Public Water Systems
3,215 active public water systems in MD, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
| AVA WANAS MONTESSORI SCHOOL | SYKESVILLE, MD | 45 | 32 | — |
| CARROLLTON CHURCH OF GOD | FINKSBURG, MD | 45 | 2 | — |
| FAITH COMMUNITY BIBLE CHURCH | FORK, MD | 45 | 1 | — |
| EMMANUEL BAUST UCC | WESTMINSTER, MD | 45 | 10 | — |
| ALL SMILES DENTAL CARE | WESTMINSTER, MD | 45 | 0 | — |
| NORTH EAST QUARRY | NORTH EAST, MD | 45 | 35 | — |
| VICTORIOUS KIDS / MASTER'S CHILD CHURCH | INDIAN HEAD, MD | 45 | 30 | — |
| MARBURY CHURCH OF GOD | MARBURY, MD | 45 | 52 | — |
| LIFESTREAM CHURCH OF NAZARENE | WALDORF, MD | 45 | 2 | — |
| COUNTRYSIDE CHRISTIAN CHURCH | CAMBRIDGE, MD | 45 | 90 | — |
| MISS LORETTA'S EARLY LEARNING CENTER | KEYMAR, MD | 45 | 1 | — |
| BECKLEYS CAMPING CENTER | THURMONT, MD | 45 | 22 | — |
| GREEN VALLEY ANIMAL HOSPITAL | LJAMSVILLE, MD | 45 | 0 | — |
| NEW MARKET GRANGE #362 | MONROVIA, MD | 45 | 6 | — |
| SOD RUN WASTEWATER TREATMENT PLANT | BEL AIR, MD | 45 | 52 | — |
| S.H.A. - CHURCHVILLE MAINTENANCE SHOP | MILLERSVILLE, MD | 45 | 1 | — |
| TRINITY FREEWILL BAPTIST CHURCH | DARLINGTON, MD | 45 | 4 | — |
| 31850 MILLINGTON ROAD | MILLINGTON, MD | 45 | 3 | — |
| PLACID HARBOR AND IAM EDUC CENTER | HOLLYWOOD, MD | 45 | 0 | — |
| SEABREEZE RESTAURANT | MECHANICSVILLE, MD | 45 | 0 | — |
| SMOKE HOUSE BBQ | MECHANICSVILLE, MD | 45 | 0 | — |
| AG CENTER -CO-OP EXTENSION OFFICE | MD | 45 | 19 | — |
| CHRISTIAN COMMUNITY CHILD CARE CENTER | SALISBURY, MD | 45 | 18 | — |
| ISLAND RESORT CAMPGROUND | NEWARK, MD | 45 | 9 | — |
| SILVER OAK ACADEMY | KEYMAR, MD | 44 | 11 | — |
| RELAX INN | MD | 44 | 16 | — |
| SWANN HAVEN MOBILE HOME PARK | CHESTER, MD | 44 | 280 | — |
| CALVARY TEMPLE | GAMBRILLS, MD | 44 | 0 | — |
| OUR LADY OF GRACE CHURCH | PARKTON, MD | 44 | 96 | — |
| FAIRVIEW UM CHURCH | PHOENIX, MD | 44 | 1 | — |
| DEJON VINEYARD | HYDES, MD | 44 | 3 | — |
| SHIP'S POINT BUSINESS PARK LLC | LUSBY, MD | 44 | 4 | — |
| WINFIELD MEDICAL CENTER | SYKESVILLE, MD | 44 | 4 | — |
| RED RUN CONDOS | MCHENRY, MD | 44 | 3 | — |
| FAST EDDIES PIT BEEF | FALLSTON, MD | 44 | 5 | — |
| WILLOW SPRINGS GOLF COURSE | CATONSVILLE, MD | 44 | 13 | — |
| BUREAU OF HIGHWAYS COOKSVILLE | ELLICOTT CITY, MD | 44 | 2 | — |
| EASTMAN SPECIALTIES CORPORATION | KINGSPORT, MD | 44 | 37 | — |
| RIDGE RIDER - WELL A | WITCHITA KANSAS, MD | 43 | 12 | — |
| LITTLE ORLEANS GROCERY/ BILLS PLACE | LITTLE ORLEANS, MD | 43 | 24 | — |
| KIDS FARM CHILDCARE - DAVIDSONVILLE | DAVIDSONVILLE, MD | 43 | 76 | — |
| THE PICANTILLO | PASADENA, MD | 43 | 13 | — |
| PARK INN INC | WESTMINSTER, MD | 43 | 1 | — |
| DOUGH RUN ( FORMERLY MONKTON GRILLE) | ODENTON, MD | 43 | 2 | — |
| FAIRVIEW A.M.E. CHURCH | FOREST HILL, MD | 43 | 6 | — |
| FORT FREDERICK STATE PARK - PICNIC AREA | BIG POOL, MD | 43 | 2 | — |
| OLDTOWN VOLUNTEER FIRE DEPARTMENT | OLDTOWN, MD | 42 | 3 | — |
| GINGERVILLE COMMUNITY POOL | EDGEWATER, MD | 42 | 5 | — |
| SHADY SIDE SOFT SERVE | SHADY SIDE, MD | 42 | 8 | — |
| WOODDELL AND PASSARO DENTAL | DAVIDSONVILLE, MD | 42 | 1 | — |