Largest water suppliers
Lead is the LCR 90th-percentile result; a value above 0.015 mg/L exceeds the
EPA action level. “—” means no lead sample is on file for that supplier.
| Supplier | City | Population | Lead (p90) |
|---|---|---|---|
| Washington Suburban Sanitary Commission | — | 1,900,000 | 0.0000 mg/L |
| City of Baltimore | — | 1,600,000 | 0.0027 mg/L |
| Glen Burnie-Broadneck | Millersville | 290,606 | 0.0000 mg/L |
| Howard County D.P.W. Distribution | — | 286,158 | 0.0030 mg/L |
| Harford County D.P.W. | Abingdon | 104,567 | 0.0000 mg/L |
| City of Hagerstown | Hagerstown | 92,200 | 0.0008 mg/L |
| New Design - Frederick County | Frederick | 74,911 | 0.0030 mg/L |
| Crofton-Odenton | Millersville | 62,986 | 0.0000 mg/L |
| Fort George G. Meade | Fort Meade | 62,234 | 0.0000 mg/L |
| City of Frederick | Frederick | 54,000 | 0.0011 mg/L |
| Lexington Park | California | 43,030 | 0.0000 mg/L |
| City of Westminster | Westminster | 35,256 | 0.0000 mg/L |
| City of Annapolis | Annapolis | 35,000 | 0.0063 mg/L |
| City of Salisbury | Salisbury | 30,343 | 0.0000 mg/L |
| Town of Ocean City | Ocean City | 30,000 | 0.0028 mg/L |
| City of Cumberland | Cumberland | 27,039 | 0.0010 mg/L |
| Broad Creek | Millersville | 26,033 | 0.0000 mg/L |
| City of Bowie | Bowie | 25,000 | 0.0000 mg/L |
| Freedom District | Westminster | 24,867 | 0.0000 mg/L |
| Patuxent Naval Air Station (Navfac-Wash) | Patuxent River | 22,000 | 0.0000 mg/L |
| City of Aberdeen | Aberdeen | 18,006 | 0.0000 mg/L |
| Easton Utilities | Easton | 17,357 | 0.0021 mg/L |
| Town of Elkton | Elkton | 15,625 | 0.0000 mg/L |
| Chapel Hill - Aberdeen Proving Grounds | Aberdeen | 15,000 | 0.0000 mg/L |
| City of Cambridge Water | Cambridge | 15,000 | 0.0041 mg/L |
| City of Havre De Grace | Havre De Grace | 14,000 | 0.0020 mg/L |
| Maryland American Water Company | Bel Air | 13,200 | 0.0020 mg/L |
| Ocean Pines | Berlin | 11,890 | 0.0033 mg/L |
| Town of La Plata | La Plata | 11,535 | 0.0000 mg/L |
| City of Frostburg | Frostburg | 11,000 | 0.0000 mg/L |
| Town of Mount Airy | Mount Airy | 9,890 | 0.0014 mg/L |
| Chesapeake Ranch Estates | Lusby | 9,500 | 0.0000 mg/L |
| Stevensville | Stevensville | 9,155 | 0.0000 mg/L |
| U.S. Naval Academy | Annapolis | 8,700 | 0.0000 mg/L |
| Town of North East | North East | 8,600 | 0.0010 mg/L |
| Town of Walkersville | Walkersville | 8,440 | 0.0000 mg/L |
| Fort Detrick | Frederick | 7,900 | 0.0000 mg/L |
| City of Brunswick | Brunswick | 7,312 | 0.0000 mg/L |
| City of Taneytown | Taneytown | 6,750 | 0.0030 mg/L |
| Town of Hampstead | Hampstead | 6,600 | 0.0020 mg/L |
| Town of Thurmont | Thurmont | 6,200 | 0.0040 mg/L |
| Town of Poolesville | Poolesville | 6,005 | 0.0050 mg/L |
| Mystic Harbour | Berlin | 5,945 | 0.0023 mg/L |
| City of Fruitland | Fruitland | 5,907 | 0.0058 mg/L |
| Eastern Region Allegany Distrib. System | Cumberland | 5,703 | — |
| Lavale Sanitary Commission | Lavale | 5,500 | 0.0010 mg/L |
| Maryland American Water--Severn System | — | 5,447 | 0.0000 mg/L |
| Town of Chestertown | Chestertown | 5,400 | 0.0012 mg/L |
| Town of Chesapeake Beach | Chesapeake Beach | 5,000 | 0.0000 mg/L |
| Midland-Lonaconing | Lonaconing | 5,000 | 0.0010 mg/L |
| Town of Leonardtown | Leonardtown | 5,000 | 0.0000 mg/L |
| Western Region Allegany Distrib. System | Cumberland | 4,955 | — |
| Town of Manchester | Manchester | 4,954 | 0.0012 mg/L |
| Town of Denton | Denton | 4,500 | 0.0000 mg/L |
| Town of Delmar | Delmar | 4,500 | 0.0018 mg/L |
| Town of Berlin | Berlin | 4,500 | 0.0046 mg/L |
| Town of Perryville | Perryville | 4,413 | 0.0000 mg/L |
| Prince Frederick | Prince Frederick | 4,371 | 0.0000 mg/L |
| Town of Middletown | Middletown | 4,288 | 0.0020 mg/L |
| Boonsboro - Keedysville | Boonsboro | 4,250 | 0.0033 mg/L |
| City of Pocomoke City | Pocomoke City | 4,100 | 0.0000 mg/L |
| Town of Indian Head | Indian Head | 4,100 | 0.0000 mg/L |
| The Provinces | — | 3,991 | 0.0000 mg/L |
| Solomons | Prince Frederick | 3,811 | 0.0000 mg/L |
| Town of Charlestown | — | 3,791 | 0.0020 mg/L |
| Town of Centreville | Centreville | 3,322 | 0.0050 mg/L |
| Naval Support Facility, Indian Head | Indian Head | 3,321 | 0.0057 mg/L |
| Town of Princess Anne | Princess Anne | 3,300 | 0.0031 mg/L |
| Country Lakes | California | 3,016 | 0.0000 mg/L |
| Town of North Beach | North Beach | 3,000 | 0.0000 mg/L |
| Town of Mountain Lake Park | Oakland | 3,000 | 0.0016 mg/L |
| City of Crisfield | Chrisfield | 2,976 | 0.0010 mg/L |
| Town of Emmitsburg | Emmitsburg | 2,921 | 0.0000 mg/L |
| Cedar Cove | California | 2,728 | 0.0000 mg/L |
| Town of St. Michaels | St Michaels | 2,650 | 0.0018 mg/L |
| Bel Air - Pinto Distribution System | — | 2,614 | — |
| Fountaindale South | Frederick | 2,610 | 0.0010 mg/L |
| Town of Smithsburg Distribution System | — | 2,500 | 0.0160 mg/L |
| Town of Federalsburg | Federalsburg | 2,450 | 0.0025 mg/L |
| Wakefield Valley | Westminster | 2,436 | 0.0000 mg/L |
| Town of Snow Hill | Snow Hill | 2,409 | 0.0000 mg/L |
| Town of Williamsport Distribution System | Williamsport | 2,400 | — |
| Lake Village Townhomes | Severn | 2,400 | 0.0053 mg/L |
| Greenridge Subdivision | — | 2,271 | 0.0000 mg/L |
| Herald Harbor | Millersville | 2,241 | 0.0000 mg/L |
| Town of Rising Sun | Elkton | 2,200 | 0.0000 mg/L |
| Town of Westernport | Westernport | 2,200 | 0.0000 mg/L |
| Saint Marys College | — | 2,200 | 0.0000 mg/L |
| Town of Hurlock | Hurlock | 2,150 | 0.0067 mg/L |
| Johns Hopkins University | — | 2,058 | — |
| Delmar Utility Comm (Tn of Delmar) | Delmar | 2,027 | 0.0020 mg/L |
| Perry Point V.A. Medical Center | Perry Point | 2,000 | 0.0000 mg/L |
| Beaches Water Co-Operative | St. Leonard | 2,000 | 0.0015 mg/L |
| Town of Hancock | Hancock | 1,921 | 0.0024 mg/L |
| Mount Saint Marys University | Emmitsburg | 1,900 | 0.0000 mg/L |
| Town of Greensboro | Greensboro | 1,878 | 0.0000 mg/L |
| Town of Oakland | Oakland | 1,850 | 0.0017 mg/L |
| Potomac Heights | Indian Head | 1,800 | 0.0000 mg/L |
| Swann Keys | Fenwick Island | 1,764 | 0.0018 mg/L |
| Town of Rock Hall | Rock Hall | 1,750 | 0.0035 mg/L |