Safe, drinkable water at every tap

Yes. Depending on the incoming water quality, the chlorine concentration Sensiblue adds stays well within WHO guidelines for safe drinking water, which keeps your water safe.

No. The S4 produces 0.2-0.45 mg/L free available chlorine, which is just below the taste threshold of 0.5-1.0 mg/L.

When your water is clean, no. However, if your water contains organic material such as biofilm, sweat or dissolved organics, you may notice a chlorine-like smell. This is actually a good sign - it means the system is working. As the chlorine gradually removes existing biofilm from your plumbing, the smell will reduce over time.

No. Sensiblue uses approximately 1 kg of salt per 50,000 litres of water, adding on average just 20 mg/L of NaCl. The WHO guideline for sodium chloride in drinking water is 500 mg/L, so Sensiblue stays well below that threshold.

No. If you notice a salty taste right after installation, trapped air (water hammer) may be pushing salt water out. This is solved by installing a water hammer arrestor - a simple, inexpensive fix described in the manual. Under normal operation, salt is undetectable.

No. Sensiblue is a disinfection device, not a water softener. It does not remove calcium, magnesium or other minerals from your water. If you need water softening, install a separate softener upstream of the Sensiblue.

No. Sensiblue is a disinfection system - it eliminates bacteria and viruses but does not filter out particles, heavy metals or chemical contaminants. If your water source contains sediment or particles, we recommend installing a microfilter (minimum 5 µm) before the Sensiblue. For improved taste, combine with a carbon filter. Sensiblue and filtration complement each other: filtration cleans, Sensiblue protects.

Yes. The free available chlorine produced by the S4 is effective against legionella, bacteria, viruses and biofilm. It also prevents regrowth in your plumbing.

No. Sensiblue produces ultra-low active chlorine between 0.2 and 0.4 mg/L - the same range the WHO recommends for safe drinking water. For comparison, many municipal water supplies and swimming pools operate at significantly higher chlorine levels (1-3 mg/L). At Sensiblue's concentration, there is no noticeable effect on hair, skin or nails.

Yes. Sensiblue produces chlorine at 0.2-0.4 mg/L, which is within WHO drinking water guidelines. This is the same standard applied to municipal tap water worldwide. It is safe for infants, children, pregnant women and animals.

Yes. Sensiblue connects inline to your water supply with a standard 3/4" thread. If you are comfortable connecting a washing machine or dishwasher, you can install Sensiblue. No electrician needed - there is no power connection. Installation typically takes under 30 minutes. For commercial or complex setups, or where local regulation requires it, we recommend a licensed plumber.

At the point of entry - your main water inlet - so one unit protects every tap, shower and appliance. In Indian homes that means the main supply line between the last overhead tank and the point of use. If you have other water treatment devices such as filters or softeners, Sensiblue should always be the last step before the point of use.

No. Always install Sensiblue on the cold water (entry) side, before your water heater. The disinfected water then flows through your heater and protects your entire hot and cold water system, keeping warm water lines clean.

Sensiblue works from as low as 0.4 bar (4 metres of water pressure) and 4 litres per minute. It handles flow rates up to 16 litres per minute, which suits most household and commercial water systems.

Sensiblue S4 comes in two sizes: Medium (1.1 kg salt container) and Large (2.4 kg salt container). Both mount on a wall bracket and need clearance below for salt container replacement. Dimensions are compact enough for under-sink, utility room or basement installation.

Yes - that is what it is built for, and it scales. One unit handles up to two simultaneous showers (1,000 L/hr). Connecting units in parallel increases flow by 1,000 L/hr per unit (for resorts, schools, or hospitals). Connecting units in series increases free chlorine dosing by 0.2 mg/L per unit.

Yes, but if water has been stored for over one week, we strongly recommend running it through Sensiblue again before use. For rainwater or borehole sources, a pre-filter (minimum 5 µm) is recommended before the Sensiblue.

Yes. Sensiblue connects inline to any water supply with 3/4" threading and needs no electricity. It is well suited to mobile applications like boats, RVs and off-grid setups, as long as the minimum water pressure (0.4 bar) is met.

No. Sensiblue contains an internal hydro-powered turbine. Whenever water flows through the device (at rates between 4 to 16 L/min), the turbine automatically generates the low voltage electrical energy needed for salt electrolysis.

Pure sodium chloride tablets (>6 mm, >99.5% NaCl) conforming to EN 973 Type A, sold as water softener salt in most supermarkets.

The Medium version disinfects approximately 55,000 litres per refill and takes 1.1 kg of salt - for an average household that is 6 to 12 months of use. The Large version needs new salt after approximately 120,000 litres and takes 2.4 kg for a full refill.

Nothing harmful. Water continues to flow normally through your tap - Sensiblue simply stops disinfecting. The LED indicator on top turns red when it is time to refill. You refill with standard water softener salt, available at any supermarket.

Minimal. Check the salt level and LED colour every two weeks or every 5,000 litres. A full system check is recommended after 300,000 litres or 3 years (whichever comes first), then yearly. There are no filters to replace and no parts to service under normal use.

Watch the step-by-step maintenance guide below.

Yes. Sensiblue draws no mains electricity at all - the turbine powers it. And by replacing thermal disinfection (60°C+) with electrochemical disinfection, you can lower your hot water temperature to 45°C or less, saving 12-50% on hot water energy costs depending on your heating system.

Yes. Sensiblue is NSF/ANSI 60 and CE certified (EN 60335-1 and EN 55014) and certified for use in 21+ EU countries. The technology has been independently tested by KWR Water Research Institute, the Netherlands' leading water research body, at 99.99% bacterial and 99.9% viral elimination, and it produces disinfection by-products 10-50x below the strictest EU limits.

7 years, 700,000 litres, or 70,000 start/stop cycles - whichever comes first, backed by an official Netherlands replacement warranty. It covers non-wearing parts and requires proper installation and maintenance per the manual.