Directory A–Z

Water sector companies: O

164 company and organisation profiles starting with O. Search and filter the full directory →

A B C D E F G H I J K L M NOP Q R S T U V W X Y Z 0–9

O'Connor Utilities

Utilities Contractor · Warrington

O'Halloran & O'Brien Limited

O'Rourke Construction & Surface Ltd

Circular Economy / Materials · Spresiano (TV), Italy

O.M.F.B. S.p.A. Hydraulic Components

Water & Environmental Technology · Provaglio d'Iseo, Italy

O.M.I.S.A. S.r.l.

Waste Treatment / Processing · Sovico, Italy

Waste & Environmental Services · Tortona (AL), Italy

Oakfield Industrial Ltd

Mechanical & Electrical Engineering · Lydney

Oaklands Environmental Ltd

Water Technology / Services · Bremen, Germany

OBALY ENVIRONMENTAL PROTECTION CO LTD

Waste & Environmental Technology · TIANZHUANG TOWN PINGDU QINGDAO, People's Republic of China

obduramus Umwelttechnik GmbH

Digital Water / Analytics · Schömberg, Germany

Digital Water / Analytics · Triesen, Liechtenstein

OCCO Vision s.r.o.

Sewer Systems / Stormwater · Vranany, Czech Republic

Ocono Holding GmbH

Digital Water / Analytics · Mülheim an der Ruhr, Germany

OCS Group UK Ltd

Water & Environmental Technology · Siegen, Germany

Civil Engineering & Construction · Stockport

oddesse Pumpen- und Motorenfabrik GmbH

Waste Management / Collection · Oschersleben, Germany

Odour Control Systems Ltd

Water Industry Supplier · Flintshire

Oekermann GmbH & Co. KG

Recycling / Resource Recovery · Bielefeld, Germany

Sludge Treatment / Biogas · Föhren, Germany

Water & Environmental Technology · Brannenburg, Germany

OEM Automatic Ltd

Instrumentation & Monitoring · UK

Off Mains Solutions Ltd

Off Mains Drainage / Septic Tanks / Sewage Treatment Plants / Drainage Fields · UK

Office for National Statistics

Government · Newport

Officina Fiandri s.r.l.

Field Equipment / Civil Engineering · Modena, Italy

OFFICINE DI CARTIGLIANO S.P.A.

Wastewater Treatment · Cartigliano (VI), Italy

Officine di Trevi di Fioretti & C. S.a.s

Waste Management / Collection · Trevi, Italy

Offshore Systems International

Digital, Data & AI · Malvern

Ofqual Northern Island

Government · Belfast

OFS Online Fluid Sensoric GmbH

Instrumentation & Monitoring · Germany

Water & Wastewater Technology · Dorsten, Germany

Economic Regulation / Water Industry Regulator · Birmingham, UK

Ofwat (Water Services Regulation Authority)

Regulator · Birmingham

Ofwat Innovation Fund recipients

OGI Groundwater Specialists

Civil Engineering & Construction · Newcastle

Ogilvie Fleet Limited

Site Services · Stirling

Recycling / Resource Recovery · Paris, France

OilQuick Deutschland KG

Field Equipment / Civil Engineering · Steindorf, Germany

Okeanos Smart Data Solutions GmbH

Recycling / Resource Recovery · Bochum, Germany

Oklin International ltd.

Waste & Environmental Services · Tsim Sha Tsui, Kowloon, Hong Kong

OKO-tech Vertriebsgesellschaft mbH

Sewer Systems / Stormwater · Hessisch Oldendorf, Germany

Oldcastle Infrastructure (CRH)

Environmental Services · USA (CRH subsidiary)

Oldenburgisch-Ostfriesischer Wasserverband

Recycling / Resource Recovery · Brake, Germany

Oldham Metropolitan Botough Council

Oleodinamica Panni S.r.l.

Water & Environmental Technology · Citadella (PD), Italy

OLFASENSE UK LTD

Odour Measurement · Towcester

Olivetti e Figliola Srl

Waste Treatment / Processing · Bibbiano (RE), Italy

Olypic Delivery Authority

Government · London

Flow Measurement / Monitoring · Crissey, France

Omega Red Group Ltd

Environmental / Waste Services · Doncaster

Omerastore GmbH

Sewer Systems / Stormwater · Lauter-Bernsbach, Germany

OMEX Environmental

Chemicals & Dosing · King's Lynn

Omexom (VINCI Energies)

Civil Engineering & Construction · Nottingham

Water Supply / Distribution · Falconara Marittima, Italy

Omnia Consulting Ltd

Omniplex (Group) Limited

Omnis Construction & Project Management

Civil Engineering · 4 Hornet Court 34 Hurricane Way Airport Industrial Estate

OMNIS ELECTRICAL LTD

Mechanical & Electrical Engineering · Telford

OMSI Trasmissioni S.p.A.

Water & Environmental Technology · Roé Volciano, Italy

OMVE VEZZANI SRL

Waste Management / Collection · Guastalla, Italy

Sewer Systems / Stormwater · Köln, Germany

On Event Production Co. Ltd

Events / Production · Nottingham

One Thousand GmbH

Water & Wastewater Technology · Berlin, Germany

OneLine Surveys Ltd

Surveying · Luton

Online Cleaning Technologies GmbH

Sludge Treatment / Biogas · Kiel, Germany

Onpoint Logistics Limited

Logistics · Wigan

OnSite Central Ltd

Midlands, UK · Northampton

Field Services · Preston

Opal Ingénierie

Waste & Environmental Technology · Bourg, France

OPEN ENERGI LTD

Smart Metering & IoT · London

Openfield Agriculture Limited

Agricultural Trading · Nottingham

Water & Wastewater Technology · Bozen, Italy

Optigrün International AG

Waste Treatment / Processing · Krauchenwies-Göggingen, Germany

OPTIMA METAL TEKNIK LTD STI

Water & Environmental Technology · KONYA, Turkey

Network Optimisation Software · UK / Australia

Water Technology / Services · Tübingen, Germany

OPTYMA SECURITY SYSTEMS LTD

Instrumentation & Monitoring · Watford

OPUS Utility Solutions Limited

Oracle Corporation UK Ltd

Digital & Data · Reading

ORAKCI MAKINA IMALAT ITH.IHR.SAN ve TIC. A.S

Water Technology / Treatment · Bursa, Turkey

Orbinox (UK) Limited

knife gate valves, slide valves and automated valve actuation · Chichester

Flow Measurement / Monitoring · Anoeta (Gipuzkoa), Spain

Orbis Protect Ltd

Orbital Gas Systems Ltd

Gas Safety / Emergency · Preston

Orca Systems UK Ltd

Orca Technology Ltd

Acoustic Leak Detection / Hydrophone Loggers / Trunk Main · UK

Orca Water Group

Consultancy & Professional Services · Stirling

Ordanance Survey

Government · Southampton

Ordnance Survey of Northern Island

Government · Belfast

Water Supply / Distribution · Paris, France

Recycling / Resource Recovery · Düdingen, Switzerland

Oren Environmental Ltd

Orenco Systems Inc.

Sewer Systems / Stormwater · Sutherlin, United States of America

Organica Water Ltd

Organics Group Ltd

Biological Odour Treatment / Air Biofilters / Environmental · UK

ORGANO Corporation

Ultra-Pure Water / Ion Exchange / Water Treatment Engineering · Japan (international)

ORGLMEISTER Brandschutz GmbH & Co. KG

Waste & Environmental Technology · Walluf, Germany

ORI Abwassertechnik GmbH & Co

Pumps / Valves / Instrumentation · Hille, Germany

Origin Tech Ltd

ORION ENVIRONMENTAL SERVICES LTD

Environmental / Waste · Northwich

Circular Economy / Materials · Fannrem, Norway

Orkney Builders (Contractors) Ltd

Orkney Islands Council

Ormonde Int. s.r.o.

Water & Wastewater Technology · Ostrava-Hrabová, Czech Republic

ORPU Pumpenfabrik GmbH

Waste Management / Collection · Oranienburg, Germany

Orsted Sales (UK) Limited

Utilities · London

Circular Economy / Materials · Sävsjö, Sweden

Automation / Controls · Stroud

Osborne Clarke LLP

Consultancy & Professional Services · Bristol

Oschatz Power GmbH

Sludge Treatment / Biogas · Essen, Germany

Water Supply / Distribution · Montréjeau, France

OSIL Odour Control International Ltd

Water Industry Supplier · Staffordsire

OSIsoft (AVEVA PI System)

Operational Data / Historian / SCADA Data Management · USA (UK market active, via AVEVA)

OSMO Membrane Systems GmbH

Water Supply / Distribution · Leonberg, Germany

OSMOND GROUP LIMITED

Civil Engineering / Utilities · Bristol

Osprey Consulting Services Ltd

Site Services · UK

OSS Enviro Global

Ostara Nutrient Recovery Technologies

Treatment Technology & Equipment · Vancouver

OSWALD SCHULZE Umwelttechnik GmbH

Wastewater Treatment · Gladbeck, Germany

OT GROUP LIMITED

Office Technology / Print · Ashford

OTB Engineering Ltd

Mechanical & Electrical Engineering · Wrexham

Water Technology / Treatment · Köln, Germany

OTT Hydromet GmbH

Pumps / Valves / Instrumentation · Kempten, Germany

OTT System GmbH & Co.KG

Sewer Systems / Stormwater · Langenhagen, Germany

OTTO DÖRNER Entsorgung GmbH

Water Technology / Services · Hamburg, Germany

Otto Ganter GmbH & Co. KG

Wastewater Treatment · Furtwangen, Germany

Sewer Systems / Stormwater · Teningen, Germany

Otto Maierhofer GmbH

Digital Water / Analytics · Rosenheim, Germany

Otto-von-Guericke-Universität Magdeburg / TUGZ

Waste & Environmental Technology · Magdeburg, Germany

OutForm Consulting

Consultancy & Professional Services · Belfast

Ovarro Ltd (formerly Primayer)

Flow Measurement / Leak Detection · Basingstoke, Hampshire

Fit-Out / Refurbishment / Commercial Interiors · UK (Morgan Sindall Group)

Water Industry Supplier · United Kingdom

Owen PUGH & Co.Ltd

Civil Engineering & Construction · Bromley

Oxalis Instruments Ltd

Instrumentation · Lydney

Oxera Consulting LLP

Oxford Centre For The Environmnet

Training & Education

Oxford Centre For Water Research

Training & Education

Oxford Economics Ltd

Economic Research · London

OXFORD FLOW LTD

Pressure Control Technology · Banbury

Oxford Plastic Systems Ltd.

Digital Water / Analytics · Enstone, Oxfordshire

Recycling / Resource Recovery · Schlieren, Switzerland

Sewer Systems / Stormwater · Birkerød, Denmark

MABR / Membrane Aerated Biofilm Reactor / Wastewater Treatment · Ireland (UK market active)

Sludge Treatment / Biogas · Zürich, Switzerland

Recycling / Resource Recovery · Seoul, South Korea

Ozcihan Makina San. ve Tic Ltd. Sti

Water & Environmental Technology · Istanbul, Turkey

Ozonia Ltd (Suez)

Ozone Disinfection / Advanced Oxidation / Water Treatment · Global (UK market active)