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Stormwater Treatment


Humes provides Gross Pollutant Traps (GPTs) for the primary treatment of pollutants and hydrodynamic separators for secondary treatment.
Sales: 1300 361 601
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HumeGard® Gross Pollutant Trap (GPT)
Primary Treatment

HumeGard® Gross Pollutant Traps (GPTs)

HumeGard® GPTs provide primary stormwater treatment by capturing gross pollutants and coarse sediments before they enter downstream waterways, delivering proven performance with low headloss and reliable operation across residential, commercial and retrofit applications.

HumeCeptor® Hydrodynamic Separator
Secondary Treatment

HumeCeptor® Hydrodynamic Separators

HumeCeptor® systems deliver effective secondary stormwater treatment by removing hydrocarbons and fine suspended solids through hydrodynamic and gravitational separation, supporting high water quality outcomes for constrained sites, large catchments and critical infrastructure applications.

Case Studies

Case study – Scarborough Beach stormwater upgrade, Western Australia
14 January 2026
Scarborough Beach Stormwater Upgrade

A trenchless stormwater upgrade at Scarborough Beach using Humes J and S Series jacking pipes was completed ahead of schedule, minimising disruption in a high-traffic coastal precinct.

01 September 2020
Brookwater Estate Stormwater Management | Large-Scale Custom Stormwater Pits

Three large-scale custom stormwater pits were supplied as modular base, chamber, and lid units to support twin DN1500 pipelines at Brookwater Estate. Off-site manufacture enabled rapid installation in just two hours per pit, improving safety, reducing labour time, and delivering a durable, high-quality solution.

Redbank Motorway Estate Stormwater Works
14 January 2020
Redbank Motorway Estate Stormwater Works

Large-diameter DN3000 concrete pipes were used to deliver high-capacity stormwater drainage for the Redbank Motorway Estate, supporting reliable performance under challenging site and tidal river conditions.

Tulladunna Bridge Replacement
14 January 2020
Tulladunna Bridge Replacement

Precast Uniculvert® modules were used to rapidly replace the Tulladunna Bridge in NSW, delivering a durable rail crossing installed in just six days with minimal disruption to operations.

Publications

01 December 2020
HumeCeptor® Class I – Technical Manual
The HumeCeptor® Class I system is an underground modular concrete unit that uses hydrodynamic and gravitational separation to efficiently remove Total Suspended Solids (TSS) and hydrocarbons from stormwater runoff.
Technical Manuals
Stormwater Treatment
01 April 2017
HumeCeptor® System – Inspection and Maintenance Guide
The HumeCeptor® Maintenance Guide outlines procedures for inspecting, cleaning, and maintaining HumeCeptor® stormwater treatment systems to optimise performance and service life.
Maintenance Guides
01 April 2017
HumeCeptor® System – Installation Guide
The HumeCeptor® Installation Guide provides step-by-step instructions for the safe and effective installation of HumeCeptor® stormwater treatment systems.
Installation Guides
01 April 2017
HumeCeptor® System – Technical Manual
The HumeCeptor® system is a patented hydrodynamic separator, specifically designed to remove hydrocarbons and suspended solids from stormwater runoff, preventing oil spills and minimising non-point source pollution entering downstream waterways.
Technical Manuals
Stormwater Treatment
07 July 2025
HumeGard HG50 Installation | Stormwater Solution with Custom In-Situ Base
A stormwater treatment project near the banks of the Parramatta River. The HumeGard® HG50 was relocated due to groundwater seepage and installed in just 3.5 hours using adjustable moulds, demonstrating adaptability and efficiency while ensuring effective
Case Study Brochures
01 May 2015
HumeGard® GPT - Inspection & Maintenance Guide
The HumeGard® Maintenance Manual outlines inspection, cleaning, and servicing procedures to maintain effective stormwater treatment and extend system lifespan.
Maintenance Guides
01 January 2023
HumeGard® GPT – Installation Guide | Issue 3
The HumeGard® Installation Guide details the procedures for correctly installing HumeGard® systems to ensure effective stormwater treatment and long-term performance.
Installation Guides
01 November 2020
HumeGard® GPT – Technical Manual
The HumeGard® Technical Manual provides detailed design, specification, and performance information to support the effective application of HumeGard® systems.
Technical Manuals
Stormwater Treatment
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Holcim (SIX: HOLN) is the leading partner for sustainable construction with net sales of CHF 16.2 billion1 in 2024, creating value across the built environment from infrastructure and industry to buildings. Headquartered in Zug, Switzerland, Holcim has more than 45,000 employees in 44 attractive markets – across Europe, Latin America and Asia Pacific, Middle East & Africa. Holcim offers high-value end-to-end Building Materials and Building Solutions, from foundations and flooring to roofing and walling – powered by premium brands including ECOPlanet, ECOPact, and ECOCycle®.

Humes is a division of Holcim Australia – a leading supplier of aggregates, ready-mix concrete, and engineered concrete solutions and precast concrete pipes. Holcim Australia was certified as a Top Employer 2025/2026 by the Top Employers Institute, a global authority on recognising excellence in people and culture.

1Net sales 2024 restated following spin-off; excludes net sales to Amrize.

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