Municipality profile · Grand Duchy of Luxembourg
Helperknapp
Official record of the quality of the water distributed in Helperknapp. Data sourced from the open data sets of the Water Management Administration (AGE).
Updated: 2026-05-11
Official municipal sourceScore qualité-eau.lu
National rank
40 / 106
National avg.
20.4°fH
Detailed indicators
Hardness
21.3°fH
Moderately hard
Range: 21.3 – 21.3°fH (6 zones)
Drëpsi certification
✓
AGE audit validated
Nitrates (zone)
100 %
Vulnerable zone · Dir. 91/676/EEC
Position on the French scale
Improve your water
Improving your water in Helperknapp
Compliant tap water doesn't mean ideal water. Two complementary levers: treat limescale (comfort, appliance lifespan) and purify drinking water (nitrates, pesticides, PFAS).
A softener improves daily life
At 21.3 °fH, the water is moderately hard. A softener protects your appliances, softens skin and laundry, and cuts down on descaling.
Reverse osmosis — pure drinking water
Helperknapp, like all of Luxembourg, is a nitrate vulnerable zone, and the European PFAS standard has applied since 2026. An under-sink reverse-osmosis unit removes 95–99% of nitrates, pesticides, PFAS and residues — the safest solution for the water you drink.
Not sure what you need?
Take the free diagnostic (2 min)Commercial links · partners (DSA art. 26 disclosure)
FAQ
Frequently asked questions — Helperknapp
+Is the water in Helperknapp drinkable?
Yes. Helperknapp holds the Drëpsi excellence certificate awarded by the Water Management Administration, attesting to the compliance of its drinking water installation.
+Should a water softener be installed in Helperknapp?
Optional but beneficial. The hardness in Helperknapp (21.3°fH) is in the medium range. A softener improves household comfort and extends the lifespan of appliances.
+What is the exact water hardness in Helperknapp?
The average hardness is 21.3°fH. It varies across the 6 measured distribution zones, between 21.3°fH and 21.3°fH.
+Are there nitrates in the water of Helperknapp?
Helperknapp, like the entire territory of Luxembourg, is officially classified as a vulnerable zone under the European Nitrates Directive (91/676/EEC). Concentrations at the tap remain within drinking water standards (50 mg/L max).