Municipality profile · Grand Duchy of Luxembourg
Lac de la Haute-Sûre
Official record of the quality of the water distributed in Lac de la Haute-Sûre. Data sourced from the open data sets of the Water Management Administration (AGE).
Updated: 2026-06-11
Official municipal sourceHard water (17.3 °fH) in Lac de la Haute-Sûre — a softener cuts limescale and protects your appliances.
Installers in LuxembourgScore qualité-eau.lu
National rank
62 / 106
National avg.
20.4°fH
Detailed indicators
Hardness
17.3°fH
Moderately hard
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 Lac de la Haute-Sûre
Compliant tap water doesn't mean ideal water. Two complementary levers: treat limescale (comfort, appliance lifespan) and purify drinking water (nitrates, pesticides, PFAS).
Which softener for Lac de la Haute-Sûre?
The water here is moderately hard. Tell us your household size for a model recommendation and a price guide.
People in the household
Tick this if several taps/showers often run at the same time — we then pick a duo setup that supplies softened water non-stop.
Recommendation
Suited to a household of 4 people.
Indicative supplied-and-installed price incl. VAT (estimate). Firm quote after a technical visit. Solution provided by our partner adoucisseur-eau.lu.
A softener improves daily life
At 17.3 °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
Lac de la Haute-Sûre, 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 — Lac de la Haute-Sûre
+Is the water in Lac de la Haute-Sûre drinkable?
Yes. Lac de la Haute-Sûre 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 Lac de la Haute-Sûre?
Optional but beneficial. The hardness in Lac de la Haute-Sûre (17.3°fH) is in the medium range. A softener improves household comfort and extends the lifespan of appliances.
+What is the exact water hardness in Lac de la Haute-Sûre?
The hardness of the water distributed in Lac de la Haute-Sûre is 17.3°fH (French degrees).
+Are there nitrates in the water of Lac de la Haute-Sûre?
Lac de la Haute-Sûre, 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).
+Do you need a reverse-osmosis unit in Lac de la Haute-Sûre?
In Lac de la Haute-Sûre, the water is hard (17.3°fH): a softener treats limescale throughout the house, and an under-sink reverse-osmosis unit completes the setup for drinking water. Like all of Luxembourg, Lac de la Haute-Sûre is a nitrate vulnerable zone; an RO unit removes nitrates, pesticides and PFAS from the water you drink. Installation via our partner installers in Luxembourg.
+Water softener and treatment in Lac de la Haute-Sûre: which solutions?
In Lac de la Haute-Sûre (hard water, 17.3°fH), two complementary treatments: the softener, fitted at the water inlet, removes limescale and protects the whole house; the reverse-osmosis unit, under the sink, purifies drinking water (nitrates, PFAS). Our partner installers operate in Lac de la Haute-Sûre with a free quote, installation and after-sales service.
+Who should you call to install a water softener in Lac de la Haute-Sûre?
qualité-eau.lu does not install directly: we connect you with specialised partner installers in Luxembourg — adoucisseur-eau.lu for softeners, osmoseur.lu for reverse osmosis. They operate in Lac de la Haute-Sûre with a free quote, fitting and after-sales service. Request your quote to be contacted.