Tap water hardness in Seine-Saint-Denis
We have published hardness data for 39 cities in Seine-Saint-Denis. The median is 28 °fH; the hardest water is in Le Blanc-Mesnil (36.7 °fH), the softest in Villetaneuse (18.7 °fH).
100 % of these cities have hard or very hard water (over 120 mg/L).
Cities in Seine-Saint-Denis, hardest first
| °fH | mg/L | ||
|---|---|---|---|
| Le Blanc-Mesnil | 36.7 | 367 | very hard |
| Aulnay-sous-Bois | 29.9 | 299 | very hard |
| Villepinte | 29.3 | 293 | very hard |
| Le Bourget | 28.8 | 288 | very hard |
| Pantin | 28.7 | 287 | very hard |
| Aubervilliers | 28 | 280 | very hard |
| Clichy-sous-Bois | 28 | 280 | very hard |
| Coubron | 28 | 280 | very hard |
| Drancy | 28 | 280 | very hard |
| Dugny | 28 | 280 | very hard |
| Gagny | 28 | 280 | very hard |
| Gournay-sur-Marne | 28 | 280 | very hard |
| L'Île-Saint-Denis | 28 | 280 | very hard |
| La Courneuve | 28 | 280 | very hard |
| Le Raincy | 28 | 280 | very hard |
| Les Pavillons-sous-Bois | 28 | 280 | very hard |
| Livry-Gargan | 28 | 280 | very hard |
| Montfermeil | 28 | 280 | very hard |
| Neuilly-Plaisance | 28 | 280 | very hard |
| Neuilly-sur-Marne | 28 | 280 | very hard |
| Noisy-le-Grand | 28 | 280 | very hard |
| Rosny-sous-Bois | 28 | 280 | very hard |
| Saint-Denis | 28 | 280 | very hard |
| Saint-Ouen-sur-Seine | 28 | 280 | very hard |
| Sevran | 28 | 280 | very hard |
| Stains | 28 | 280 | very hard |
| Tremblay-en-France | 28 | 280 | very hard |
| Vaujours | 28 | 280 | very hard |
| Villemomble | 28 | 280 | very hard |
| Bobigny | 27.8 | 278 | very hard |
| Bondy | 27.8 | 278 | very hard |
| Noisy-le-Sec | 27.8 | 278 | very hard |
| Romainville | 27.8 | 278 | very hard |
| Le Pré-Saint-Gervais | 26.8 | 268 | very hard |
| Les Lilas | 26.8 | 268 | very hard |
| Bagnolet | 26.5 | 265 | very hard |
| Montreuil | 26.5 | 265 | very hard |
| Épinay-sur-Seine | 18.7 | 187 | very hard |
| Villetaneuse | 18.7 | 187 | very hard |