In this episode of Developing WA, Kai and Russell go through the 2025 AS 3500 changes and what they actually mean on site. Parts one, two and four have been mandatory in WA since 1 May 2026, and Russell walks through the ones people are most likely to get caught by.

You'll hear what the new flexible hose classes mean for the flexi sitting under your sink, why a waterless urinal can now need a flushing device fitted to it, and why stormwater is the only unregulated section of AS 3500 in WA — the section behind 95% of the disputes Russell gets called into.

 

Connect:
Russell on LinkedIn
OTG website
OTG on Instagram
OTG on Facebook
OTG on LinkedIn

In this episode of Developing WA, Kai and Russell go through the 2025 AS 3500 changes and what they actually mean on site. Parts one, two and four have been mandatory in WA since 1 May 2026, and Russell walks through the ones people are most likely to get caught by.
You'll hear what the new flexible hose classes mean for the flexi sitting under your sink, why a waterless urinal can now need a flushing device fitted to it, and why stormwater is the only unregulated section of AS 3500 in WA &mdash; the section behind 95% of the disputes Russell gets called into.
&nbsp;
Connect:
<ul>
<li aria-level="1"><a href="https://www.linkedin.com/in/russell-green-243832234/">Russell on LinkedIn</a></li>
<li aria-level="1"><a href="https://otghydraulicdesign.au/">OTG website</a></li>
<li aria-level="1"><a href="https://www.instagram.com/otghydraulicdesign">OTG on Instagram</a></li>
<li aria-level="1"><a href="https://www.facebook.com/otghydraulicdesign">OTG on Facebook</a></li>
<li aria-level="1"><a href="https://www.linkedin.com/company/otghydraulicdesign/people/">OTG on LinkedIn</a></li>
</ul>

Developing WA is a show about what it really takes to develop property in Western Australia. On the show, you'll hear from the architects designing property for Perth, the developers betting millions all over WA, and the engineers, planners, and builders growing the Western Australian community. Hosted by Russell Green, Founder of OTG Hydraulic Design.

Developing WA is a show about what it really takes to develop property in Western Australia. On the show, you'll hear from the architects designing property for Perth, the developers betting millions all over WA, and the engineers, planners, and builders growing the Western Australian community. Hosted by Russell Green, Founder of OTG Hydraulic Design.

A show about what it really takes to develop property in Western Australia.