Drinking water quality in Saint-Étienne

Q: Is tap water in Saint-Étienne safe to drink?

Yes. The latest official test (30 June 2026) checked the tap water in Saint-Étienne and it passed every requirement.

Q: How high are PFAS levels in Saint-Étienne's drinking water?

The total of 20 PFAS ("forever chemicals") was last measured at <0,029 µg/L. The EU limit is 0.1 µg/L, so this water is at 0 % of the limit. (below the EU limit)

Q: How hard is the water in Saint-Étienne?

The water hardness in Saint-Étienne is 8.3 °f (soft). This mainly matters for household appliances and detergent dosing, not for health.

Q: Where does this data come from?

All values come from official publications: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM). Retrieved on 28 August 2026.

Region: Auvergne-Rhône-Alpes Population: 173,136 Water supplier: SAUR Latest sample: 30 June 2026

PFAS in drinking water

EU legal limit

<0,029 µg/L Limit: 0.1 µg/L within limit

The total of 20 PFAS ("forever chemicals") was last measured at <0,029 µg/L. The EU limit is 0.1 µg/L, so this water is at 0 % of the limit. (19 January 2026)

This source does not list each PFAS substance separately, so we cannot compare this water with the health limit.

Official assessment

The latest official test passed all quality requirements.

„Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés.“

Microbiology: within limit Chemistry: within limit

Show all 19 official measurements

Parameter	Value	Limit	Status
Nitrate	3.8 mg/L	≤ 50 mg/L	within limit
Nitrite	<0,01 mg/L	≤ 0.5 mg/L	within limit
Lead	<2 µg/L	≤ 10 µg/L	within limit
Copper	<0,010 mg(Cu)/L	≤ 2 mg(Cu)/L	within limit
Nickel	<5 µg/L	≤ 20 µg/L	within limit
Chromium	<5 µg/L	≤ 50 µg/L	within limit
Uranium	<10 µg/L	≤ 30 µg/L	within limit
Fluoride	0.06 mg/L	≤ 1.5 mg/L	within limit
Escherichia coli	<1 n/(100mL)	≤ 0 mL)	within limit
Enterococci	<1 n/(100mL)	≤ 0 mL)	within limit
Coliform bacteria	<1 n/(100mL)	≤ 0 mL)	within limit
pH	8 unité pH	6.5–9 unité pH	within limit
Water hardness	8.3 °f	no limit	informational
Electrical conductivity	229 µS/cm	200–1,100 µS/cm	within limit
Chloride	20 mg/L	≤ 250 mg/L	within limit
Sulphate	4.6 mg/L	≤ 250 mg/L	within limit
Sodium	7.7 mg/L	≤ 200 mg/L	within limit
Iron	17 µg/L	≤ 200 µg/L	within limit
Turbidity	0.11 NFU	≤ 2 NFU	within limit

See the full results

See every official test result for Saint-Étienne, including each PFAS substance. Free, just leave your email.

Frequently asked questions

Is tap water in Saint-Étienne safe to drink?

Yes. The latest official test (30 June 2026) checked the tap water in Saint-Étienne and it passed every requirement.

How high are PFAS levels in Saint-Étienne's drinking water?

The total of 20 PFAS ("forever chemicals") was last measured at <0,029 µg/L. The EU limit is 0.1 µg/L, so this water is at 0 % of the limit. (below the EU limit)

How hard is the water in Saint-Étienne?

The water hardness in Saint-Étienne is 8.3 °f (soft). This mainly matters for household appliances and detergent dosing, not for health.

Where does this data come from?