Lead Pipe Map

Lead pipes in Maryland

Maryland's 460 community water systems reported 109 lead and 3,027 galvanized-requiring-replacement service lines, plus 563,397 of unknown material. That ranks #40 among states for confirmed lead lines.

109Lead
3,027Galvanized, replace
563,397Unknown
37Systems with lead

0.2% of the service lines Maryland utilities reported are lead or galvanized requiring replacement, well below the national share of 3.1%. 34% are still unidentified (national: 21%). The largest counts are in Washington Suburban Sanitary Commission (1,285), Town of Denton (596), City of Baltimore (432). 15 systems haven't reported counts yet.

Since 2025 Q1, reported lead and galvanized lines in Maryland went from 3,279 to 3,136 (down 143). See which systems made the most progress.

Systems with confirmed lead lines (37)

Water systemLeadGalv.Unknown% leadPeople
Washington Suburban Sanitary CommissionMontgomery County81,27757,1210.2%1,900,000
Town of DentonCaroline County0596634%4,848
City of BaltimoreBaltimore City County47385335,694<0.1%1,600,000
City of FrederickFrederick County201355,8040.7%54,000
Fort George G. MeadeAnne Arundel County0881443.0%62,234
Town of DelmarWicomico County3814816.2%4,500
Boonsboro - KeedysvilleWashington County0737203.9%4,250
Lavale Sanitary CommissionAllegany County0581,6272.4%5,500
Glen Burnie-BroadneckAnne Arundel County0488,124<0.1%290,606
Patuxent Naval Air Station (Navfac-Wash)St. Mary'S County0321505.8%22,000
Town of Mount AiryCarroll County1289140.8%9,890
City of AnnapolisAnne Arundel County0276,9430.2%35,000
Town of MyersvilleFrederick County026364.0%2,000
Town of PrestonCaroline County1201666.1%750
Naval Support Facility, Indian HeadCharles County021114.4%3,321
Town of Funkstown Distribution SystemWashington County19183.3%1,300
City of TaneytownCarroll County0197410.6%6,750
Town of EmmitsburgFrederick County2164961.7%2,921
Town of ManchesterCarroll County1171681.0%4,954
Town of HancockWashington County1157292.1%1,921
Beaches Water Co-OperativeCalvert County0122681.5%2,000
Town of ThurmontFrederick County0117970.5%6,200
Town of Smithsburg Distribution SystemWashington County161,1440.6%2,500
Boones Mobile EstatesAnne Arundel County0701.5%1,315
City of CumberlandAllegany County068,916<0.1%27,039
Town of Williamsport Distribution SystemWashington County157520.8%2,400
Town of Indian HeadCharles County236290.3%4,100
City of SalisburyWicomico County037,521<0.1%30,343
Laurel Water SupplyCharles County031119%50
Town of OaklandGarrett County201,0640.2%1,850
Lyons Creek EstatesAnne Arundel County0200.8%750
Howard County D.P.W. DistributionHoward County0116,800<0.1%286,158
Town of la PlataCharles County01367<0.1%11,535
Town of GalenaKent County011270.8%560
U.S. Naval AcademyAnne Arundel County01170.5%8,700
Patuxent Mobile EstatesAnne Arundel County0100.7%450
Benedictine SchoolCaroline County0103.7%300

No confirmed lead, but unknown lines remain (152)

Water systemLeadGalv.Unknown% leadPeople
City of HagerstownWashington County0017,7470%92,200
City of RockvilleMontgomery County008,2980%52,000
City of Cambridge WaterDorchester County005,9160%15,000
Maryland American Water CompanyHarford County004,8790%13,200
New Design - Frederick CountyFrederick County004,7300%74,911
Waldorf - Charles County DPWCharles County003,7370%84,296
StevensvilleQueen Anne'S County003,5620%9,155
Eastern Region Allegany Distrib. SystemAllegany County003,4700%5,703
Harford County D.P.W.Harford County003,2930%104,567
Easton UtilitiesTalbot County003,0740%17,357
City of AberdeenHarford County002,6980%18,006
City of Havre de GraceHarford County002,6030%14,000
City of BrunswickFrederick County002,2170%7,312
Western Region Allegany Distrib. SystemAllegany County001,9850%4,955
City of Pocomoke CityWorcester County001,7740%4,100
Town of Ocean CityWorcester County001,7570%30,000
Midland-LonaconingAllegany County001,7400%5,000
Freedom DistrictCarroll County001,4840%24,867
MD American Water ProvincesAnne Arundel County001,4830%3,886
Town of FederalsburgCaroline County001,1270%2,450
Town of St. MichaelsTalbot County001,1150%2,650
Town of WesternportAllegany County001,0930%2,200
City of FruitlandWicomico County001,0000%5,907
Town of Mountain Lake ParkGarrett County009440%3,000
Town of Snow HillWorcester County009120%2,409
MD American Water GreenridgeHarford County008550%2,351
Town of Rock HallKent County008180%1,750
SolomonsCalvert County006860%3,811
Town of BerlinWorcester County006630%4,500
Town of CentrevilleQueen Anne'S County006630%3,322
Town of New WindsorCarroll County006290%1,732
Crofton-OdentonAnne Arundel County006160%62,986
MD American Water - PintoAllegany County006140%2,615
Town of GreensboroCaroline County006080%1,878
Town of HurlockDorchester County006000%2,150
Town of PerryvilleCecil County005950%4,413
Town of Princess AnneSomerset County005640%3,300
Bryans RoadCharles County005430%6,260
Fountaindale SouthFrederick County005370%2,610
Town of WalkersvilleFrederick County005230%8,440
Town of North EastCecil County004440%8,600
Chapel Hill - Aberdeen Proving GroundsHarford County004120%15,000
Town of Union BridgeCarroll County004050%997
Town of Chesapeake City [formerly South]Cecil County003890%673
Chesapeake Ranch EstatesCalvert County003880%9,500
Town of OxfordTalbot County003800%726
Town of FriendsvilleGarrett County003740%622
Elkton WestCecil County003670%3,500
Town of GrantsvilleGarrett County003470%885
WortonKent County003450%955

Showing 50. See all

No lead or unknown lines reported (36)

Systems serving 1,000 or more people. Systems without counts on file are listed as 0.

Water systemLeadGalv.Unknown% leadPeople
Lexington ParkSt. Mary'S County0000%43,030
City of WestminsterCarroll County0000%35,256
City of BowiePrince George'S County0000%25,000
Ocean PinesWorcester County0000%11,890
City of FrostburgAllegany County0000%11,000
Fort DetrickFrederick County0000%7,900
Town of HampsteadCarroll County0000%6,600
Mystic HarbourWorcester County0000%5,945
Town of ChestertownKent County0000%5,400
Town of Chesapeake BeachCalvert County0000%5,000
Town of LeonardtownSt. Mary'S County0000%5,000
Town of CharlestownCecil County0000%3,791
Eastern Correctional InstituteSomerset County0000%3,500
Country LakesSt. Mary'S County0000%3,016
Town of North BeachCalvert County0000%3,000
City of CrisfieldSomerset County0000%2,976
Cedar CoveSt. Mary'S County0000%2,728
Mount Saint Marys UniversityFrederick County0000%2,700
Wakefield ValleyCarroll County0000%2,436
Lake Village TownhomesAnne Arundel County0000%2,400
Town of Rising SunCecil County0000%2,200
Saint Marys CollegeSt. Mary'S County0000%2,200
Mountain Hill Water CompanyCecil County0000%2,154
Johns Hopkins UniversityBaltimore City County000–2,058
Perry Point V.A. Medical CenterCecil County0000%2,000
Town of RidgelyCaroline County0000%1,600
Lakeside VillageWashington County0000%1,575
Springfield Hospital DistributionCarroll County0000%1,500
Scientists CliffsCalvert County0000%1,425
Wicomico ShoresSt. Mary'S County0000%1,262
Fairland Crossing ApartmentsMontgomery County000–1,248
Sherwood Forest Water CompanyAnne Arundel County0000%1,200
GreenbrierSt. Mary'S County0000%1,161
Summit/HighlandsCalvert County0000%1,108
Bayside-QueenslandingStevensville000–1,030
Breton BaySt. Mary'S County0000%1,012

Lead pipes in Maryland cities

All Maryland cities and towns · Lead pipes by county

Maryland lead pipe questions

How many lead pipes are in Maryland?

Maryland's community water systems reported 109 lead service lines and 3,027 galvanized lines that must be replaced, for 3,136 in total. Another 563,397 lines are of unknown material.

Which Maryland water systems have the most lead pipes?

Washington Suburban Sanitary Commission (1,285), Town of Denton (596), City of Baltimore (432). Counts are lead plus galvanized-requiring-replacement lines.

What share of Maryland service lines are lead?

0.2% of reported service lines in Maryland are lead or galvanized requiring replacement, well below the national figure of 3.1%. 34% are still unknown, compared with 21% nationally.

How do I find out if my Maryland home has a lead service line?

Search for your water system or ZIP code above, then open your utility's address-level inventory map. You can also check the pipe where it enters your home with a scratch and magnet test.

Source: EPA SDWIS service line inventory, 2026 Q3. Smaller systems with no lead or unknown lines are omitted. See also national rankings.