Municipality profile · Grand Duchy of Luxembourg
Rosport-Mompach
Official record of the quality of the water distributed in Rosport-Mompach. Data sourced from the open data sets of the Water Management Administration (AGE).
Updated: 2026-06-11
Official municipal sourceHard water (25.6 °fH) in Rosport-Mompach — a softener cuts limescale and protects your appliances.
Installers in LuxembourgScore qualité-eau.lu
National rank
26 / 106
National avg.
20.4°fH
Detailed indicators
Hardness
25.6°fH
Hard
Range: 25.6 – 25.6°fH (13 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 Rosport-Mompach
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 Rosport-Mompach?
The water here is 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.
Water softener strongly recommended
At 25.6 °fH, the water is hard: limescale furs up water heaters and pipes and raises your energy bill. A softener typically pays for itself within 3 to 5 years.
Reverse osmosis — pure drinking water
Rosport-Mompach, 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 — Rosport-Mompach
+Is the water in Rosport-Mompach drinkable?
Yes. Rosport-Mompach 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 Rosport-Mompach?
Yes, strongly recommended. The average hardness (25.6°fH) is high. Above 25°fH, limescale damages pipes and water heaters. A softener typically pays for itself in 3 to 5 years.
+What is the exact water hardness in Rosport-Mompach?
The average hardness is 25.6°fH. It varies across the 13 measured distribution zones, between 25.6°fH and 25.6°fH.
+Are there nitrates in the water of Rosport-Mompach?
Rosport-Mompach, 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 Rosport-Mompach?
In Rosport-Mompach, the water is hard (25.6°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, Rosport-Mompach 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 Rosport-Mompach: which solutions?
In Rosport-Mompach (hard water, 25.6°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 Rosport-Mompach with a free quote, installation and after-sales service.
+Who should you call to install a water softener in Rosport-Mompach?
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 Rosport-Mompach with a free quote, fitting and after-sales service. Request your quote to be contacted.