Tap water hardness in Finistère
We have published hardness data for 269 cities in Finistère. The median is 12 °fH; the hardest water is in Ouessant (23 °fH), the softest in Île-de-Sein (2.3 °fH).
61 % of these cities have hard or very hard water (over 120 mg/L).
Largest places, hardest first
| °fH | mg/L | ||
|---|---|---|---|
| Plougonvelin | 18 | 180 | very hard |
| Plouarzel | 18 | 180 | very hard |
| Le Conquet | 18 | 180 | very hard |
| Lampaul-Plouarzel | 18 | 180 | very hard |
| Ploumoguer | 18 | 180 | very hard |
| La Forest-Landerneau | 18 | 180 | very hard |
| Le Faou | 18 | 180 | very hard |
| Locmaria-Plouzané | 17.5 | 175 | hard |
| Plougastel-Daoulas | 16.5 | 165 | hard |
| Landéda | 16.5 | 165 | hard |
| Lannilis | 16 | 160 | hard |
| Bourg-Blanc | 16 | 160 | hard |
| Plougasnou | 16 | 160 | hard |
| Pleuven | 16 | 160 | hard |
| Gouesnach | 16 | 160 | hard |
| Plounévez-Lochrist | 16 | 160 | hard |
| Lanmeur | 16 | 160 | hard |
| Clohars-Fouesnant | 16 | 160 | hard |
| Coray | 16 | 160 | hard |
| Plouezoc'h | 16 | 160 | hard |
| Kernilis | 16 | 160 | hard |
| Lesneven | 15 | 150 | hard |
| Plouvien | 15 | 150 | hard |
| Plouescat | 15 | 150 | hard |
| Le Folgoët | 15 | 150 | hard |
| Le Drennec | 15 | 150 | hard |
| Lanrivoaré | 15 | 150 | hard |
| Roscoff | 14.8 | 148 | hard |
| Cléder | 14.5 | 145 | hard |
| Guissény | 14.5 | 145 | hard |
| Porspoder | 14.5 | 145 | hard |
| Landunvez | 14.5 | 145 | hard |
| Morlaix | 14 | 140 | hard |
| Landivisiau | 14 | 140 | hard |
| Crozon | 14 | 140 | hard |
| Saint-Pol-de-Léon | 14 | 140 | hard |
| Plouguerneau | 14 | 140 | hard |
| Ploudalmézeau | 14 | 140 | hard |
| Saint-Martin-des-Champs | 14 | 140 | hard |
| Châteauneuf-du-Faou | 14 | 140 | hard |
| Carantec | 14 | 140 | hard |
| Saint-Yvi | 14 | 140 | hard |
| Camaret-sur-Mer | 14 | 140 | hard |
| Plouénan | 14 | 140 | hard |
| Santec | 14 | 140 | hard |
| Kerlouan | 14 | 140 | hard |
| Plouguin | 14 | 140 | hard |
| Plounéour-Brignogan-plages | 14 | 140 | hard |
| Plouider | 14 | 140 | hard |
| Plougoulm | 14 | 140 | hard |
| Pleyben | 13.5 | 135 | hard |
| Taulé | 13.5 | 135 | hard |
| Quimper | 13 | 130 | hard |
| Ergué-Gabéric | 13 | 130 | hard |
| Plomelin | 13 | 130 | hard |
| Pluguffan | 13 | 130 | hard |
| Pont-de-Buis-lès-Quimerch | 13 | 130 | hard |
| Ploudaniel | 13 | 130 | hard |
| Melgven | 13 | 130 | hard |
| Plouvorn | 13 | 130 | hard |
| Edern | 13 | 130 | hard |
| Lanvéoc | 13 | 130 | hard |
| Telgruc-sur-Mer | 13 | 130 | hard |
| Lampaul-Guimiliau | 13 | 130 | hard |
| Plouzévédé | 13 | 130 | hard |
| Plonévez-Porzay | 13 | 130 | hard |
| Milizac-Guipronvel | 12.5 | 125 | hard |
| Sizun | 12.5 | 125 | hard |
| Bénodet | 12.2 | 122 | hard |
| Cast | 12.2 | 122 | hard |
| Concarneau | 12 | 120 | hard |
| Landerneau | 12 | 120 | hard |
| Plabennec | 12 | 120 | hard |
| Pont-l'Abbé | 12 | 120 | hard |
| Saint-Renan | 12 | 120 | hard |
| Guilers | 12 | 120 | hard |
| Briec | 12 | 120 | hard |
| Penmarch | 12 | 120 | hard |
| Loctudy | 12 | 120 | hard |
| Combrit | 12 | 120 | hard |
| Plomeur | 12 | 120 | hard |
| Saint-Évarzec | 12 | 120 | hard |
| Plobannalec-Lesconil | 12 | 120 | hard |
| Plogonnec | 12 | 120 | hard |
| Plouédern | 12 | 120 | hard |
| Guilvinec | 12 | 120 | hard |
| Treffiagat | 12 | 120 | hard |
| Hôpital-Camfrout | 12 | 120 | hard |
| Logonna-Daoulas | 12 | 120 | hard |
| La Roche-Maurice | 12 | 120 | hard |
| Landrévarzec | 12 | 120 | hard |
| Irvillac | 12 | 120 | hard |
| Le Relecq-Kerhuon | 11.5 | 115 | moderately hard |
| Dirinon | 11.5 | 115 | moderately hard |
| Daoulas | 11.5 | 115 | moderately hard |
| Brest | 11 | 110 | moderately hard |
| Guipavas | 11 | 110 | moderately hard |
| Plouzané | 11 | 110 | moderately hard |
| Gouesnou | 11 | 110 | moderately hard |
| Plonéour-Lanvern | 11 | 110 | moderately hard |
| Plouhinec | 11 | 110 | moderately hard |
| Loperhet | 11 | 110 | moderately hard |
| Bohars | 11 | 110 | moderately hard |
| Pleyber-Christ | 11 | 110 | moderately hard |
| Guiclan | 11 | 110 | moderately hard |
| Plonévez-du-Faou | 11 | 110 | moderately hard |
| Saint-Pabu | 11 | 110 | moderately hard |
| Pencran | 11 | 110 | moderately hard |
| Saint-Thonan | 11 | 110 | moderately hard |
| Saint-Urbain | 11 | 110 | moderately hard |
| Saint-Divy | 11 | 110 | moderately hard |
| Poullan-sur-Mer | 11 | 110 | moderately hard |
| Plomodiern | 10.9 | 109 | moderately hard |
| Châteaulin | 10.7 | 107 | moderately hard |
| Audierne | 10.5 | 105 | moderately hard |
| Hanvec | 10.5 | 105 | moderately hard |
| Fouesnant | 10 | 100 | moderately hard |
| Rédené | 10 | 100 | moderately hard |
| Douarnenez | 9.9 | 99 | moderately hard |
| La Forêt-Fouesnant | 9.9 | 99 | moderately hard |
| Spézet | 9.9 | 99 | moderately hard |
| Rosporden | 9.8 | 98 | moderately hard |
| Carhaix-Plouguer | 9.7 | 97 | moderately hard |
| Dinéault | 9.7 | 97 | moderately hard |
| Pont-Croix | 9.7 | 97 | moderately hard |
| Plozévet | 9.6 | 96 | moderately hard |
| Pouldreuzic | 9.6 | 96 | moderately hard |
| Quimperlé | 9.4 | 94 | moderately hard |
| Moëlan-sur-Mer | 9.3 | 93 | moderately hard |
| Bannalec | 9.2 | 92 | moderately hard |
| Clohars-Carnoët | 9.2 | 92 | moderately hard |
| Elliant | 9.1 | 91 | moderately hard |
| Scaër | 9 | 90 | moderately hard |
| Tréméven | 9 | 90 | moderately hard |
| Riec-sur-Bélon | 8.8 | 88 | moderately hard |
| Saint-Thégonnec Loc-Eguiner | 8.8 | 88 | moderately hard |
| Guengat | 8.8 | 88 | moderately hard |
| Plouigneau | 8.5 | 85 | moderately hard |
| Trégunc | 8.4 | 84 | moderately hard |
| Pont-Aven | 8.4 | 84 | moderately hard |
| Névez | 8.4 | 84 | moderately hard |
| Plogastel-Saint-Germain | 8 | 80 | moderately hard |
| Mellac | 7.6 | 76 | moderately hard |
| Le Trévoux | 7.6 | 76 | moderately hard |
| Huelgoat | 7.5 | 75 | moderately hard |
| Plonéis | 7.4 | 74 | moderately hard |
| Poullaouen | 7.3 | 73 | moderately hard |
| Querrien | 7.1 | 71 | moderately hard |
| Plougonven | 6.3 | 63 | moderately hard |
| Plourin-lès-Morlaix | 5.8 | 58 | soft |
Other places (119)
- Argol 13 °fH
- Arzano 8.9 °fH
- Baye 7.6 °fH
- Berrien 6.3 °fH
- Beuzec-Cap-Sizun 11 °fH
- Bolazec 11.7 °fH
- Botmeur 11 °fH
- Botsorhel 11 °fH
- Brasparts 5.1 °fH
- Brélès 13 °fH
- Brennilis 9.6 °fH
- Cléden-Cap-Sizun 9.4 °fH
- Cléden-Poher 9 °fH
- Coat-Méal 14 °fH
- Collorec 10.2 °fH
- Commana 6.2 °fH
- Confort-Meilars 8.3 °fH
- Garlan 16 °fH
- Gouézec 12.5 °fH
- Goulien 9.4 °fH
- Goulven 14 °fH
- Gourlizon 8 °fH
- Guerlesquin 13 °fH
- Guiler-sur-Goyen 13.5 °fH
- Guilligomarc'h 11 °fH
- Guimaëc 16 °fH
- Guimiliau 6.6 °fH
- Henvic 13.5 °fH
- Île-de-Batz 14.2 °fH
- Île-de-Sein 2.3 °fH
- Île-Molène 13.5 °fH
- Île-Tudy 12 °fH
- Kergloff 8 °fH
- Kerlaz 13 °fH
- Kernouës 15 °fH
- Kersaint-Plabennec 9.9 °fH
- La Feuillée 11 °fH
- La Martyre 12 °fH
- Lampaul-Ploudalmézeau 11 °fH
- Lanarvily 16 °fH
- Landeleau 9 °fH
- Landévennec 13 °fH
- Landudal 13 °fH
- Landudec 13.5 °fH
- Langolen 9.6 °fH
- Lanildut 13.8 °fH
- Lannéanou 8.6 °fH
- Lannédern 15 °fH
- Laz 15 °fH
- Le Cloître-Pleyben 13 °fH
- Le Cloître-Saint-Thégonnec 7.6 °fH
- Le Juch 9.1 °fH
- Le Tréhou 11 °fH
- Lennon 14 °fH
- Leuhan 16 °fH
- Loc-Brévalaire 15 °fH
- Loc-Eguiner 13 °fH
- Locmélar 14 °fH
- Locquénolé 13.5 °fH
- Locquirec 15.8 °fH
- Locronan 13 °fH
- Locunolé 9.3 °fH
- Lopérec 7.3 °fH
- Loqueffret 15 °fH
- Lothey 13 °fH
- Mahalon 13 °fH
- Mespaul 14 °fH
- Motreff 14 °fH
- Ouessant 23 °fH
- Peumerit 8 °fH
- Ploéven 13 °fH
- Plogoff 10 °fH
- Ploudiry 12 °fH
- Plouégat-Guérand 16 °fH
- Plouégat-Moysan 13 °fH
- Plounéour-Ménez 10.5 °fH
- Plounévézel 8.9 °fH
- Plourin 11.2 °fH
- Plouyé 12 °fH
- Plovan 9.6 °fH
- Port-Launay 13 °fH
- Pouldergat 9.1 °fH
- Primelin 10 °fH
- Quéménéven 8.9 °fH
- Roscanvel 14 °fH
- Rosnoën 14 °fH
- Saint-Coulitz 13 °fH
- Saint-Eloy 10 °fH
- Saint-Frégant 14.5 °fH
- Saint-Goazec 12 °fH
- Saint-Hernin 11.4 °fH
- Saint-Jean-du-Doigt 16 °fH
- Saint-Jean-Trolimon 12 °fH
- Saint-Méen 13 °fH
- Saint-Nic 10 °fH
- Saint-Rivoal 10.2 °fH
- Saint-Sauveur 14 °fH
- Saint-Ségal 13 °fH
- Saint-Thois 15 °fH
- Saint-Thurien 6.1 °fH
- Saint-Vougay 13 °fH
- Sainte-Sève 11 °fH
- Scrignac 14 °fH
- Sibiril 14.5 °fH
- Tourch 12 °fH
- Trébabu 18 °fH
- Tréflaouénan 15 °fH
- Tréflévénez 14 °fH
- Tréflez 14 °fH
- Trégarantec 13 °fH
- Trégarvan 12.5 °fH
- Tréglonou 14 °fH
- Trégourez 13.5 °fH
- Tréguennec 12 °fH
- Trémaouézan 12 °fH
- Tréméoc 12 °fH
- Tréogat 9.6 °fH
- Tréouergat 15 °fH
- Trézilidé 13 °fH