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ACO facts and figures – expansion with a clear focus

As a family enterprise under the direction of Hans-Julius Ahlmann and his son Iver Ahlmann, ACO can develop and implement long term strategies without bending to external pressure. Our success proves us right. Thanks to internationalisation and diversification we can balance out large fluctuations in local construction sector markets, and stabilise our expansion course.

The ACO Group is a world market leader in drainage technology. Climate change sets us a challenge to react effectively with innovative solutions to new environmental conditions. With its integrated approach, ACO stands for professional drainage, efficient cleaning, and the controlled discharge or reuse of water. Products include drainage channels and drains, oil and grease separators, backflow stop systems, pumps and pressure-water-tight cellar windows and light shafts.

The family-owned company headquartered in Rendsburg/Büdelsdorf, Germany, was founded in 1946 on the site of the Carlshütte foundry – Schleswig-Holstein’s first industrial company. It still has very strong roots in the region. The innovation strength of the ACO Group is built on intense research and development, and its technical expertise in processing polymer concrete, plastic, cast iron, stainless steel and reinforced concrete.

5,400 employees are engaged by the ACO Group
worldwide. About 1.650 of them work at locations
in Germany.

The ACO Group generated sales of
Euro 1.14 billion in 2023.

Everything at a glance: Download ACO fact sheet
as PDF file

Strategic Growth


  • Set up glass fibre reinforced plastic production in Monroe, North Carolina, USA


  • Acquired Polycrete, Sydney, Australia
  • Acquired Inotec, Switzerland


  • Acquired Plastmo Group Scandinavia, England and Poland


  • Start of production in Legionowo, Poland
  • Acquired Signum, Germany
  • Acquired Hvidbjerg Vinduet, Denmark
  • Acquired AWK Guss- und Amaturenwerke, Kaiserslautern


  • Production start-up in Maçanet, Spain


  • Expansion of stainless steel production in Pribyslav, Czech Republic
  • Acquired Poly Bau, Switzerland


  • Acquired Passavant Entwässerungs- und Abscheidetechnik Germany, Switzerland, Italy, Belgium, Holland
  • Expansion in south-east Europe: Rumania, Croatia, Bulgaria


  • Acquired Yankee Plastic, USA


  • Acquired DJ Muller, Australia
  • Acquired Multi-Lite, Denmark


  • Acquired Compasso, Italy


  • Acquired Funki Tech A/S, Denmark
  • Expansion into China and the United Arab Emirates


  • Integration of the Möck drainage programme
  • Acquired separator specialist TTM, Sweden


  • Founded Aguss Vertrieb GmbH
  • Founded ACO Eurobar GmbH


  • Production start-up in the new ACO factory in Casa Grande/Phoenix, Arizona, USA
  • Expansion into India


  • Expansion of polymer production in Rendsburg/Büdelsdorf, Stadtlengsfeld and Tabor, Czech Republic


  • Acquired Hestag and Fritschi, Switzerland
  • Set up stainless steel production in Dubai


  • Opened polymer concrete production in Shanghai
  • Acquired Finnish separator manufacturer Ekopinta


  • Established Distribution Companies in Brazil and Mexico


  • Established Distribution Company in New Zealand
  • Acquired Havo Strangguss GmbH, German
  • Established Distribution Company in South Africa
  • Established Distribution Company in Morocco


  • Acquired Hydrocast SARL, France
  • Established Distribution Company ACO Funki in Russia
  • Established Distribution Company in Chile
  • Established Distribution Company in Columbia
  • Established Distribution Company in Mozambique
  • Expansion of production sites in Dubai and Istanbul


  • Acquired ALLERUP TEKNIK AS, Denmark
  • Acquired Egebjerg International and Master Trading, Denmark


  • Establishment ACO Casting Services South Africa Pty. Ltd., Johannesburg, South Africa


  • Production start-up in the ACO factory in Jacareí, Brazil
  • Stainless steel production start-up in the ACO factory in Shanghai, China
  • Acquired Rofo Engineering, Johannesburg, South Africa


  • Acquired Plastmo Polska, Poland
  • Established Distribution Company in Saudi Arabia
  • Acquired ECOLINE Ltd, Russia


  • Acquired DETEGO Schachtabdeckungssysteme GmbH & Co. KG, Mülheim-Kärlich, Germany
  • Established Distribution Company in Vietnam
  • Acquired SG Railing AS, Arna, Norway


  • Acquired MufleSystem S.r.l., Italy


  • Acquired OCIDO, France


  • Acquired separators business (SEPA) from TECE
  • Acquired separators, industry and kitchen drainage business (formerly known as BASIKA) from MAGUS
  • Acquired Resitec AG, Switzerland


  • Acquired Goslyn LLC, USA
  • Acquired Remosa, Spain
  • Established Distribution Company in Malaysia
  • Acquired Aquafix Milieu, Netherlands
  • Established Distribution Company in Singapore


  • Acquired Betonwerk Neu-Ulm, Germany
  • Acquired elastoform, Germany