Qualité de l’eau du robinet du Finistère (29)
277 communes du Finistère, 933 455 habitants. L’eau y est en moyenne douce (12,4 °f), avec 20,7 mg/L de nitrates en moyenne communale. Les PFAS ont été recherchés dans l’eau distribuée de 154 communes ; 154 en quantifient au moins une trace, et 4 dépassent la limite.
Communes
277
documentées par le contrôle sanitaire
Dureté moyenne
12,4
°f, eau douce
Nitrates moyens
20,7
mg/L, limite 50 mg/L
PFAS au-dessus de la limite
4
communes, sur 154 analysées
Les eaux les plus dures du Finistère
| Ouessant | 21,0 | |
|---|---|---|
| Bodilis | 18,0 | |
| Le Faou | 18,0 | |
| La Forest-Landerneau | 18,0 | |
| Lanhouarneau | 18,0 | |
| Lanneuffret | 18,0 | |
| Plougar | 18,0 | |
| Plougastel-Daoulas | 18,0 | |
| Plougourvest | 18,0 | |
| Plounéventer | 18,0 |
À l’inverse, les plus douces
| Île-de-Sein | 0,7 | |
|---|---|---|
| La Feuillée | 3,2 | |
| Huelgoat | 3,2 | |
| Leuhan | 4,7 | |
| Saint-Nic | 4,8 | |
| Saint-Thurien | 4,9 | |
| Le Cloître-Saint-Thégonnec | 5,5 | |
| Plourin-lès-Morlaix | 5,5 | |
| Plomodiern | 5,6 | |
| Commana | 6,0 |
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
| Lanarvily | 44,0 | |
|---|---|---|
| Loc-Brévalaire | 44,0 | |
| Briec | 41,0 | |
| Cast | 41,0 | |
| Guengat | 41,0 | |
| Plogonnec | 41,0 | |
| Saint-Coulitz | 41,0 | |
| Plounéour-Brignogan-plages | 39,0 | |
| Goulven | 39,0 | |
| Guissény | 39,0 |
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 |
|---|---|---|
| Châteauneuf-du-Faou | 0,1413 µg/L | 141 % |
| Collorec | 0,1413 µg/L | 141 % |
| Loqueffret | 0,1413 µg/L | 141 % |
| Plonévez-du-Faou | 0,1413 µg/L | 141 % |
| Carhaix-Plouguer | 0,0503 µg/L | 50 % |
| Poullaouen | 0,0503 µg/L | 50 % |
| Brélès | 0,0437 µg/L | 44 % |
| Plourin | 0,0437 µg/L | 44 % |
| Brest | 0,0375 µg/L | 37 % |
| Guipavas | 0,0375 µg/L | 37 % |
| Plouzané | 0,0375 µg/L | 37 % |
| Le Relecq-Kerhuon | 0,0375 µg/L | 37 % |
| Beuzec-Cap-Sizun | 0,0353 µg/L | 35 % |
| Cléden-Cap-Sizun | 0,0353 µg/L | 35 % |
| Goulien | 0,0353 µg/L | 35 % |
| Poullan-sur-Mer | 0,0353 µg/L | 35 % |
| La Feuillée | 0,0303 µg/L | 30 % |
| Huelgoat | 0,0303 µg/L | 30 % |
| Fouesnant | 0,0291 µg/L | 29 % |
| Plougastel-Daoulas | 0,0276 µg/L | 28 % |
| Plounéour-Ménez | 0,0224 µg/L | 22 % |
| Cléden-Poher | 0,0208 µg/L | 21 % |
| Landeleau | 0,0208 µg/L | 21 % |
| Ouessant | 0,0196 µg/L | 20 % |
| Guilers | 0,018 µg/L | 18 % |
| Trégarvan | 0,0167 µg/L | 17 % |
| Lopérec | 0,0155 µg/L | 16 % |
| Saint-Renan | 0,0131 µg/L | 13 % |
| Plounévézel | 0,0114 µg/L | 11 % |
| Bohars | 0,0108 µg/L | 11 % |
| Gouesnou | 0,0108 µg/L | 11 % |
| Saint-Évarzec | 0,0096 µg/L | 10 % |
| Tourch | 0,0093 µg/L | 9 % |
| Landunvez | 0,0088 µg/L | 9 % |
| Lanildut | 0,0088 µg/L | 9 % |
| Motreff | 0,0088 µg/L | 9 % |
| Porspoder | 0,0088 µg/L | 9 % |
| Plouénan | 0,0076 µg/L | 8 % |
| Plouzévédé | 0,0076 µg/L | 8 % |
| Saint-Vougay | 0,0076 µg/L | 8 % |
Voir la carte des PFAS du Finistère, rejets industriels compris →
Les 277 communes du Finistère
| Commune | Habitants | Dureté | Nitrates | PFAS |
|---|---|---|---|---|
| Argol | 1 065 | 14,0 °f | 11,0 | 0,0016 |
| Arzano | 1 441 | 9,0 °f | 15,0 | 0,0011 |
| Audierne | 3 727 | 12,0 °f | 26,0 | 0,0046 |
| Bannalec | 5 725 | 8,7 °f | 22,0 | 0,0054 |
| Baye | 1 369 | 7,2 °f | 18,0 | 0,0019 |
| Bénodet | 3 849 | 16,0 °f | 15,0 | 0,0014 |
| Berrien | 943 | 6,3 °f | 3,4 | n.d. |
| Beuzec-Cap-Sizun | 1 008 | 9,6 °f | 32,0 | 0,0353 |
| Bodilis | 1 723 | 18,0 °f | 35,0 | 0,0035 |
| Bohars | 3 727 | 13,0 °f | 25,0 | 0,0108 |
| Bolazec | 168 | 13,0 °f | 11,0 | 0,0012 |
| Botmeur | 224 | 11,0 °f | 3,6 | n.d. |
| Botsorhel | 425 | 15,0 °f | 26,0 | n.d. |
| Bourg-Blanc | 3 573 | 15,0 °f | 17,0 | n.d. |
| Brasparts | 1 067 | 11,0 °f | 9,0 | n.d. |
| Brélès | 868 | 12,0 °f | 23,0 | 0,0437 |
| Brennilis | 454 | 9,9 °f | 10,0 | 0,0061 |
| Brest | 142 346 | 13,0 °f | 25,0 | 0,0375 |
| Briec | 5 816 | 12,0 °f | 41,0 | 0,0016 |
| Camaret-sur-Mer | 2 494 | 14,0 °f | 11,0 | 0,0041 |
| Carantec | 3 272 | 13,0 °f | 24,0 | n.d. |
| Carhaix-Plouguer | 7 412 | 12,0 °f | 6,3 | 0,0503 |
| Cast | 1 570 | 12,0 °f | 41,0 | 0,0016 |
| Châteaulin | 5 085 | 14,0 °f | 11,0 | 0,0016 |
| Châteauneuf-du-Faou | 3 651 | 7,7 °f | 2,7 | 0,1413 |
| Cléden-Cap-Sizun | 916 | 9,6 °f | 32,0 | 0,0353 |
| Cléden-Poher | 1 130 | 9,1 °f | 6,2 | 0,0208 |
| Cléder | 3 584 | 13,0 °f | 24,0 | n.d. |
| Clohars-Carnoët | 4 708 | 9,9 °f | 18,0 | n.d. |
| Clohars-Fouesnant | 2 264 | 16,0 °f | 15,0 | 0,0014 |
| Coat-Méal | 1 133 | 14,0 °f | 35,0 | n.d. |
| Collorec | 588 | 7,7 °f | 2,7 | 0,1413 |
| Combrit | 4 265 | 10,0 °f | 14,0 | n.d. |
| Commana | 983 | 6,0 °f | 5,5 | n.d. |
| Concarneau | 20 845 | 12,0 °f | 26,0 | 0,0016 |
| Confort-Meilars | 861 | 7,8 °f | 26,0 | n.d. |
| Coray | 1 856 | 16,0 °f | 10,0 | 0,0029 |
| Crozon | 7 499 | 14,0 °f | 11,0 | 0,0016 |
| Daoulas | 1 864 | 13,0 °f | 25,0 | 0,0012 |
| Dinéault | 1 853 | 14,0 °f | 11,0 | 0,0016 |
| Dirinon | 2 188 | 13,0 °f | 25,0 | 0,0012 |
| Douarnenez | 14 068 | 10,0 °f | 19,0 | 0,001 |
| Edern | 2 186 | 14,0 °f | 9,9 | 0,0041 |
| Elliant | 3 427 | 8,4 °f | 19,0 | 0,0022 |
| Ergué-Gabéric | 8 606 | 14,0 °f | 17,0 | 0,0017 |
| Fouesnant | 10 436 | 12,0 °f | 7,1 | 0,0291 |
| Garlan | 1 043 | 17,0 °f | 23,0 | n.d. |
| Gouesnach | 2 836 | 16,0 °f | 15,0 | 0,0014 |
| Gouesnou | 6 501 | 13,0 °f | 25,0 | 0,0108 |
| Gouézec | 1 111 | 10,0 °f | 13,0 | n.d. |
| Goulien | 446 | 9,6 °f | 32,0 | 0,0353 |
| Goulven | 432 | 13,0 °f | 39,0 | n.d. |
| Gourlizon | 949 | 8,2 °f | 15,0 | n.d. |
| Guengat | 1 846 | 12,0 °f | 41,0 | 0,0016 |
| Guerlesquin | 1 285 | 15,0 °f | 18,0 | n.d. |
| Guiclan | 2 585 | 12,0 °f | 26,0 | 0,0035 |
| Guiler-sur-Goyen | 520 | 14,0 °f | 33,0 | 0,0019 |
| Guilers | 8 268 | 12,0 °f | 21,0 | 0,018 |
| Guilligomarc'h | 803 | 12,0 °f | 34,0 | n.d. |
| Guilvinec | 2 669 | 10,0 °f | 14,0 | n.d. |
| Guimaëc | 982 | 17,0 °f | 23,0 | n.d. |
| Guimiliau | 994 | 6,0 °f | 5,5 | n.d. |
| Guipavas | 15 538 | 13,0 °f | 25,0 | 0,0375 |
| Guissény | 1 979 | 13,0 °f | 39,0 | n.d. |
| Hanvec | 2 025 | 8,4 °f | 9,9 | 0,0071 |
| Henvic | 1 181 | 13,0 °f | 24,0 | n.d. |
| Hôpital-Camfrout | 2 215 | 13,0 °f | 25,0 | 0,0012 |
| Huelgoat | 1 440 | 3,2 °f | 5,0 | 0,0303 |
| Île-de-Batz | 458 | 13,0 °f | 24,0 | n.d. |
| Île-de-Sein | 263 | 0,7 °f | 0,0 | 0,0029 |
| Île-Molène | 176 | 14,0 °f | 11,0 | 0,0056 |
| Île-Tudy | 742 | 10,0 °f | 14,0 | n.d. |
| Irvillac | 1 411 | 15,0 °f | 11,0 | 0,0014 |
| Kergloff | 897 | 12,0 °f | 3,0 | n.d. |
| Kerlaz | 805 | 16,0 °f | 13,0 | n.d. |
| Kerlouan | 1 999 | 13,0 °f | 39,0 | n.d. |
| Kernilis | 1 407 | 14,0 °f | 35,0 | 0,0016 |
| Kernouës | 665 | 15,0 °f | 28,0 | 0,0026 |
| Kersaint-Plabennec | 1 571 | 9,5 °f | 27,0 | 0,0011 |
| La Feuillée | 677 | 3,2 °f | 5,0 | 0,0303 |
| La Forest-Landerneau | 2 018 | 18,0 °f | 16,0 | n.d. |
| La Forêt-Fouesnant | 3 508 | 9,9 °f | 10,0 | 0,0032 |
| La Martyre | 751 | 13,0 °f | 14,0 | n.d. |
| La Roche-Maurice | 1 893 | 13,0 °f | 25,0 | 0,0012 |
| Lampaul-Guimiliau | 2 032 | 13,0 °f | 14,0 | 0,0058 |
| Lampaul-Plouarzel | 2 221 | 17,0 °f | 27,0 | n.d. |
| Lampaul-Ploudalmézeau | 816 | 11,0 °f | 37,0 | n.d. |
| Lanarvily | 401 | 15,0 °f | 44,0 | n.d. |
| Landéda | 3 702 | 14,0 °f | 37,0 | n.d. |
| Landeleau | 993 | 9,1 °f | 6,2 | 0,0208 |
| Landerneau | 16 363 | 13,0 °f | 25,0 | 0,0012 |
| Landévennec | 330 | 14,0 °f | 11,0 | 0,0016 |
| Landivisiau | 9 426 | 13,0 °f | 14,0 | n.d. |
| Landrévarzec | 1 882 | 13,0 °f | 13,0 | n.d. |
| Landudal | 930 | 14,0 °f | 35,0 | n.d. |
| Landudec | 1 459 | 14,0 °f | 33,0 | 0,0019 |
| Landunvez | 1 579 | 15,0 °f | 31,0 | 0,0088 |
| Langolen | 836 | 11,0 °f | 18,0 | n.d. |
| Lanhouarneau | 1 282 | 18,0 °f | 35,0 | 0,0035 |
| Lanildut | 1 013 | 15,0 °f | 31,0 | 0,0088 |
| Lanmeur | 2 387 | 17,0 °f | 23,0 | n.d. |
| Lannéanou | 342 | 9,7 °f | 17,0 | 0,0044 |
| Lannédern | 321 | 16,0 °f | 3,2 | n.d. |
| Lanneuffret | 158 | 18,0 °f | 35,0 | 0,0035 |
| Lannilis | 5 709 | 15,0 °f | 31,0 | n.d. |
| Lanrivoaré | 1 551 | 15,0 °f | 39,0 | n.d. |
| Lanvéoc | 2 044 | 14,0 °f | 11,0 | 0,0016 |
| Laz | 685 | 16,0 °f | 8,7 | 0,0023 |
| Le Cloître-Pleyben | 502 | 16,0 °f | 6,5 | n.d. |
| Le Cloître-Saint-Thégonnec | 641 | 5,5 °f | 27,0 | 0,0016 |
| Le Conquet | 2 835 | 17,0 °f | 27,0 | n.d. |
| Le Drennec | 1 896 | 13,0 °f | 33,0 | n.d. |
| Le Faou | 1 911 | 18,0 °f | 9,5 | 0,0025 |
| Le Folgoët | 3 315 | 15,0 °f | 28,0 | 0,0026 |
| Le Juch | 765 | 8,4 °f | 17,0 | n.d. |
| Le Relecq-Kerhuon | 11 897 | 13,0 °f | 25,0 | 0,0375 |
| Le Tréhou | 633 | 13,0 °f | 25,0 | 0,0012 |
| Le Trévoux | 1 652 | 7,2 °f | 18,0 | 0,0019 |
| Lennon | 812 | 14,0 °f | 15,0 | n.d. |
| Lesneven | 7 566 | 15,0 °f | 28,0 | 0,0026 |
| Leuhan | 846 | 4,7 °f | 21,0 | 0,0042 |
| Loc-Brévalaire | 210 | 15,0 °f | 44,0 | n.d. |
| Loc-Eguiner | 376 | 13,0 °f | 14,0 | n.d. |
| Locmaria-Plouzané | 5 130 | 17,0 °f | 27,0 | n.d. |
| Locmélar | 487 | 13,0 °f | 14,0 | 0,0058 |
| Locquénolé | 790 | 13,0 °f | 24,0 | n.d. |
| Locquirec | 1 555 | 17,0 °f | 23,0 | n.d. |
| Locronan | 829 | 14,0 °f | 11,0 | n.d. |
| Loctudy | 4 075 | 10,0 °f | 14,0 | n.d. |
| Locunolé | 1 177 | 15,0 °f | 21,0 | n.d. |
| Logonna-Daoulas | 2 130 | 15,0 °f | 31,0 | 0,0041 |
| Lopérec | 828 | 11,0 °f | 8,8 | 0,0155 |
| Loperhet | 3 959 | 11,0 °f | 14,0 | 0,0055 |
| Loqueffret | 336 | 7,7 °f | 2,7 | 0,1413 |
| Lothey | 424 | 12,0 °f | 17,0 | n.d. |
| Mahalon | 1 021 | 14,0 °f | 33,0 | 0,0019 |
| Melgven | 3 371 | 12,0 °f | 17,0 | 0,0015 |
| Mellac | 3 404 | 7,2 °f | 18,0 | 0,0019 |
| Mespaul | 946 | 13,0 °f | 24,0 | 0,0045 |
| Milizac-Guipronvel | 4 816 | 7,2 °f | 20,0 | n.d. |
| Moëlan-sur-Mer | 6 749 | 9,4 °f | 19,0 | 0,0012 |
| Morlaix | 15 194 | 17,0 °f | 22,0 | n.d. |
| Motreff | 654 | 14,0 °f | 4,6 | 0,0088 |
| Névez | 2 795 | 9,3 °f | 19,0 | n.d. |
| Ouessant | 860 | 21,0 °f | 0,7 | 0,0196 |
| Pencran | 2 234 | 12,0 °f | 27,0 | n.d. |
| Penmarch | 5 508 | 10,0 °f | 14,0 | n.d. |
| Peumerit | 917 | 8,2 °f | 15,0 | n.d. |
| Plabennec | 8 686 | 11,0 °f | 29,0 | 0,003 |
| Pleuven | 3 311 | 16,0 °f | 15,0 | 0,0014 |
| Pleyben | 3 692 | 10,0 °f | 26,0 | 0,0013 |
| Pleyber-Christ | 3 166 | 12,0 °f | 26,0 | 0,0035 |
| Plobannalec-Lesconil | 3 718 | 10,0 °f | 14,0 | n.d. |
| Ploéven | 550 | 14,0 °f | 12,0 | 0,0013 |
| Plogastel-Saint-Germain | 2 024 | 8,2 °f | 15,0 | n.d. |
| Plogoff | 1 131 | 12,0 °f | 26,0 | 0,0046 |
| Plogonnec | 3 236 | 12,0 °f | 41,0 | 0,0016 |
| Plomelin | 4 239 | 14,0 °f | 6,8 | n.d. |
| Plomeur | 3 904 | 10,0 °f | 14,0 | n.d. |
| Plomodiern | 2 282 | 5,6 °f | 11,0 | 0,0026 |
| Plonéis | 2 409 | 7,3 °f | 22,0 | n.d. |
| Plonéour-Lanvern | 6 452 | 10,0 °f | 14,0 | 0,0042 |
| Plonévez-du-Faou | 2 160 | 7,7 °f | 2,7 | 0,1413 |
| Plonévez-Porzay | 1 781 | 14,0 °f | 12,0 | 0,0013 |
| Plouarzel | 4 029 | 17,0 °f | 27,0 | n.d. |
| Ploudalmézeau | 6 522 | 14,0 °f | 38,0 | n.d. |
| Ploudaniel | 3 732 | 14,0 °f | 28,0 | n.d. |
| Ploudiry | 872 | 13,0 °f | 14,0 | n.d. |
| Plouédern | 3 103 | 13,0 °f | 25,0 | 0,0012 |
| Plouégat-Guérand | 1 050 | 17,0 °f | 23,0 | n.d. |
| Plouégat-Moysan | 717 | 15,0 °f | 18,0 | n.d. |
| Plouénan | 2 610 | 13,0 °f | 14,0 | 0,0076 |
| Plouescat | 3 554 | 13,0 °f | 24,0 | n.d. |
| Plouezoc'h | 1 646 | 17,0 °f | 23,0 | n.d. |
| Plougar | 789 | 18,0 °f | 35,0 | 0,0035 |
| Plougasnou | 3 192 | 17,0 °f | 23,0 | n.d. |
| Plougastel-Daoulas | 13 434 | 18,0 °f | 22,0 | 0,0276 |
| Plougonvelin | 4 521 | 17,0 °f | 27,0 | n.d. |
| Plougonven | 3 382 | 6,6 °f | 26,0 | 0,0044 |
| Plougoulm | 1 755 | 13,0 °f | 24,0 | 0,0045 |
| Plougourvest | 1 522 | 18,0 °f | 35,0 | 0,0035 |
| Plouguerneau | 6 755 | 14,0 °f | 37,0 | n.d. |
| Plouguin | 2 268 | 14,0 °f | 34,0 | n.d. |
| Plouhinec | 3 919 | 12,0 °f | 26,0 | 0,0046 |
| Plouider | 1 809 | 13,0 °f | 39,0 | n.d. |
| Plouigneau | 5 014 | 6,6 °f | 26,0 | n.d. |
| Ploumoguer | 2 074 | 17,0 °f | 27,0 | n.d. |
| Plounéour-Brignogan-plages | 1 972 | 13,0 °f | 39,0 | n.d. |
| Plounéour-Ménez | 1 297 | 12,0 °f | 5,8 | 0,0224 |
| Plounéventer | 2 251 | 18,0 °f | 35,0 | 0,0035 |
| Plounévez-Lochrist | 2 281 | 18,0 °f | 35,0 | 0,0035 |
| Plounévézel | 1 157 | 15,0 °f | 14,0 | 0,0114 |
| Plourin | 1 268 | 12,0 °f | 23,0 | 0,0437 |
| Plourin-lès-Morlaix | 4 548 | 5,5 °f | 27,0 | n.d. |
| Plouvien | 3 968 | 15,0 °f | 31,0 | n.d. |
| Plouvorn | 2 916 | 13,0 °f | 22,0 | n.d. |
| Plouyé | 687 | 7,3 °f | 12,0 | n.d. |
| Plouzané | 13 567 | 13,0 °f | 25,0 | 0,0375 |
| Plouzévédé | 1 897 | 13,0 °f | 14,0 | 0,0076 |
| Plovan | 677 | 9,9 °f | 34,0 | n.d. |
| Plozévet | 2 984 | 9,9 °f | 34,0 | n.d. |
| Pluguffan | 4 223 | 14,0 °f | 19,0 | n.d. |
| Pont-Aven | 2 777 | 9,3 °f | 19,0 | 0,0012 |
| Pont-Croix | 1 669 | 12,0 °f | 26,0 | 0,0046 |
| Pont-de-Buis-lès-Quimerch | 3 663 | 12,0 °f | 18,0 | 0,0016 |
| Pont-l'Abbé | 8 484 | 10,0 °f | 14,0 | 0,0042 |
| Porspoder | 1 753 | 15,0 °f | 31,0 | 0,0088 |
| Port-Launay | 404 | 15,0 °f | 11,0 | n.d. |
| Pouldergat | 1 213 | 8,4 °f | 17,0 | n.d. |
| Pouldreuzic | 2 119 | 9,9 °f | 34,0 | n.d. |
| Poullan-sur-Mer | 1 453 | 9,6 °f | 32,0 | 0,0353 |
| Poullaouen | 1 470 | 13,0 °f | 6,9 | 0,0503 |
| Primelin | 650 | 12,0 °f | 26,0 | 0,0046 |
| Quéménéven | 1 119 | 14,0 °f | 9,9 | 0,0041 |
| Querrien | 1 645 | 15,0 °f | 21,0 | n.d. |
| Quimper | 64 385 | 12,0 °f | 21,0 | 0,0029 |
| Quimperlé | 12 469 | 9,4 °f | 19,0 | 0,0012 |
| Rédené | 3 043 | 8,9 °f | 34,0 | 0,006 |
| Riec-sur-Bélon | 4 376 | 11,0 °f | 22,0 | n.d. |
| Roscanvel | 855 | 14,0 °f | 11,0 | 0,0041 |
| Roscoff | 3 334 | 13,0 °f | 24,0 | 0,0045 |
| Rosnoën | 1 012 | 14,0 °f | 8,6 | 0,0022 |
| Rosporden | 7 550 | 8,4 °f | 19,0 | 0,0022 |
| Saint-Coulitz | 475 | 12,0 °f | 41,0 | 0,0016 |
| Saint-Derrien | 861 | 18,0 °f | 35,0 | 0,0035 |
| Saint-Divy | 1 605 | 9,5 °f | 27,0 | 0,0011 |
| Saint-Eloy | 220 | 9,6 °f | 2,8 | n.d. |
| Saint-Évarzec | 3 574 | 14,0 °f | 10,0 | 0,0096 |
| Saint-Frégant | 874 | 13,0 °f | 39,0 | n.d. |
| Saint-Goazec | 739 | 13,0 °f | 2,0 | 0,0012 |
| Saint-Hernin | 753 | 10,0 °f | 3,1 | 0,0023 |
| Saint-Jean-du-Doigt | 692 | 17,0 °f | 23,0 | n.d. |
| Saint-Jean-Trolimon | 997 | 10,0 °f | 14,0 | n.d. |
| Saint-Martin-des-Champs | 4 773 | 17,0 °f | 22,0 | n.d. |
| Saint-Méen | 942 | 14,0 °f | 28,0 | n.d. |
| Saint-Nic | 753 | 4,8 °f | 2,9 | n.d. |
| Saint-Pabu | 2 087 | 11,0 °f | 37,0 | n.d. |
| Saint-Pol-de-Léon | 6 941 | 13,0 °f | 24,0 | n.d. |
| Saint-Renan | 8 577 | 12,0 °f | 22,0 | 0,0131 |
| Saint-Rivoal | 223 | 8,5 °f | 5,5 | n.d. |
| Saint-Sauveur | 849 | 16,0 °f | 22,0 | n.d. |
| Saint-Ségal | 1 182 | 15,0 °f | 20,0 | 0,0017 |
| Saint-Servais | 784 | 18,0 °f | 35,0 | 0,0035 |
| Saint-Thégonnec Loc-Eguiner | 3 148 | 12,0 °f | 26,0 | 0,0035 |
| Saint-Thois | 703 | 15,0 °f | 7,6 | n.d. |
| Saint-Thonan | 1 956 | 9,5 °f | 27,0 | 0,0011 |
| Saint-Thurien | 1 000 | 4,9 °f | 18,0 | 0,0024 |
| Saint-Urbain | 1 670 | 7,1 °f | 13,0 | n.d. |
| Saint-Vougay | 873 | 13,0 °f | 14,0 | 0,0076 |
| Saint-Yvi | 3 431 | 14,0 °f | 14,0 | 0,0025 |
| Sainte-Sève | 1 077 | 12,0 °f | 26,0 | 0,0035 |
| Santec | 2 454 | 13,0 °f | 24,0 | 0,0045 |
| Scaër | 5 178 | 12,0 °f | 20,0 | 0,0051 |
| Scrignac | 816 | 14,0 °f | 11,0 | 0,001 |
| Sibiril | 1 143 | 13,0 °f | 24,0 | n.d. |
| Sizun | 2 325 | 7,6 °f | 10,0 | n.d. |
| Spézet | 1 774 | 10,0 °f | 3,1 | 0,0023 |
| Taulé | 2 914 | 13,0 °f | 24,0 | n.d. |
| Telgruc-sur-Mer | 2 167 | 14,0 °f | 11,0 | 0,0016 |
| Tourch | 1 002 | 13,0 °f | 30,0 | 0,0093 |
| Trébabu | 368 | 17,0 °f | 27,0 | n.d. |
| Treffiagat | 2 429 | 10,0 °f | 14,0 | n.d. |
| Tréflaouénan | 518 | 13,0 °f | 14,0 | 0,0076 |
| Tréflévénez | 260 | 14,0 °f | 19,0 | n.d. |
| Tréflez | 991 | 14,0 °f | 35,0 | 0,0016 |
| Trégarantec | 634 | 14,0 °f | 28,0 | n.d. |
| Trégarvan | 134 | 6,8 °f | 1,2 | 0,0167 |
| Tréglonou | 689 | 14,0 °f | 36,0 | n.d. |
| Trégourez | 947 | 15,0 °f | 22,0 | n.d. |
| Tréguennec | 311 | 10,0 °f | 14,0 | n.d. |
| Trégunc | 7 148 | 9,3 °f | 19,0 | n.d. |
| Trémaouézan | 483 | 13,0 °f | 25,0 | 0,0012 |
| Tréméoc | 1 503 | 10,0 °f | 14,0 | n.d. |
| Tréméven | 2 402 | 9,3 °f | 18,0 | n.d. |
| Tréogat | 573 | 9,9 °f | 34,0 | n.d. |
| Tréouergat | 323 | 15,0 °f | 39,0 | n.d. |
| Trézilidé | 405 | 13,0 °f | 14,0 | 0,0076 |