GRAF tank yard and warehouse docks filled with underground storage tanks ready for dispatch

About GRAF Australia

Engineering water for every Australian site

More than 60 years of German plastics engineering, combined with local manufacturing and application expertise across Australia.

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GRAF Australia

Capture, protect and treat water at every scale

GRAF Australia provides systems that harvest rainwater, manage stormwater, treat wastewater and control grease and trade waste. From a backyard tank to a civil detention field, we specify for the site, the council rules and the Australian climate.

We combine the legacy of Otto Graf GmbH with local manufacturing and a national warehouse network. That means German-engineered platforms, adapted and supported here for drought, flooding, contaminant control and long service life.

GRAF Australia acknowledges the Traditional Owners of Country throughout Australia, and pays our respects to Elders past, present and emerging.

XXL GRAF tank on a specialised transporter leaving the manufacturing yard

Large civil excavation prepared for a GRAF XXL underground water system — From residential tanks to XXL civil systems, GRAF scales with the project.

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Mission & values

Clean water for now and the future. How we design, manufacture and specify for Australian conditions.

Our team

Sales, technical, operations and support. People first, water specialists second.

Sustainability

Recycled plastics, circular manufacturing and water protection at every step.

Germany HQ

60+ years of Otto Graf GmbH, from Teningen to 80+ export markets worldwide.

Bales of recycled plastic feedstock used in GRAF manufacturing

Circular materials

Products born from recycled plastic

Across the GRAF group, post-consumer plastic is processed into the tanks and modules that protect water on site. Using recycled feedstock cuts virgin polymer demand while keeping the strength and lifespan Australian projects need.

Read our sustainability story

Why specify GRAF

Built for Australian conditions

Quality you can trust

GRAF products are manufactured to meet ISO 9001, ISO 50001 as well as AS/NZS 1546.1 and AS/NZS 4766. Independent audits back the standards we ship to Australian sites.

Proudly Australian made

Our rotomoulded products are manufactured in Western Australia, with strict production control and quality management, supporting Australian jobs and the local economy.

Built from recycled plastic

Across the GRAF group, thousands of tonnes of recycled plastic become tanks and modules every year. Longevity on site is part of the sustainability story, not an afterthought.

The family

Seven brands, one water platform

GRAF

Rainwater harvesting and stormwater management: underground tanks, filters and detention systems engineered from recycled plastics.

GARANTIA

Above-ground and underground tank platforms for residential and commercial rainwater storage.

KLARO

Wastewater treatment plants and grease separators for homes, commercial kitchens and remote sites.

HAURATON

Surface drainage channels, grates and access covers for civil and landscape projects.

GRAF Treatment

Hydroshark sedimentation and Hydrosystem filtration for decentralised stormwater and rainwater treatment.

BIOROTOR

Modular rotating biological contactor wastewater treatment for residential, commercial and industrial sites.

HUESKER

Geogrids, geotextiles and geocomposites for civil engineering, roads and earthworks reinforcement.

Our heritage

Engineering the future, built on decades of history

1962
Otto Graf GmbH founded
Otto F. Graf and Elfriede Graf found Otto Graf GmbH in Germany. The early business sold plastic containers and drums for fruit and wine growing, then industrial tanks.
1974
First GRAF rainwater butts
Market launch of the first GRAF water butts under the idea that “rainwater is free” - the foundation of today’s rainwater harvesting range.
1978
Underground rainwater tanks
Plastic underground rainwater tanks open a new product segment. The French subsidiary relocates to Dachstein (Alsace) and starts rotational moulding.
1997-2001
Herkules, infiltration & wastewater
Herkules tank logistics innovation, first-generation percolation blocks for infiltration and retention, then fully biological wastewater treatment systems.
2007-2008
Carat S and Australia
Launch of the Carat S underground tank supports global export growth. Sales branches are founded in Australia and the United Kingdom.
2014
KLARO joins the group
After more than a decade of partnership, Otto Graf GmbH takes over Klaro GmbH - consolidating decentralised sewage expertise within the GRAF Group.
2017-2022
Global growth & 60 years
GRAF Polska, the Herbolzheim Competence Center Raw Materials, the Neuried factory and further international subsidiaries expand recycling and manufacturing. Otto Graf GmbH marks its 60th anniversary in 2022.
Today - Australia
GRAF Australia
Part of the GRAF Group of more than 700 people worldwide, GRAF Australia manufactures rotomoulded products in Western Australia and specifies German-engineered rainwater, stormwater and wastewater systems for Australian sites.