water services / geothermal energy / physical-chemical conditions / petry@dvgw.de castell@dvgw.de web / water supply systems / water supply infrastructure / treatment technologies / water utilities / nondegradable and carcinogenic chemical substances / local water availability long distance supply systems / Water saving devices / geothermal energy use / energy efficient devices / Risk management / energy use / renewable energy / situation water utilities / energy / /
NaturalFeature
Lake Constance / River Ruhr / /
Organization
Federal Environment Authority / World Health Organization / federal government / Federal Bank of Germany / European Commission / Federal office of Civil Protection and Disaster Assistance / European Union / Technical and Scientific Association for Gas and Water Josef-Wirmer-Str. / Castell-Exner DVGW German Technical and Scientific Association for Gas / German Association for Gas and Water / /