Houilles
Yes. Tap water in Houilles is low risk. Safe to drink from the tap.
Is it safe?
Franciliane (veolia)
Low risk
Safe to drink from the tap
97.3% of bacterial tests passed and 100% of chemical tests passed, from 39 samples.
Supplied by Franciliane (veolia).
Tests over a limit this year: Enterococci bacteria.
Hardness: Moderate (22 °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 Houilles, Île-de-France?
Yes. Tap water in Houilles 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.