Qualité de l’eau du robinet des Côtes-d’Armor (22)
344 communes des Côtes-d’Armor, 611 859 habitants. L’eau y est en moyenne douce (13,1 °f), avec 19,7 mg/L de nitrates en moyenne communale. Les PFAS ont été recherchés dans l’eau distribuée de 200 communes ; 200 en quantifient au moins une trace, et 3 dépassent la limite.
Communes
344
documentées par le contrôle sanitaire
Dureté moyenne
13,1
°f, eau douce
Nitrates moyens
19,7
mg/L, limite 50 mg/L
PFAS au-dessus de la limite
3
communes, sur 200 analysées
Les eaux les plus dures des Côtes-d’Armor
| Loscouët-sur-Meu | 28,0 | |
|---|---|---|
| Saint-Juvat | 25,0 | |
| Les Champs-Géraux | 24,0 | |
| Le Quiou | 24,0 | |
| Saint-André-des-Eaux | 24,0 | |
| Saint-Judoce | 24,0 | |
| Tréfumel | 24,0 | |
| Langoat | 22,0 | |
| Ploëzal | 22,0 | |
| Runan | 22,0 |
À l’inverse, les plus douces
| Le Bodéo | 5,1 | |
|---|---|---|
| La Harmoye | 5,1 | |
| Lanfains | 5,1 | |
| Saint-Bihy | 5,1 | |
| Cohiniac | 5,2 | |
| Le Fœil | 5,2 | |
| Le Leslay | 5,2 | |
| Plaine-Haute | 5,2 | |
| Quintin | 5,2 | |
| Saint-Gildas | 5,2 |
Les deux classements partagent la même échelle : la longueur d’une barre se compare d’un tableau à l’autre.
Où les nitrates sont les plus élevés
| Les Champs-Géraux | 40,0 | |
|---|---|---|
| Le Quiou | 40,0 | |
| Saint-André-des-Eaux | 40,0 | |
| Saint-Judoce | 40,0 | |
| Saint-Juvat | 40,0 | |
| Tréfumel | 40,0 | |
| Saint-Mayeux | 35,0 | |
| Gomené | 34,0 | |
| Laurenan | 34,0 | |
| Moncontour | 34,0 |
La limite réglementaire est de 50 mg/L. Ces valeurs sont les dernières connues par commune, tous réseaux confondus.
Les communes où des PFAS ont été quantifiés
Quantifié ne veut pas dire préoccupant : la limite est à 0,1 µg/L, et la colonne de droite donne la part qu’en occupe chaque commune.
| Commune | Somme des 20 PFAS | Part du seuil |
|---|---|---|
| Plélo | 0,428 µg/L | 428 % |
| Plerneuf | 0,428 µg/L | 428 % |
| Trémuson | 0,428 µg/L | 428 % |
| Île-de-Bréhat | 0,0648 µg/L | 65 % |
| Kerfot | 0,0648 µg/L | 65 % |
| Lanleff | 0,0648 µg/L | 65 % |
| Lanloup | 0,0648 µg/L | 65 % |
| Paimpol | 0,0648 µg/L | 65 % |
| Pléhédel | 0,0648 µg/L | 65 % |
| Ploubazlanec | 0,0648 µg/L | 65 % |
| Plouézec | 0,0648 µg/L | 65 % |
| Plourivo | 0,0648 µg/L | 65 % |
| Yvias | 0,0648 µg/L | 65 % |
| Pordic | 0,018 µg/L | 18 % |
| Pléguien | 0,0165 µg/L | 17 % |
| Plérin | 0,0165 µg/L | 17 % |
| Plouha | 0,0165 µg/L | 17 % |
| Val-d'Arguenon | 0,0142 µg/L | 14 % |
| Saint-Cast-le-Guildo | 0,0142 µg/L | 14 % |
| Le Mené | 0,0136 µg/L | 14 % |
| Merdrignac | 0,0136 µg/L | 14 % |
| Mérillac | 0,0136 µg/L | 14 % |
| Le Moustoir | 0,0104 µg/L | 10 % |
| Trébrivan | 0,0104 µg/L | 10 % |
| Treffrin | 0,0104 µg/L | 10 % |
| Ploubezre | 0,01 µg/L | 10 % |
| Bégard | 0,0091 µg/L | 9 % |
| Berhet | 0,0091 µg/L | 9 % |
| Brélidy | 0,0091 µg/L | 9 % |
| Cavan | 0,0091 µg/L | 9 % |
| Coatascorn | 0,0091 µg/L | 9 % |
| Kermoroc'h | 0,0091 µg/L | 9 % |
| Landebaëron | 0,0091 µg/L | 9 % |
| Mantallot | 0,0091 µg/L | 9 % |
| Pédernec | 0,0091 µg/L | 9 % |
| Pluzunet | 0,0091 µg/L | 9 % |
| Prat | 0,0091 µg/L | 9 % |
| Saint-Laurent | 0,0091 µg/L | 9 % |
| Squiffiec | 0,0091 µg/L | 9 % |
| Trégonneau | 0,0091 µg/L | 9 % |
Voir la carte des PFAS des Côtes-d’Armor, rejets industriels compris →
Les 344 communes des Côtes-d’Armor
| Commune | Habitants | Dureté | Nitrates | PFAS |
|---|---|---|---|---|
| Allineuc | 589 | 14,0 °f | 3,7 | n.d. |
| Andel | 1 180 | 13,0 °f | 26,0 | n.d. |
| Aucaleuc | 973 | 15,0 °f | 12,0 | 0,0055 |
| Beaussais-sur-Mer | 4 498 | 13,0 °f | 24,0 | n.d. |
| Bégard | 4 889 | 11,0 °f | 26,0 | 0,0091 |
| Belle-Isle-en-Terre | 1 024 | 14,0 °f | 20,0 | n.d. |
| Berhet | 272 | 11,0 °f | 26,0 | 0,0091 |
| Binic-Étables-sur-Mer | 7 041 | 15,0 °f | 23,0 | 0,0012 |
| Bobital | 1 170 | 15,0 °f | 12,0 | 0,0055 |
| Bon Repos sur Blavet | 1 248 | 8,2 °f | 3,5 | 0,0012 |
| Boqueho | 1 054 | 7,6 °f | 27,0 | n.d. |
| Bourbriac | 2 145 | 13,0 °f | 9,9 | 0,0023 |
| Bourseul | 1 277 | 13,0 °f | 25,0 | n.d. |
| Bréhand | 1 684 | 12,0 °f | 22,0 | n.d. |
| Brélidy | 334 | 11,0 °f | 26,0 | 0,0091 |
| Bringolo | 518 | 12,0 °f | 9,2 | n.d. |
| Broons | 2 943 | 12,0 °f | 33,0 | 0,0011 |
| Brusvily | 1 153 | 15,0 °f | 12,0 | 0,0055 |
| Bulat-Pestivien | 406 | 11,0 °f | 9,7 | 0,0044 |
| Calanhel | 245 | 11,0 °f | 9,7 | 0,0044 |
| Callac | 2 312 | 11,0 °f | 9,7 | 0,0044 |
| Calorguen | 729 | 15,0 °f | 12,0 | 0,0055 |
| Camlez | 845 | 19,0 °f | 27,0 | 0,0024 |
| Canihuel | 350 | 11,0 °f | 9,4 | n.d. |
| Caouënnec-Lanvézéac | 899 | 9,0 °f | 0,0 | 0,0049 |
| Carnoët | 673 | 11,0 °f | 9,7 | 0,0044 |
| Caulnes | 2 501 | 13,0 °f | 26,0 | n.d. |
| Caurel | 353 | 13,0 °f | 12,0 | n.d. |
| Cavan | 1 571 | 11,0 °f | 26,0 | 0,0091 |
| Châtelaudren-Plouagat | 3 974 | 12,0 °f | 9,2 | 0,0011 |
| Coadout | 532 | 13,0 °f | 9,9 | 0,0023 |
| Coatascorn | 248 | 11,0 °f | 26,0 | 0,0091 |
| Coatréven | 489 | 14,0 °f | 5,9 | 0,0029 |
| Coëtmieux | 1 869 | 13,0 °f | 26,0 | n.d. |
| Cohiniac | 402 | 5,2 °f | 29,0 | 0,0037 |
| Corlay | 914 | 8,7 °f | 16,0 | n.d. |
| Corseul | 2 331 | 13,0 °f | 24,0 | n.d. |
| Créhen | 1 671 | 13,0 °f | 24,0 | n.d. |
| Dinan | 14 764 | 15,0 °f | 12,0 | 0,0055 |
| Duault | 385 | 11,0 °f | 9,7 | 0,0044 |
| Éréac | 675 | 9,4 °f | 29,0 | n.d. |
| Erquy | 3 974 | 13,0 °f | 26,0 | n.d. |
| Évran | 1 784 | 16,4 °f | 13,8 | 0,0022 |
| Fréhel | 1 611 | 13,0 °f | 26,0 | n.d. |
| Gausson | 648 | 13,0 °f | 15,0 | n.d. |
| Glomel | 1 440 | 7,6 °f | 7,7 | 0,0076 |
| Gomené | 560 | 8,9 °f | 34,0 | 0,0011 |
| Gommenec'h | 551 | 18,0 °f | 7,5 | n.d. |
| Gouarec | 866 | 14,0 °f | 11,0 | n.d. |
| Goudelin | 1 751 | 18,0 °f | 7,5 | n.d. |
| Grâce-Uzel | 423 | 13,0 °f | 15,0 | 0,0088 |
| Grâces | 2 601 | 9,8 °f | 21,0 | 0,0012 |
| Guenroc | 215 | 13,0 °f | 30,0 | n.d. |
| Guerlédan | 2 532 | 12,0 °f | 16,0 | 0,0012 |
| Guingamp | 7 111 | 9,8 °f | 21,0 | 0,0012 |
| Guitté | 701 | 16,0 °f | 29,0 | n.d. |
| Gurunhuel | 409 | 10,0 °f | 18,0 | n.d. |
| Hémonstoir | 687 | 12,0 °f | 32,0 | 0,0012 |
| Hénanbihen | 1 479 | 13,0 °f | 25,0 | n.d. |
| Hénansal | 1 294 | 13,0 °f | 26,0 | n.d. |
| Hénon | 2 310 | 12,0 °f | 22,0 | 0,0024 |
| Hillion | 4 335 | 11,0 °f | 16,0 | 0,002 |
| Île-de-Bréhat | 429 | 17,0 °f | 25,0 | 0,0648 |
| Illifaut | 706 | 13,0 °f | 31,0 | 0,0012 |
| Jugon-les-Lacs | 2 541 | 12,0 °f | 25,0 | n.d. |
| Kerbors | 292 | 21,0 °f | 19,0 | 0,0015 |
| Kerfot | 642 | 17,0 °f | 25,0 | 0,0648 |
| Kergrist-Moëlou | 629 | 7,6 °f | 7,7 | 0,0076 |
| Kerien | 245 | 13,0 °f | 9,9 | 0,0023 |
| Kermaria-Sulard | 1 112 | 14,0 °f | 5,9 | 0,0029 |
| Kermoroc'h | 443 | 11,0 °f | 26,0 | 0,0091 |
| Kerpert | 268 | 11,0 °f | 9,4 | n.d. |
| La Bouillie | 824 | 12,0 °f | 25,0 | n.d. |
| La Chapelle-Blanche | 211 | 16,0 °f | 29,0 | n.d. |
| La Chapelle-Neuve | 413 | 10,0 °f | 18,0 | n.d. |
| La Chèze | 578 | 12,0 °f | 32,0 | n.d. |
| La Harmoye | 386 | 5,1 °f | 30,0 | 0,0027 |
| La Landec | 761 | 12,0 °f | 25,0 | n.d. |
| La Malhoure | 626 | 13,0 °f | 27,0 | 0,0061 |
| La Méaugon | 1 320 | 10,0 °f | 3,9 | n.d. |
| La Motte | 2 173 | 11,0 °f | 28,0 | 0,0012 |
| La Prénessaye | 885 | 12,0 °f | 32,0 | n.d. |
| La Roche-Jaudy | 2 629 | 21,0 °f | 19,0 | 0,0015 |
| La Vicomté-sur-Rance | 1 149 | 12,0 °f | 0,0 | n.d. |
| Lamballe-Armor | 17 241 | 13,0 °f | 26,0 | n.d. |
| Lancieux | 1 611 | 13,0 °f | 24,0 | n.d. |
| Landebaëron | 167 | 11,0 °f | 26,0 | 0,0091 |
| Landébia | 461 | 13,0 °f | 25,0 | n.d. |
| Landéhen | 1 444 | 13,0 °f | 26,0 | n.d. |
| Lanfains | 1 077 | 5,1 °f | 30,0 | 0,0027 |
| Langoat | 1 175 | 22,0 °f | 26,0 | 0,0017 |
| Langrolay-sur-Rance | 991 | 12,0 °f | 24,0 | n.d. |
| Languédias | 563 | 12,0 °f | 25,0 | n.d. |
| Languenan | 1 170 | 13,0 °f | 24,0 | n.d. |
| Langueux | 7 939 | 11,0 °f | 16,0 | 0,002 |
| Lanleff | 121 | 17,0 °f | 25,0 | 0,0648 |
| Lanloup | 252 | 17,0 °f | 25,0 | 0,0648 |
| Lanmérin | 575 | 14,0 °f | 5,9 | 0,0029 |
| Lanmodez | 394 | 21,0 °f | 19,0 | 0,0015 |
| Lannebert | 423 | 18,0 °f | 7,5 | n.d. |
| Lannion | 20 315 | 7,2 °f | 22,0 | 0,006 |
| Lanrelas | 874 | 13,0 °f | 26,0 | 0,0021 |
| Lanrivain | 464 | 11,0 °f | 9,7 | 0,0044 |
| Lanrodec | 1 387 | 12,0 °f | 9,2 | n.d. |
| Lantic | 1 814 | 16,0 °f | 25,0 | 0,0069 |
| Lanvallay | 4 291 | 15,0 °f | 12,0 | 0,0055 |
| Lanvellec | 608 | 15,0 °f | 20,0 | 0,009 |
| Lanvollon | 1 969 | 18,0 °f | 7,5 | n.d. |
| Laurenan | 744 | 8,9 °f | 34,0 | 0,0011 |
| Le Bodéo | 186 | 5,1 °f | 30,0 | 0,0027 |
| Le Faouët | 412 | 18,0 °f | 7,5 | n.d. |
| Le Fœil | 1 375 | 5,2 °f | 29,0 | 0,0037 |
| Le Haut-Corlay | 658 | 8,7 °f | 16,0 | n.d. |
| Le Hinglé | 927 | 15,0 °f | 12,0 | 0,0055 |
| Le Leslay | 152 | 5,2 °f | 29,0 | 0,0037 |
| Le Mené | 6 556 | 14,0 °f | 9,2 | 0,0136 |
| Le Merzer | 986 | 18,0 °f | 7,5 | n.d. |
| Le Moustoir | 656 | 10,0 °f | 12,0 | 0,0104 |
| Le Quillio | 597 | 14,0 °f | 10,0 | n.d. |
| Le Quiou | 359 | 24,0 °f | 40,0 | 0,0012 |
| Le Vieux-Bourg | 742 | 14,0 °f | 16,0 | n.d. |
| Le Vieux-Marché | 1 299 | 15,0 °f | 20,0 | 0,009 |
| Les Champs-Géraux | 1 054 | 24,0 °f | 40,0 | 0,0012 |
| Lescouët-Gouarec | 216 | 12,0 °f | 19,0 | n.d. |
| Lézardrieux | 1 623 | 21,0 °f | 19,0 | 0,0015 |
| Loc-Envel | 75 | 10,0 °f | 18,0 | n.d. |
| Locarn | 434 | 9,1 °f | 8,0 | n.d. |
| Loguivy-Plougras | 840 | 15,0 °f | 20,0 | 0,009 |
| Lohuec | 245 | 11,0 °f | 9,7 | 0,0044 |
| Loscouët-sur-Meu | 659 | 28,0 °f | 22,0 | n.d. |
| Louannec | 3 019 | 19,0 °f | 27,0 | 0,0024 |
| Louargat | 2 448 | 8,6 °f | 11,0 | 0,001 |
| Loudéac | 9 987 | 12,0 °f | 32,0 | 0,0012 |
| Maël-Carhaix | 1 497 | 9,1 °f | 8,0 | n.d. |
| Maël-Pestivien | 362 | 11,0 °f | 9,7 | 0,0044 |
| Magoar | 75 | 13,0 °f | 9,9 | 0,0023 |
| Mantallot | 226 | 11,0 °f | 26,0 | 0,0091 |
| Matignon | 1 771 | 12,0 °f | 25,0 | n.d. |
| Mégrit | 812 | 12,0 °f | 25,0 | n.d. |
| Mellionnec | 443 | 12,0 °f | 19,0 | n.d. |
| Merdrignac | 3 139 | 13,0 °f | 31,0 | 0,0136 |
| Mérillac | 249 | 10,0 °f | 30,0 | 0,0136 |
| Merléac | 481 | 14,0 °f | 3,7 | n.d. |
| Minihy-Tréguier | 1 271 | 19,0 °f | 27,0 | n.d. |
| Moncontour | 738 | 16,0 °f | 34,0 | n.d. |
| Moustéru | 645 | 13,0 °f | 9,9 | 0,0023 |
| Noyal | 985 | 13,0 °f | 26,0 | n.d. |
| Pabu | 2 771 | 9,8 °f | 21,0 | 0,0012 |
| Paimpol | 7 341 | 17,0 °f | 25,0 | 0,0648 |
| Paule | 671 | 9,1 °f | 8,0 | n.d. |
| Pédernec | 1 893 | 11,0 °f | 26,0 | 0,0091 |
| Penguily | 617 | 13,0 °f | 27,0 | 0,0061 |
| Penvénan | 2 584 | 19,0 °f | 27,0 | 0,0024 |
| Perros-Guirec | 7 336 | 12,0 °f | 23,0 | 0,001 |
| Peumerit-Quintin | 191 | 11,0 °f | 9,7 | 0,0044 |
| Plaine-Haute | 1 712 | 5,2 °f | 29,0 | 0,0037 |
| Plaintel | 4 602 | 15,0 °f | 22,0 | 0,0018 |
| Plancoët | 3 104 | 13,0 °f | 24,0 | n.d. |
| Pléboulle | 721 | 13,0 °f | 26,0 | n.d. |
| Plédéliac | 1 662 | 17,0 °f | 10,0 | n.d. |
| Plédran | 6 933 | 11,0 °f | 16,0 | 0,002 |
| Pléguien | 1 443 | 13,0 °f | 23,0 | 0,0165 |
| Pléhédel | 1 306 | 17,0 °f | 25,0 | 0,0648 |
| Plélan-le-Petit | 1 992 | 12,0 °f | 25,0 | n.d. |
| Plélauff | 716 | 12,0 °f | 19,0 | n.d. |
| Plélo | 3 344 | 15,0 °f | 22,0 | 0,428 |
| Plémet | 3 764 | 12,0 °f | 32,0 | n.d. |
| Plémy | 1 578 | 13,0 °f | 6,2 | 0,0024 |
| Plénée-Jugon | 2 579 | 16,0 °f | 29,0 | n.d. |
| Pléneuf-Val-André | 3 988 | 13,0 °f | 26,0 | n.d. |
| Plérin | 14 425 | 13,0 °f | 23,0 | 0,0165 |
| Plerneuf | 1 123 | 15,0 °f | 22,0 | 0,428 |
| Plésidy | 563 | 13,0 °f | 9,9 | 0,0023 |
| Pleslin-Trigavou | 4 065 | 12,0 °f | 24,0 | n.d. |
| Plestan | 1 635 | 13,0 °f | 26,0 | 0,0061 |
| Plestin-les-Grèves | 3 639 | 13,0 °f | 21,0 | 0,0026 |
| Pleubian | 2 365 | 21,0 °f | 19,0 | 0,0015 |
| Pleudaniel | 921 | 21,0 °f | 19,0 | 0,0015 |
| Pleudihen-sur-Rance | 2 924 | 12,0 °f | 0,0 | n.d. |
| Pleumeur-Bodou | 3 848 | 7,2 °f | 22,0 | 0,006 |
| Pleumeur-Gautier | 1 188 | 21,0 °f | 19,0 | 0,0015 |
| Plévenon | 750 | 13,0 °f | 26,0 | n.d. |
| Plévin | 754 | 8,6 °f | 11,0 | n.d. |
| Plœuc-L'Hermitage | 4 103 | 13,0 °f | 6,2 | 0,0024 |
| Ploëzal | 1 229 | 22,0 °f | 26,0 | 0,0017 |
| Plorec-sur-Arguenon | 467 | 12,0 °f | 25,0 | n.d. |
| Plouaret | 2 237 | 15,0 °f | 20,0 | 0,009 |
| Plouasne | 1 798 | 15,6 °f | 18,3 | 0,0029 |
| Ploubazlanec | 2 932 | 17,0 °f | 25,0 | 0,0648 |
| Ploubezre | 3 780 | 11,0 °f | 25,0 | 0,01 |
| Plouëc-du-Trieux | 1 140 | 9,1 °f | 24,0 | 0,0011 |
| Plouër-sur-Rance | 3 416 | 13,0 °f | 24,0 | 0,0042 |
| Plouézec | 3 147 | 17,0 °f | 25,0 | 0,0648 |
| Ploufragan | 11 507 | 12,0 °f | 23,0 | 0,001 |
| Plougonver | 760 | 10,0 °f | 18,0 | n.d. |
| Plougras | 426 | 15,0 °f | 20,0 | 0,0011 |
| Plougrescant | 1 242 | 19,0 °f | 27,0 | 0,0024 |
| Plouguenast-Langast | 2 380 | 11,0 °f | 28,0 | n.d. |
| Plouguernével | 1 601 | 9,9 °f | 18,0 | 0,0063 |
| Plouguiel | 1 747 | 19,0 °f | 27,0 | 0,0024 |
| Plouha | 4 634 | 13,0 °f | 23,0 | 0,0165 |
| Plouisy | 2 007 | 9,8 °f | 21,0 | 0,0012 |
| Ploulec'h | 1 598 | 10,0 °f | 25,0 | n.d. |
| Ploumagoar | 5 414 | 11,0 °f | 16,0 | 0,0052 |
| Ploumilliau | 2 466 | 13,0 °f | 8,0 | n.d. |
| Plounérin | 798 | 15,0 °f | 20,0 | 0,009 |
| Plounévez-Moëdec | 1 479 | 15,0 °f | 20,0 | 0,009 |
| Plounévez-Quintin | 1 064 | 10,0 °f | 22,0 | n.d. |
| Plourac'h | 351 | 11,0 °f | 9,7 | 0,0044 |
| Plourhan | 2 155 | 16,0 °f | 25,0 | 0,0069 |
| Plourivo | 2 270 | 17,0 °f | 25,0 | 0,0648 |
| Plouvara | 1 144 | 15,0 °f | 22,0 | 0,0035 |
| Plouzélambre | 198 | 13,0 °f | 20,0 | n.d. |
| Pludual | 738 | 18,0 °f | 7,5 | n.d. |
| Plufur | 529 | 14,0 °f | 21,0 | n.d. |
| Plumaudan | 1 421 | 12,0 °f | 25,0 | n.d. |
| Plumaugat | 1 160 | 13,0 °f | 26,0 | 0,0021 |
| Plumieux | 1 678 | 12,0 °f | 32,0 | n.d. |
| Plurien | 1 521 | 13,0 °f | 26,0 | n.d. |
| Plusquellec | 559 | 11,0 °f | 9,7 | 0,0044 |
| Plussulien | 520 | 8,2 °f | 3,5 | 0,0012 |
| Pluzunet | 1 017 | 11,0 °f | 26,0 | 0,0091 |
| Pommeret | 2 116 | 13,0 °f | 26,0 | n.d. |
| Pommerit-le-Vicomte | 1 809 | 18,0 °f | 7,5 | n.d. |
| Pont-Melvez | 595 | 13,0 °f | 9,9 | 0,0023 |
| Pontrieux | 1 002 | 9,1 °f | 24,0 | 0,0011 |
| Pordic | 7 454 | 12,0 °f | 23,0 | 0,018 |
| Prat | 1 078 | 11,0 °f | 26,0 | 0,0091 |
| Quemper-Guézennec | 1 118 | 9,1 °f | 24,0 | 0,0011 |
| Quemperven | 417 | 9,9 °f | 0,0 | 0,0049 |
| Quessoy | 3 969 | 14,0 °f | 9,2 | n.d. |
| Quévert | 3 955 | 15,0 °f | 12,0 | 0,0055 |
| Quintenic | 363 | 13,0 °f | 26,0 | n.d. |
| Quintin | 2 739 | 5,2 °f | 29,0 | 0,0037 |
| Rospez | 1 794 | 14,0 °f | 5,9 | 0,0029 |
| Rostrenen | 3 282 | 10,0 °f | 9,4 | n.d. |
| Rouillac | 409 | 6,7 °f | 31,0 | n.d. |
| Ruca | 595 | 13,0 °f | 28,0 | n.d. |
| Runan | 245 | 22,0 °f | 26,0 | 0,0017 |
| Saint-Adrien | 376 | 12,0 °f | 1,9 | n.d. |
| Saint-Agathon | 2 169 | 11,0 °f | 16,0 | 0,0052 |
| Saint-Alban | 2 397 | 12,0 °f | 25,0 | n.d. |
| Saint-André-des-Eaux | 409 | 24,0 °f | 40,0 | 0,0012 |
| Saint-Barnabé | 1 223 | 12,0 °f | 32,0 | n.d. |
| Saint-Bihy | 267 | 5,1 °f | 30,0 | 0,0027 |
| Saint-Brandan | 2 317 | 15,0 °f | 22,0 | 0,0018 |
| Saint-Brieuc | 44 364 | 12,0 °f | 23,0 | 0,001 |
| Saint-Caradec | 1 132 | 14,0 °f | 10,0 | n.d. |
| Saint-Carné | 1 167 | 15,0 °f | 12,0 | 0,0055 |
| Saint-Carreuc | 1 576 | 15,0 °f | 32,0 | 0,0069 |
| Saint-Cast-le-Guildo | 3 371 | 13,0 °f | 26,0 | 0,0142 |
| Saint-Clet | 877 | 9,1 °f | 24,0 | 0,0011 |
| Saint-Connan | 303 | 11,0 °f | 9,4 | n.d. |
| Saint-Connec | 258 | 14,0 °f | 10,0 | n.d. |
| Saint-Denoual | 495 | 13,0 °f | 25,0 | n.d. |
| Saint-Donan | 1 477 | 9,6 °f | 0,0 | 0,0061 |
| Saint-Étienne-du-Gué-de-l'Isle | 372 | 12,0 °f | 32,0 | n.d. |
| Saint-Fiacre | 210 | 12,0 °f | 8,2 | n.d. |
| Saint-Gildas | 248 | 5,2 °f | 29,0 | 0,0037 |
| Saint-Gilles-les-Bois | 384 | 18,0 °f | 7,5 | n.d. |
| Saint-Gilles-Pligeaux | 307 | 11,0 °f | 9,4 | n.d. |
| Saint-Gilles-Vieux-Marché | 307 | 14,0 °f | 3,7 | n.d. |
| Saint-Glen | 664 | 13,0 °f | 27,0 | 0,0061 |
| Saint-Hélen | 1 560 | 12,0 °f | 0,0 | 0,0017 |
| Saint-Hervé | 425 | 12,0 °f | 9,7 | 0,0088 |
| Saint-Igeaux | 126 | 8,2 °f | 3,5 | 0,0012 |
| Saint-Jacut-de-la-Mer | 908 | 13,0 °f | 24,0 | n.d. |
| Saint-Jean-Kerdaniel | 694 | 12,0 °f | 9,2 | n.d. |
| Saint-Jouan-de-l'Isle | 446 | 13,0 °f | 26,0 | n.d. |
| Saint-Judoce | 594 | 24,0 °f | 40,0 | 0,0012 |
| Saint-Julien | 2 101 | 15,0 °f | 22,0 | 0,0018 |
| Saint-Juvat | 663 | 25,0 °f | 40,0 | 0,0016 |
| Saint-Laurent | 541 | 11,0 °f | 26,0 | 0,0091 |
| Saint-Lormel | 882 | 13,0 °f | 25,0 | n.d. |
| Saint-Maden | 218 | 12,0 °f | 25,0 | 0,0016 |
| Saint-Martin-des-Prés | 319 | 14,0 °f | 3,7 | n.d. |
| Saint-Maudan | 399 | 12,0 °f | 32,0 | n.d. |
| Saint-Maudez | 286 | 12,0 °f | 25,0 | n.d. |
| Saint-Mayeux | 454 | 14,0 °f | 35,0 | 0,001 |
| Saint-Méloir-des-Bois | 270 | 12,0 °f | 25,0 | n.d. |
| Saint-Michel-de-Plélan | 334 | 12,0 °f | 25,0 | n.d. |
| Saint-Michel-en-Grève | 447 | 13,0 °f | 21,0 | 0,0026 |
| Saint-Nicodème | 167 | 11,0 °f | 9,7 | 0,0044 |
| Saint-Nicolas-du-Pélem | 1 523 | 11,0 °f | 9,4 | n.d. |
| Saint-Péver | 397 | 12,0 °f | 1,9 | n.d. |
| Saint-Pôtan | 839 | 12,0 °f | 25,0 | n.d. |
| Saint-Quay-Perros | 1 308 | 19,0 °f | 27,0 | 0,0024 |
| Saint-Quay-Portrieux | 3 224 | 15,0 °f | 23,0 | 0,0062 |
| Saint-Rieul | 551 | 13,0 °f | 26,0 | n.d. |
| Saint-Samson-sur-Rance | 1 625 | 14,0 °f | 14,0 | n.d. |
| Saint-Servais | 435 | 11,0 °f | 9,7 | 0,0044 |
| Saint-Thélo | 371 | 14,0 °f | 10,0 | n.d. |
| Saint-Trimoël | 526 | 9,5 °f | 29,0 | n.d. |
| Saint-Vran | 781 | 13,0 °f | 31,0 | 0,0012 |
| Sainte-Tréphine | 189 | 8,2 °f | 3,5 | 0,0012 |
| Senven-Léhart | 235 | 11,0 °f | 9,4 | n.d. |
| Sévignac | 1 117 | 16,0 °f | 29,0 | 0,0027 |
| Squiffiec | 747 | 11,0 °f | 26,0 | 0,0091 |
| Taden | 2 636 | 15,0 °f | 12,0 | 0,0055 |
| Tonquédec | 1 201 | 9,0 °f | 0,0 | n.d. |
| Tramain | 704 | 16,0 °f | 29,0 | n.d. |
| Trébédan | 441 | 12,0 °f | 25,0 | n.d. |
| Trébeurden | 3 821 | 7,7 °f | 22,0 | n.d. |
| Trébrivan | 761 | 10,0 °f | 12,0 | 0,0104 |
| Trébry | 844 | 9,5 °f | 29,0 | n.d. |
| Trédaniel | 906 | 9,4 °f | 18,0 | n.d. |
| Trédarzec | 1 055 | 21,0 °f | 19,0 | 0,0015 |
| Trédias | 513 | 12,0 °f | 25,0 | n.d. |
| Trédrez-Locquémeau | 1 478 | 13,0 °f | 21,0 | 0,0026 |
| Tréduder | 210 | 13,0 °f | 20,0 | n.d. |
| Treffrin | 516 | 10,0 °f | 12,0 | 0,0104 |
| Tréfumel | 282 | 24,0 °f | 40,0 | 0,0012 |
| Trégastel | 2 524 | 12,0 °f | 23,0 | 0,001 |
| Tréglamus | 1 096 | 9,1 °f | 23,0 | n.d. |
| Trégomeur | 945 | 15,0 °f | 22,0 | 0,0013 |
| Trégonneau | 515 | 11,0 °f | 26,0 | 0,0091 |
| Trégrom | 464 | 15,0 °f | 20,0 | 0,009 |
| Trégueux | 8 450 | 11,0 °f | 16,0 | 0,002 |
| Tréguidel | 630 | 16,0 °f | 9,7 | 0,0024 |
| Tréguier | 2 294 | 19,0 °f | 27,0 | n.d. |
| Trélévern | 1 245 | 19,0 °f | 27,0 | 0,0024 |
| Trélivan | 2 865 | 15,0 °f | 12,0 | 0,0055 |
| Trémargat | 183 | 11,0 °f | 9,7 | 0,0044 |
| Trémel | 409 | 14,0 °f | 21,0 | n.d. |
| Tréméreuc | 729 | 12,0 °f | 24,0 | n.d. |
| Trémeur | 809 | 12,0 °f | 25,0 | n.d. |
| Tréméven | 362 | 18,0 °f | 7,5 | n.d. |
| Trémorel | 1 156 | 13,0 °f | 26,0 | n.d. |
| Trémuson | 2 259 | 15,0 °f | 22,0 | 0,428 |
| Tréogan | 106 | 9,1 °f | 8,0 | n.d. |
| Tressignaux | 670 | 16,0 °f | 9,7 | 0,0024 |
| Trévé | 1 681 | 14,0 °f | 22,0 | 0,0012 |
| Tréveneuc | 813 | 15,0 °f | 23,0 | 0,0062 |
| Trévérec | 228 | 18,0 °f | 7,5 | n.d. |
| Trévou-Tréguignec | 1 603 | 19,0 °f | 27,0 | 0,0024 |
| Trévron | 682 | 15,0 °f | 12,0 | 0,0055 |
| Trézény | 354 | 14,0 °f | 5,9 | 0,0029 |
| Troguéry | 227 | 22,0 °f | 26,0 | 0,0017 |
| Uzel | 1 134 | 14,0 °f | 3,7 | 0,001 |
| Val-d'Arguenon | 2 844 | 13,0 °f | 26,0 | 0,0142 |
| Vildé-Guingalan | 1 304 | 12,0 °f | 25,0 | n.d. |
| Yffiniac | 5 074 | 11,0 °f | 16,0 | 0,002 |
| Yvias | 765 | 17,0 °f | 25,0 | 0,0648 |
| Yvignac-la-Tour | 1 135 | 12,0 °f | 25,0 | n.d. |