Tap water hardness in Isère
We have published hardness data for 502 cities in Isère. The median is 25.1 °fH; the hardest water is in Saint-Just-de-Claix (38.4 °fH), the softest in Le Haut-Bréda (2.6 °fH).
90 % of these cities have hard or very hard water (over 120 mg/L).
Largest places, hardest first
| °fH | mg/L | ||
|---|---|---|---|
| Chanas | 33.4 | 334 | very hard |
| Valencin | 32.8 | 328 | very hard |
| Salaise-sur-Sanne | 32.3 | 323 | very hard |
| Sablons | 32.3 | 323 | very hard |
| Heyrieux | 32.2 | 322 | very hard |
| Saint-Victor-de-Cessieu | 32.2 | 322 | very hard |
| Saint-Marcellin | 31.7 | 317 | very hard |
| Aoste | 31.6 | 316 | very hard |
| Saint-Didier-de-la-Tour | 31.5 | 315 | very hard |
| Saint-Maurice-l'Exil | 31.2 | 312 | very hard |
| Morestel | 31 | 310 | very hard |
| Roussillon | 30.9 | 309 | very hard |
| Le Péage-de-Roussillon | 30.9 | 309 | very hard |
| Saint-Sauveur | 30.9 | 309 | very hard |
| La Murette | 30.6 | 306 | very hard |
| Saint-Savin | 30.3 | 303 | very hard |
| Diémoz | 30.3 | 303 | very hard |
| Frontonas | 30.3 | 303 | very hard |
| Saint-Georges-d'Espéranche | 30.2 | 302 | very hard |
| Saint-Clair-de-la-Tour | 30.1 | 301 | very hard |
| L'Isle-d'Abeau | 29.9 | 299 | very hard |
| Saint-Alban-de-Roche | 29.9 | 299 | very hard |
| La Tour-du-Pin | 29.7 | 297 | very hard |
| Chatte | 29.7 | 297 | very hard |
| Goncelin | 29.6 | 296 | very hard |
| Saint-André-le-Gaz | 29.5 | 295 | very hard |
| Vienne | 29.3 | 293 | very hard |
| Bourgoin-Jallieu | 29.3 | 293 | very hard |
| Nivolas-Vermelle | 29.3 | 293 | very hard |
| Chuzelles | 29.3 | 293 | very hard |
| Seyssuel | 29.3 | 293 | very hard |
| Serpaize | 29.3 | 293 | very hard |
| Saint-Chef | 29.1 | 291 | very hard |
| Saint-Geoire-en-Valdaine | 29.1 | 291 | very hard |
| Ruy-Montceau | 29 | 290 | very hard |
| La Bâtie-Montgascon | 29 | 290 | very hard |
| Rives | 28.9 | 289 | very hard |
| Les Abrets en Dauphiné | 28.7 | 287 | very hard |
| Dolomieu | 28.6 | 286 | very hard |
| Cessieu | 28.6 | 286 | very hard |
| Roche | 28.6 | 286 | very hard |
| La Verpillière | 28.5 | 285 | very hard |
| Trept | 28.5 | 285 | very hard |
| Pont-Évêque | 28.4 | 284 | very hard |
| Saint-Georges-de-Commiers | 28.4 | 284 | very hard |
| Châtonnay | 28.4 | 284 | very hard |
| Vézeronce-Curtin | 28.4 | 284 | very hard |
| Villages du Lac de Paladru | 28.3 | 283 | very hard |
| Villefontaine | 28.2 | 282 | very hard |
| Saint-Quentin-Fallavier | 28.2 | 282 | very hard |
| Saint-Jean-de-Bournay | 28.2 | 282 | very hard |
| Vaulx-Milieu | 28.2 | 282 | very hard |
| Saint-Just-Chaleyssin | 28.1 | 281 | very hard |
| Luzinay | 28.1 | 281 | very hard |
| Les Avenières Veyrins-Thuellin | 27.9 | 279 | very hard |
| Estrablin | 27.9 | 279 | very hard |
| Le Pont-de-Beauvoisin | 27.8 | 278 | very hard |
| Apprieu | 27.8 | 278 | very hard |
| Moirans | 27.6 | 276 | very hard |
| Eyzin-Pinet | 27.4 | 274 | very hard |
| Renage | 27.3 | 273 | very hard |
| Septème | 27.3 | 273 | very hard |
| La Côte-Saint-André | 27.2 | 272 | very hard |
| Porte-des-Bonnevaux | 27.2 | 272 | very hard |
| Izeaux | 27.1 | 271 | very hard |
| Charavines | 27.1 | 271 | very hard |
| Corbelin | 27 | 270 | very hard |
| Tignieu-Jameyzieu | 26.9 | 269 | very hard |
| Saint-Romain-de-Jalionas | 26.9 | 269 | very hard |
| Montalieu-Vercieu | 26.8 | 268 | very hard |
| Les Côtes-d'Arey | 26.7 | 267 | very hard |
| Tullins | 26.6 | 266 | very hard |
| Pontcharra | 26.6 | 266 | very hard |
| Crémieu | 26.5 | 265 | very hard |
| Jardin | 26.4 | 264 | very hard |
| Le Touvet | 26.2 | 262 | very hard |
| Chirens | 26.2 | 262 | very hard |
| Saint-Laurent-du-Pont | 26.1 | 261 | very hard |
| La Buisse | 26.1 | 261 | very hard |
| Vinay | 25.9 | 259 | very hard |
| Saint-Hilaire-du-Rosier | 25.6 | 256 | very hard |
| Châbons | 25.2 | 252 | very hard |
| Saint-Jean-de-Moirans | 25.1 | 251 | very hard |
| Chasse-sur-Rhône | 24.8 | 248 | very hard |
| Seyssins | 24.6 | 246 | very hard |
| Coublevie | 24.6 | 246 | very hard |
| Saint-Étienne-de-Crossey | 23.9 | 239 | very hard |
| Saint-Clair-du-Rhône | 23.7 | 237 | very hard |
| Les Roches-de-Condrieu | 23.7 | 237 | very hard |
| Satolas-et-Bonce | 23.4 | 234 | very hard |
| Claix | 23.1 | 231 | very hard |
| Le Grand-Lemps | 23 | 230 | very hard |
| Voiron | 22.9 | 229 | very hard |
| Beaurepaire | 22.6 | 226 | very hard |
| Crêts en Belledonne | 22.5 | 225 | very hard |
| Autrans-Méaudre en Vercors | 19.9 | 199 | very hard |
| Villard-de-Lans | 19.5 | 195 | very hard |
| Pont-de-Chéruy | 19.3 | 193 | very hard |
| Allevard | 18.9 | 189 | very hard |
| Le Cheylas | 18.9 | 189 | very hard |
| Varces-Allières-et-Risset | 18.8 | 188 | very hard |
| Voreppe | 18.7 | 187 | very hard |
| La Terrasse | 18.5 | 185 | very hard |
| Lumbin | 18.5 | 185 | very hard |
| Fontaine | 18.4 | 184 | very hard |
| Brézins | 18.3 | 183 | very hard |
| Saint-Égrève | 18.2 | 182 | very hard |
| Villette-d'Anthon | 18.2 | 182 | very hard |
| La Tronche | 18.1 | 181 | very hard |
| Corenc | 18.1 | 181 | very hard |
| Fontanil-Cornillon | 18.1 | 181 | very hard |
| Seyssinet-Pariset | 17.6 | 176 | hard |
| Vif | 17.4 | 174 | hard |
| Chavanoz | 17.4 | 174 | hard |
| Chapareillan | 17.4 | 174 | hard |
| Saint-Martin-d'Hères | 17.3 | 173 | hard |
| Gières | 17.3 | 173 | hard |
| Noyarey | 17.2 | 172 | hard |
| Saint-Paul-de-Varces | 17.2 | 172 | hard |
| Charvieu-Chavagneux | 17.1 | 171 | hard |
| Crolles | 17.1 | 171 | hard |
| Lans-en-Vercors | 17 | 170 | hard |
| Plateau-des-Petites-Roches | 17 | 170 | hard |
| Échirolles | 16.1 | 161 | hard |
| Le Pont-de-Claix | 16.1 | 161 | hard |
| Eybens | 16.1 | 161 | hard |
| Vizille | 16.1 | 161 | hard |
| Jarrie | 16.1 | 161 | hard |
| Vaulnaveys-le-Haut | 16.1 | 161 | hard |
| Champ-sur-Drac | 16.1 | 161 | hard |
| Le Versoud | 16 | 160 | hard |
| Bernin | 15.4 | 154 | hard |
| Saint-Étienne-de-Saint-Geoirs | 15.1 | 151 | hard |
| Tencin | 14.6 | 146 | hard |
| Saint-Siméon-de-Bressieux | 13 | 130 | hard |
| Poisat | 11.9 | 119 | moderately hard |
| Meylan | 11.2 | 112 | moderately hard |
| Villard-Bonnot | 9.3 | 93 | moderately hard |
| Saint-Martin-d'Uriage | 8.9 | 89 | moderately hard |
| Les Deux Alpes | 8.2 | 82 | moderately hard |
| Theys | 7.8 | 78 | moderately hard |
| Brié-et-Angonnes | 7.7 | 77 | moderately hard |
| La Mure | 7.5 | 75 | moderately hard |
| Froges | 6.9 | 69 | moderately hard |
| Le Bourg-d'Oisans | 5.4 | 54 | soft |
| Domène | 4.7 | 47 | soft |
| Saint-Nazaire-les-Eymes | 4.3 | 43 | soft |
| Saint-Ismier | 4.1 | 41 | soft |
| Montbonnot-Saint-Martin | 4.1 | 41 | soft |
| Biviers | 4.1 | 41 | soft |
Other places (352)
- Agnin 34.5 °fH
- Allemond 5.5 °fH
- Ambel 19.8 °fH
- Anjou 34.5 °fH
- Annoisin-Chatelans 27.1 °fH
- Anthon 17.6 °fH
- Arandon-Passins 31.1 °fH
- Artas 28.9 °fH
- Assieu 30.9 °fH
- Auberives-en-Royans 32.3 °fH
- Auberives-sur-Varèze 30.9 °fH
- Auris 18.2 °fH
- Avignonet 20.3 °fH
- Barraux 26.9 °fH
- Beaucroissant 27.7 °fH
- Beaufin 17.1 °fH
- Beaufort 25.2 °fH
- Beaulieu 26.2 °fH
- Beauvoir-de-Marc 29.4 °fH
- Beauvoir-en-Royans 26.8 °fH
- Bellegarde-Poussieu 22.5 °fH
- Belmont 25.4 °fH
- Besse 21.4 °fH
- Bessins 25.3 °fH
- Bévenais 19.4 °fH
- Bilieu 26.8 °fH
- Biol 29.9 °fH
- Bizonnes 26.9 °fH
- Blandin 30.6 °fH
- Bonnefamille 30.3 °fH
- Bossieu 27.3 °fH
- Bougé-Chambalud 22.5 °fH
- Bouvesse-Quirieu 27.6 °fH
- Brangues 25.4 °fH
- Bressieux 9.8 °fH
- Brion 13.2 °fH
- Burcin 21.1 °fH
- Chalon 22.2 °fH
- Chamagnieu 18.3 °fH
- Champagnier 16.1 °fH
- Champier 28 °fH
- Chamrousse 5.2 °fH
- Chantepérier 17.7 °fH
- Chantesse 25.9 °fH
- Charancieu 28 °fH
- Charantonnay 30.2 °fH
- Charnècles 28.6 °fH
- Chasselay 18.9 °fH
- Chassignieu 27.3 °fH
- Château-Bernard 13.6 °fH
- Châteauvilain 25.7 °fH
- Châtel-en-Trièves 16 °fH
- Châtelus 16.8 °fH
- Châtenay 18.9 °fH
- Chélieu 30.6 °fH
- Chevrières 33.6 °fH
- Cheyssieu 30.9 °fH
- Chèzeneuve 29.8 °fH
- Chichilianne 18.5 °fH
- Chimilin 29.4 °fH
- Cholonge 16.5 °fH
- Chonas-l'Amballan 31.6 °fH
- Choranche 20.6 °fH
- Chozeau 29.9 °fH
- Clavans-en-Haut-Oisans 9.3 °fH
- Clelles 29.3 °fH
- Clonas-sur-Varèze 30.9 °fH
- Cognet 23.7 °fH
- Cognin-les-Gorges 21.2 °fH
- Colombe 26.1 °fH
- Cornillon-en-Trièves 33 °fH
- Corps 28.3 °fH
- Corrençon-en-Vercors 24.5 °fH
- Cour-et-Buis 23.2 °fH
- Courtenay 27.5 °fH
- Crachier 29.8 °fH
- Cras 19.6 °fH
- Creys-Mépieu 27.6 °fH
- Culin 28.4 °fH
- Dizimieu 26.8 °fH
- Doissin 31.4 °fH
- Domarin 26.4 °fH
- Eclose-Badinières 28.1 °fH
- Engins 21.7 °fH
- Entraigues 15.6 °fH
- Entre-deux-Guiers 24.9 °fH
- Eydoche 26 °fH
- Faramans 22.6 °fH
- Faverges-de-la-Tour 28.6 °fH
- Flachères 26 °fH
- Four 28.2 °fH
- Gillonnay 23.6 °fH
- Granieu 31.6 °fH
- Grenay 33.9 °fH
- Gresse-en-Vercors 13.7 °fH
- Herbeys 7.7 °fH
- Hières-sur-Amby 27.1 °fH
- Huez 12.1 °fH
- Hurtières 6.9 °fH
- Izeron 23.3 °fH
- Janneyrias 18.3 °fH
- Jarcieu 22.5 °fH
- L'Albenc 27.8 °fH
- La Balme-les-Grottes 31.9 °fH
- La Buissière 26.5 °fH
- La Chapelle-de-la-Tour 29.7 °fH
- La Chapelle-de-Surieu 23.7 °fH
- La Chapelle-du-Bard 7.3 °fH
- La Combe-de-Lancey 13.1 °fH
- La Flachère 23.8 °fH
- La Forteresse 18.5 °fH
- La Frette 19.4 °fH
- La Garde 22.8 °fH
- La Morte 3.7 °fH
- La Motte-d'Aveillans 15.9 °fH
- La Motte-Saint-Martin 22.6 °fH
- La Pierre 9.9 °fH
- La Rivière 23.5 °fH
- La Salette-Fallavaux 23.8 °fH
- La Salle-en-Beaumont 19.5 °fH
- La Sône 30.3 °fH
- La Sure en Chartreuse 15.1 °fH
- La Valette 7 °fH
- Laffrey 16.3 °fH
- Lalley 18.5 °fH
- Laval-en-Belledonne 3.7 °fH
- Lavaldens 4.9 °fH
- Lavars 30.4 °fH
- Le Bouchage 24.7 °fH
- Le Champ-près-Froges 6.3 °fH
- Le Freney-d'Oisans 14.8 °fH
- Le Gua 17.3 °fH
- Le Haut-Bréda 2.6 °fH
- Le Moutaret 33.4 °fH
- Le Passage 31.5 °fH
- Le Percy 23.8 °fH
- Le Sappey-en-Chartreuse 12.7 °fH
- Lentiol 25.1 °fH
- Les Adrets 5.5 °fH
- Les Côtes-de-Corps 25.1 °fH
- Les Éparres 28.5 °fH
- Leyrieu 27.1 °fH
- Lieudieu 28.4 °fH
- Livet-et-Gavet 4.8 °fH
- Longechenal 17.7 °fH
- Malleval-en-Vercors 20 °fH
- Marcieu 26.4 °fH
- Marcilloles 28.4 °fH
- Marcollin 27.7 °fH
- Marnans 15.3 °fH
- Massieu 28 °fH
- Maubec 29.6 °fH
- Mayres-Savel 29.1 °fH
- Mens 17.1 °fH
- Merlas 28 °fH
- Meyrié 29.3 °fH
- Meyrieu-les-Étangs 28.9 °fH
- Meyssiez 25.9 °fH
- Miribel-Lanchâtre 17.3 °fH
- Miribel-les-Échelles 25.2 °fH
- Mizoën 9 °fH
- Moidieu-Détourbe 28.9 °fH
- Monestier-d'Ambel 18.4 °fH
- Monestier-de-Clermont 16.4 °fH
- Monestier-du-Percy 16.7 °fH
- Monsteroux-Milieu 22.2 °fH
- Mont-Saint-Martin 22 °fH
- Montagne 26 °fH
- Montagnieu 31.4 °fH
- Montaud 15.2 °fH
- Montcarra 29.1 °fH
- Montchaboud 16.1 °fH
- Monteynard 16.8 °fH
- Montfalcon 18.3 °fH
- Montferrat 28 °fH
- Montrevel 27 °fH
- Montseveroux 23 °fH
- Moras 37.3 °fH
- Morette 20.1 °fH
- Mottier 21.9 °fH
- Murianette 5.2 °fH
- Murinais 28.4 °fH
- Nantes-en-Ratier 14.5 °fH
- Notre-Dame-de-Commiers 15.7 °fH
- Notre-Dame-de-l'Osier 25.9 °fH
- Notre-Dame-de-Mésage 17.1 °fH
- Notre-Dame-de-Vaulx 14.5 °fH
- Oris-en-Rattier 5.9 °fH
- Ornacieux-Balbins 27.7 °fH
- Ornon 7.4 °fH
- Oulles 9.4 °fH
- Oyeu 25.1 °fH
- Oytier-Saint-Oblas 27.3 °fH
- Oz 11 °fH
- Pact 22.5 °fH
- Pajay 22.6 °fH
- Panossas 29.9 °fH
- Parmilieu 27.2 °fH
- Pellafol 14.2 °fH
- Penol 25.2 °fH
- Pierre-Châtel 14.5 °fH
- Pisieu 23.2 °fH
- Plan 25.2 °fH
- Poliénas 24.8 °fH
- Pommier-de-Beaurepaire 23.2 °fH
- Ponsonnas 7.1 °fH
- Pont-en-Royans 22.7 °fH
- Porcieu-Amblagnieu 26 °fH
- Prébois 24.6 °fH
- Presles 23.8 °fH
- Pressins 27.8 °fH
- Primarette 23.2 °fH
- Proveysieux 17.8 °fH
- Prunières 16.2 °fH
- Quaix-en-Chartreuse 18.2 °fH
- Quet-en-Beaumont 27.7 °fH
- Quincieu 17.8 °fH
- Réaumont 28.6 °fH
- Rencurel 15.5 °fH
- Revel 7 °fH
- Revel-Tourdan 23.2 °fH
- Reventin-Vaugris 32.1 °fH
- Rochetoirin 29.7 °fH
- Roissard 16.8 °fH
- Romagnieu 27.8 °fH
- Rovon 20.7 °fH
- Royas 27.1 °fH
- Roybon 15.3 °fH
- Saint Antoine l'Abbaye 24.8 °fH
- Saint-Agnin-sur-Bion 28.9 °fH
- Saint-Alban-du-Rhône 31.5 °fH
- Saint-Albin-de-Vaulserre 28 °fH
- Saint-Andéol 14.2 °fH
- Saint-André-en-Royans 20.6 °fH
- Saint-Appolinard 25.3 °fH
- Saint-Arey 34.8 °fH
- Saint-Aupre 24.4 °fH
- Saint-Barthélemy 22.6 °fH
- Saint-Barthélemy-de-Séchilienne 17.4 °fH
- Saint-Baudille-et-Pipet 14 °fH
- Saint-Blaise-du-Buis 28.6 °fH
- Saint-Bonnet-de-Chavagne 26.3 °fH
- Saint-Bueil 28 °fH
- Saint-Cassien 26.6 °fH
- Saint-Christophe-en-Oisans 7.9 °fH
- Saint-Christophe-sur-Guiers 18.5 °fH
- Saint-Clair-sur-Galaure 18.3 °fH
- Saint-Didier-de-Bizonnes 25.4 °fH
- Saint-Geoirs 23.2 °fH
- Saint-Gervais 27.8 °fH
- Saint-Guillaume 16.7 °fH
- Saint-Hilaire-de-Brens 37.3 °fH
- Saint-Hilaire-de-la-Côte 24.3 °fH
- Saint-Honoré 7.1 °fH
- Saint-Jean-d'Avelanne 27.9 °fH
- Saint-Jean-d'Hérans 25.7 °fH
- Saint-Jean-de-Soudain 29.7 °fH
- Saint-Jean-de-Vaulx 14 °fH
- Saint-Jean-le-Vieux 17.2 °fH
- Saint-Joseph-de-Rivière 25.2 °fH
- Saint-Julien-de-l'Herms 23.2 °fH
- Saint-Just-de-Claix 38.4 °fH
- Saint-Lattier 23.3 °fH
- Saint-Laurent-en-Beaumont 23.1 °fH
- Saint-Marcel-Bel-Accueil 37.3 °fH
- Saint-Martin-de-Clelles 25.5 °fH
- Saint-Martin-de-la-Cluze 20.3 °fH
- Saint-Martin-de-Vaulserre 28 °fH
- Saint-Maurice-en-Trièves 20.7 °fH
- Saint-Maximin 31.4 °fH
- Saint-Michel-de-Saint-Geoirs 27 °fH
- Saint-Michel-en-Beaumont 18.9 °fH
- Saint-Michel-les-Portes 16.3 °fH
- Saint-Mury-Monteymond 21.2 °fH
- Saint-Nicolas-de-Macherin 25.7 °fH
- Saint-Nizier-du-Moucherotte 22.6 °fH
- Saint-Ondras 30 °fH
- Saint-Paul-d'Izeaux 23.1 °fH
- Saint-Paul-lès-Monestier 18.3 °fH
- Saint-Pierre-d'Entremont 15.9 °fH
- Saint-Pierre-de-Bressieux 12 °fH
- Saint-Pierre-de-Chartreuse 16.1 °fH
- Saint-Pierre-de-Chérennes 25.1 °fH
- Saint-Pierre-de-Méaroz 30 °fH
- Saint-Pierre-de-Mésage 15 °fH
- Saint-Prim 23.7 °fH
- Saint-Quentin-sur-Isère 18.3 °fH
- Saint-Romans 38.4 °fH
- Saint-Sorlin-de-Morestel 28.2 °fH
- Saint-Sorlin-de-Vienne 25.9 °fH
- Saint-Sulpice-des-Rivoires 28 °fH
- Saint-Théoffrey 16.6 °fH
- Saint-Vérand 29.8 °fH
- Saint-Victor-de-Morestel 31.2 °fH
- Saint-Vincent-de-Mercuze 18 °fH
- Sainte-Agnès 5.5 °fH
- Sainte-Anne-sur-Gervonde 28.7 °fH
- Sainte-Blandine 31.5 °fH
- Sainte-Luce 25.1 °fH
- Sainte-Marie-d'Alloix 14.4 °fH
- Sainte-Marie-du-Mont 18.8 °fH
- Salagnon 29 °fH
- Sarcenas 14.6 °fH
- Sardieu 28.9 °fH
- Savas-Mépin 27.4 °fH
- Séchilienne 15.5 °fH
- Sérézin-de-la-Tour 30.4 °fH
- Sermérieu 30.7 °fH
- Serre-Nerpol 13.1 °fH
- Siccieu-Saint-Julien-et-Carisieu 26.8 °fH
- Siévoz 6 °fH
- Sillans 23.5 °fH
- Sinard 20.3 °fH
- Soleymieu 27 °fH
- Sonnay 22.5 °fH
- Sousville 7.4 °fH
- Succieu 28.5 °fH
- Susville 17.9 °fH
- Têche 32 °fH
- Thodure 19 °fH
- Torchefelon 28.5 °fH
- Tramolé 28.4 °fH
- Treffort 27.9 °fH
- Tréminis 19.3 °fH
- Val-de-Virieu 27.6 °fH
- Valbonnais 17.4 °fH
- Valencogne 32.8 °fH
- Valjouffrey 5.7 °fH
- Varacieux 24.6 °fH
- Vasselin 27.9 °fH
- Vatilieu 25.1 °fH
- Vaujany 7.4 °fH
- Vaulnaveys-le-Bas 9.1 °fH
- Velanne 28 °fH
- Vénérieu 37.3 °fH
- Venon 7.9 °fH
- Vernas 27.1 °fH
- Vernioz 21.3 °fH
- Vertrieu 26.6 °fH
- Veyssilieu 36.4 °fH
- Vignieu 28.8 °fH
- Villard-Notre-Dame 16.1 °fH
- Villard-Reculas 6.7 °fH
- Villard-Reymond 12.7 °fH
- Villard-Saint-Christophe 11.7 °fH
- Ville-sous-Anjou 25.6 °fH
- Villemoirieu 28.8 °fH
- Villeneuve-de-Marc 25.4 °fH
- Villette-de-Vienne 29.3 °fH
- Viriville 19.2 °fH
- Voissant 25.8 °fH
- Vourey 29.9 °fH