Bretagne · Département 56
Morbihan
250 communes suivies
128 stations rivières
12 stations nappes
Mis à jour le 11/04/2026 à 19:39
98
/100
Bonne qualité
Eau potable
Eau potable
Source : ARS via Hub'Eau · 250 communes
≥80
50-79
<50
ALLAIRE100/100
NitratespHChlore
AMBON100/100
NitratespHChlore
ARRADON92/100
NitratespHChlore
ARZAL100/100
NitratespHChlore
ARZON92/100
NitratespHChlore
AUGAN92/100
NitratespHChlore
AURAY100/100
NitratespHChlore
BADEN100/100
NitratespHChlore
BANGOR100/100
NitratespHChlore
BAUD100/100
NitratespHChlore
BEGANNE100/100
NitratespHChlore
BEIGNON100/100
NitratespHChlore
BELZ100/100
NitratespHChlore
BERNE100/100
NitratespHChlore
BERRIC100/100
NitratespHChlore
BIGNAN100/100
NitratespHChlore
BILLIERS100/100
NitratespHChlore
BILLIO100/100
NitratespHChlore
BOHAL100/100
NitratespHChlore
BONO (LE)100/100
NitratespHChlore
BRANDERION92/100
NitratespHChlore
BRANDIVY92/100
NitratespHChlore
BRECH100/100
NitratespHChlore
BREHAN100/100
NitratespHChlore
BRIGNAC100/100
NitratespHChlore
BUBRY100/100
NitratespHChlore
BULEON92/100
NitratespHChlore
CADEN100/100
NitratespHChlore
CALAN100/100
NitratespHChlore
CAMOEL100/100
NitratespHChlore
CAMORS100/100
NitratespHChlore
CAMPENEAC92/100
NitratespHChlore
CARENTOIR93/100
NitratespHChlore
CARNAC100/100
NitratespHChlore
CARO100/100
NitratespHChlore
CAUDAN100/100
NitratespHChlore
CHAPELLE-NEUVE (LA)100/100
NitratespHChlore
CLEGUER100/100
NitratespHChlore
CLEGUEREC100/100
NitratespHChlore
COLPO100/100
NitratespHChlore
CONCORET100/100
NitratespHChlore
COURNON100/100
NitratespHChlore
COURS (LE)100/100
NitratespHChlore
CRACH100/100
NitratespHChlore
CREDIN100/100
NitratespHChlore
CROISTY (LE)100/100
NitratespHChlore
CROIX-HELLEAN (LA)100/100
NitratespHChlore
CRUGUEL100/100
NitratespHChlore
DAMGAN100/100
NitratespHChlore
ELVEN100/100
NitratespHChlore
ERDEVEN100/100
NitratespHChlore
ETEL100/100
NitratespHChlore
EVELLYS100/100
NitratespHChlore
EVRIGUET100/100
NitratespHChlore
FAOUET (LE)100/100
NitratespHChlore
FEREL93/100
NitratespHChlore
FORGES DE LANOUEE92/100
NitratespHChlore
FOUGERETS (LES)100/100
NitratespHChlore
GACILLY (LA)100/100
NitratespHChlore
GAVRES100/100
NitratespHChlore
GESTEL100/100
NitratespHChlore
GOURHEL83/100
NitratespHChlore
GOURIN100/100
NitratespHChlore
GRAND-CHAMP100/100
NitratespHChlore
GREE-SAINT-LAURENT (LA)92/100
NitratespHChlore
GROIX93/100
NitratespHChlore
GUEGON92/100
NitratespHChlore
GUEHENNO92/100
NitratespHChlore
GUELTAS100/100
NitratespHChlore
GUEMENE-SUR-SCORFF100/100
NitratespHChlore
GUENIN100/100
NitratespHChlore
GUER100/100
NitratespHChlore
GUERN100/100
NitratespHChlore
GUERNO (LE)92/100
NitratespHChlore
GUIDEL100/100
NitratespHChlore
GUILLAC92/100
NitratespHChlore
GUILLIERS100/100
NitratespHChlore
GUISCRIFF93/100
NitratespHChlore
HELLEAN92/100
NitratespHChlore
HENNEBONT93/100
NitratespHChlore
HEZO (LE)92/100
NitratespHChlore
HOEDIC93/100
NitratespHChlore
ILE-AUX-MOINES92/100
NitratespHChlore
ILE-D'ARZ92/100
NitratespHChlore
ILE-D'HOUAT100/100
NitratespHChlore
INGUINIEL100/100
NitratespHChlore
INZINZAC-LOCHRIST100/100
NitratespHChlore
JOSSELIN92/100
NitratespHChlore
KERFOURN100/100
NitratespHChlore
KERGRIST100/100
NitratespHChlore
KERNASCLEDEN100/100
NitratespHChlore
KERVIGNAC92/100
NitratespHChlore
LANDAUL100/100
NitratespHChlore
LANDEVANT92/100
NitratespHChlore
LANESTER100/100
NitratespHChlore
LANGOELAN100/100
NitratespHChlore
LANGONNET100/100
NitratespHChlore
LANGUIDIC88/100
NitratespHChlore
LANTILLAC92/100
NitratespHChlore
LANVAUDAN100/100
NitratespHChlore
LANVENEGEN100/100
NitratespHChlore
LARMOR-BADEN92/100
NitratespHChlore
LARMOR-PLAGE100/100
NitratespHChlore
LARRE100/100
NitratespHChlore
LAUZACH92/100
NitratespHChlore
LIGNOL100/100
NitratespHChlore
LIMERZEL100/100
NitratespHChlore
LIZIO100/100
NitratespHChlore
LOCMALO100/100
NitratespHChlore
LOCMARIA100/100
NitratespHChlore
LOCMARIA-GRAND-CHAMP100/100
NitratespHBactériologie
LOCMARIAQUER92/100
NitratespHChlore
LOCMINE100/100
NitratespHChlore
LOCMIQUELIC100/100
NitratespHChlore
LOCOAL-MENDON100/100
NitratespHChlore
LOCQUELTAS100/100
NitratespHChlore
LORIENT94/100
NitratespHChlore
LOYAT100/100
NitratespHChlore
MALANSAC92/100
NitratespHChlore
MALESTROIT100/100
NitratespHChlore
MALGUENAC100/100
NitratespHChlore
MARZAN92/100
NitratespHChlore
MAURON100/100
NitratespHChlore
MELRAND92/100
NitratespHChlore
MENEAC100/100
NitratespHChlore
MERLEVENEZ92/100
NitratespHChlore
MESLAN100/100
NitratespHChlore
MEUCON100/100
NitratespHChlore
MISSIRIAC93/100
NitratespHChlore
MOHON100/100
NitratespHChlore
MOLAC100/100
NitratespHChlore
MONTENEUF100/100
NitratespHChlore
MONTERBLANC100/100
NitratespHChlore
MONTERTELOT92/100
NitratespHChlore
MOREAC100/100
NitratespHChlore
MOUSTOIR-AC100/100
NitratespHChlore
MUZILLAC93/100
NitratespHChlore
NEANT-SUR-YVEL100/100
NitratespHChlore
NEULLIAC100/100
NitratespHChlore
NIVILLAC92/100
NitratespHChlore
NOSTANG100/100
NitratespHChlore
NOYAL-MUZILLAC100/100
NitratespHChlore
NOYAL-PONTIVY100/100
NitratespHChlore
PAIMPONT86/100
NitratespHChlore
PALAIS (LE)100/100
NitratespHChlore
PEAULE100/100
NitratespHChlore
PEILLAC92/100
NitratespHChlore
PENESTIN100/100
NitratespHChlore
PERSQUEN100/100
NitratespHChlore
PLAUDREN100/100
NitratespHChlore
PLESCOP100/100
NitratespHChlore
PLEUCADEUC100/100
NitratespHChlore
PLEUGRIFFET100/100
NitratespHChlore
PLOEMEL100/100
NitratespHChlore
PLOEMEUR100/100
NitratespHChlore
PLOERDUT93/100
NitratespHChlore
PLOEREN100/100
NitratespHChlore
PLOERMEL86/100
NitratespHChlore
PLOUAY93/100
NitratespHChlore
PLOUGOUMELEN92/100
NitratespHChlore
PLOUHARNEL100/100
NitratespHChlore
PLOUHINEC100/100
NitratespHChlore
PLOURAY100/100
NitratespHChlore
PLUHERLIN100/100
NitratespHChlore
PLUMELEC100/100
NitratespHChlore
PLUMELIAU-BIEUZY100/100
NitratespHChlore
PLUMELIN100/100
NitratespHChlore
PLUMERGAT100/100
NitratespHChlore
PLUNERET93/100
NitratespHChlore
PLUVIGNER100/100
NitratespHChlore
PONT-SCORFF93/100
NitratespHChlore
PONTIVY100/100
NitratespHChlore
PORCARO100/100
NitratespHChlore
PORT-LOUIS100/100
NitratespHChlore
PRIZIAC100/100
NitratespHChlore
QUESTEMBERT100/100
NitratespHChlore
QUEVEN100/100
NitratespHChlore
QUIBERON92/100
NitratespHChlore
QUISTINIC93/100
NitratespHChlore
RADENAC86/100
NitratespHChlore
REGUINY83/100
NitratespHChlore
REMINIAC100/100
NitratespHChlore
RIANTEC100/100
NitratespHChlore
RIEUX100/100
NitratespHChlore
ROCHE-BERNARD (LA)92/100
NitratespHChlore
ROCHEFORT-EN-TERRE100/100
NitratespHChlore
ROHAN100/100
NitratespHChlore
ROUDOUALLEC100/100
NitratespHChlore
RUFFIAC100/100
NitratespHChlore
SAINT (LE)100/100
NitratespHChlore
SAINT-ABRAHAM92/100
NitratespHChlore
SAINT-AIGNAN100/100
NitratespHChlore
SAINT-ALLOUESTRE100/100
NitratespHChlore
SAINT-ARMEL92/100
NitratespHChlore
SAINT-AVE100/100
NitratespHChlore
SAINT-BARTHELEMY100/100
NitratespHChlore
SAINT-BRIEUC-DE-MAURON100/100
NitratespHChlore
SAINT-CARADEC-TREGOMEL100/100
NitratespHChlore
SAINT-CONGARD100/100
NitratespHChlore
SAINT-DOLAY100/100
NitratespHChlore
SAINT-GILDAS-DE-RHUYS92/100
NitratespHChlore
SAINT-GONNERY100/100
NitratespHChlore
SAINT-GORGON100/100
NitratespHChlore
SAINT-GRAVE100/100
NitratespHChlore
SAINT-GUYOMARD92/100
NitratespHChlore
SAINT-GÉRAND-CROIXANVEC100/100
NitratespHChlore
SAINT-JACUT-LES-PINS100/100
NitratespHChlore
SAINT-JEAN-BREVELAY100/100
NitratespHChlore
SAINT-JEAN-LA-POTERIE92/100
NitratespHChlore
SAINT-LAURENT-SUR-OUST100/100
NitratespHChlore
SAINT-LERY100/100
NitratespHChlore
SAINT-MALO-DE-BEIGNON100/100
NitratespHChlore
SAINT-MALO-DES-TROIS-FONTAINES100/100
NitratespHChlore
SAINT-MARCEL100/100
NitratespHChlore
SAINT-MARTIN-SUR-OUST92/100
NitratespHChlore
SAINT-NICOLAS-DU-TERTRE92/100
NitratespHChlore
SAINT-NOLFF100/100
NitratespHBactériologie
SAINT-PERREUX100/100
NitratespHChlore
SAINT-PHILIBERT100/100
NitratespHChlore
SAINT-PIERRE-QUIBERON92/100
NitratespHChlore
SAINT-SERVANT92/100
NitratespHChlore
SAINT-THURIAU92/100
NitratespHChlore
SAINT-TUGDUAL100/100
NitratespHChlore
SAINT-VINCENT-SUR-OUST100/100
NitratespHChlore
SAINTE-ANNE-D'AURAY100/100
NitratespHChlore
SAINTE-BRIGITTE100/100
NitratespHChlore
SAINTE-HELENE100/100
NitratespHChlore
SARZEAU100/100
NitratespHChlore
SAUZON100/100
NitratespHChlore
SEGLIEN100/100
NitratespHChlore
SENE100/100
NitratespHChlore
SERENT100/100
NitratespHChlore
SILFIAC100/100
NitratespHChlore
SOURN (LE)100/100
NitratespHChlore
SULNIAC100/100
NitratespHChlore
SURZUR100/100
NitratespHChlore
TAUPONT100/100
NitratespHChlore
THEHILLAC100/100
NitratespHChlore
THEIX-NOYALO100/100
NitratespHChlore
TOUR-DU-PARC (LE)92/100
NitratespHChlore
TREAL92/100
NitratespHChlore
TREDION100/100
NitratespHChlore
TREFFLEAN100/100
NitratespHChlore
TREHORENTEUC92/100
NitratespHChlore
TRINITE-PORHOET (LA)100/100
NitratespHChlore
TRINITE-SUR-MER (LA)92/100
NitratespHChlore
TRINITE-SURZUR (LA)100/100
NitratespHChlore
VAL D'OUST93/100
NitratespHChlore
VANNES88/100
NitratespHChlore
VRAIE-CROIX (LA)100/100
NitratespHChlore
Rivières
Source : Hub'Eau qualité_rivieres · 128 stations
AFF à QUELNEUC62/100
| O2 saturation | 88.7% | 11/12/2025 | |
| Phosphore | 0.074mg/L | 11/12/2025 | |
| Nitrates | 32.0mg/L | 11/12/2025 | |
| pH | 7.0pH | 11/12/2025 | |
| Temp. eau | 11.0°C | 11/12/2025 |
VILAINE à RIEUX69/100
| Conductivité | 8.7µS/cm | 11/12/2025 | |
| Nitrates | 23.0mg/L | 11/12/2025 | |
| Temp. eau | 11.5°C | 11/12/2025 | |
| O2 saturation | 78.2% | 11/12/2025 | |
| MES | 293.0mg/L | 11/12/2025 |
EVEL à GUENIN62/100
| MES | 246.0mg/L | 11/12/2025 | |
| Phosphore | 0.084mg/L | 11/12/2025 | |
| Temp. eau | 10.4°C | 11/12/2025 | |
| pH | 7.1pH | 11/12/2025 | |
| Ammonium | 5.8mg/L | 11/12/2025 |
TARUN à PLUMELIN62/100
| Ammonium | 4.9mg/L | 11/12/2025 | |
| Temp. eau | 10.4°C | 11/12/2025 | |
| MES | 211.0mg/L | 11/12/2025 | |
| Conductivité | 10.6µS/cm | 11/12/2025 | |
| Phosphore | 0.056mg/L | 11/12/2025 |
LA DEMI-VILLE A PLUVIGNER69/100
| Nitrates | 24.0mg/L | 11/12/2025 | |
| O2 saturation | 91.8% | 11/12/2025 | |
| Ammonium | 7.1mg/L | 11/12/2025 | |
| Phosphore | 0.031mg/L | 11/12/2025 | |
| pH | 6.6pH | 11/12/2025 |
KERGONAN à INZINZAC-LOCHRIST62/100
| pH | 6.7pH | 11/12/2025 | |
| Phosphore | 0.049mg/L | 11/12/2025 | |
| O2 saturation | 89.4% | 11/12/2025 | |
| Temp. eau | 10.8°C | 11/12/2025 | |
| Conductivité | 10.0µS/cm | 11/12/2025 |
PONT DU ROC'H ou GOAH GUILLERM à NOSTANG69/100
| pH | 6.6pH | 11/12/2025 | |
| O2 saturation | 88.8% | 11/12/2025 | |
| Conductivité | 10.0µS/cm | 11/12/2025 | |
| Nitrates | 21.0mg/L | 11/12/2025 | |
| Temp. eau | 10.3°C | 11/12/2025 |
MARZAN à MARZAN62/100
| Ammonium | 7.8mg/L | 11/12/2025 | |
| Conductivité | 10.3µS/cm | 11/12/2025 | |
| Nitrates | 39.0mg/L | 11/12/2025 | |
| MES | 303.0mg/L | 11/12/2025 | |
| pH | 6.9pH | 11/12/2025 |
BLAVET à LANGUIDIC69/100
| Conductivité | 11.9µS/cm | 11/12/2025 | |
| Nitrates | 24.0mg/L | 11/12/2025 | |
| Ammonium | 6.3mg/L | 11/12/2025 | |
| Phosphore | 0.087mg/L | 11/12/2025 | |
| Temp. eau | 10.4°C | 11/12/2025 |
RAU DE KERDREAN À CLEGUEREC80/100
| MES | 160.0mg/L | 09/12/2025 | |
| pH | 7.0pH | 09/12/2025 | |
| Temp. eau | 11.7°C | 09/12/2025 | |
| Conductivité | 10.1µS/cm | 09/12/2025 | |
| O2 saturation | 93.7% | 09/12/2025 |
RAU BIEUZY à MELRAND69/100
| pH | 6.9pH | 09/12/2025 | |
| Nitrates | 23.0mg/L | 09/12/2025 | |
| Temp. eau | 11.8°C | 09/12/2025 | |
| Phosphore | 0.08mg/L | 09/12/2025 | |
| Ammonium | 9.3mg/L | 09/12/2025 |
RAU DE LA PIERRE FENDUE A SOURN (LE)56/100
| MES | 155.0mg/L | 09/12/2025 | |
| O2 saturation | 94.3% | 09/12/2025 | |
| Phosphore | 0.059mg/L | 09/12/2025 | |
| Ammonium | 7.7mg/L | 09/12/2025 | |
| Conductivité | 10.1µS/cm | 09/12/2025 |
SARRE à MELRAND69/100
| MES | 137.0mg/L | 09/12/2025 | |
| Conductivité | 10.8µS/cm | 09/12/2025 | |
| Temp. eau | 11.6°C | 09/12/2025 | |
| Ammonium | 13.0mg/L | 09/12/2025 | |
| pH | 6.8pH | 09/12/2025 |
OUST à SAINT-JEAN-LA-POTERIE69/100
| MES | 226.0mg/L | 09/12/2025 | |
| Phosphore | 0.2mg/L | 09/12/2025 | |
| Temp. eau | 11.4°C | 09/12/2025 | |
| Ammonium | 8.1mg/L | 09/12/2025 | |
| Nitrates | 20.0mg/L | 09/12/2025 |
BLAVET à NEULLIAC69/100
| MES | 159.0mg/L | 09/12/2025 | |
| O2 saturation | 95.7% | 09/12/2025 | |
| Nitrates | 16.0mg/L | 09/12/2025 | |
| Ammonium | 6.4mg/L | 09/12/2025 | |
| Conductivité | 10.6µS/cm | 09/12/2025 |
CANAL DE NANTES À BREST à GUELTAS75/100
| pH | 7.1pH | 08/12/2025 | |
| Ammonium | 4.4mg/L | 08/12/2025 | |
| Temp. eau | 11.1°C | 08/12/2025 | |
| Phosphore | 0.038mg/L | 08/12/2025 | |
| O2 saturation | 98.6% | 08/12/2025 |
RAU D'ESTUER À BREHAN56/100
| Ammonium | 12.0mg/L | 08/12/2025 | |
| Phosphore | 0.264mg/L | 08/12/2025 | |
| Nitrates | 32.0mg/L | 08/12/2025 | |
| Temp. eau | 12.4°C | 08/12/2025 | |
| O2 saturation | 93.7% | 08/12/2025 |
YVEL à LOYAT62/100
| Temp. eau | 7.3°C | 05/12/2025 | |
| pH | 7.3pH | 05/12/2025 | |
| Nitrates | 27.0mg/L | 05/12/2025 | |
| O2 saturation | 92.9% | 05/12/2025 | |
| MES | 275.0mg/L | 05/12/2025 |
OUST à PLEUGRIFFET62/100
| Nitrates | 26.0mg/L | 05/12/2025 | |
| MES | 258.0mg/L | 05/12/2025 | |
| Ammonium | 6.3mg/L | 05/12/2025 | |
| Phosphore | 0.07mg/L | 05/12/2025 | |
| Conductivité | 11.7µS/cm | 05/12/2025 |
OUST à SAINT-MARTIN69/100
| Conductivité | 11.2µS/cm | 05/12/2025 | |
| Ammonium | 8.0mg/L | 05/12/2025 | |
| MES | 247.0mg/L | 05/12/2025 | |
| Phosphore | 0.076mg/L | 05/12/2025 | |
| Nitrates | 19.0mg/L | 05/12/2025 |
Nappes phréatiques
Source : Hub'Eau niveaux_nappes · 12 stations
Ploërdut
Niveau : N.C.—
Bieuzy
Niveau : N.C.—
Saint-Jacut-les-Pins
Niveau : N.C.—
Grand-Champ
Niveau : N.C.—
Guer
Niveau : N.C.—
Bignan
Niveau : N.C.—
Baud
Niveau : N.C.—
Theix-Noyalo
Niveau : N.C.—
Ploërmel
Niveau : N.C.—
Pontivy
Niveau : N.C.—
Missiriac
Niveau : N.C.—
Hennebont
Niveau : N.C.—