Marshall Projects Limited

What Marshall Projects Limited does

Marshall Projects Limited is a privately held, family-owned engineering contractor headquartered in Invercargill, New Zealand, founded in 2005 by Managing Director Tom Marshall. The company designs and constructs drinking water and wastewater treatment plants for New Zealand local-government district councils and industrial clients, operating a turnkey delivery model from process design through commissioning. Since 2007, it has completed more than 20 drinking water plants and 2 wastewater plants, with individual contract values ranging from approximately NZ$200,000 to NZ$5.6M or more.

The company's technical offering is anchored by a portfolio of exclusively New Zealand-licensed technologies: Bio-Shell® and Bio-Dome® bioreactors (licensed from the University of Utah), Hexa-Cover® floating covers (licensed from Denmark), and Asahi Kasei Microza™ hollow-fibre microfiltration membranes. These components are integrated into packaged plants certified to AS/NZS S4020:2018 for drinking water contact and designed to meet the NZ Drinking Water Standards 2005. The Paihia wastewater treatment plant, commissioned in 2020 for Far North District Council, features the world's largest Bio-Shell® bioreactor installation alongside a 7,000 m² Hexa-Cover® system.

Revenue is generated primarily through design-and-construct contracts (NZ$200k–NZ$5.6M+ per project), supplemented by equipment supply and longer-tail operational partnerships and managed-service arrangements. Named customers span seven district councils (Far North, South Taranaki, Southland, Clutha, Taupō, Westland, Tauranga) and industrial accounts including Fonterra, Westland Milk Products, and Fulton Hogan. Project delivery is typically executed through consortia with Pall Corporation (membranes), Fulton Hogan (civil works), and Westroads. Recognition includes the 2021 IPWEA NZ Asset Management Excellence Award for Innovation, the 2022 IPWEA Australasia Excellence in Project Innovation award, and SiteWise Gold Status (2021).

Name

Marshall Projects Limited

Legal name

Marshall Projects Limited

Website

https://marshallprojects.co.nz

Company type

Private

Founded year

2005

Operating status

Operating

Headcount range

11–50 employees

Short description

Marshall Projects Limited designs and constructs water and wastewater treatment plants for New Zealand district councils and industrial clients, using exclusively licensed Bio-Shell® bioreactors, Hexa-Cover® floating covers, and Asahi Kasei Microza™ microfiltration membranes.

Ownership category

akta.pro rank

Product category

Water and Wastewater Treatment Engineering Services

NAICS

Sewage Treatment Facilities (221320), Water, Sewage and Other Systems (2213)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro industry

PRIMARYIMAHAEAJ

Water & Wastewater Treatment Plant Equipment (Clarifiers, Aeration, Membrane Systems)

Industrials, Manufacturing & Construction/Industrial Machinery & Heavy Equipment/Process & Industrial Plant Equipment

SECONDARYIMAFAGAA

Water Treatment Plant Construction (Drinking Water)

Industrials, Manufacturing & Construction/Construction & Civil Engineering/Water & Wastewater Infrastructure Construction

SECONDARYEUANADAC

Advanced/Nutrient Removal (BNR/ENR: N, P)

Energy, Utilities & Environment/Water & Wastewater Utilities/Wastewater Treatment & Reuse (Municipal/Industrial)

Keywords

• Water treatment plants
• Wastewater treatment engineering
• Microfiltration membrane systems
• Fixed-film bioreactors
• Design and construct

Headquarters

HQ city

Invercargill

HQ country

New Zealand

HQ region

Oceania

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Design and Construct Contracts: Full-service design, procurement, installation, and commissioning of water and wastewater treatment plants including civil, structural, mechanical, controls, and electrical work. Projects delivered as turnkey contracts for local government councils and industrial clients.
2. Equipment Supply and Installation: Supply and installation of microfiltration equipment, Bio-Shell® bioreactors, Hexa-Cover® floating covers, and associated supporting infrastructure including pipework, electrical, instrumentation and control systems.
3. Operational Partnerships: Ongoing operational support and management partnerships with clients such as Clutha District Council to oversee operation at treatment sites.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Marshall Projects Limited designs and constructs water and wastewater treatment plants for New Zealand district councils and industrial clients. Its offering combines end-to-end project delivery (civil, structural, mechanical, electrical, instrumentation, controls and commissioning) with three proprietary/licensed treatment technologies: Bio-Shell® and Bio-Dome® fixed-film bioreactors for ammonia/BOD removal, Hexa-Cover® floating covers for evaporation and odour control, and Microza™ microfiltration membrane systems from Asahi Kasei for drinking water production.

Product overview

Marshall Projects Limited is a New Zealand engineering firm specialising in the design and construction of water and wastewater treatment plants. Its core product portfolio consists of four distinct offerings: Bio-Shell® Bioreactors and Bio-Dome® Bioreactors (fixed-film pond-based treatment technologies for ammonia, BOD, and TSS reduction in wastewater); Hexa-Cover® Floating Cover (a patented floating pond cover for odour, evaporation, and algae control, exclusively licensed in NZ); and Microfiltration systems using Asahi Kasei Microza™ hollow fibre membranes (for drinking water and industrial water treatment). These technologies are delivered either individually or in combination as part of Turnkey Projects, which bundle civil, mechanical, electrical, and instrumentation works into a complete design-and-construct service. The company does not offer a unified software platform; rather, it provides distinct engineering products that can be deployed together on a project basis.

Differentiator

Problem solved

Functional benefit

Products and services

• Bio-Shell® Bioreactors Fixed-film bioreactors installed on the floor of existing oxidation ponds (minimum depth 1.2m) to reduce ammonia-nitrogen, BOD, TSS and phosphorus in wastewater through nitrification. Patented technology developed by University of Utah professors Kraig Johnson and Larry Reaveley, licensed exclusively to Marshall Projects for New Zealand. Award-winning, modular design enabling incremental pond upgrades.
• Bio-Dome® Bioreactors Spherical fixed-film bioreactors for ammonia removal in wastewater ponds deeper than 2m. Companion to Bio-Shell® using the same patented concentric-shell technology, with geometry that guides oxygen through the biofilm to maximise nitrification. Licensed to Marshall Projects for New Zealand.
• Hexa-Cover® Floating Cover Patented self-organising floating cover system made of recycled foamed polypropylene, licensed exclusively to Marshall Projects in New Zealand. Self-distributes across fluid surfaces, automatically adapts to level changes, and fits all shapes and geometries. Reduces evaporation by up to 95% and odour emission by up to 96%, controls algae growth and deters waterfowl. Certified for potable water contact per AS/NZS S4020:2018, with a 25-year expected lifetime and 10-year warranty.
• Microfiltration (Microza™) Systems Hollow-fibre microfiltration membrane systems using Asahi Kasei Microza™ modules to remove suspended solids, bacteria, cysts, iron, manganese, arsenic and organics from ground/surface water and secondary effluent. Delivered in plant capacities from 150 to 35,000 m³/day with automated controls and high recovery rates (e.g. 99.97% feedwater recovery at Hokitika WTP).
• Turnkey Design and Construct Projects End-to-end design-and-construct delivery of water and wastewater treatment plants for New Zealand district councils and industrial clients. Scope covers civil, structural, mechanical, electrical, instrumentation, controls and commissioning, delivered using in-house resources and approved sub-contractors, with contract values ranging from approximately NZ$200,000 to NZ$5.6 million and ongoing operational support partnerships (e.g. Clutha District Council).

Quantifiable outcome

• Ammonia reduced from 50 mg/L to <2 mg/L at Paihia WWTP
• +9 more outcomes

Named customers9 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• Pall CorporationcoreStrategic or Co-development PartnerLong-standing strategic partnership delivering water treatment projects since 2007. Multiple consortiums formed: South Taranaki Water Consortium, Pall Marshall Water Consortium, West Coast Water JV/Consortium. Pall provides Aria microfiltration membrane systems (AP-2, AP-4, AP-6, Custom 8” units) while Marshall Projects handles design, installation, and commissioning. Partnership has delivered 15+ projects across New Zealand.
• Asahi KaseicoreTechnology or IntegrationSupplier of Microza™ hollow fibre microfiltration membrane modules. Asahi Kasei's membrane technology dates back to the 1970s. Marshall Projects has delivered more than 20 treatment plants using Microza™ membranes since 2007, ranging from 150 to 35,000 m³/day capacity.
• University of Utah (Kraig Johnson and Larry Reaveley)coreTechnology or IntegrationDevelopers of Bio-Shell® and Bio-Dome® bioreactor technology. The patented technology was developed by University of Utah professors. Marshall Projects holds exclusive license for New Zealand market.
• Hexa-Cover A/S (Denmark)coreTechnology or IntegrationDanish developer of patented Hexa-Cover® Floating Cover system. Marshall Projects Limited is the only New Zealand company licensed to supply this unique product. Partnership enables control of odour, evaporation, algae growth, and UV effects on water surfaces.
• Marshall IndustriescoreStrategic or Co-development PartnerSister/parent company managed by Tom Marshall. Provides fabrication and installation services for water and wastewater projects. Enables Marshall Projects to maintain a valued and skilled resource base. Marshall Industries has long history dating to Owen Marshall Plumbing (1936) with roofing manufacture, installation and engineering work.
• WestroadsminorChannel Partner/ Reseller/ DistributorFormed Harihari Water Consortium with Marshall Projects to complete the new Harihari Water Treatment Plant and rising main. Westroads provided civil works while Marshall Projects delivered water treatment solutions.
• Fulton HoganminorStrategic or Co-development PartnerCivil and construction contractor for Taupō Water Treatment Plant project. Marshall Projects completed additional mechanical installation work for Fulton Hogan as main contractor. Also partnered on Akaroa Water Treatment Plant project.
• Clutha District CouncilminorStrategic or Co-development PartnerPartnership formed to oversee operation at Heriot and Kaitangata wastewater treatment plants. Marshall Projects maintains ongoing relationship beyond project delivery for operational support.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• WesTech Engineering: WesTech supplies water and wastewater treatment equipment and systems (including membrane and biological processes) to municipal and industrial customers. It is comparable as an equipment-focused supplier competing with Marshall Projects' Microza™ and Bio-Shell®-based solutions for similar treatment plant applications.
• Stantec: Stantec is a global engineering consultancy with a significant water practice that designs and delivers municipal water and wastewater treatment infrastructure. It competes for the same NZ council design-and-construct commissions and provides comparable water treatment engineering services.
• SUEZ Water Technologies & Solutions: SUEZ provides water and wastewater treatment equipment and services, including membrane and biological systems, to municipal and industrial clients worldwide. It is a broad incumbent peer competing for similar council upgrade projects and offering overlapping treatment technologies.
• Veolia Water Technologies: Veolia is a global water and wastewater treatment EPC and equipment provider operating across municipal and industrial markets. It is comparable as a broad incumbent competing for the same NZ council upgrade work and supplying similar membrane and biological treatment technologies.
• Jacobs Engineering: Jacobs is a global engineering and construction firm with extensive water and wastewater treatment design-build capability. It is comparable as a broad incumbent bidding on the same NZ municipal water infrastructure programs and offering similar EPC services.

Regional players

• Trility: Trility is an Australasian water and wastewater specialist focused on design-build-operate projects for municipal and industrial clients. It is comparable to Marshall Projects because of its regional focus on small-to-mid scale municipal treatment plants and similar reliance on licensed membrane and biological treatment technologies.

Emerging players

• Fluence Corporation: Fluence Corporation provides decentralized and packaged water and wastewater treatment solutions globally, including membrane and biological systems. It overlaps with Marshall Projects in the delivery of modular biological treatment and is relevant as a competitor for small-to-medium municipal and industrial wastewater projects.
• H2O Innovation: H2O Innovation designs and supplies membrane filtration systems and specialty chemicals for water and wastewater treatment to municipal and industrial customers globally. It overlaps with Marshall Projects in the membrane systems business and competes for similar municipal drinking water upgrade projects.

Direct peers

• Pall Water: Pall Water (a division of Pall Corporation) supplies Aria microfiltration membrane systems for drinking water and wastewater treatment and is Marshall Projects' longest-standing consortium partner. It is directly comparable because it sells the same membrane-based water treatment technology into municipal and industrial markets via design-build channels.
• Cobalt Water: Cobalt Water is an Australia/New Zealand water and wastewater treatment specialist delivering design, construct, and operate projects to councils and industrial clients using proprietary and licensed technologies. It is directly comparable given its shared trans-Tasman focus, council customer base, and bundled technology + turnkey delivery model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/marshall-projects-limited

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Marshall Projects Limited