Tap water hardness in Ain

We have published hardness data for 373 cities in Ain. The median is 25.2 °fH; the hardest water is in Flaxieu (33.4 °fH), the softest in Vesancy (4 °fH).

100 % of these cities have hard or very hard water (over 120 mg/L).

Each dot is a place with published data; colour shows the hardness band.

Largest places, hardest first

	°fH	mg/L
Saint-Cyr-sur-Menthon	33.3	333	very hard
Crottet	33.3	333	very hard
Pont-de-Veyle	33.3	333	very hard
Saint-Jean-sur-Veyle	33.3	333	very hard
Saint-Maurice-de-Gourdans	32.9	329	very hard
Bâgé-Dommartin	32.6	326	very hard
Replonges	32.6	326	very hard
Feillens	32.6	326	very hard
Lagnieu	31.2	312	very hard
Jassans-Riottier	31.2	312	very hard
Frans	31.2	312	very hard
Fareins	31.2	312	very hard
Saint-Maurice-de-Beynost	30.7	307	very hard
Pont-de-Vaux	30.6	306	very hard
Manziat	30.6	306	very hard
Saint-Bénigne	30.6	306	very hard
Saint-Trivier-de-Courtes	30.6	306	very hard
Meximieux	30.5	305	very hard
Bourg-Saint-Christophe	30.5	305	very hard
Pérouges	30.5	305	very hard
Attignat	29.7	297	very hard
Balan	29.7	297	very hard
Polliat	29.7	297	very hard
Montrevel-en-Bresse	29.7	297	very hard
Confrançon	29.7	297	very hard
Malafretaz	29.7	297	very hard
Saint-Didier-sur-Chalaronne	29.3	293	very hard
Grièges	29.3	293	very hard
Thoissey	29.3	293	very hard
Saint-Étienne-sur-Chalaronne	29.3	293	very hard
Laiz	29.3	293	very hard
Cormoranche-sur-Saône	29.3	293	very hard
Montréal-la-Cluse	28.9	289	very hard
Izernore	28.7	287	very hard
Miribel	27.9	279	very hard
Beynost	27.9	279	very hard
Neyron	27.9	279	very hard
Montluel	27.8	278	very hard
Dagneux	27.8	278	very hard
Niévroz	27.6	276	very hard
Thil	27.6	276	very hard
Péron	27.3	273	very hard
Saint-Jean-de-Gonville	27.3	273	very hard
Challex	27.3	273	very hard
Saint-Jean-de-Niost	27.3	273	very hard
La Boisse	27.1	271	very hard
Ferney-Voltaire	27	270	very hard
Chazey-Bons	26.9	269	very hard
Mionnay	26.8	268	very hard
Tramoyes	26.8	268	very hard
Civrieux	26.8	268	very hard
Saint-Martin-du-Frêne	26.6	266	very hard
Béligneux	26.5	265	very hard
Priay	26.4	264	very hard
Reyrieux	26.3	263	very hard
Massieux	26.3	263	very hard
Parcieux	26.3	263	very hard
Villieu-Loyes-Mollon	26.1	261	very hard
Leyment	26	260	very hard
Viriat	25.9	259	very hard
Mézériat	25.9	259	very hard
Marboz	25.6	256	very hard
Saint-Bernard	25.6	256	very hard
Injoux-Génissiat	25.6	256	very hard
Montmerle-sur-Saône	25.5	255	very hard
Francheleins	25.5	255	very hard
Guéreins	25.5	255	very hard
Messimy-sur-Saône	25.5	255	very hard
Montceaux	25.5	255	very hard
Groslée-Saint-Benoit	25.4	254	very hard
Crozet	25.3	253	very hard
Saint-André-de-Corcy	25.2	252	very hard
Ambronay	25.2	252	very hard
Villars-les-Dombes	25.1	251	very hard
Saint-Jean-le-Vieux	25.1	251	very hard
Chevry	25.1	251	very hard
Prévessin-Moëns	24.6	246	very hard
Ornex	24.6	246	very hard
Versonnex	24.6	246	very hard
Échenevex	24.6	246	very hard
Ségny	24.6	246	very hard
Vaux-en-Bugey	24.6	246	very hard
Collonges	24.5	245	very hard
Saint-Genis-Pouilly	24.3	243	very hard
Thoiry	24.3	243	very hard
Sergy	24.3	243	very hard
Poncin	24.1	241	very hard
Châtillon-sur-Chalaronne	23.9	239	very hard
Serrières-de-Briord	23.9	239	very hard
Bresse Vallons	23.8	238	very hard
Valromey-sur-Séran	23.7	237	very hard
Bourg-en-Bresse	23.6	236	very hard
Château-Gaillard	23.6	236	very hard
Jujurieux	23.4	234	very hard
Loyettes	23.3	233	very hard
Péronnas	22.9	229	very hard
Chazey-sur-Ain	22.9	229	very hard
Saint-Vulbas	22.8	228	very hard
Virieu-le-Grand	22.8	228	very hard
Plateau d'Hauteville	22.7	227	very hard
Artemare	22.7	227	very hard
Marlieux	22.5	225	very hard
Saint-Denis-en-Bugey	22.4	224	very hard
Châtillon-la-Palud	22.4	224	very hard
Divonne-les-Bains	22.3	223	very hard
Villebois	22.3	223	very hard
Saint-Denis-lès-Bourg	22.2	222	very hard
Buellas	22.2	222	very hard
Servas	22.2	222	very hard
Saint-André-sur-Vieux-Jonc	22.2	222	very hard
Vonnas	22	220	very hard
Neuville-les-Dames	22	220	very hard
Chalamont	21.9	219	very hard
Coligny	21.4	214	very hard
Ceyzériat	20.7	207	very hard
Val-Revermont	20.7	207	very hard
Jasseron	20.7	207	very hard
Meillonnas	20.7	207	very hard
Villereversure	20.7	207	very hard
Culoz-Béon	20.5	205	very hard
Saint-Étienne-du-Bois	20.5	205	very hard
Ambérieu-en-Bugey	20.4	204	very hard
Pont-d'Ain	20.4	204	very hard
Montagnat	20.4	204	very hard
Saint-Martin-du-Mont	20.4	204	very hard
Certines	20.4	204	very hard
Saint-Paul-de-Varax	20.4	204	very hard
Lent	20.4	204	very hard
Tossiat	20.4	204	very hard
Dompierre-sur-Veyle	20.4	204	very hard
Druillat	20.4	204	very hard
Saint-Laurent-sur-Saône	20.3	203	very hard
Douvres	20.3	203	very hard
Anglefort	20.2	202	very hard
Neuville-sur-Ain	20.1	201	very hard
Cessy	20	200	very hard
Bellignat	20	200	very hard
Martignat	20	200	very hard
Groissiat	20	200	very hard
Saint-Rambert-en-Bugey	19.8	198	very hard
Dortan	19.4	194	very hard
Oyonnax	19.1	191	very hard
Arbent	19.1	191	very hard
Saint-Sorlin-en-Bugey	19	190	very hard
Valserhône	18.6	186	very hard
Gex	18.6	186	very hard
Corbonod	18.5	185	very hard
Foissiat	17.8	178	hard
Jayat	17.8	178	hard
Nantua	17.3	173	hard

Other places (223)

Ambléon 22.1 °fH
Ambutrix 29.8 °fH
Andert-et-Condon 23.2 °fH
Apremont 22.5 °fH
Aranc 22.2 °fH
Arandas 26.9 °fH
Arbigny 30.6 °fH
Arboys en Bugey 26 °fH
Argis 18.6 °fH
Armix 26.1 °fH
Arvière-en-Valromey 24.6 °fH
Asnières-sur-Saône 30.6 °fH
Bâgé-le-Châtel 32.6 °fH
Baneins 25.5 °fH
Béard-Géovreissiat 28.9 °fH
Beaupont 28.7 °fH
Beauregard 31.2 °fH
Belleydoux 14.8 °fH
Bénonces 20.1 °fH
Bény 25.6 °fH
Béréziat 30.6 °fH
Bettant 32.2 °fH
Bey 29.3 °fH
Billiat 25.1 °fH
Birieux 28 °fH
Biziat 22 °fH
Blyes 22.9 °fH
Bohas-Meyriat-Rignat 20.7 °fH
Boissey 30.6 °fH
Bolozon 23.8 °fH
Bouligneux 22.5 °fH
Boyeux-Saint-Jérôme 23.6 °fH
Boz 30.6 °fH
Brégnier-Cordon 25.8 °fH
Brénod 24.5 °fH
Bressolles 29.7 °fH
Brion 28.9 °fH
Briord 28.6 °fH
Ceignes 27.3 °fH
Cerdon 25 °fH
Ceyzérieu 24.8 °fH
Chaley 22.3 °fH
Challes-la-Montagne 20.1 °fH
Champagne-en-Valromey 24.7 °fH
Champdor-Corcelles 23.8 °fH
Champfromier 14.9 °fH
Chanay 20.4 °fH
Chaneins 25.5 °fH
Chanoz-Châtenay 22 °fH
Charix 20.9 °fH
Charnoz-sur-Ain 22.2 °fH
Châtenay 20.4 °fH
Chavannes-sur-Reyssouze 30.6 °fH
Chaveyriat 22 °fH
Cheignieu-la-Balme 18.3 °fH
Chevillard 22.4 °fH
Chevroux 30.6 °fH
Chézery-Forens 17 °fH
Cize 20.8 °fH
Cleyzieu 17.7 °fH
Colomieu 26.2 °fH
Conand 20.5 °fH
Condamine 27.3 °fH
Condeissiat 22.2 °fH
Confort 17.4 °fH
Contrevoz 20.5 °fH
Conzieu 23.1 °fH
Corlier 19.5 °fH
Cormoz 28.7 °fH
Corveissiat 20.7 °fH
Courmangoux 20.7 °fH
Courtes 30.6 °fH
Crans 28 °fH
Cressin-Rochefort 31.7 °fH
Cruzilles-lès-Mépillat 29.3 °fH
Curciat-Dongalon 30.6 °fH
Curtafond 29.7 °fH
Cuzieu 30.5 °fH
Dompierre-sur-Chalaronne 29.3 °fH
Domsure 28.7 °fH
Drom 20.7 °fH
Échallon 20.8 °fH
Évosges 22.2 °fH
Faramans 28 °fH
Farges 25.9 °fH
Flaxieu 33.4 °fH
Garnerans 29.3 °fH
Genouilleux 25.5 °fH
Géovreisset 20 °fH
Giron 14.1 °fH
Gorrevod 30.6 °fH
Grand-Corent 20.7 °fH
Grilly 24.3 °fH
Haut Valromey 22.7 °fH
Hautecourt-Romanèche 20.7 °fH
Illiat 29.3 °fH
Innimond 27.9 °fH
Izenave 22 °fH
Izieu 26.4 °fH
Journans 20.4 °fH
Joyeux 28 °fH
L'Abergement-Clémenciat 29.3 °fH
L'Abergement-de-Varey 25.9 °fH
La Burbanche 20.8 °fH
La Chapelle-du-Châtelard 22.5 °fH
La Tranclière 20.4 °fH
Labalme 26.7 °fH
Lantenay 26.4 °fH
Lapeyrouse 27.8 °fH
Lavours 32.5 °fH
Le Montellier 28 °fH
Le Plantay 22.5 °fH
Le Poizat-Lalleyriat 22.5 °fH
Léaz 23.9 °fH
Lélex 15.7 °fH
Les Neyrolles 17.5 °fH
Lescheroux 17.8 °fH
Leyssard 23.6 °fH
Lhuis 28.7 °fH
Lompnas 33.3 °fH
Lurcy 25.5 °fH
Magnieu 26.4 °fH
Maillat 27.2 °fH
Mantenay-Montlin 30.6 °fH
Marchamp 27.3 °fH
Marignieu 17 °fH
Marsonnas 29.7 °fH
Massignieu-de-Rives 30.2 °fH
Matafelon-Granges 26 °fH
Mérignat 27 °fH
Mijoux 13.4 °fH
Mogneneins 29.3 °fH
Montagnieu 27 °fH
Montanges 24.9 °fH
Montcet 22.2 °fH
Monthieux 25.2 °fH
Montracol 22.2 °fH
Murs-et-Gélignieux 23.2 °fH
Nivigne et Suran 20.6 °fH
Nivollet-Montgriffon 22.2 °fH
Nurieux-Volognat 27.2 °fH
Oncieu 21.8 °fH
Ordonnaz 18.1 °fH
Outriaz 22 °fH
Ozan 30.6 °fH
Parves et Nattages 30.2 °fH
Perrex 33.3 °fH
Peyriat 26.1 °fH
Peyrieu 27.4 °fH
Peyzieux-sur-Saône 25.5 °fH
Pirajoux 28.7 °fH
Pizay 29.9 °fH
Plagne 19.7 °fH
Pollieu 33.4 °fH
Port 28.1 °fH
Pougny 24.5 °fH
Pouillat 14.1 °fH
Prémeyzel 25.4 °fH
Prémillieu 24.4 °fH
Ramasse 20.7 °fH
Relevant 22.5 °fH
Revonnas 20.7 °fH
Reyssouze 30.6 °fH
Rignieux-le-Franc 28 °fH
Romans 22.5 °fH
Rossillon 25.1 °fH
Saint-Alban 26.7 °fH
Saint-André-d'Huiriat 29.3 °fH
Saint-André-de-Bâgé 33.3 °fH
Saint-André-le-Bouchoux 22.5 °fH
Saint-Didier-d'Aussiat 29.7 °fH
Saint-Éloi 28 °fH
Saint-Étienne-sur-Reyssouze 30.6 °fH
Saint-Genis-sur-Menthon 33.3 °fH
Saint-Georges-sur-Renon 22.5 °fH
Saint-Germain-de-Joux 24.8 °fH
Saint-Germain-les-Paroisses 20.7 °fH
Saint-Germain-sur-Renon 22.5 °fH
Saint-Jean-sur-Reyssouze 30.6 °fH
Saint-Julien-sur-Reyssouze 17.8 °fH
Saint-Julien-sur-Veyle 22 °fH
Saint-Just 20.8 °fH
Saint-Martin-de-Bavel 30.1 °fH
Saint-Martin-le-Châtel 29.7 °fH
Saint-Maurice-de-Rémens 21.5 °fH
Saint-Nizier-le-Bouchoux 30.6 °fH
Saint-Nizier-le-Désert 20.4 °fH
Saint-Rémy 22.2 °fH
Saint-Sulpice 29.7 °fH
Sainte-Croix 25.9 °fH
Sainte-Julie 23.4 °fH
Salavre 28.7 °fH
Samognat 25.8 °fH
Sandrans 22.5 °fH
Sault-Brénaz 27.9 °fH
Sauverny 24.6 °fH
Seillonnaz 28.8 °fH
Sermoyer 30.6 °fH
Serrières-sur-Ain 29.3 °fH
Servignat 30.6 °fH
Seyssel 18.3 °fH
Simandre-sur-Suran 20.7 °fH
Sonthonnax-la-Montagne 27.2 °fH
Souclin 19 °fH
Sulignat 22 °fH
Surjoux-Lhopital 24.4 °fH
Talissieu 27.6 °fH
Tenay 17.4 °fH
Torcieu 16 °fH
Valeins 25.5 °fH
Vandeins 22.2 °fH
Varambon 20.4 °fH
Verjon 28.7 °fH
Vernoux 30.6 °fH
Versailleux 28 °fH
Vesancy 4 °fH
Vescours 30.6 °fH
Vésines 30.6 °fH
Vieu-d'Izenave 22.4 °fH
Villemotier 28.7 °fH
Villes 20 °fH
Villette-sur-Ain 26.4 °fH
Vongnes 25.6 °fH

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