Bretagne · Département 56
Morbihan
250 communes suivies
146 stations rivières
12 stations nappes
Mis à jour le 07/09/2026 à 17:29
98
/100
Bonne qualité
Eau potable
Eau potable
Source : ARS via Hub'Eau · 250 communes
≥80
50-79
<50
ALLAIRE100/100
NitratespHChlore
AMBON92/100
NitratespHChlore
ARRADON92/100
NitratespHChlore
ARZAL100/100
NitratespHChlore
ARZON100/100
NitratespHChlore
AUGAN88/100
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
BOHAL92/100
NitratespHChlore
BONO (LE)100/100
NitratespHChlore
BRANDERION100/100
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
CAMPENEAC100/100
NitratespHChlore
CARENTOIR100/100
NitratespHChlore
CARNAC100/100
NitratespHChlore
CARO92/100
NitratespHChlore
CAUDAN100/100
NitratespHChlore
CHAPELLE-NEUVE (LA)100/100
NitratespHChlore
CLEGUER100/100
NitratespHChlore
CLEGUEREC93/100
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
FEREL100/100
NitratespHChlore
FORGES DE LANOUEE92/100
NitratespHChlore
FOUGERETS (LES)92/100
NitratespHChlore
GACILLY (LA)94/100
NitratespHChlore
GAVRES100/100
NitratespHChlore
GESTEL100/100
NitratespHChlore
GOURHEL92/100
NitratespHChlore
GOURIN100/100
NitratespHChlore
GRAND-CHAMP100/100
NitratespHChlore
GREE-SAINT-LAURENT (LA)92/100
NitratespHChlore
GROIX100/100
NitratespHChlore
GUEGON100/100
NitratespHChlore
GUEHENNO92/100
NitratespHChlore
GUELTAS100/100
NitratespHChlore
GUEMENE-SUR-SCORFF100/100
NitratespHChlore
GUENIN100/100
NitratespHChlore
GUER100/100
NitratespHChlore
GUERN92/100
NitratespHChlore
GUERNO (LE)92/100
NitratespHChlore
GUIDEL100/100
NitratespHChlore
GUILLAC92/100
NitratespHChlore
GUILLIERS100/100
NitratespHChlore
GUISCRIFF100/100
NitratespHChlore
HELLEAN100/100
NitratespHChlore
HENNEBONT100/100
NitratespHChlore
HEZO (LE)92/100
NitratespHChlore
HOEDIC100/100
NitratespHChlore
ILE-AUX-MOINES92/100
NitratespHChlore
ILE-D'ARZ92/100
NitratespHChlore
ILE-D'HOUAT100/100
NitratespHChlore
INGUINIEL100/100
NitratespHChlore
INZINZAC-LOCHRIST92/100
NitratespHChlore
JOSSELIN94/100
NitratespHChlore
KERFOURN100/100
NitratespHChlore
KERGRIST100/100
NitratespHChlore
KERNASCLEDEN92/100
NitratespHChlore
KERVIGNAC100/100
NitratespHChlore
LANDAUL100/100
NitratespHChlore
LANDEVANT100/100
NitratespHChlore
LANESTER100/100
NitratespHChlore
LANGOELAN100/100
NitratespHChlore
LANGONNET100/100
NitratespHChlore
LANGUIDIC94/100
NitratespHChlore
LANTILLAC92/100
NitratespHChlore
LANVAUDAN92/100
NitratespHChlore
LANVENEGEN100/100
NitratespHChlore
LARMOR-BADEN92/100
NitratespHChlore
LARMOR-PLAGE100/100
NitratespHChlore
LARRE92/100
NitratespHChlore
LAUZACH92/100
NitratespHChlore
LIGNOL100/100
NitratespHChlore
LIMERZEL100/100
NitratespHChlore
LIZIO100/100
NitratespHChlore
LOCMALO100/100
NitratespHChlore
LOCMARIA100/100
NitratespHChlore
LOCMARIA-GRAND-CHAMP100/100
NitratespHChlore
LOCMARIAQUER83/100
NitratespHChlore
LOCMINE100/100
NitratespHChlore
LOCMIQUELIC92/100
NitratespHChlore
LOCOAL-MENDON100/100
NitratespHChlore
LOCQUELTAS100/100
NitratespHChlore
LORIENT100/100
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
MERLEVENEZ100/100
NitratespHChlore
MESLAN100/100
NitratespHChlore
MEUCON100/100
NitratespHChlore
MISSIRIAC86/100
NitratespHChlore
MOHON100/100
NitratespHChlore
MOLAC100/100
NitratespHChlore
MONTENEUF100/100
NitratespHChlore
MONTERBLANC100/100
NitratespHChlore
MONTERTELOT88/100
NitratespHChlore
MOREAC100/100
NitratespHChlore
MOUSTOIR-AC100/100
NitratespHChlore
MUZILLAC94/100
NitratespHChlore
NEANT-SUR-YVEL100/100
NitratespHChlore
NEULLIAC100/100
NitratespHChlore
NIVILLAC100/100
NitratespHChlore
NOSTANG92/100
NitratespHChlore
NOYAL-MUZILLAC92/100
NitratespHChlore
NOYAL-PONTIVY100/100
NitratespHChlore
PAIMPONT86/100
NitratespHChlore
PALAIS (LE)100/100
NitratespHChlore
PEAULE94/100
NitratespHChlore
PEILLAC92/100
NitratespHChlore
PENESTIN100/100
NitratespHChlore
PERSQUEN100/100
NitratespHChlore
PLAUDREN100/100
NitratespHChlore
PLESCOP100/100
NitratespHChlore
PLEUCADEUC100/100
NitratespHChlore
PLEUGRIFFET93/100
NitratespHChlore
PLOEMEL100/100
NitratespHChlore
PLOEMEUR100/100
NitratespHChlore
PLOERDUT100/100
NitratespHChlore
PLOEREN100/100
NitratespHChlore
PLOERMEL94/100
NitratespHChlore
PLOUAY100/100
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-SCORFF100/100
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
RADENAC100/100
NitratespHChlore
REGUINY94/100
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
RUFFIAC92/100
NitratespHChlore
SAINT (LE)100/100
NitratespHChlore
SAINT-ABRAHAM83/100
NitratespHChlore
SAINT-AIGNAN92/100
NitratespHChlore
SAINT-ALLOUESTRE100/100
NitratespHChlore
SAINT-ARMEL100/100
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-GUYOMARD100/100
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-MARCEL92/100
NitratespHChlore
SAINT-MARTIN-SUR-OUST92/100
NitratespHChlore
SAINT-NICOLAS-DU-TERTRE83/100
NitratespHChlore
SAINT-NOLFF94/100
NitratespHChlore
SAINT-PERREUX100/100
NitratespHChlore
SAINT-PHILIBERT100/100
NitratespHChlore
SAINT-PIERRE-QUIBERON92/100
NitratespHChlore
SAINT-SERVANT83/100
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-HELENE92/100
NitratespHChlore
SARZEAU94/100
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-NOYALO94/100
NitratespHChlore
TOUR-DU-PARC (LE)92/100
NitratespHChlore
TREAL92/100
NitratespHChlore
TREDION100/100
NitratespHChlore
TREFFLEAN100/100
NitratespHChlore
TREHORENTEUC100/100
NitratespHChlore
TRINITE-PORHOET (LA)100/100
NitratespHChlore
TRINITE-SUR-MER (LA)92/100
NitratespHChlore
TRINITE-SURZUR (LA)100/100
NitratespHChlore
VAL D'OUST94/100
NitratespHChlore
VANNES100/100
NitratespHChlore
VRAIE-CROIX (LA)100/100
NitratespHChlore
Rivières
Source : Hub'Eau qualité_rivieres · 146 stations
BLAVET à LANGUIDIC62/100
| Nitrates | 25.8mg/L | 30/04/2026 | |
| Phosphore | 0.042mg/L | 30/04/2026 | |
| Ammonium | 3.1mg/L | 30/04/2026 | |
| Temp. eau | 16.1°C | 30/04/2026 | |
| MES | 191.0mg/L | 30/04/2026 |
RAU DE PENERF à SURZUR69/100
| O2 saturation | 75.7% | 29/04/2026 | |
| pH | 6.8pH | 29/04/2026 | |
| Phosphore | 0.178mg/L | 29/04/2026 | |
| Temp. eau | 14.0°C | 29/04/2026 | |
| Nitrates | 17.4mg/L | 29/04/2026 |
PONT DU ROC'H ou GOAH GUILLERM à NOSTANG62/100
| Ammonium | 3.7mg/L | 29/04/2026 | |
| Conductivité | 10.5µS/cm | 29/04/2026 | |
| MES | 196.0mg/L | 29/04/2026 | |
| Nitrates | 25.8mg/L | 29/04/2026 | |
| Phosphore | 0.054mg/L | 29/04/2026 |
VILAINE à RIEUX69/100
| MES | 513.0mg/L | 29/04/2026 | |
| Nitrates | 21.6mg/L | 29/04/2026 | |
| Temp. eau | 16.9°C | 29/04/2026 | |
| O2 saturation | 112.4% | 29/04/2026 | |
| Ammonium | 4.4mg/L | 29/04/2026 |
RAU D'AURAY ou LOC'H à BRECH62/100
| MES | 191.0mg/L | 29/04/2026 | |
| pH | 6.8pH | 29/04/2026 | |
| Ammonium | 2.9mg/L | 29/04/2026 | |
| O2 saturation | 99.7% | 29/04/2026 | |
| Conductivité | 10.1µS/cm | 29/04/2026 |
RAU DU MOULIN DU PALAIS à LANGUIDIC62/100
| O2 saturation | 93.2% | 29/04/2026 | |
| pH | 7.0pH | 29/04/2026 | |
| Conductivité | 9.7µS/cm | 29/04/2026 | |
| Nitrates | 25.2mg/L | 29/04/2026 | |
| Phosphore | 0.065mg/L | 29/04/2026 |
OUST à PLEUGRIFFET62/100
| Phosphore | 0.038mg/L | 27/04/2026 | |
| pH | 7.4pH | 27/04/2026 | |
| Ammonium | 2.9mg/L | 27/04/2026 | |
| O2 saturation | 98.2% | 27/04/2026 | |
| Nitrates | 35.5mg/L | 27/04/2026 |
SEDON à GUEGON62/100
| pH | 7.5pH | 27/04/2026 | |
| Ammonium | 3.5mg/L | 27/04/2026 | |
| Temp. eau | 13.3°C | 27/04/2026 | |
| Nitrates | 34.1mg/L | 27/04/2026 | |
| O2 saturation | 100.2% | 27/04/2026 |
RAU RAHUN A CARENTOIR62/100
| Ammonium | 4.5mg/L | 24/04/2026 | |
| Phosphore | 0.105mg/L | 24/04/2026 | |
| MES | 254.0mg/L | 24/04/2026 | |
| Conductivité | 9.3µS/cm | 24/04/2026 | |
| pH | 7.5pH | 24/04/2026 |
RAU DE MALVILLE à PLOERMEL56/100
| Ammonium | 8.8mg/L | 24/04/2026 | |
| Phosphore | 0.122mg/L | 24/04/2026 | |
| Temp. eau | 14.0°C | 24/04/2026 | |
| Nitrates | 12.7mg/L | 24/04/2026 | |
| O2 saturation | 9.3% | 24/04/2026 |
YVEL à LOYAT62/100
| O2 saturation | 91.5% | 24/04/2026 | |
| Temp. eau | 13.0°C | 24/04/2026 | |
| Phosphore | 0.074mg/L | 24/04/2026 | |
| Ammonium | 4.7mg/L | 24/04/2026 | |
| Conductivité | 9.8µS/cm | 24/04/2026 |
RAU DE LA CHATOUILLETTE À SERENT62/100
| Conductivité | 10.7µS/cm | 24/04/2026 | |
| pH | 7.4pH | 24/04/2026 | |
| MES | 225.0mg/L | 24/04/2026 | |
| Ammonium | 2.2mg/L | 24/04/2026 | |
| Phosphore | 0.053mg/L | 24/04/2026 |
OUST à SAINT-MARTIN62/100
| Phosphore | 0.04mg/L | 24/04/2026 | |
| MES | 257.0mg/L | 24/04/2026 | |
| Nitrates | 30.7mg/L | 24/04/2026 | |
| Temp. eau | 15.7°C | 24/04/2026 | |
| Ammonium | 3.6mg/L | 24/04/2026 |
NINIAN à TAUPONT62/100
| pH | 7.7pH | 24/04/2026 | |
| Phosphore | 0.053mg/L | 24/04/2026 | |
| Conductivité | 10.0µS/cm | 24/04/2026 | |
| Temp. eau | 12.6°C | 24/04/2026 | |
| Nitrates | 36.0mg/L | 24/04/2026 |
CLAIE à PLEUCADEUC62/100
| pH | 7.3pH | 24/04/2026 | |
| Ammonium | 3.5mg/L | 24/04/2026 | |
| MES | 196.0mg/L | 24/04/2026 | |
| Conductivité | 10.1µS/cm | 24/04/2026 | |
| Phosphore | 0.05mg/L | 24/04/2026 |
AFF à QUELNEUC69/100
| Phosphore | 0.111mg/L | 24/04/2026 | |
| O2 saturation | 96.0% | 24/04/2026 | |
| Nitrates | 18.5mg/L | 24/04/2026 | |
| pH | 7.7pH | 24/04/2026 | |
| MES | 239.0mg/L | 24/04/2026 |
RAU DE SAINT-NIEL À PONTIVY62/100
| O2 saturation | 94.8% | 21/04/2026 | |
| Conductivité | 10.5µS/cm | 21/04/2026 | |
| Phosphore | 0.05mg/L | 21/04/2026 | |
| Ammonium | 2.8mg/L | 21/04/2026 | |
| Temp. eau | 11.0°C | 21/04/2026 |
TARUN à PLUMELIN62/100
| MES | 300.0mg/L | 21/04/2026 | |
| Temp. eau | 11.6°C | 21/04/2026 | |
| Ammonium | 3.3mg/L | 21/04/2026 | |
| pH | 7.4pH | 21/04/2026 | |
| Conductivité | 10.8µS/cm | 21/04/2026 |
EVEL à GUENIN62/100
| pH | 7.2pH | 21/04/2026 | |
| Temp. eau | 12.5°C | 21/04/2026 | |
| MES | 239.0mg/L | 21/04/2026 | |
| Phosphore | 0.048mg/L | 21/04/2026 | |
| Ammonium | 2.8mg/L | 21/04/2026 |
RAU DE KERDREAN À CLEGUEREC69/100
| Ammonium | 3.2mg/L | 21/04/2026 | |
| O2 saturation | 92.5% | 21/04/2026 | |
| pH | 7.0pH | 21/04/2026 | |
| Phosphore | 0.018mg/L | 21/04/2026 | |
| MES | 140.0mg/L | 21/04/2026 |
Nappes phréatiques
Source : Hub'Eau niveaux_nappes · 12 stations
Grand-Champ
Niveau : N.C.—
Ploërdut
Niveau : N.C.—
Bieuzy
Niveau : N.C.—
Saint-Jacut-les-Pins
Niveau : N.C.—
Bignan
Niveau : N.C.—
Pontivy
Niveau : N.C.—
Missiriac
Niveau : N.C.—
Hennebont
Niveau : N.C.—
Guer
Niveau : N.C.—
Theix-Noyalo
Niveau : N.C.—
Baud
Niveau : N.C.—
Ploërmel
Niveau : N.C.—