Graf

What Graf does

Otto Graf GmbH, trading as Graf, is a privately held German manufacturer founded in 1962 and headquartered in Teningen, Baden-Württemberg. The company develops, produces, and markets plastic and HDPE-based systems for the full water cycle - rainwater harvesting, stormwater management and infiltration, retention and detention, wastewater treatment, separators (grease/oil), and drinking water storage - alongside agriculture/viticulture containers and an industrial container program. Its technology foundation is the proprietary oneSolution family of Sequential Batch Reactor (SBR) wastewater treatment plants (one2clean, one2cleanXtra, oneAdvanced, oneUp, bluecycle) and complementary non-electric oneZero systems, supported by the modular Carat and Platin underground tank platforms that serve as shared chassis across harvesting, treatment, retention, and firefighting applications. Manufacturing runs through in-house raw-material centers in Germany, enabling use of recycled plastics and in-process quality control.

Graf serves four primary segments: residential/homeowners (private rainwater harvesting and garden irrigation via the GARANTIA sub-brand); commercial/industrial (factories, warehouses, retail parks requiring retention and treatment infrastructure); municipal/government (stormwater, flood prevention, 'sponge city' projects); and agriculture/viticulture (water and beverage storage). The company sells through a direct export channel from its German headquarters, a wholly-owned UK subsidiary (Graf UK), and an international distributor network covering Ireland, Australia, India, Southeast Asia, Spain, France, Italy, Poland, Portugal, and China, supported by a multilingual website in eight languages, BIM/specifier tooling, a GRAF TV video platform, and a dedicated trade-fair presence. Pricing is not publicly disclosed, but the product mix - project-based municipal and commercial contracts alongside distributed residential volume through resellers - implies a hybrid transaction model with mix of project-based and channel-based revenue mechanics.

Name

Graf

Legal name

Otto Graf GmbH

Website

https://en.graf.info

Company type

Private

Founded year

1962

Operating status

Operating

Headcount range

11–50 employees

Short description

Otto Graf GmbH (Graf) is a German manufacturer of HDPE-based water management systems, including rainwater harvesting tanks, stormwater infiltration modules, and SBR wastewater treatment plants, serving residential, commercial/industrial, municipal, and agricultural customers through direct export, a UK subsidiary, and an international distributor network.

Ownership category

akta.pro rank

Product category

Water Management Products (Rainwater Harvesting, Stormwater & Wastewater Equipment)

NAICS

Plastics and Rubber Products Manufacturing (326)

SIC

Plastics Products, Nec (3089)

akta.pro primary industry

Stormwater Drainage & Culvert Systems (IMANADAH)

Keywords

• Rainwater harvesting systems
• Stormwater management products
• Wastewater treatment plants
• Plastic tank manufacturing
• Water management equipment

Headquarters

HQ city

Teningen

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Distribution channels3 records

Marketing channels6 records

Core offering

Otto Graf GmbH manufactures and sells plastic tank systems and related components for rainwater harvesting, stormwater management, decentralized wastewater treatment, retention/detention, drinking water storage, and industrial fluid containment. Products are sold under the Graf brand for commercial, municipal, and agricultural buyers, and under the GARANTIA sub-brand for residential / consumer garden applications.

Product overview

GRAF (Otto Graf GmbH) offers a comprehensive water management product portfolio spanning five interconnected domains: Rainwater Harvesting (underground Carat/Platin tanks, overground GARANTIA tanks, filters, pumps, controls), Stormwater Management (EcoBloc modular systems, infiltration tunnels, drainage cells), Retention (detention/retention cisterns, EcoFlow Control, Vortex flow control), Wastewater Treatment (oneSolution SBR systems including one2clean, oneAdvanced, oneZero non-electric systems, Anaerobix septic tanks, separators), and Drinking Water Storage (Diamant/Platin/Carat reservoirs). The portfolio also includes Firefighting Water Tanks, Horticulture & Viticulture containers, and an Industry Program for industrial containers. Products are designed for modular integration, with systems like the Carat tank platform supporting multiple applications (rainwater, wastewater, retention, drinking water) through compatible modular components.

Differentiator

Problem solved

Functional benefit

Brands

• GARANTIA: Brand for garden products including rainwater tanks overground, raised beds, composters, and garden solutions

Products and services

• Carat / Platin / Herkules Underground Rainwater Harvesting Tanks

Named customers25 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• REHAU (Building Solutions): REHAU is a German polymer-based solutions manufacturer with a building solutions division covering water management, stormwater, and rainwater systems. Its product portfolio, geographic footprint, and target customer segments (developers, municipalities, installers) closely parallel GRAF's positioning.
• Poloplast: Poloplast is an Austrian manufacturer of plastic pipe systems, fittings, and tanks used in building technology, water management, and infrastructure applications. Its plastic tank and stormwater product lines overlap directly with GRAF's Carat/Platin underground tank portfolio in Central European markets.
• Roth Werke: Roth Werke is a German manufacturer of plastic tanks and systems for rainwater harvesting, wastewater treatment, and heating/cooling storage. As a fellow German Mittelstand plastics manufacturer in adjacent product categories, it is a directly comparable peer for GRAF's residential and small-commercial tank business.
• Wavin (Orbia): Wavin, part of Orbia, is a major plastic pipe and fittings manufacturer with a significant focus on water management, stormwater, and rainwater harvesting systems. It competes head-to-head with GRAF in residential, commercial, and municipal water management channels across Europe and emerging markets.
• ACO: ACO is a German-headquartered manufacturer of drainage, stormwater management, and water management systems using polymer and concrete products. It directly overlaps with GRAF's stormwater infiltration, retention, and surface water management product lines and serves the same municipal and commercial customer base across Europe.
• Kingspan Environmental: Kingspan Environmental (formerly Kingspan Water & Energy) provides wastewater treatment, rainwater harvesting, and stormwater management solutions across Europe. Its product range and decentralized treatment focus directly overlap with GRAF's SBR wastewater and rainwater harvesting offerings.
• Premier Tech Water and Environment: Premier Tech offers decentralized wastewater treatment, rainwater harvesting, and stormwater management solutions globally. The company competes with GRAF in SBR-style treatment systems and underground water storage, particularly in European and North American municipal and residential channels.

Broad incumbents

• Aquatech: Aquatech is a global water technology and treatment company focused on industrial water, desalination, and reuse. While operating at a larger scale and in different end markets, it overlaps with GRAF's broader water treatment and reuse ambitions (e.g., bluecycle, wastewater reuse systems) and represents a larger incumbent in adjacent segments.
• Veolia Water Technologies: Veolia is a global environmental services and water management giant with a broad portfolio spanning municipal water, wastewater, and stormwater services. It competes with GRAF at the high end of municipal and industrial water projects and represents a scale-incumbent benchmark for the broader water management category.
• Suez Water Technologies & Solutions: Suez provides water and wastewater treatment solutions at municipal and industrial scale, including decentralized and stormwater management offerings. As a large diversified water player, it is comparable to GRAF in category and customer overlap, though it operates at materially greater scale and geographic breadth.

Market position

Strengths5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Graf