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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 and Control](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.
- [Why is Water Tank Cleaning Important?](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.
- [Learn How Does A Water Softener Work And What Is It in Ireland ?](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.
- [Best Industrial Water Treatment System in ireland](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
- [Attic water tank cleaning in Irish homes](https://halpinandhayward.ie/attic-water-tank-cleaning-in-irish-homes/): Arrange Attic Water Tank Cleaning
- [Cold water storage tank cleaning: process and frequency](https://halpinandhayward.ie/cold-water-storage-tank-cleaning/): Cleaning a cold water storage tank involves draining it, removing sediment and debris, cleaning the internal surfaces, disinfecting (typically by chlorination), then rinsing and refilling, with the water tested before the tank is returned to use. Frequency is risk-based rather than fixed: tanks should be inspected regularly (commonly annually) and cleaned when the inspection shows it is needed sediment, biofilm, debris or contamination and cleaning also follows any works or a water quality problem. In Ireland, this sits within the wider duty to manage water hygiene and legionella risk based on a written risk assessment, so the schedule is set by the risk assessment for the building.
- [Tank chlorination and certification for commercial premises](https://halpinandhayward.ie/tank-chlorination-and-certification/): Chlorination (disinfection) treats a water tank and system with a controlled dose of chlorine at a set concentration and contact time to kill microorganisms, after which the system is flushed and tested before use. Commercial premises need it after cleaning a tank, after works on the water system, following a contamination or water quality problem, when commissioning a new or altered system, or when a legionella risk assessment calls for it. The work is recorded with a disinfection certificate confirming what was disinfected, the method, the concentrations and the results. It sits within, not instead of, ongoing water hygiene management.
- [When does a storage tank need cleaning? Inspection triggers](https://halpinandhayward.ie/when-does-a-storage-tank-need-cleaning/): A storage tank needs cleaning when inspection or monitoring shows a problem, rather than on a fixed calendar date. The triggers are visible sediment or scale build-up, biofilm or slime on the surfaces, debris or foreign material in the tank, signs of pest ingress, water discolouration or quality issues, and water temperatures that fall outside safe ranges. A poor or missing lid and failed screening are triggers too, because they let contamination in. This condition-led approach fits Ireland's risk-based duty to manage water hygiene and legionella: the written risk assessment sets how often to inspect, and inspection findings decide when to clean.
- [Boiler water treatment and dosing basics](https://halpinandhayward.ie/boiler-water-treatment-and-dosing-basics/): Boiler water treatment controls the two things that damage boilers: scale and corrosion. Because a boiler continually evaporates water and leaves the dissolved solids behind, hardness quickly forms scale on the hot surfaces, which insulates them, wastes fuel and can cause overheating, while oxygen and other factors drive corrosion. Treatment addresses feedwater quality, doses chemicals to control scale, corrosion and oxygen, manages the boiler water chemistry, and blows down the boiler to control dissolved solids. It is kept right by regular testing.
- [Chlorine dioxide vs chlorination for water systems](https://halpinandhayward.ie/chlorine-dioxide-vs-chlorination/): Water Treatment and Hygiene, Done to Standard
- [Closed system treatment: heating and chilled water circuits](https://halpinandhayward.ie/closed-system-treatment-heating/): The payoff is real: a properly treated and monitored closed system maintains heat transfer efficiency, avoids blocked and seized components, and greatly extends the life of boilers, chillers, pumps and heat exchangers. Neglected system water is one of the commonest hidden causes of premature plant failure. Halpin & Hayward provides closed system treatment, dosing and monitoring for LTHW and CHW circuits across Ireland.
- [Copper-silver ionisation: how it works and where it suits](https://halpinandhayward.ie/copper-silver-ionisation-how-it-works-and-where-it-suits/): .hh-method__breadcrumb a { font-weight: 500; }
- [Cooling Tower vs Chiller Water Treatment](https://halpinandhayward.ie/cooling-tower-vs-chiller-water-treatment-2/): }
- [Cooling Tower Compliance & Inspection Schedule (Ireland)](https://halpinandhayward.ie/cooling-tower-compliance-ireland/): grid-template-columns: repeat(1, 1fr);
- [Cooling Tower Water Treatment Ireland](https://halpinandhayward.ie/cooling-towers-water-treatment/): Services at a Glance
- [Water Hygiene & Compliance Services Ireland](https://halpinandhayward.ie/water-hygiene-compliance-ireland/): }
- [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-ireland/): 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/): 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/): There is no single Irish statute that explicitly states a water tank must be cleaned every 12 months. However, the statutory duty under the Safety, Health and Welfare at Work Act 2005 and the Biological Agents Regulations 2013 to manage Legionella risk in water systems is enforced in practice by reference to HSG274 Part 1, which specifies annual cleaning as the minimum control measure for cold water storage tanks. HSA inspectors use HSG274 as the benchmark for reasonable compliance. In the event of a Legionella incident, the absence of annual tank cleaning records would be a significant aggravating factor.
- [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/): 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/): A legionella risk assessment in Ireland is a systematic survey and evaluation of all water systems in a premises, carried out to identify the risk of Legionella bacteria growing and being dispersed to people who could breathe in contaminated water droplets. The assessment produces a written document recording the systems surveyed, risk levels identified, control measures in place, and the ongoing monitoring programme required. It must be carried out by a competent person and reviewed regularly.
- [Legionella & Building Shutdowns: Reopening Water Systems Safely](https://halpinandhayward.ie/legionella-building-shutdowns/): When a building is shut down - for refurbishment, reduced occupancy, seasonal closure, or any extended period of low use - the water system becomes a Legionella risk. Stagnant water at temperatures between 20°C and 45°C is the ideal environment for Legionella bacteria to multiply. When the building reopens and water flows again, those bacteria can be dispersed through showers, taps, and any system that creates an aerosol.
- [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 Prevention at a Glance
- [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. This process from Halpin & Hayward removes dissolved calcium and magnesium, eliminating limescale at the source.
- [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 softening process 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.
- [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/): A dead leg is a section of pipework that no longer actively carries water  for example, a capped-off pipe or a rarely used outlet. Stagnant water in dead legs creates ideal conditions for Legionella to multiply and is a key finding in risk assessments.
- [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.