Industrial Waters Solutions Group

We Provide an Integrated Approach for Industrial Stormwater and Wastewater Management through Tailor-made Science and Engineering Solutions

Land and Water Pollution Prevention

We specialise in representation and reporting for your business operations compliance:

  • Consent Applications
  • Trade Waste Agreements (TWA)
  • Trade Waste Management Plans (TWMP)
  • Environmental Management Plans (EMP)
  • Environmental Auditing
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Environmental Monitoring and Reporting

We conduct stormwater and wastewater (trade waste) quality monitoring for commercial clients to:

  • Meet Council consent compliance
  • Improve maintenance of treatment devices
  • Determine before and after treatment characteristics
  • Quantify receiving environment contaminant load
  • Identify and remove contaminants
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Treatment System Design and Construction

We engineer and install trade waste and stormwater treatment solutions to:

  • Collect and reuse stormwater
  • Remove contaminants and correct pH
  • Achieve compliance and reduce disposal costs
  • Improve existing treatment plant design
  • Protect the receiving environment
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Passionate about sustainable business and environmental awareness, we work alongside our clients to help them achieve compliance requirements and industry standards

The IWS Group (Industrial Waters Solutions) is your business partner for environmental sustainability in the land and water spheres at industrial sites. Now into our third decade, our professionals pride themselves in their ability to provide comprehensive environmental solutions to industry throughout New Zealand.

The IWS Group comprises of three entities that work in a complementary way, with each entity based around the interests and skills of the owners with significant experience in assisting NZ industry to meet and exceed its environmental obligations.

Overlapping circles Feb 2018

At the start of the business in 1994, the focus was on waste/wastewater. Due to the changing environmental focus in NZ, our work involves the protection or improvement of the ‘waters’ (a term that is becoming widely used in regulatory circles) - stormwater, wastewater and to some degree potable/recycled water. 

We have good working relationships with NZ’s Councils and Water Authorities. We are familiar with the various rules, regulations and Council plans that relate to the protection of natural resources. These are all parts of the practical application of the Resource Management Act (RMA) and its downstream plans and regulations. Our service is personal - the owners of IWS are the ‘workers’ and you will find us and our staff to be professional, personable and pragmatic in solving your issues.

There's a perfect solution to your trade waste or stormwater management needs. We're here to help you find it. 

jim P1050746 sml

Jim has worked in the environmental and chemical industry for 30 years. A trained Environmental Auditor, his experience covers protection of the natural environment and protection of public assets. This includes environmental management plans and procedures, the range of related consents, solution design, the design and building of stormwater treatment solutions and ongoing monitoring.

Jim Maddock

mason P1050734 sml

A mechanical engineer with 40 years’ experience in process, fabrication, petroleum and manufacturing industries in NZ, Mason has been part of the team since 2007. Mason’s role is the management of IWS design and build projects, and the provision of engineering input to the Group.

Mason Brown

tony P1050740 sml

Tony is a scientist with experience in water quality, agriculture, ecology and regional government. Tony’s role includes stormwater monitoring and interpretation, environmental auditing, Environmental Management Plan development and consent writing.

Tony Thompson

mike P1050737 sml

Mike joined the IWS team in 2017 after 15 years in professional environmental engineering services for water and wastewater treatment.  His earlier industrial experience involved engineering support to chemical production, including quality, safety and environmental compliance.  Mike's role involves environmental auditing, solution design, environmental management plans, consenting and engineering input.

Mike Mead

matt P1050729 sml

Matt joined the IWS team in 2017 having worked for 12 years in trade waste regulation and supplying environmental monitoring solutions. He has experience working with a range of food, petroleum, chemical and manufacturing industries. Matt’s roles include trade waste and stormwater monitoring, treatment system maintenance and calibration, consent writing and environmental management plan development.

Matt Simcox


Year Established


Projects Completed


Industrial Clients Represented


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Our Industries

Food and Beverage

  • Food Production
  • Beverage Manufacturing
  • Cereal Production


  • Concrete Production
  • Building Material Manufacture


  • Trucking
  • Warehousing
  • Bulk fuel terminals
  • Truck / rail terminals

Metal Protection

  • Galvanising
  • Metal cleaning
  • Electroplating

Marine Industry

  • Boat yards
  • Antifouling
  • Marinas

Inks, Dyes and Paints

  • Ink Manufacturing
  • Paint Manufacturing
  • Printing

Recycling and Salvage

  • Ferrous, non-metals
  • Tyres, rubber
  • Plastics, paper
  • Automotive salvage


  • Aircraft Washing
  • Jet Engine Internal Cleaning


  • Human and Animal
  • Supplements
  • Cosmetics

Wood and Timber

  • Wood preservation
  • Timber manufacturing

Solid Waste

  • Transfer stations
  • Landfills
  • Truck parking

Chemical Production

  • Agriculture

Industry Review

Reflecting on 25 years in the Environmental Sector

We have so much to protect in New Zealand, and in the wider world – we are all so linked in so many ways.

After 25 years in this field I am convinced that we can have good, sustainable business expansion with a high level of environmental protection. We need both in NZ. We need people to be able to provide for themselves and their families with some pride in their achievement. But we cannot afford to let the strained status of our natural environment degrade any further – and we have to claw back some of the damage already done.

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Contact Us

Based at Ardmore airfield in South Auckland, we have a large office complete with industrial test area and workshop. Feel free to drop by and talk to the team and see what problems we can solve for you.



For any inquiries, questions or commendations, please call:
(09) 298 1238

Contact Info

PO Box 34
Clevedon 2248

495 Airfield Road