Water Treatment Design & Build
We design, fabricate, and construct water and wastewater treatment systems that solve complex water quality challenges and meet regulatory compliance.

Integrated Water Treatment Design & Build for Long-Term Performance
At FILTEC, we provide end-to-end water treatment solutions, from initial concept to final construction, with lifetime service and support. Our team of experienced mechanical and process engineers develops innovative designs that meet regulatory standards, while our in-house fabrication and construction teams ensure quality execution. Whether upgrading an existing system or building a new facility, our integrated approach delivers efficiency, reliability, and long-term performance.
500+ Water & Wastewater Treatment Plants Delivered
2,500m² Purpose-Built Fabrication Facility
Over 40 Professional Engineers
30+ Years Design Library Backed by Proven Outcomes
Why FILTEC Stands Out?
Specialised Design & Build Expertise
Our process and mechanical engineers collaborate with our fabrication and site teams to deliver tailored water treatment and wastewater treatment design solutions that meet performance and compliance requirements.
In-House Resources for Efficiency
With a dedicated design library and in-house fabrication capabilities, we offer competitive pricing, fixed-price certainty, and reduced reliance on external contractors.Â
Regulatory Knowledge
We design and construct water and wastewater treatment systems that align with New Zealand Drinking Water Standards and Australian Drinking Water Guidelines.
Seamless Project Execution
From detailed engineering and fabrication to on-site construction, our team manages the entire process, ensuring a smooth and timely project delivery.
Innovative Technology Integration
We incorporate the latest advancements in water treatment technology, delivering future-ready and scalable solutions.
Flexible Construction Options
We provide both on-site builds and pre-fabricated containerised solutions to suit project requirements, offering flexibility and efficiency.
Strong Industry Partnerships
We work with leading suppliers and industry partners to ensure access to the best technology and materials for every project.
Commitment to Safety & Quality
Strict safety protocols and rigorous quality control measures are embedded in our processes, ensuring compliance and reliability in every build.


Our Customers
Healthcare Facilities
Food and Beverage Manufacturers
Industrial Manufacturers
Dairy Factories
Tourism Facilities
Marae and Rural Communities
Local Councils
Water Entities
Healthcare Facilities
Food and Beverage Manufacturers
Industrial Manufacturers
Dairy Factories
Tourism Facilities
Marae and Rural Communities
Local Councils
Water Entities
Healthcare Facilities
Food and Beverage Manufacturers
Industrial Manufacturers
Dairy Factories
Tourism Facilities
Marae and Rural Communities
Design and Build Capabilities
Design & EngineeringÂ
Process flow and hydraulic designÂ
Equipment sizing and selectionÂ
3D modeling and plant layout design
Hasop facilitation
Civil site design
Biowins modelling for waste water applicationg
CFD modelling for flow mixing and flow balancing
Energy efficiency optimisationÂ
Safety and operability assessments




Fabrication & ConstructionÂ
Custom steel fabrication
Building containerised water treatment plantsÂ
Certified welding for structural integrityÂ
Pre-fabrication and assembly of key components
On-site installation managementÂ
Project scheduling and contractor coordinationÂ
Site assessments for construction planning
Compliance testing during and after installation
Project Management
Management of multi-discipline contracts
Dedicated Project Management Office (PMO)
Industry-leading project controls systems
ISO-certified delivery (ISO 9001, 14001, 45001)
Transparent stakeholder and client communication
Risk management planning and mitigation
Seamless coordination with suppliers, councils, and subcontractors


Customer Testimonials
Hastings District Council
“FILTEC have demonstrated: strong commitment to the project, pride in their work, high degree of professionalism, willingness and patience to go the extra distance and good value for money.”

Waimate District Council
“My experience with all members of the FILTEC team shows a high degree of professionalism, timely service and problem solving to ensure that WDC needs are met and often exceeded.”

Gisborne District Council
"The FILTEC team have shown in-depth knowledge and understanding of the pre-treatment systems available in the market to help guide GDC through decision-making on an unbudgeted capital project.”

Fonterra Stanhope
"I found the FILTEC design and operations team to be collaborative and helpful throughout the design process. The team was proactive with all design challenges and interfaces and have continued to support and provide maintenance to the plant post construction.”

Selwyn District Council
“We have found FILTEC to be reliable, helpful, and proactive, in general and with the trial plant. The support of the local service team and advice from the engineering team was appreciated… and has provided us with the confidence to proceed to tender for a full scale plant.”

Danone
"FILTEC have demonstrated an in-depth knowledge of reverse osmosis… They have always been willing to provide Danone with ongoing help and support… the FILTEC team were helpful, proactive, professional, and knowledgeable.”

Tararua District Council
“The FILTEC design and project delivery team were helpful, proactive, professional, and provided all the required deliverables in a timely manner.”

Downer
“FILTEC have continually striven to add value, save costs and produce a plant the client can have confidence in to deliver the design outcomes.”

Babbage
“I found the FILTEC design, project management and delivery teams to be collaborative, approachable, and pro-active in progressing the project and solving any challenges that arose.”

South Taranaki District Council
“My experience with FILTEC was gratifying… and a pleasure to deal with. Key contract personnel were always accessible and responded to queries promptly… They were reliable, stayed on schedule despite problems and endeavours to complete the work on time."

Development Partners Ltd
“We have found FILTEC to be professional and proactive in approaching the design and implementation of all matters related to the project.”

Featured Design and Build Projects

UV Water Treatment Plants in Wanaka for Pathogen Prevention

Pre-Treatment System Restoration After Cyclone Gabrielle

Pre-Treatment Plant for Victorian Dairy Manufacturer

Ultrafiltration Membrane for Enhanced Water Quality Â

Sustainable Solutions for Small Community Drinking Water
