Water quality

Optimal water quality

In 2019, De Watergroep supplied almost 180 million m³ of drinking water to more than 3.2 million users. Our drinking water production has remained stable for several years in a row. In addition, we offered approximately 9 million m³ of 'custom-made water'.

introductie foto Optimal water quality

Laboratory work in figures

2018

% A compliant

% B compliant

% C compliant

Number of samples

Grid samples

99.6

97.6

91.1

9063

Sites

99.9

99.4

89.4

9048

2019

% A compliant

% B compliant

% C compliant

Number of samples

Grid samples

99.8

97.9

91.2

9566

Sites

99.8

99.6

90.3

9467

 

Little or no microplastics in drinking water

The drinking water produced by De Watergroep contains little or no microplastics, a pilot project in 2019 confirmed.

Untreated surface water contains a significant volume of microplastics in the form of fibres or particles. De Watergroep’s water treatment processes almost completely remove these microplastics. In 2019, we performed a series of concrete measurements in cooperation with Ghent University. To do so, we needed to develop a measurement method ourselves, as there is no internationally accredited method so far. The measurements showed that a litre of water treated by De Watergroep contains no more than 0.2 particles of microplastics. Water in a plastic bottle often contains 1,000 particles or more, so in terms of microplastics, tap water is completely safe. As a drinking water company, we are absolutely committed to safety and quality, and we are closely monitoring the latest developments in new measurement technologies and protocols as a result.

function swipedetect(el, callback){ var touchsurface = el, swipedir, startX, startY, distX, distY, threshold = 200, //required min distance traveled to be considered swipe restraint = 100, // maximum distance allowed at the same time in perpendicular direction allowedTime = 300, // maximum time allowed to travel that distance elapsedTime, startTime, handleswipe = callback || function(swipedir){} touchsurface.addEventListener('touchstart', function(e){ var touchobj = e.changedTouches[0] swipedir = 'none' dist = 0 startX = touchobj.pageX startY = touchobj.pageY startTime = new Date().getTime() // record time when finger first makes contact with surface e.preventDefault() }, false) touchsurface.addEventListener('touchmove', function(e){ e.preventDefault() // prevent scrolling when inside DIV }, false) touchsurface.addEventListener('touchend', function(e){ var touchobj = e.changedTouches[0] distX = touchobj.pageX - startX // get horizontal dist traveled by finger while in contact with surface distY = touchobj.pageY - startY // get vertical dist traveled by finger while in contact with surface elapsedTime = new Date().getTime() - startTime // get time elapsed if (elapsedTime <= allowedTime){ // first condition for awipe met if (Math.abs(distX) >= threshold && Math.abs(distY) <= restraint){ // 2nd condition for horizontal swipe met swipedir = (distX < 0)? 'left' : 'right' // if dist traveled is negative, it indicates left swipe } else if (Math.abs(distY) >= threshold && Math.abs(distX) <= restraint){ // 2nd condition for vertical swipe met swipedir = (distY < 0)? 'up' : 'down' // if dist traveled is negative, it indicates up swipe } } handleswipe(swipedir) e.preventDefault() }, false) } window.addEventListener('load', function(){ var el = document.getElementById('prevnextbar') var nextpage = document.getElementById('nextpage') var prevpage = document.getElementById('prevpage') swipedetect(el, function(swipedir){ if (swipedir != 'right'){ prevpage.click() } if (swipedir != 'left'){ nextpage.click() } }) }, false)