Ultraviolet Light Water Filters
If your home relies on a private well or natural water source, protecting your family from bacteria and microorganisms is essential. Even clear, fresh-looking water can contain harmful pathogens such as E. coli, coliforms, and other bacteria that can cause illness — particularly among children, the elderly, and those with weakened immune systems.
Contamination can occur when surface water enters your well after heavy rain, flooding, or agricultural runoff, or if your well casing or pump system isn’t fully sealed. That’s why more homeowners are turning to UV filtration systems for reliable, chemical-free disinfection.
An ultraviolet light water filter uses advanced UV-C technology to destroy bacteria and viruses instantly — protecting your family’s health while keeping your water completely natural.
Pure water. No chemicals. Just light doing the hard work.
Why Homeowners Choose UV Filtration?
Complete Bacterial Protection
With proper installation, a UV filter neutralises over 99.99% of biological contaminants, giving you full peace of mind.
100% Chemical-Free Treatment
Unlike chlorine-based methods, UV doesn’t add anything to your water or change its taste. It’s safe for everyone — including children, pets, and those with sensitivities.
Low-Maintenance
UV systems are easy to maintain and inexpensive to run. Other than replacing the lamp once a year, they require virtually no upkeep and use very little energy.
Eco-Friendly by Design
No chemicals. No by-products. No waste water. UV disinfection is one of the most environmentally responsible ways to protect your water source.
What Can UV Light Filters Remove?
UV technology is designed to disinfect, not filter particles or chemicals. It targets and eliminates microorganisms such as:
E. coli and Coliform bacteria
Giardia and Cryptosporidium
Salmonella and Cholera bacteria
Streptococcus and Dysentery bacilli
Viruses, including Hepatitis
Algae, fungi, and other waterborne microorganisms
For best results, UV systems are often installed after a sediment or carbon filter, ensuring the water is clear enough for the UV light to penetrate effectively.
How UV Filtration Works?
Step 1
Water enters the UV chamber through your main line.
Step 2
A powerful UV lamp emits light at a wavelength of 254 nanometres — the optimal germicidal range.
Step 3
Microorganisms are neutralised as the UV light damages their DNA, preventing reproduction or infection.
Step 4
4. Clean, disinfected water continues to flow to your home — instantly, continuously, and safely.
Professional Installation & Support Across Ireland
At MyH2O, we provide complete installation and servicing for UV filtration systems across Ireland. Our technicians ensure:
Correct sizing and flow rate for your water supply
Proper placement for optimal disinfection efficiency
Integration with any pre-filtration (if required)
Annual lamp replacement and sleeve cleaning
We only supply high-performance UV systems, ensuring long-term reliability and peace of mind. Once installed, your UV system runs silently and automatically — providing worry-free water protection year-round.
Local Authority Water Grants – Save up to €1,000
If your home is served by a private well, you may be eligible for a Local Authority Grant of up to €1,000 under Ireland’s Rural Water Programme.
This grant covers improvement or remedial works needed to make private water supplies safe — including UV filtration systems, pH correction, and iron or manganese removal.
To qualify:
Your home must be over 7 years old
You must not be connected to a public or group water scheme.
At MyH2O, we’ve helped many Irish homeowners apply successfully. We’ll guide you through the process — from providing a detailed quotation for your UV system to ensuring your installation meets grant criteria.
Why Choose Us
Every well is unique — and so is every water solution we provide. At MyH2O, we don’t just sell filters; we design complete systems tailored to your well’s chemistry and your household’s needs. From testing and installation to long-term servicing, we ensure your water stays clean, clear, and worry-free for years to come.
25 Years of Experience
With years of industry experience, our skilled team brings unparalleled knowledge and creativity to every project.
Bespoke Solutions
We tailor our services to meet your unique water needs using specialized filtration media.
Ongoing Service & Support
From installation to annual servicing, we keep your system performing perfectly year after year.
Frequently Asked Questions
What makes UV disinfection better than chlorine?
Chlorine adds chemicals to your water and can leave an unpleasant taste or odour. UV disinfection uses light — not chemicals — to make your water safe. It destroys bacteria and viruses instantly, without altering the water’s natural balance or leaving residues. It’s also safer for your skin, appliances, and the environment.
Can UV filters remove minerals, metals, or odour?
No. UV systems are designed solely to neutralise microorganisms. If your well water contains iron, manganese, sulphur, or turbidity, a pre-treatment filter is needed. MyH2O can design a combined setup that removes minerals first, then disinfects biologically with UV for complete treatment.
How often should I replace the UV bulb?
Every 12 months on average. Even though the bulb may still appear bright after a year, its germicidal strength fades gradually. Replacing it annually guarantees the system continues to kill microorganisms effectively.
What happens if I don’t replace the bulb on time?
If the UV output drops below a safe level, bacteria may pass through untreated. Keeping to a regular replacement schedule is the best way to ensure full disinfection and avoid contamination risks.
Does the system need to stay on all the time?
Yes. UV units are designed for continuous operation. Turning the lamp off frequently shortens its life and allows bacteria to move through the chamber. It’s best to leave it on permanently — energy use is minimal, similar to a small household bulb.
Is a UV system safe for children and pets?
Completely. The UV light is contained inside a sealed chamber, so there’s no exposure to light or radiation. It doesn’t add anything to the water, making it perfectly safe for drinking, cooking, and bathing.
How long does a UV lamp last?
Most residential systems use a lamp rated for 9,000 hours, or about one year of continuous use. Some premium models have extended-life lamps that can last up to two years, depending on water quality and usage.
Can I install a UV filter myself?
We recommend professional installation. UV systems must be correctly sized, positioned, and sealed to ensure full disinfection. Our certified installers also test water flow rates and light intensity to guarantee effectiveness.
What if my water is cloudy or coloured?
UV light cannot penetrate murky water effectively. If your well water is cloudy, a sediment pre-filter is essential. MyH2O systems are usually paired with a 5-micron sediment filter to keep water crystal-clear for proper UV exposure.
How do I know if the system is working?
Most UV systems include an indicator light or alarm to show when the lamp is active. Some advanced units also display remaining lamp life. If the indicator goes out or turns red, it’s time for a replacement or service check.
Will UV change the taste or smell of my water?
No — UV disinfection doesn’t alter water chemistry. In fact, many homeowners report their water tastes fresher once bacteria are removed.
Can a UV filter treat well water that occasionally fails testing?
Yes. UV filtration is the most effective solution for wells that test positive for E. coli or coliform bacteria. Once installed, it ensures that all water entering your home is disinfected continuously, preventing future contamination.
What happens during annual maintenance?
During MyH2O’s annual service, our technician will:
- Replace the UV lamp and check light output
- Clean or replace the quartz sleeve
- Inspect O-rings and seals
- Verify flow rate and electrical connections
- Confirm the system is delivering full UV dosage
This service keeps your system operating at peak efficiency.
Will this qualify for a Local Authority Grant?
Yes. UV light filters are eligible under the Private Well Grant Scheme. We’ll assist with your application, paperwork, and technical details to help you claim up to €1,000 in support.
Need More Information?
Protect your home and family with a UV Water Filter from MyH2O — Ireland’s trusted name in well water treatment.
Our experts will help you select the right system, handle installation, and provide reliable servicing to keep your water clean and safe year-round.