We help you improve the way you process, treat and manage water.

With 40 years of experience and a reputation for engineering excellence, people all over the world rely on our products and services to increase operational performance and reduce environmental impact.

Learn more

Who is Hydro International?

We are a global company who provide advanced products, services and expertise to help municipal, commercial and industrial customers to improve the way they process, treat and manage water.

Our Products

Manage flooding, improve water treatment and reduce water pollution

Our Services

Design, install, operate and maintain effective water management systems

Resources

View our resources in the municipal, industrial and construction sectors

How can we help?

Control the flow of storm and surface water, deliver effective water management projects and cut the risk of flooding to homes, businesses and infrastructure.

Climate change and urban growth have contributed to an environment in which flooding is an increasingly frequent and damaging occurrence. Sustainable, water-sensitive and low-impact development initiatives around the world highlight the need for effective flood mitigation, and forward-thinking engineers are combining natural and proprietary water management products to deliver the best possible protection.

Our flow control and storage products help engineers to design systems that slow and hold water during storm events, preventing and controlling flooding, mitigating flood risk and reliably protecting people and property.

Remove grit and solids to improve water quality and reduce sludge handling costs at water and wastewater treatment plants.

Growing populations are placing a greater operational burden on existing water treatment facilities, and both current plants and new projects must contend equally with the damaging and costly effects of grit. Solids carried in wastewater accumulate in the downstream processes, which reduces plant efficiency as well as causing damaging abrasion to treatment systems—increasing operational and maintenance costs.

Our grit management technologies protect downstream processes, cutting maintenance and preventing clogging and deposition. Our sludge management products improve dewatering and reduce solids handling.

Meet environmental obligations, improve operational efficiency and cut maintenance costs by managing, recycling and reusing process water and wastewater.

Water scarcity, increasingly stringent effluent discharge regulations and operational efficiency drivers represent real challenges for water-intensive industrial businesses. With process water use, treatment and discharge generating both cost and risk. Surface water, too, represents a risk, acting as a vector that carries potentially harmful materials into the environment.

Our industrial water management products help businesses to use water more efficiently, recover valuable processing by-products, meet regulations and protect the environment—saving money and reducing financial and legal risks.

Manage runoff and capture stormwater pollutants to comply with regulations and reduce damage to the environment.

Climate change and urban growth have created more frequent and more intense storm events, and greater areas of impermeable and impervious surfaces. When rain falls on the built environment it generates surface water runoff, which, if not controlled, can cause surface or sewer flooding. The runoff can also pick up a range of pollutants, including oils, heavy metals, nutrients and silt. When this stormwater runoff reaches a storm drain or sewer it transports any pollution into the network, which may discharge directly or indirectly into the environment.

Our flow control products control, store and infiltrate surface water, while our stormwater treatment products catch and retain stormwater runoff pollution before it reaches the environment, preventing damage to fragile and important ecosystems. 

Protect the environment by removing trash, solids and other damaging pollutants from combined sewer overflows.

Combined sewers transport both wastewater and surface water runoff to wastewater treatment plants (WWTPs). Heavy, intense or prolonged rainfall can overload these combined sewers, which can overwhelm downstream treatment facilities. A combined sewer overflow, or CSO is designed to act as a kind of safety valve for the WWTP that diverts excess wet weather flow, enabling the plant to continue operating and preventing upstream flooding.

Our CSO screening and treatment technologies catch gross solids and floatables during these excess flow events, protecting the environment from damaging overflow pollution. 

Use real-world, real-time data to make better response, planning and asset management decisions.

Built and natural water environments are large and complex systems, and it can be difficult to model and forecast supply, demand and flood risk. In many cases people rely on outdated, incomplete or unrepresentative climate and hydrometric data to make critical and urgent decisions, or—worse—make decisions without the benefit of data at all.

Our data loggers, telemetry, databases and analysis systems provide real-time, real-world insight into environmental, network and system conditions, improving incident response, planning and asset management activities.

What's new at Hydro International?

  • Future-proof design incorporated as standard for our most popular Hydro-Brake Optimum vortex flow controls

    We are redefining the standard for hydraulic efficiency and adjustability with an upgrade to our most popular and highest performing flow…

  • NEW! Hydro GritCleanse How it Works Animation

    Learn how Hydro GritCleanse™ produces such clean and dry grit.The Hydro GritCleanse™ is a fluidized bed grit washing system optimized to…

  • We answer your common questions on our Stormbloc Optimum range

    In this blog our Technical Team Manager, Chui Green answers some common questions about the extended Stormbloc® Optimum range. Earlier…

  • We have been acquired by Oldcastle Infrastructure

    Hydro International is now part of the world’s leading provider of building materials solutions that build, connect and improve our world. …

  • Chemical dosing delivers exceptional TSS removal for industrial customers

    During a recent Hydro MicroScreen™ installation in the UK we collaborated with the customer to test chemical dosing of the system. The…

  • Hydro International expands Stormbloc® Optimum range

    Hydro International, the market leader in water management products and services, unveils its expanded UK Stormbloc® Optimum range,…

  • Hydro International secures space for growth with new office move

    Hydro International is securing its future growth opportunities as it relocates its head office to Kenn Business Park in Clevedon, near…

  • Hydro International’s UK Wastewater Services apprenticeship scheme crafts the next generation of inlet works experts

    Hydro International’s industry-leading UK Wastewater Services team, M&N, is working to provide best-in-class engineers through its…

  • Ground-breaking research project advances wastewater grit removal technology

    Our two-year research project with the University of Exeter has optimised our stacked tray design, and opens up new performance upgrade…

  • Hydro International welcomes three new apprentices

    Hydro International’s UK Wastewater Services Team, M&N, is pleased to announce the appointment of two new engineering apprentices to…

  • New DAF and drum screen capability for industrial customers

    We are now offering DAF and drum screen technology for industrial customers in the UK and Ireland. We are pleased to announce that we…

  • Hydro International wins five-year contract with Anglian Water

    Hydro International is pleased to announce the award of Anglian Water’s Framework to maintain Inlet Screens and Screenings handling…

  • Hydro International’s Stormbloc® Optimum provides vital stormwater management around the UK.

    With an additional 1.2 million Great British properties being placed at risk of flooding by 2050*, the need for better stormwater…

  • Celebrating 40 years of Hydro International

    We're celebrating our 40th anniversary! 2020 marked Hydro International's 40th year of doing business.  Four decades after he…

  • New Hydro-Logic® Flexi Logger 105 provides engineers with an improved interface and new connectivity options

    We have launched a new monitoring and telemetry logger to help engineers to monitor and collect more data for water flow, level, quality…

  • Up-Flo Filter's Growing Regulatory Approvals

    Up-Flo® Filter continues to be accepted by more regulatory agencies across North America than any other stormwater filter and most…

  • Hydro International Flow Control and Treatment Products now have 3D models for use with UK Building Information Modelling (BIM)

    Drainage design engineers can now get 3D models of Hydro International products for use with Building Information Modelling (BIM). …

  • New Stormbloc Optimum Inspect Block

    The new Stormbloc® Optimum Inspect block delivers a new way for UK engineers to meet Ofwat design guidance. We're introducing a new…

  • NJDEP Certifies Up-Flo Filter Extended Maintenance Cartridge at Highest Flows in the Country

    NJDEP Certifies Up-Flo® Filter Extended Maintenance Cartridge with a performance rating that guarantees the smallest possible…

  • Hydro International appoints Paul Cleaver as Chief Executive

    We're pleased to announce that Paul Cleaver has been appointed to the role of Chief Executive. Chairman Derek Sach: Paul brings a…

  • Up-Flo Filter ISO 14034 Verified to Satisfy ETV Canada Requirements

    Up-Flo® Filter is now ISO 14034 verified to remove sediment, nutrients and metals from stormwater runoff. This is in compliance with…

  • Hydro International acquires M&N Electrical and Mechanical Services Ltd

    We are now the UK’s leading provider of solutions for the wastewater treatment plant headworks. On the 22nd of July we acquired M…

  • Hydro International's consultancy team wins natural flood management projects

    Our consulting team has won three catchment-scale natural flood management projects with UK councils. The Hydro International consulting…

  • Up-Flo® Filter TAPE Certified for GULD

    Up-Flo® Filter has been certified by the Washington State TAPE to remove TSS and phosphorus. Performance monitoring of Up-Flo®…

  • New Trade Effluent Savings Calculator Launched

    We have launched a new trade effluent calculator to help UK industrial businesses find out what they could be saving in trade effluent…

  • HeadCell Headworks Upgrade Wins 2018 DBIA Top Project Award

    An Atlanta HeadCell® project wins a prestigious design award. Each year the Design Build Institute of America (DBIA) selects the best…

  • First Defense OGS Verified by ISO 14034 Standard

    First Defense® is the first stormwater separator to be verified through new ISO 14034 standard in Canada. The First Defense® oil…

  • Hydro MicroScreen wins top industrial project award

    Hydro MicroScreen™ has been selected as a Top Project for 2018 by Industrial Water & Wastes Digest. The Hydro MicroScreen™ was…

  • Hydro International offers industry-leading water resources modelling software

    We've acquired Oxford Scientific Software, developers of the Aquator water resources modelling software. On the 10th of October we…

  • Hydro BMPs Selected for Dozens of Top Vehicle Dealerships

    Engineers have specified our stormwater separators and filters to treat stormwater runoff leaving dozens of the top vehicle dealerships…

  • Much Wenlock flood protection project wins sustainability award

    The Much Wenlock Flood Alleviation Scheme in Shropshire, UK, has won the 2018 Sustainability award at Flood & Coast's annual…

  • Optimum stormwater storage now available in the UK and Ireland

    The new Stormbloc® Optimum geocellular attenuation system provides SuDS storage and infiltration even in the most challenging of urban…

  • China's first Grit King commissioned

    China's first ever advanced grit management system has been successfully commissioned. Our team has successfully commissioned China's…

  • Smart monitoring helps return salmon to the River Garry after 60 years

    Data from the Hydro-Logic® Services team helped SEPA, SSE and the Tay District Salmon Fishery Board to rejuvenate the River Garry. The…

  • New Guidance on the Construction of SuDS Now Available

    CIRIA, the Construction Industry Research Information and Association, has released new guidance to support successful SuDS…

  • New joint venture with Thunip to deliver better water management to China

    We have entered into a joint venture with Thunip Corporation Ltd., creating a Chinese company that will deliver our products locally within…

  • Downstream Defender Selected for NY Wheel Project

    Downstream Defender® will provide stormwater treatment for Staten Island's New York Wheel.A 6-ft Downstream Defender® stormwater treatment…

  • Smart monitoring to track flood levels in Shropshire

    Hydro International smart monitoring technology will provide insight into water levels at the Much Wenlock flood alleviation project.Our…

  • Hydro-Brake Optimum Design Now Supported in Causeway's Flow Software

    Hydro International’s Hydro-Brake® Optimum flow control is now fully supported within Causeway’s state-of-the-art Flow drainage design…

  • Proprietary solutions could help the UK's damaged floodplains

    Chris Newton responds to findings that 90% of the UK's floodplains have been changed so much that they no longer work properly - and…

  • Hydro-Logic Smart Monitoring launched to help water industry to plan, act and react

    We have launched a new range of Smart Monitoring products and services to help businesses and public organisations to understand their…

  • Stormwater BMP Installations at Fitness Centers Across North Amercia

    Happy New Year!Did you start 2017 with a resolution to make health and fitness a priority this year? Millions of North Americans began…

  • Holiday Shoppers Contribute to Mall & Plaza Stormwater Pollution

    If you’ve still got last-minute holiday shopping to do, there’s a good chance you’ll be driving by or stopping into malls, plazas or stores…

  • Storm Angus no match for Telford flow controls

    Despite heavy rain in the wake of Storm Angus, Hydro-Brake® Optimum flow controls continue to protect Telford homes. On the 21st of…

  • Smart monitoring demonstrates effective flow control

    New “smart monitoring” hydrometric data shows how Hydro-Brake® Optimum controls the flow and prevents flooding exactly as designed. In…

  • North America regional grit gradation data now available

    North American regional grit gradation data is now available to help wastewater engineers, owners and operators to design and optimise WWTP…

  • Hydro-Brake® Drop testing extends design range and confirms odour reduction

    Testing the Hydro-Brake® Drop at Bo'ness wastewater treatment works has allowed us to expand the design range and demonstrate its…

  • National Flood Resilience Review Published

    The UK Government’s review of National Flood Resilience commits to providing vulnerable communities with more temporary defences, a new…

  • Hydro International supports water quality improvements at Anglian Water

    We're helping Anglian Water to protect and improve water quality at Watton Water Recycling Centre. Anglian Water’s £3 million investment to…

  • Hydro-Brake Optimum online design tool expanded

    Our online design software has been expanded to make it easier than ever for engineers to optimise designs and achieve the best possible…

  • Garbage in, garbage out?

    Keith Hutchings argues that improving sludge quality could improve overall wastewater treatment plant efficiency. There has been a lot of…

  • Flow controls deliver sustainable drainage for challenging Llanelli housing development

    Engineers took a pragmatic approach to designing surface water drainage at Taylor Wimpey’s new Parc-y-Strade housing development on the…

  • Hydro International's 'Knockout' Fundraising Overflows for WaterAid

    Battling against suds and floods took on a whole new meaning for the charity challengers in Hydro International’s annual “thrills and…

  • Hydro International adds a final polish to Muntons’ environmental credentials

    A DynaSand® filter helps Muntons to treat beverage production process water and discharge environmentally compliant wastewater.Hydro…

  • Hydro International improves flood safety in Devon and flood warning in Nottingham

    New automatic flood warning signs in Devon and a new surface water flooding system in Nottingham improve UK flood safety, monitoring and…

  • Hydro International supports ground-breaking CSO trial in eastern China

    A ground-breaking Combined Sewer Overflow (CSO) trial is underway in eastern China to encourage water innovation and improve urban inland…

  • Hydro International acquires Hydro-Logic Ltd

    Hydro International acquires Hydro-Logic, adding hydrometric monitoring products and services to its water management portfolio. Hydro…

  • Hydro International expands industrial and municipal water treatment options with new MicroScreen technology

    Hydro International has acquired the assets of M2 Renewables Inc., expanding its range of water treatment technologies to incorporate the…

  • Enhanced sizing tools for Ontario engineers

    We have released our newest sizing calculator for the First Defense® High Capacity and the Downstream Defender® vortex stormwater…

  • Hydro International named in "Best Places To Work In Maine" list

    Hydro International has been named in this year’s list of “Best Places To Work In Maine” for the second time in the past three years. …

  • Radical change of approach to grit removal arrives in UK

    A radical change of approach to grit removal in wastewater treatment plants, being introduced to the UK for the first time, could be…

  • Hydro International wins Top Project honours from W&WD for army base project

    Hydro International has been awarded Top Project honours from Water & Waste Digest for the grit removal system installed as part of the…

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