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.

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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?

  • 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…

  • Hydro International expands Stormbloc® Optimum range

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

  • 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…

  • 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…

  • 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…

  • 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…

  • 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…

  • California Water Board Approves Full Trash Capture BMPs

    California Water Board has approved Hydro International systems as Full Trash Capture BMPs.  The California Water Board has…

  • 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…

  • 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…

  • City of Indianapolis Approves First Defense® High Capacity

    The City of Indianapolis has approved the First Defense® High Capacity stormwater separator with the highest stormwater treatment loading…

  • 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…

  • Virginia DOT Approves use of Hydro International Separators and Filter

    Virginia DOT approves Hydro International stormwater treatment systems. The Virginia Department of Transportation (VDOT) recently…

  • 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…

  • 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…

  • 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…

  • 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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