, whereas in a service reservoir the water is already treated, and is being held before being distributed to customer homes. The tanks on this site are known as No.2 (East) and (West). Combined, the tanks can hold 23.4ML of treated water.</p><p> </p><h2><span class="positionleft"><img src="./media/inline/o/o/FriePlaidy.jpg" alt="Frie Plaidy Service Reservoir " title="Frie Plaidy Service Reservoir" class="positionleft noborder" style="width: 1000px" /></span>Frie Plaidy Service Reservoir</h2><p>Frie Plaidy, located in the Castel, is the Island's other service reservoir. Like the tanks and water tower at our Forest Road site, the Frie Plaidy tank holds treated water until it is required by customers. The tank here holds 3.8ML of water.</p><p> </p><h2><span class="positionleft"><img src="./media/inline/o/b/StAndrewsQuarry.jpg" alt="St Andrews Storage Reservoir " title="St Andrews Storage Reservoir" class="positionleft noborder" style="width: 1000px" /></span>St Andrews Storage Reservoir</h2><p>St Andrews storage reservoir is an important site for Guernsey Water. The quarry itself holds 388ML of water, and is in a strategically sound position in the middle of the Island for providing raw water where it is needed. The site also houses Guernsey Water's operational depot, Brickfield House, and a storage unit for wastewater assets.</p><p> </p><h2><span class="positionleft"><img src="./media/inline/q/0/GrosseHougue1.jpg" alt="Grosse Hougue reservoir " title="Grosse Hougue reservoir" class="positionleft noborder" style="width: 1000px" /></span>Grosse Hougue Storage Reservoir</h2><p>Grosse Hougue is another one of our large storage reservoir quarries located in the north of the Island. The quarry can hold 336ML of water.</p><p> </p><p> </p><p> </p> </div> </div> </section> <div class="shareBar"><div> <span class="social-share"><span class="icon-share"></span>Share this page</span> <div class="a2a_kit a2a_kit_size_32 a2a_default_style"> <a class="a2a_dd" href="https://www.addtoany.com/share"></a> <a class="a2a_button_twitter"></a> <a class="a2a_button_facebook"></a> </div> <script async src="https://static.addtoany.com/menu/page.js"></script> </div></div> <div id="responsibilityContainer"> <section id="responsibility"> <h2>Responsibility to our customers and the environment</h2> <a href="https://www.water.gg/article/158343/View-Our-7-Outcomes">View Our 7 Outcomes</a> </section></div> <section id="footerLinks"> <div> <ul id="actions"> <li> <a href="https://www.water.gg/article/160520/Feedback">Feedback</a> </li> <li id="number"> <span> 24 Hour Contact Number <span>01481 229500</span> </span> </li> <li id="social"> <a target="_blank" href="https://twitter.com/GuernseyWater" class="icon-Twitter"></a> <a target="_blank" href="https://www.facebook.com/GuernseyWater/" class="icon-facetime"></a> </li> </ul> </div> </section> <footer> <img src="./guernseywater1/images/logo.png" id="footerLogo" alt="States of Guernsey" /> <ul> <li><a href="https://www.water.gg/fpn">Fair Processing Notice</a> </li> <li><a href="https://www.water.gg/article/158288/Accessibility">Accessibility</a> </li> <li><a href="https://www.water.gg/article/158289/Links">Links</a> </li> </ul> <p>Copyright © <script type="text/javascript">document.write(new Date().getFullYear());</script> Guernsey Water. All rights reserved.</p> <a href="http://www.submarine.gg" target="_blank" id="sublink" style="color:#1d6bc5;"> Website by <span class="icon-Submarine_logo2016"></span> </a> <img src="./guernseywater1/images/trading-group.png" id="trading" alt="States of Guernsey Trading Group" /> </footer> <a href="#" id="TopLink" class="icon-back" onclick="scrollToTop(); return false;"><span>Top</span></a> <div id="helpPanel"> <div id="hiddenBit"> Have a question or cannot find what you are looking for? Try our support pages. <a href="https://www.water.gg/article/161168/Support-Pages">Go</a> </div> <span>Happy to help <span class="icon-forward"></span></span> </div> <script> $('#helpPanel > span').click(function () { $('#helpPanel').toggleClass('open'); $('#hiddenBit').fadeToggle(); }); </script> <!-- POP OUT PANEL --> <script src="https://static.elfsight.com/platform/platform.js" async></script> <div class="elfsight-app-a8c267c4-a244-40b4-afd9-e81c000e0733" data-elfsight-app-lazy></div> </body> </html>