;2012;2015;2016;Change in per cent;Change in per cent; 2012 - 2016;2015 - 2016; Per cent of population connected to municipal water supply;84.8;84.7;84.4;-0.5;-0.4; Average household consumption per person per day (litre);199;207;190;-4.5;-8.2; Per cent of total water pipeline system renewed, 3-year-average;0.66;0.69;0.70;6.1;1.4; Percentage of population supplied with hygienically safe drinking water with regard to E. Coli;99.0;99.6;99.2;0.2;-0.4; Operating expenditures per inhabitant connected to municipal wastewater facilit;815;936;969;18.9;3.5; Fee calculation basis per inhabitant connected to muncipal distribution;1154;1307;1363;18.1;4.3;