Pierrefonds
Yes. Tap water in Pierrefonds is low risk. Safe to drink from the tap.
Is it safe?
S E A O
Low risk
Safe to drink from the tap
100% of bacterial tests passed and 85.7% of chemical tests passed, from 7 samples.
Supplied by S E A O.
Tests over a limit this year: Pesticide residue (chloridazon), Total pesticides.
Hardness: Very hard (38.6 °f).
Source
French Ministry of Health drinking water checks (data.gouv.fr).
Period covered: January to September 2026.
Covers communes of roughly 1,000 people or more. Ratings weigh how many bacterial and chemical tests passed. A single failed test does not by itself lower a rating. Hardness is the median measured this year, in French degrees.
Common questions
Can I drink the tap water in Pierrefonds, Hauts-de-France?
Yes. Tap water in Pierrefonds is low risk. Safe to drink from the tap.
Where do these ratings come from?
French Ministry of Health drinking water checks (data.gouv.fr). Period covered: January to September 2026.