Water infrastructure materials in 2026: planning ahead for a smoother season

Published on:
March 27, 2026

If you’re considering an irrigation upgrade, a new tank install, or any water infrastructure project this year, there’s a part of the process that’s easy to overlook, but increasingly important: material supply.

At WaterForce, we work across a wide range of irrigation and wastewater projects, and like much of our industry, we source products from both New Zealand and overseas. Many of these including pipes, fittings, tanks, and liners rely on polyethylene (PE) and other plastic-based materials.

Right now, global supply conditions for these materials are a bit more unpredictable than usual, and it’s something worth being aware of as you plan your project.

What’s influencing supply at the moment?

A significant portion of the world’s polyethylene and polypropylene (plastic resin) is produced in the Gulf region. Ongoing tension and disruption affecting shipping routes in that part of the world are creating some flow-on effects for global supply chains.

What we’re seeing isn’t a complete shortage, but rather:

  • Less certainty around shipping timelines
  • Occasional gaps in specific product availability
  • Fluctuations in freight and landed costs

For a market like New Zealand, which relies on imported components, these shifts can have a noticeable impact.

Why this matters for NZ irrigation and water projects

From our perspective on the ground, the main challenge isn’t that products don’t exist, it’s that timing becomes less predictable.

In practical terms, that can look like:

  • A key fitting or valve holding up an otherwise ready-to-go install
  • Longer lead times on certain pipe sizes or tank configurations
  • Projects needing small adjustments based on what’s available at the time

Often, it’s not the major components that cause delays, it’s the smaller, specialised items that are harder to substitute at short notice.

What we’re recommending to clients

The good news is that with a bit of forward planning, most of these risks are manageable.

Here are a few simple ways to stay ahead:

  • Start conversations earlier
    Even a quick discussion helps us flag any potential pinch points early.
  • Lock in designs where possible
    Late changes can sometimes mean re-sourcing components that aren’t immediately available.
  • Prioritise longer lead-time items
    Tanks, larger diameter pipe, and specialised fittings are worth securing early.
  • Allow a bit of flexibility
    Being open to equivalent products or alternative specifications can help keep things moving.
  • Build a little buffer into timing
    Especially if your project is tied to a seasonal window.

How this affects our approach

As an importer and installer, our role is to stay close to these changes and help our clients navigate them.

We’re in regular contact with suppliers and are constantly tracking what’s available, what’s moving well, and where delays might occur. That means we can give you a realistic view of timelines and help avoid surprises where possible.

Looking ahead

At this stage, we expect supply conditions to remain variable through 2026. That doesn’t mean projects should be put on hold, it just means the ones that run most smoothly will be the ones that are planned and confirmed a bit earlier than usual.

Talk to us early

If you’ve got a project in mind for this year, getting in touch early can make a real difference.

We can help you:

  • understand what’s readily available
  • identify any items that may need to be ordered ahead
  • set realistic expectations for delivery and installation

A bit of planning upfront goes a long way toward keeping things on track.

Need support?

Need support with your home water, irrigation or infrastructure? Your local WaterForce representative is only a call away.