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New Zealand Environmental Technologies

Consulting Services for You

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About Us

Consulting with Purpose

NZET is an Engineering Consultancy business formed in 1997
by Stu Clark CP Eng.

The business has grown over the years from a single practitioner to a small multidisciplinary consultancy with 5 full time and one part time employees. 

Being a “boutique” practice, NZET tends to focus on local clients and specific areas of established practice expertise; water and wastewater treatment and reticulation systems, landfills and contaminated sites, individual site / building and smaller subdivision and structural design projects.


A growing area of business over the last few years has been building relocation as the required expertise typically required covers; on site wastewater and water supply, storm water disposal, structural modifications, civil design works including; drives, building platforms, earthworks and retaining walls.

As an additional feature of our practice, New Zealand Environmental Technologies has been the primary New Zealand supplier of foam swabs for pipe cleaning.

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In conjunction with our New Zealand based foam supplier NZET have developed a light but high strength foam swab for use in the pipeline industry.

Swabs are available in a range of sizes from 40 mm diameter up to a metre diameter or larger and can be supplied with or without an impermeable base which assists in developing thrust and preventing bypass.

These swabs are used by many; utility companies, local authorities, and contractors, for the purposes of; pipe cleaning, pipe drying, air removal for pressure testing of new pressure mains, and similar purposes.

Listed below is a range of the sizes held in stock along with prices. Specials not on the list, sizes which happened to be out of stock, or swabs fitted with end plates and draw wires will require approximately 15 working days to produce and deliver. 

To order foam swabs please open fill out and send via email or fax the order form from the link below


Swab Order Form

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Some example images of past jobs showing the Swabs after removal.

Sconde unit after removal
Tape Removed
Padding removed from container designed to hold sconde - Still in good condition
Used Swab with fitted end plates and draw wire
Large Swab removed from the Ocean outfall
Used Swab with fitted end plates and draw wire
Large Swab removed from the Ocean outfall

Our Team

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Engineering Consultant


Senior Engineering Consultant


Engineering Consultant


Engineering Consultant (Structural Specialist)


Field Technician



Contact Us

81 Gillespies Road,
Upper Hutt,

PO Box: 40339

Toll Free Number: 0800 003 098

Fax: (04) 526 7589

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