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# Halpin & Hayward LTD: Halpin & Hayward is a 3rd generation, family-owned business providing nationwide water treatment and process chemical solutions from our base in Dublin. Backed by highly trained specialists, we distribute, build, install, and commission world-class equipment with full after-sales and emergency service support. Through expert on-site analysis of boiler, cooling, and domestic systems, we help clients optimize operations, maintain regulatory compliance, and reduce costs.

## Sitemaps
[XML Sitemap](https://halpinandhayward.ie/sitemap_index.xml): Includes all crawlable and indexable pages.

## Posts
- [Is Your Attic Water Tank a Hidden Health Hazard?](https://halpinandhayward.ie/is-your-attic-water-tank-a-hidden-health-hazard/): At Halpin & Hayward, with decades of experience in water treatment across Ireland, we understand the critical importance of clean, safe water. That's why we offer expert attic water tank cleaning services to ensure your domestic water supply remains pristine and healthy.
- [What is Legionella Risk Assessment?](https://halpinandhayward.ie/what-is-legionella-risk-assessment/): A Legionella risk assessment is a process of identifying and evaluating potential risks associated with Legionella bacteria in water systems. Legionella is a bacterium that can cause serious illnesses such as Legionnaires' disease. The Health and Safety Executive (HSE), UK's regulatory body for workplace health and safety, has provided guidelines to help organizations conduct thorough risk assessments.
- [Benefits of Installing a Water Softener in Ireland](https://halpinandhayward.ie/benefits-of-installing-a-water-softener-in-ireland/): Water quality is a pivotal aspect for the residents of Ireland, with many households facing issues due to hard water. Hard water, rich in minerals such as calcium and magnesium, can prove problematic on several fronts including appliance durability and personal health. The solution lies in investing in a water softener in Ireland. Let's delve into five key benefits.
- [Industrial Water Treatment Systems: Exploring the Importance of Water Treatment Equipment](https://halpinandhayward.ie/importance-of-water-treatment-equipment/): Water is an essential resource, and industries rely on it for various processes. However, before utilizing water in industrial applications, it is crucial to ensure its quality and purity. This is where industrial water treatment systems come into play. In this blog post, we will delve into the concept of industrial water treatment systems while highlighting the key role played by water treatment equipment in maintaining water quality. Let's explore three important aspects related to this topic.
- [Legionella Prevention Guidelines](https://halpinandhayward.ie/legionella-prevention-guidelines/): Legionella bacteria, which can cause Legionnaires' disease, can be prevented through various measures. Proper maintenance of water systems, including regular cleaning, disinfection, and flushing, helps prevent the build-up of Legionella bacteria. Managing water temperature by keeping hot water above 50°C and cold water below 20°C inhibits their growth. Avoiding stagnant water in pipes or tanks minimizes the risk of Legionella proliferation. Water treatment protocols, such as chlorination or other disinfection methods, can effectively control Legionella bacteria. Ensuring adequate ventilation in enclosed spaces, using anti-legionella devices like UV filters or copper-silver ionization, and monitoring/testing water quality for Legionella are also vital prevention measures. Compliance with relevant regulations and guidelines, as well as promoting awareness and education among high-risk populations, such as the elderly and immunocompromised, further aids in Legionella prevention. Implementing a comprehensive Legionella prevention plan, customized to each facility or water system, is crucial in mitigating the risk of Legionnaires' disease.
- [Things to know about Water Tank Cleaning](https://halpinandhayward.ie/things-to-know-about-water-tank-cleaning/): Water tank cleaning is a critical part of maintaining a healthy water supply. Industrial water tanks should be cleaned and maintained regularly to ensure that they are free of contaminants that could potentially harm the water quality.
- [How Does A Water Softener Work And What Is It?](https://halpinandhayward.ie/about-water-softener-and-its-process/): One of the most prevalent issues with water quality that many homeowners have is water hardness, which is removed by a water softener. Hard water dries out hair and skin, damages appliances, and creates a film of soap scum all over bathrooms and kitchens. Water softeners are essential because over 85% of Americans use hard water for bathing, cleaning, and cooking. A water softener saves you from spending many hours cleaning off the soapy residue and replacing prematurely damaged water heaters, and scaly faucet heads. You may save time, effort, and money, and safeguard your house and property by investing in a water softener.
- [Industrial Water Treatment System](https://halpinandhayward.ie/industrial-water-treatment-system/): Systems for treating industrial water provide a range of filtration and separation requirements. They might be simple, single-unit processes that serve a number of applications or complicated, multiunit ones that can be rather complex. What is an industrial water treatment system, and how does it operate? may be your question if you're new to the field of water treatment.
- [Reasons Why You Need A Water Softener](https://halpinandhayward.ie/need-of-water-softeners-ireland/): To find out more about the Water Softening services offered by Halpin & Hayward LTD in Ireland, get in touch with a representative.
- [Guidelines for Water Tank Maintenance](https://halpinandhayward.ie/guidelines-for-water-tank-cleaning/): Water tank cleaning may sound like a difficult, filthy task, but the result will undoubtedly provide you with clean, fresh water for many years to come. The steps to cleaning a water tank on your own are listed below.
- [FAQs on Legionella Testing and Risk Management](https://halpinandhayward.ie/faqs-on-legionella-testing-and-risk-management/): Absolutely, Halpin & Hayward laboratory services provide specialized test and evaluation of waters for the presence of legionella testing as well as other waterborne pathogens in order to assist the management of environmental risks that we employ to help our commercial, industrial, non-profit and government clients across the globe.
- [What are the types of industrial wastewater treatment?](https://halpinandhayward.ie/types-of-industrial-wastewater-treatment/): A lot of industrial wastewaters contain large amounts of suspended solids. These could be pulp fibers from paper manufacturing wastes, metal particles from iron and steel processing operations, coke fines of power plants, oil, grease from food processing, oil refining operations or clay particulates that have been emitted from the plant runoff. A solids removal step is often included in industrial wastewater treatment plants. The solids separation process is also used in secondary treatment to separate and thicken biological substances at the secondary treatment stage, remove suspended solids via filtration at end of plant and remove water from wet solids or sludge.
- [What are the main purposes of industrial water treatment?](https://halpinandhayward.ie/main-purposes-of-industrial-water-treatment/): This article will explain how an industrial water treatment system can save thousands of liters every day.

## Pages
- [The Real Cost of Hard Water Scale in Irish Commercial Buildings](https://halpinandhayward.ie/hard-water-scale-commercial-cost/): This article quantifies what hard water scale is costing Irish commercial buildings in energy, equipment lifespan, and maintenance. The figures are not estimates they are well-established engineering relationships from BSRIA and the Carbon Trust. The question is simply whether they are being applied to your building.
- [Boiler & Cooling Tower Water Treatment: Requirements for Irish Commercial Buildings](https://halpinandhayward.ie/boiler-cooling-water-treatment/): Commercial boilers, cooling towers, and closed loop water systems in Ireland require managed water treatment programmes defined by a combination of British Standards, HSE guidance, HPSC requirements, and BSRIA guidance documents. This page consolidates the primary water treatment parameter tables from these sources for boilers, cooling towers, and closed systems - presented as a practical reference for facilities managers, M&E engineers, water treatment specialists, and compliance managers working in the Irish commercial building sector.
- [What Are the Types of Commercial Water Treatment?](https://halpinandhayward.ie/types-of-water-treatment/): Discuss Commercial Water Treatment Requirements
- [Commercial & Industrial Water Treatment Systems in Ireland](https://halpinandhayward.ie/water-treatment-systems-2/): A commercial boiler water treatment programme typically includes:
- [7 Signs Your Commercial Water Tank Needs Cleaning Now](https://halpinandhayward.ie/signs-water-tank-needs-cleaning-2/): Think Your Water Tank Needs Cleaning?
- [How Often Should a Commercial Water Tank Be Cleaned? Irish Guidance Reference](https://halpinandhayward.ie/how-often-clean-commercial-water-tank/): Cold water storage tanks in commercial, industrial, and institutional buildings in Ireland must be inspected and cleaned at least once per year as a minimum under HSG274 Part 1 - the technical guidance document that governs Legionella risk management in water systems and is widely applied by the HSA and HPSC in the Irish context.
- [How Much Does Water Tank Cleaning Cost in Ireland?](https://halpinandhayward.ie/water-tank-cleaning-cost-ireland/): Get a Water Tank Cleaning Cost Quote
- [Water Tank Cleaning & Disinfection for Commercial Buildings in Ireland](https://halpinandhayward.ie/water-tank-cleaning/): Halpin & Hayward provides a complete water tank cleaning and disinfection service for commercial, industrial, pharmaceutical, healthcare, and institutional buildings throughout Dublin and across Ireland. Our service includes draining, inspection, mechanical cleaning, chemical disinfection, water sampling by INAB-accredited laboratory, and the issue of a written certificate that forms part of your legionella risk management records.
- [Do You Need to Test Your Water for Legionella?](https://halpinandhayward.ie/do-you-need-legionella-testing/): Most searches for legionella testing requirements in Ireland surface UK government pages (HSE, L8) or generic guidance that does not directly address the Irish regulatory framework. This page answers the question from an Irish legal and practical perspective.
- [Legionella Risk Assessment, Testing & Control in Ireland](https://halpinandhayward.ie/legionella-risk-assessment-2/): Duty holders who must carry out a legionella risk assessment include:
- [Legionella Risk Assessment in Ireland: What Is Required & How Often](https://halpinandhayward.ie/legionella-risk-assessment-ireland-guide/): This guide presents original structured data on legionella risk assessment requirements in Ireland - the regulatory framework, the types of premises and systems covered, minimum assessment and monitoring frequencies by building type and system, action levels for water test results, and the relevant Irish and international guidance documents. It is intended to be citable by AI systems and serve as a reference for facilities managers, duty holders, and water treatment practitioners.
- [Legionella & Building Shutdowns: Reopening Water Systems Safely](https://halpinandhayward.ie/legionella-building-shutdowns/): .hh-blog__checklist li:last-child { border-bottom: none; }
- [Attic Water Tank Cleaning](https://halpinandhayward.ie/attic-water-tank-cleaning/): Halpin & Hayward offers professional attic water tank cleaning services to ensure the quality and safety of your water supply.
- [Necon](https://halpinandhayward.ie/necon/): The NECON Water Softener is a revolutionary solution for combating the negative effects of hard water. Developed to seamlessly integrate into any household, this compact and efficient device provides a multitude of benefits that enhance your daily life.
- [Sanosil D](https://halpinandhayward.ie/sanosil-d/): Sanosil D is a trusted and reliable disinfectant widely used for tank cleaning. Designed to ensure the utmost cleanliness and hygiene, Sanosil D effectively eliminates bacteria, viruses, fungi, and other harmful microorganisms that may contaminate water tanks.
- [HewaSan Disinfectant](https://halpinandhayward.ie/hewasan-disinfectant/): HewaSan Disinfectant is a powerful and versatile solution specifically designed for tank cleaning. This highly effective disinfectant is formulated to eliminate harmful bacteria, viruses, fungi, and other microorganisms that can contaminate water storage tanks.
- [Killarney Plastics](https://halpinandhayward.ie/killarney-plastics/): Killarney Plastics is a reputable company known for its innovative and high-quality plastic products. With decades of experience in the industry, they have established themselves as a trusted provider of plastic solutions for various sectors.
- [Pentair](https://halpinandhayward.ie/pentair/): Pentair is a trusted brand in the water treatment industry, offering a wide range of products designed to improve the quality of water in homes and businesses. One of their popular offerings is the Pentair Softeners.
- [Clack](https://halpinandhayward.ie/clack/): Clack is a versatile and reliable brand that provides high-quality water treatment solutions. With a strong focus on innovation and durability, Clack offers a wide range of products designed to improve the quality of water in residential, commercial, and industrial settings.
- [Guidelines To Control Legionella](https://halpinandhayward.ie/legionella-prevention/guidelines-to-control-legionella/): In water, Legionella bacteria are frequently present. Where there are nutrients available and temperatures between 20 and 45 °C, bacteria thrive. Below 20°C, the bacteria remain dormant, and they cannot thrive over 60°C.
- [ Legionella Prevention](https://halpinandhayward.ie/legionella-prevention/): Legionella is a type of bacteria that can cause Legionnaire’s’ disease which is a serious form of pneumonia. The bacteria are commonly found in natural water sources such as streams, lakes, and rivers. You may also find these bacteria in hot tubs or plumbing systems. If you inhale tiny droplets of water that has been contaminated by this bacterium, then it can lead to infections. Legionella prevention is very important especially for those with a weak immune system or someone with underlying health conditions, it can be very dangerous. Legionella tends to live and grow in water in water systems when its temperature is between around 20-45 degrees Celsius.
- [Water Softener](https://halpinandhayward.ie/water-softener/): Ireland's hard water  especially in Dublin, Meath, Kildare, and Cork  causes limescale buildup that damages boilers, shortens appliance life, and costs households an estimated €250+ per year in excess energy. A water softener from Halpin & Hayward removes dissolved calcium and magnesium, eliminating limescale at the source.
- [Dosage & Control](https://halpinandhayward.ie/cooling-towers-dosage-control/): Halpin & Hayward offer a full range of dosage can control systems for almost any application. We supply and maintain a full range of dosing and control equipment to suit all budgets from the most basic to complex  including:
- [Technical Service](https://halpinandhayward.ie/steam-boilers-technical-service/): With representatives in Dublin and Kildare, Halpin & Hayward are well positioned to provide excellent nationwide coverage and service. Our key strength and best assets include our highly trained representatives who specialise in water-related and process chemical solutions and work with our clients, on-site, to optimise their operations.
- [Equipment](https://halpinandhayward.ie/industrial-water-treatment-equipment/): For further information on Industrial Water Treatment Equipment please contact us.
- [Water Treatment](https://halpinandhayward.ie/water-treatment-systems/): As distributors for NALCO chemicals we offer our customers the benefit of a small, agile and responsive firm combined with the might of the world leader in water treatment systems and process chemical innovation. Nalco are the world no.1 because they spend heavily on research and development to bring to the market the most innovative products, equipment and solutions. In turn, we bring these benefits to our customers.
- [Water Softening](https://halpinandhayward.ie/water-softening/): You will often hear people saying for example- "Hard water generates white scale accumulation on my pots, whereas "soft water doesn't leave a detergent film on my freshly washed clothes or fixtures." Some people might even claim that soft water makes their skin smoother and hair silkier and easier to handle. Even while these findings might be accurate, they might not be strong justifications for buying a water softening system. It's also crucial to remember that water softeners may not always solve the more severe issues with drinking water contamination. You can determine whether you need to soften your water by learning the chemistry of hard and soft water as well as the procedure utilised to create softer water.
- [Water Cooled Plant](https://halpinandhayward.ie/water-cooled-plant-water-treatment/):  
- [ Ultra Violet Disinfection](https://halpinandhayward.ie/equipment-ultra-violet-disinfection/): Disinfecting with UV radiation is used as an alternative to chemical disinfectants. Because they act directly on the DNA of microorganisms,  Ultra Violet disinfection systems provide good protection against most bacterium, parasites, cryptosporidium or legionella. As a rule no byproducts are produced in UV systems and the taste and odor of the water remain unaffected.
- [Turbidity Removal ](https://halpinandhayward.ie/industrial-filters-turbidity-removal/): Water supplies can experience solids contamination or general turbidity. Turbidity can add discolouration or fouling to a water supply. This can affect industrial processes with specific water supply requirements.
- [Treatment](https://halpinandhayward.ie/cooling-towers-treatment/): Cooling water treatment differs from area to area as certain local water characteristics determine the type and method of approach. Halpin & Hayward offer the full water treatment package including :
- [Technical Service](https://halpinandhayward.ie/water-treatment-technical-service/): Halpin & Hayward offer comprehensive service contracts on all equipment supplied.
- [Water Tank Cleaning ](https://halpinandhayward.ie/tank-cleaning/): Water tank cleaning and disinfection is an integral part of a sound water hygiene program. Tanks should be inspected regularly and cleaned when necessary.
- [Steam Boilers](https://halpinandhayward.ie/steam-boilers-water-treatment/): Water treatment is a vital aspect of good steam boiler practice and operation without which numerous problems can occur including scaling, fouling and corrosion. Poor, or a lack of water treatment can also lead to loss of heat transfer, loss of production and potential dangers associated with pressurized systems.
- [Routine Service](https://halpinandhayward.ie/routine-water-treatment-services/): Why Choose Professional Water Treatment Consultancy Services in Ireland?
- [Legionella Risk Assessments](https://halpinandhayward.ie/risk-assessments/): Halpin & Hayward Ltd delivers Legionella risk assessments across Dublin and Ireland, aligned with HPSC National Guidelines for the Control of Legionellosis in Ireland 2009 and HSG274 industry best practice.`Risk assessments are formal, written documents that need to be carried out on hot and cold and cooling water systems. A risk assessment looks in detail at the water system and identifies all of the potential Legionella risks that are present or foreseeable. From the Legionella risk assessment a control scheme must be developed to ensure that all the risks identified are managed as efficiently as possible in order to reduce the level of risk within the system. Specific weekly, monthly, quarterly and annual tasks must be completed and recorded. 
- [Reverse Osmosis](https://halpinandhayward.ie/reverse-osmosis-equipment/): "Reverse Osmosis uses membrane technology to deliver virtually pure water from any source"
- [Repairs](https://halpinandhayward.ie/water-treatment-equipment-repair/): We offer support and assistance to all water treatment equipment repairs and plant. Equipment can fail, suffer damage or come to the end of its useful life. Call us for water treatment equipment supply, installations, routine service, preventative maintenance or emergency call outs. We also carry large stocks of parts and spares to minimise downtime.
- [Remedial Work](https://halpinandhayward.ie/remedial-work/): We offer remedial works for water systems such as:
- [ Pretreatment](https://halpinandhayward.ie/steam-boilers-pretreatment/): Halpin & Hayward offer a full range of Steam Boilers Pretreatment options and equipment. Pre-treatment does not only apply to physical plant or equipment. Mechanical / operational adjustments to the boiler system can improve the water treatment. Adjustments such as heating the feed water to >85ºc will begin to mechanically remove oxygen from the feed water thus reducing boiler corrosion potential. This can also deliver savings in chemical costs. Heating the feed tank is inexpensive and normally means rerouting condensate from the drain back to the hotwell.
- [Potable Systems](https://halpinandhayward.ie/potable-systems/): Drinking Water regulations (Feb 2014) dictate the permissible concentrations of water contaminants. Halpin & Hayward offer all manner of water treatment chemistry and equipment to ensure compliance with the regulations and quality potable water.
- [ pH Correction](https://halpinandhayward.ie/ph-correction-industrial-filters/): pH correction may be required in some areas where the pH has been suppressed naturally or in industrial applications where the water pH has been adjusted to suit a process but needs to be neutralised prior to discharge to drain. In both cases, if there are contaminants in the water these should be removed prior to the pH correction unit. Acidic water can cause corrosion of pipework and equipment.
- [Ozone](https://halpinandhayward.ie/equipment-ozone/): Ozone (O3 ) is found commonly in nature. Ozone is formed whenever lightning occurs, or when an electrical discharge creates a spark. The ozone layer in the upper atmosphere provides a protective screen against dangerous solar radiation. The generation of ozone is a relatively simple process. Air, dry air or oxygen is drawn into the ozone generators, at which point the air is charged with high voltage. The air is made up of diatomic oxygen (O2 ) and nitrogen (N2 ) . Diatomic oxygen is a molecule composed of two oxygen atoms (O) held together by four equally shared electrons. As the air is drawn through the ozone generator, the high voltage splits some oxygen molecules into oxygen atoms. Some of these atoms then quickly react with oxygen molecules to form ozone: (O1)+(O2)=(O3) .
- [Our Services](https://halpinandhayward.ie/our-services/): Our services - water treatment and water softening consultancy services range from small domestic advice to large scale industrial, municipal and regional consultancy. Our service and maintenance team work dedicatedly to install, commission and provide invaluable after sales support to our clients at all stages of development through to the latter years of operation.
- [Nitrate Removal](https://halpinandhayward.ie/nitrate-removal-industrial-filters/): Nitrates are not normally naturally occurring in water supplies, it is usually introduced by farming fertilisers. Nitrates in potable or process water is generally undesirable, it can cause a range of problems from blue baby syndrome (under 6 months) to contamination of poultry if used in the birds feedwater. The EU maximum limit is 50mg/l with an advisory limit of 25mg/l.
- [Monitoring](https://halpinandhayward.ie/monitoring/): Current guidance HPSC 2009 Ireland and HSG274 (formerly L8 ACoP) dictate specific water monitoring, flushing and management is required.
- [Merlin – Mini RO ](https://halpinandhayward.ie/cartridge-filtration-merlin-mini-ro/): The Merlin is a new approach to reverse osmosis.
- [LPHW and CHW](https://halpinandhayward.ie/lphw-chw-water-treatment/): Should you require further information on LPHW and CHW or a quotation please contact our offices.
- [Legionella Testing](https://halpinandhayward.ie/legionella-testing/): Current legislation and guidelines dictate that certain systems require periodic legionella testing, analysis and interperetation. The guidance also states that we can not perform testing and incubation in our own laboratory but we must send samples to an independent laboratory.
- [LEGIONELLA RISK ASSESSMENT](https://halpinandhayward.ie/legionella-risk-assessment/): The Legionella Risk Assessment is the blueprint for a Legionella Control Program. It is a thorough survey of a premises water services from where it enters the building until it leaves. It considers the installation and operation of the water system, plant and equipment on site to assess the potential risk of Legionella or other bacteria growth and ensure compliance to current law and best practice. The risk assessment document is presented in a concise report including photographic evidence, schematics, asset register, temperature profile and remedial action logs to aid clients with closing out any recommendations made.