Safety in water reuse: Salher compact UV systems for greywater and treated water

Dec 11, 2025

Ultraviolet (UV) disinfection eliminates bacteria, viruses, and other microorganisms through radiation, without adding chemicals or generating harmful residues or by-products. Salher promotes these advanced UV systems for water treatment to ensure safe reuse of greywater and treated wastewater.

When reusing greywater or treated water for toilet flushing or irrigation of green areas, Salher relies on its UV disinfection systems because they are fast, highly effective, and low-maintenance processes that do not alter the water’s properties (pH, taste, odor). This makes them ideal for non-potable reuse applications where preserving water quality is essential.

Salher solutions for all types of water, uses and needs

Compared to traditional methods such as chlorination, UV treatment offers a cleaner, more sustainable, and environmentally friendly option. It eliminates the need to handle chemicals, store disinfectants, or manage toxic waste.

One example is Salher’s GRISAL-AUT unit, a compact greywater and treated wastewater reuse plant designed for non-potable applications. The system integrates a UV lamp to ensure safer and more reliable disinfection.

In addition, Salher’s UV disinfection system is specifically engineered to eliminate bacteria and viruses present in water. Its UV-C lamp (λ ≈ 254 nm) acts at the molecular level on the DNA/RNA of microorganisms, preventing them from reproducing and ensuring microbiological safety.

This type of solution provides optimal water quality for residential buildings, hotels, communities, and facilities seeking to reuse greywater for toilet flushing or irrigation. It is also ideal for projects aiming to reduce potable water consumption, decrease operating costs, minimize environmental impact, or avoid chemicals to maintain a more natural and safe water quality.

With a strong track record in water treatment solutions, Salher combines high-quality engineering, proven technology, and environmental commitment. The GRISAL-AUT and SAL-UV product ranges represent the company’s dedication to delivering safe, reliable, and efficient reused water, through practical, turnkey solutions tailored to any need.

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