Cesson
Yes. Tap water in Cesson is low risk. Safe to drink from the tap.
Is it safe?
100%
Cda Grand Paris Sud
Low risk
Safe to drink from the tap
100% of bacterial tests passed and 100% of chemical tests passed, from 21 samples.
Supplied by Cda Grand Paris Sud.
Hardness: Hard (28 °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 Cesson, Île-de-France?
Yes. Tap water in Cesson 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.