VIWASE has carried out studies, formulation of master plan for drainage and sewerage for almost urban and rural areas of Vietnam. In this field, VIWASE has cumulated experiences in regard of:

- Proposal and selection of appropriate drainage and sewerage system to the best fits of special features of each urban.

- Hydraulic analysis for organization of urban sewerage and drainage including sewers, channels, river, regulating lakes, wastewater pumping station.

- Hydraulic calculation, designing the storm water drainage system for urban and industrial zones.

- Calculation, design of storm water pumping station, wastewater, regulating lake system, wastewater collecting systems for urban and industrial zone.

VIWASE has provided the consulting services for almost large-scaled wastewater treatment projects in Vietnam, processing experiences in selection of suitable treatment processes, aiming to meet technical requirements and highly-treated effectiveness, meet the environmental standards. Especially, VIWASE possesses experiences in comparison, selection of treatment technology options along with extensive experiences in tasks from formulation of investment reports, investment construction projects, basic designs to calculation of detailed designs, total cost estimate, management and construction supervision for wastewater treatment works.