Drinking water. Safe. Scalable.
Over 35 years of experience as a turnkey provider of water treatment plants, engineering and chemicals. Active nationally and internationally, with in-house prefabrication.
Guaranteed drinking water quality, without compromise
Municipal drinking water treatment is one of GWT’s core areas of expertise. We plan, build and maintain plants that reliably convert raw water from wells, surface water sources or seawater into drinking water that meets applicable standards. We combine proven processes such as iron and manganese removal, activated carbon treatment and disinfection with modern membrane technologies such as ultrafiltration and reverse osmosis. Our in-house manufacturing in Austria allows us to preassemble complete skids, test quality at the factory, and deliver faster, safer and more cost-effective projects. As a turnkey provider, we support the entire lifecycle: process engineering, detailed design, manufacturing, installation, instrumentation, control and automation, commissioning and training, as well as maintenance, service and chemicals.
Services throughout the entire plant lifecycle
Our strength lies in delivering the entire project through a single point of contact. This covers everything from process selection and design to 3D plant engineering, prefabrication in our own workshop, precision installation, instrumentation and control integration, commissioning and training. We also supply custom-fit filtration, pumping and dosing technology, manufacture special components, and keep systems running with maintenance, service and a tailored range of chemicals. This approach reduces interfaces, speeds up schedules, minimizes risks and delivers measurable value to operators—from the first liter to extending the plant’s service life.
Engineering
We analyse raw water quality, define treatment objectives and select the optimal process accordingly. Mass balances, hydraulic checks and life-cycle costs all contribute to a robust solution that can scale from a local water supply to a regional network.
Your benefits at GWT:
- Over 35 years of experience
- Standards-compliant, scalable design
- Fewer interfaces through an integrated approach
Engineering
Engineering
We analyse raw water quality, define treatment objectives and select the optimal process accordingly. Mass balances, hydraulic checks and life-cycle costs all contribute to a robust solution that can scale from a local water supply to a regional network.
Your benefits at GWT:
- Over 35 years of experience
- Standards-compliant, scalable design
- Fewer interfaces through an integrated approach
Plant design & construction
Your benefits with GWT:
Plant design & construction
Plant design & construction
Your benefits with GWT:
Prefabrication
Skid fabrication for filter trains, RO/UF systems, dosing stations and pump groups includes pressure, leak and functional testing (FAT) to minimise time on site.
Your benefits at GWT:
- Factory-tested quality
- Shorter construction and downtime
- Fewer interface risks
- Predictable logistics
Prefabrication
Prefabrication
Skid fabrication for filter trains, RO/UF systems, dosing stations and pump groups includes pressure, leak and functional testing (FAT) to minimise time on site.
Your benefits at GWT:
- Factory-tested quality
- Shorter construction and downtime
- Fewer interface risks
- Predictable logistics
Filtration technology
From multibed and catalytic filtration for iron/manganese removal, to activated carbon for pesticide/THM reduction, and protective filters upstream of membrane systems, we combine filter stages to suit the raw water chemistry.
Your benefits with GWT:
- Reliable achievement of target removal levels
- Stable operation
- Optimised operating costs
Filtration technology
Filtration technology
From multibed and catalytic filtration for iron/manganese removal, to activated carbon for pesticide/THM reduction, and protective filters upstream of membrane systems, we combine filter stages to suit the raw water chemistry.
Your benefits with GWT:
- Reliable achievement of target removal levels
- Stable operation
- Optimised operating costs
Pump Technology
We design energy-efficient pumping systems, booster systems and spring water supply lines with VFD control, and carry out cavitation and network hydraulics checks to ensure a reliable supply and low lifecycle costs.
Your benefits with GWT:
- Efficient, quiet, long-lasting systems
- Precise operating point
- Smooth start-up and control strategies
- Easy to maintain
Pump Technology
Pump Technology
We design energy-efficient pumping systems, booster systems and spring water supply lines with VFD control, and carry out cavitation and network hydraulics checks to ensure a reliable supply and low lifecycle costs.
Your benefits with GWT:
- Efficient, quiet, long-lasting systems
- Precise operating point
- Smooth start-up and control strategies
- Easy to maintain
Dosing technology
Whether it’s flocculation, pH conditioning, corrosion protection or disinfection (e.g. NaOCl, Cl₂, H₂O₂, ozone), we plan and supply complete dosing stations with instrumentation and control technology, leak protection, storage tanks and safety systems.
Your benefits with GWT:
- Precise, stable dosing
- Pre-assembled units
- Precise control & monitoring
Dosing technology
Dosing technology
Whether it’s flocculation, pH conditioning, corrosion protection or disinfection (e.g. NaOCl, Cl₂, H₂O₂, ozone), we plan and supply complete dosing stations with instrumentation and control technology, leak protection, storage tanks and safety systems.
Your benefits with GWT:
- Precise, stable dosing
- Pre-assembled units
- Precise control & monitoring
Electrical Engineering for Water Treatment Plants
We tailor control panels, field wiring, instrumentation, automation and remote access to the process engineering requirements of each system.
Your benefits with GWT:
- Mechanical engineering + instrumentation, control & automation from one source
- Clear visualization
- Remote maintenance & data transparency
Electrical Engineering for Water Treatment Plants
Electrical Engineering for Water Treatment Plants
We tailor control panels, field wiring, instrumentation, automation and remote access to the process engineering requirements of each system.
Your benefits with GWT:
- Mechanical engineering + instrumentation, control & automation from one source
- Clear visualization
- Remote maintenance & data transparency
Commissioning & training
Media filling, flushing and disinfection concepts, parameterization, performance verification (SAT/FAT handover), and operator training with SOPs ensure a safe start to routine operations.
Your benefits with GWT:
- Fast, safe ramp-up
- Practical training
- Complete handover documentation
Commissioning & training
Commissioning & training
Media filling, flushing and disinfection concepts, parameterization, performance verification (SAT/FAT handover), and operator training with SOPs ensure a safe start to routine operations.
Your benefits with GWT:
- Fast, safe ramp-up
- Practical training
- Complete handover documentation
Custom components
We manufacture custom stainless steel and plastic components, such as special manifolds, skid frames and vessel modifications, to match your plant design precisely.
Your benefits with GWT:
- Tailored solutions
- Fast availability
- Factory-tested quality
- Seamless integration
Custom components
Custom components
We manufacture custom stainless steel and plastic components, such as special manifolds, skid frames and vessel modifications, to match your plant design precisely.
Your benefits with GWT:
- Tailored solutions
- Fast availability
- Factory-tested quality
- Seamless integration
Maintenance & Service
We provide scheduled maintenance, emergency repairs, spare parts and performance optimisation across all manufacturers, with clear service plans.
Your benefits with GWT:
- High availability
- Longer operating life
- 24/7 emergency support
Maintenance & Service
Maintenance & Service
We provide scheduled maintenance, emergency repairs, spare parts and performance optimisation across all manufacturers, with clear service plans.
Your benefits with GWT:
- High availability
- Longer operating life
- 24/7 emergency support
Chemicals
Get tailored chemicals for disinfection, cleaning and conditioning, along with expert advice.
Your benefits with GWT:
- Products & processes from a single source
- Applications compliant with standards
- Efficient cleaning cycles
Chemicals
Chemicals
Get tailored chemicals for disinfection, cleaning and conditioning, along with expert advice.
Your benefits with GWT:
- Products & processes from a single source
- Applications compliant with standards
- Efficient cleaning cycles
SILVRETTA THERME ISCHGL
THERESIENFELD WATER TREATMENT PLANT
WIENER SPORT-CLUB STADIUM (STADIUM RENOVATION)
PODERSDORF AM SEE WASTEWATER TREATMENT PLANT
EVN KREMS WATER TREATMENT
TELFER BAD
JÖRGERBAD
STAINZ OUTDOOR POOL
GRAZ ICE STADIUM (TRAINING HALL)
PETRONELL DRINKING WATER TREATMENT PLANT
Wellness Oasis
STUPPBACH WASTEWATER TREATMENT PLANT (AWV OBERES SCHWARZATAL)
SPITTELAU CONDENSATE TREATMENT PLANT
DÖBLING BATH
AMSTETTEN NATURAL & INDOOR SWIMMING POOL
TECHNOPARK GRAZ-RAABA
AWV WIENER NEUSTADT WASTEWATER TREATMENT PLANT
Garden oasis
MAUER DISINFECTION PLANT
KONGRESS BATH
NENI AM TISCH (HEADQUARTERS & PRODUCTION)
AQUA NOVA
KRAPFENWALD BATH VIENNA
FRIEDBERG WATERWORKS & DEACIDIFICATION PLANT
FELDKIRCHEN PROJECT
BOILER FEEDWATER SYSTEM GUD POWER PLANT BESMAYA
FLORIDSDORF BATHS
REITERS SUPREME HOTEL
WKO GRAZ (NEW STEIERMARK CHAMBER OF COMMERCE BUILDING)
SCHAFBERG BATH VIENNA
GAV SOUTHEAST TULLNERFELD WASTEWATER TREATMENT PLANT
SIMMERING POWER PLANT DEIONISATION SYSTEM
Premium design
Greifensee Primary School
Gstaad Sports Centre
The Dolder Grand, Zürich
Safe Drinking Water. Scalable.
A full-service provider of water treatment systems, engineering and chemicals since 1987. Operating nationally and internationally, with in-house prefabrication.
Drinking water quality without compromise
Municipal drinking water treatment is one of GWT's core areas. We plan, build and maintain plants that reliably turn raw water from wells, surface water or seawater into drinking water that meets the applicable standards.
Thanks to our in-house manufacturing, we pre-build complete skids and test quality at the factory. This makes projects faster, safer and more cost-effective.
Our processes
- Iron and manganese removal
- Activated carbon filtration
- Disinfection
- Membrane technology (ultrafiltration, reverse osmosis)
As a full-service provider we support the entire life cycle
- Process engineering and detailed design
- Manufacturing and installation
- Electrical and control engineering
- Commissioning and training
- Maintenance, service and chemicals
Services throughout the entire plant lifecycle
Our strength lies in managing the entire project from a single source. This covers process selection and design, 3D plant engineering, in-house prefabrication and precise installation through to IC&A integration, commissioning and training.
We also supply custom-fit filtration, pumping and dosing technology, manufacture special components and ensure reliable operation with maintenance, service and a tailored range of chemicals.
Engineering
We analyse raw water quality, define treatment objectives and select the optimal process accordingly. Mass balances, hydraulic checks and life-cycle costs all contribute to a robust solution that can scale from a local water supply to a regional network.
Your benefits at GWT:
- Over 35 years of experience
- Standards-compliant, scalable design
- Fewer interfaces through an integrated approach
Engineering
Engineering
We analyse raw water quality, define treatment objectives and select the optimal process accordingly. Mass balances, hydraulic checks and life-cycle costs all contribute to a robust solution that can scale from a local water supply to a regional network.
Your benefits at GWT:
- Over 35 years of experience
- Standards-compliant, scalable design
- Fewer interfaces through an integrated approach
Plant design & construction
We provide detailed designs, layouts, piping and instrumentation diagrams, as well as component and cable tray schedules—all as one coordinated package.
Your benefits with GWT:
- One point of contact from start to finish
- Clear documentation and traceability
- Smooth installation coordination
- Reliable scheduling
Plant design & construction
Plant design & construction
We provide detailed designs, layouts, piping and instrumentation diagrams, as well as component and cable tray schedules—all as one coordinated package.
Your benefits with GWT:
- One point of contact from start to finish
- Clear documentation and traceability
- Smooth installation coordination
- Reliable scheduling
Prefabrication
Skid fabrication for filter trains, RO/UF systems, dosing stations and pump groups includes pressure, leak and functional testing (FAT) to minimise time on site.
Your benefits at GWT:
- Factory-tested quality
- Shorter construction and downtime
- Fewer interface risks
- Predictable logistics
Prefabrication
Prefabrication
Skid fabrication for filter trains, RO/UF systems, dosing stations and pump groups includes pressure, leak and functional testing (FAT) to minimise time on site.
Your benefits at GWT:
- Factory-tested quality
- Shorter construction and downtime
- Fewer interface risks
- Predictable logistics
Filtration technology
From multibed and catalytic filtration for iron/manganese removal, to activated carbon for pesticide/THM reduction, and protective filters upstream of membrane systems, we combine filter stages to suit the raw water chemistry.
Your benefits with GWT:
- Reliable achievement of target removal levels
- Stable operation
- Optimised operating costs
Filtration technology
Filtration technology
From multibed and catalytic filtration for iron/manganese removal, to activated carbon for pesticide/THM reduction, and protective filters upstream of membrane systems, we combine filter stages to suit the raw water chemistry.
Your benefits with GWT:
- Reliable achievement of target removal levels
- Stable operation
- Optimised operating costs
Pump Technology
We design energy-efficient pumping systems, booster systems and spring water supply lines with VFD control, and carry out cavitation and network hydraulics checks to ensure a reliable supply and low lifecycle costs.
Your benefits with GWT:
- Efficient, quiet, long-lasting systems
- Precise operating point
- Smooth start-up and control strategies
- Easy to maintain
Pump Technology
Pump Technology
We design energy-efficient pumping systems, booster systems and spring water supply lines with VFD control, and carry out cavitation and network hydraulics checks to ensure a reliable supply and low lifecycle costs.
Your benefits with GWT:
- Efficient, quiet, long-lasting systems
- Precise operating point
- Smooth start-up and control strategies
- Easy to maintain
Dosing technology
Whether it’s flocculation, pH conditioning, corrosion protection or disinfection (e.g. NaOCl, Cl₂, H₂O₂, ozone), we plan and supply complete dosing stations with instrumentation and control technology, leak protection, storage tanks and safety systems.
Your benefits with GWT:
- Precise, stable dosing
- Pre-assembled units
- Precise control & monitoring
Dosing technology
Dosing technology
Whether it’s flocculation, pH conditioning, corrosion protection or disinfection (e.g. NaOCl, Cl₂, H₂O₂, ozone), we plan and supply complete dosing stations with instrumentation and control technology, leak protection, storage tanks and safety systems.
Your benefits with GWT:
- Precise, stable dosing
- Pre-assembled units
- Precise control & monitoring
Electrical Engineering for Water Treatment Plants
We tailor control panels, field wiring, instrumentation, automation and remote access to the process engineering requirements of each system.
Your benefits with GWT:
- Mechanical engineering + instrumentation, control & automation from one source
- Clear visualization
- Remote maintenance & data transparency
Electrical Engineering for Water Treatment Plants
Electrical Engineering for Water Treatment Plants
We tailor control panels, field wiring, instrumentation, automation and remote access to the process engineering requirements of each system.
Your benefits with GWT:
- Mechanical engineering + instrumentation, control & automation from one source
- Clear visualization
- Remote maintenance & data transparency
Commissioning & training
Media filling, flushing and disinfection concepts, parameterization, performance verification (SAT/FAT handover), and operator training with SOPs ensure a safe start to routine operations.
Your benefits with GWT:
- Fast, safe ramp-up
- Practical training
- Complete handover documentation
Commissioning & training
Commissioning & training
Media filling, flushing and disinfection concepts, parameterization, performance verification (SAT/FAT handover), and operator training with SOPs ensure a safe start to routine operations.
Your benefits with GWT:
- Fast, safe ramp-up
- Practical training
- Complete handover documentation
Custom components
We manufacture custom stainless steel and plastic components, such as special manifolds, skid frames and vessel modifications, to match your plant design precisely.
Your benefits with GWT:
- Tailored solutions
- Fast availability
- Factory-tested quality
- Seamless integration
Custom components
Custom components
We manufacture custom stainless steel and plastic components, such as special manifolds, skid frames and vessel modifications, to match your plant design precisely.
Your benefits with GWT:
- Tailored solutions
- Fast availability
- Factory-tested quality
- Seamless integration
Maintenance & Service
We provide scheduled maintenance, emergency repairs, spare parts and performance optimisation across all manufacturers, with clear service plans.
Your benefits with GWT:
- High availability
- Longer operating life
- 24/7 emergency support
Maintenance & Service
Maintenance & Service
We provide scheduled maintenance, emergency repairs, spare parts and performance optimisation across all manufacturers, with clear service plans.
Your benefits with GWT:
- High availability
- Longer operating life
- 24/7 emergency support
Chemicals
Get tailored chemicals for disinfection, cleaning and conditioning, along with expert advice.
Your benefits with GWT:
- Products & processes from a single source
- Applications compliant with standards
- Efficient cleaning cycles
Chemicals
Chemicals
Get tailored chemicals for disinfection, cleaning and conditioning, along with expert advice.
Your benefits with GWT:
- Products & processes from a single source
- Applications compliant with standards
- Efficient cleaning cycles