UV-C lamps (254 nm) destroy the DNA of microorganisms in a fraction of a second — without chlorine and without affecting the taste or smell of the water. A safe, certified method for homes, restaurants, hotels and the food industry.
A UV-C lamp emits radiation with a wavelength of 254 nm. Water flows through a reactor with a quartz glass sleeve — the radiation penetrates the cells of microorganisms, permanently damaging their DNA and RNA. Bacteria, viruses and protozoa lose the ability to reproduce and die within seconds.
Unlike chlorination, the UV method introduces no chemical substances into the water, does not change its taste or smell, and creates no harmful by-products (trihalomethanes).
Protection for domestic well water against coliform bacteria and E. coli. Fitted to the pipework after the pressure set — a simple installation with no chemicals to manage.
A HACCP and Sanepid requirement in catering premises. UV on the cold drinking water and hot water lines — full documentation for the sanitary inspectorate.
A critical environment — patients with weakened immunity. UV as an additional microbiological barrier, especially where there is a risk of Legionella and Pseudomonas.
Process water for washing, rinsing and production. BRC, IFS and ISO 22000 certification requirements — UV meets the standards without affecting the products.
Support for chlorination — less chemical use and no chloramines. Effective against Cryptosporidium and Giardia, which resist chlorine.
The final treatment stage at municipal and industrial plants. Capacity from 0.5 m³/h (a private house) to 6,000 m³/h (a municipal water utility).
UV eliminates microbiological contamination — bacteria, viruses and protozoa (including Cryptosporidium and Giardia). It does not, however, remove chemical contaminants, heavy metals, nitrates or hardness. Where water has a high iron, manganese or hardness content, it is worth combining UV with filtration or a softener.
Standard lamps are replaced every 12 months (around 8,760 operating hours). Amalgam lamps last up to 16,000 hours — replacement every 18–24 months. A UV sensor in the reactor monitors current performance and tells you when a replacement is due.
Yes — UV-C radiation at a dose of ≥40 mJ/cm² effectively inactivates Legionella pneumophila. UV is often used to supplement thermal or ClO₂ disinfection, particularly in systems prone to biofilm. Contact us if you suspect Legionella is present — a combination of methods may be needed.
The choice of lamp depends on the pump output (m³/h) and the water quality (turbidity, iron content). The water must be clear — turbidity ≤1 NTU and iron ≤0.3 mg/l for UV to work effectively. For a typical domestic well (output 1–2 m³/h) a 25–55 W reactor is sufficient. We recommend testing the water before installation.
No — that is the main advantage of UV over chlorination. UV radiation introduces no substances into the water and creates no by-products. The taste and smell of the water are unchanged.
For private domestic installations no notification to Sanepid is required. For public buildings (hotels, restaurants, hospitals) a UV lamp forms part of the water quality assurance documentation — MICHLOR prepares the full technical documentation.
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