AYUS
Client area
EN
Book a free visit
THE WATER IN LISBOA · DISTRICT OF LISBOA

Tap water in Lisboa.

Ayus installs and maintains 4-stage water filters at home, hidden under the kitchen sink. This page sets out what is known about the mains water in Lisboa: where it comes from, who treats it and what it contains.

MUNICIPALITY · DISTRICT OF LISBOA

Lisboa

WATER UTILITYEPAL
WHERE THE WATER COMES FROMCastelo do Bode, the Tagus and the Alviela
2 a 9Magnesium · mg/L
40 a 170Hardness · mg/L CaCO₃

In Lisbon, the water comes mainly from the Castelo do Bode reservoir, topped up by the Tagus and the Alviela. It is soft to medium water, low in magnesium.

Soft to medium water, low in magnesium: the filter removes the chlorine taste and adds magnesium.

Sources: EPAL and APRH. The values are the ones the water utility publishes; during the visit, we test the water in your kitchen.
WHAT THE FILTER DOES TO THE WATER IN LISBOA
  • Removes the taste and smell of chlorine.
  • Holds back the sand and rust that building pipes add.
  • Holds back microplastics: the membrane pores measure [X] µm, and a microplastic is at least 1 µm.
  • Keeps the minerals and adds magnesium.
  • Does not remove limescale.
See how the filter works →

Questions about the water in Lisboa

Where does the tap water in Lisboa come from?

In Lisbon, the water comes mainly from the Castelo do Bode reservoir, topped up by the Tagus and the Alviela. It is soft to medium water, low in magnesium.

Who manages the water in Lisboa?

The water utility is EPAL. It treats the water, distributes it and publishes the quality control results.

What values does the water in Lisboa have?

Magnesium (mg/L): 2 a 9; Hardness (mg/L CaCO₃): 40 a 170. Source: EPAL and APRH. During the visit, we test the water in your kitchen.

Does the Ayus filter make a difference in Lisboa?

Soft to medium water, low in magnesium: the filter removes the chlorine taste and adds magnesium.

Does Ayus install filters in Lisboa?

We install in Lisbon, available right away, and other districts by appointment. Leave us your details and we will arrange a date.