Economic aspects Maintenance and repair Management 2 Water 2 Water-supply 2 Benchmarking (Management) 1 By-products 1 更多 ... Disinfection 1 Distribution 1 Drought relief 1 Droughts 1 Environmental permits 1 Hydraulics 1 Loss control 1 Management information systems 1 Mathematical models 1 Microbial contamination 1 Municipal water supply 1 Piping 1 Planning 1 Prices 1 Privatization 1 Purification 1 Rates 1 Regional planning 1 Sanitary engineering 1 Security measures 1 Water consumption 1 Water efficiency 1 Water leakage 1 少 ...