Lead Pipe Map

Water systems with the highest recent lead test results

These systems serving at least 1,000 people had the highest 90th-percentile lead results in their latest sampling period ending in 2024 or later. 68 of the top 100 were at or above the 15 ppb action level.

Rank / water systemLead (90th pct.)PeriodLead + galv. linesPeople
1Victor VillageVictor, NY5800 ppbJan 2024–Dec 2026112,443
2Muncy Borough Water CompanyLycoming County, PA890 ppbJun 2025–Sep 202502,900
3Alton Water WorksAlton, NH210 ppbJan 2022–Dec 202401,800
4Troy City PWSTroy, NY110 ppbJan 2026–Jun 20261,64151,401
5Greenville Water DeptGreenville, NH110 ppbJan 2022–Dec 202421,100
6Treasure IslandSan Francisco County, CA100 ppbJan 2022–Dec 202403,864
7RichmondStearns County, MN85 ppbJan 2024–Dec 2026201,506
8HighwoodHighwood, IL76 ppbJan 2022–Dec 20242715,335
9Grabill Water WorksGrabill, IN58.6 ppbJan 2026–Jun 202601,163
10HectorRenville County, MN50 ppb2026101,127
11Williams Bay WaterworksWilliams Bay, WI45 ppbJan 2026–Jun 202672,601
12Kotzebue Mun. Water SystemKotzebue, AK45 ppb202603,234
13Indiana American Water - WabashWabash, IN38 ppbJan 2024–Dec 202626812,140
14WaverlyWright County, MN36 ppbJan 2026–Jun 202662,234
15Atkins Water SystemPope County, AR36 ppbJan 2026–Dec 202804,439
16Harris County MUD 144Harris County, TX34.6 ppb202603,219
17Mun Water Auth of AliquippaBeaver County, PA33.5 ppbJan 2024–Jun 202414215,685
18Town of Greenwood Water SystemCaddo Parish County, LA29 ppbJan 2024–Dec 202605,205
19AuroraAurora, IL25.7 ppbJan 2026–Jun 202616,063183,000
20LemontLemont, IL25 ppbJan 2026–Jun 20266518,513
21Mitchell County UtilityMitchell County, TX23.8 ppb202602,136
22Valley Water CompanyFairbanks, AK23 ppbJan 2026–Jun 202601,575
23NewcastleMcClain County, OK22.5 ppbJan 2026–Jun 202607,900
24Millersview Doole WSCConcho County, TX22.3 ppbJan 2026–Jun 202613,987
25GordonGordon, GA22 ppb202602,291
26Lewes Board of Public WorksLewes, DE21.6 ppbJan 2026–Jun 2026959,627
27Quincy Water Dept. (Mwra)Quincy, MA21 ppb2026452106,000
28Lake ForestLake Forest, IL21 ppbJan 2026–Jun 202625019,642
29PrincetonPrinceton, IL21 ppbJan 2026–Jun 20262507,832
30City of RiverbankRiverbank, CA21 ppbJan 2024–Dec 202613425,625
31MilfordMilford, IL21 ppbJan 2026–Jun 20261011,306
32NorthfieldNorthfield, IL21 ppbJan 2026–Jun 2026855,751
33Vera Water & PowerSpokane County, WA20.8 ppbJan 2023–Dec 20253124,692
34BartlettBartlett, IL20 ppbJan 2026–Jun 20267141,500
35Usmc - 29 PalmsSan Bernardino County, CA20 ppbJan 2022–Dec 2024016,067
36Rainelle Water DeptRainelle, WV19.2 ppbJan 2026–Jun 202601,381
37FaribaultRice County, MN19 ppbJan 2024–Dec 20261,07623,718
38Charlestown Water WorksCharlestown, NH19 ppbJan 2024–Jun 202402,850
39Leoni TownshipMichigan Center, MI19 ppbJan 2023–Dec 202501,893
40Tower LakesTower Lakes, IL19 ppbJan 2024–Dec 202601,372
41ElginElgin, IL18.5 ppbJan 2026–Jun 20268,222114,797
42Richwood Water DeptRichwood, WV18.5 ppbJan 2022–Dec 202402,480
43Corbet WSCNavarro County, TX18.2 ppbJan 2024–Dec 202603,234
44SpringfieldBrown County, MN18 ppbJan 2024–Dec 2026442,070
45Cottonwood Municipal Water Vv6Cottonwood, AZ18 ppbJan 2024–Dec 202604,518
46City of WalsenburgHuerfano County, CO18 ppbJan 2026–Jun 202603,230
47Morton GroveMorton Grove, IL17.4 ppbJan 2026–Jun 20263,10825,297
48Jay TWP Water AuthorityElk County, PA17.2 ppbJul 2024–Dec 202401,131
49R.C. Willis WTP (City of Palatka)Palatka, FL16.8 ppbJul 2025–Dec 2025011,900
50Pearl River Central W/A-Bi CoPearl River County, MS16.6 ppbJan 2022–Dec 202404,406
51East MolineEast Moline, IL16 ppbJan 2026–Jun 202639321,374
52BensonSwift County, MN16 ppbJan 2024–Dec 2026873,437
53Hume Lake Christian Camps, INCFresno County, CA16 ppbJan 2024–Dec 202601,519
54Troy Water DeptartmentBradford County, PA15.8 ppbJun 2025–Sep 202501,362
55Garden CityGarden City, MI15.6 ppbJan 2026–Jun 202631527,625
56North Milam WSCMilam County, TX15.6 ppbJan 2024–Dec 2026351,833
57Plattsburg PWSPlattsburg, MO15.5 ppbJan 2026–Dec 202802,354
58City of CandoCando, ND15.2 ppbJan 2022–Dec 2024171,115
59Cheyenne Board of Public UtilitiesCheyenne, WY15 ppb20258264,165
60Howard LakeWright County, MN15 ppbJan 2022–Dec 2024432,180
61Town of Lake LureLake Lure, NC15 ppb2026241,176
62Milo Water DistrictMilo, ME15 ppbJan 2024–Dec 2026101,720
63Village of Angel FireAngel Fire, NM15 ppbJan 2024–Dec 202606,045
64Town of China GroveChina Grove, NC15 ppbJan 2023–Dec 202504,895
65Blue Lake Springs Mut WTRCalaveras County, CA15 ppbJan 2022–Dec 202404,822
66Spring Canyon WSDLarimer County, CO15 ppb202502,320
67Veolia Water Nj-Bald Eagle VillageWest Milford Twp., NJ15 ppbJan 2026–Jun 202601,258
68MeredosiaMeredosia, IL15 ppb202501,075
69Harris County WCID 50 El LagoHarris County, TX14.9 ppb2026383,924
70Multi-Mart Water AssociationGeorge County, MS14.9 ppbJan 2023–Dec 202501,785
71Reinbeck Water SupplyReinbeck, IA14.8 ppbJan 2022–Dec 202461,662
72Parkersburg Water SupplyParkersburg, IA14.6 ppbJan 2022–Dec 202452,019
73Cedar Lake Water WorksCedar Lake, IN14.5 ppbJan 2025–Dec 202704,600
74Olympic Valley PSDPlacer County, CA14.4 ppbJan 2022–Dec 202401,165
75Town of VardamanCalhoun County, MS14.3 ppbJan 2023–Dec 2025191,610
76City of OakridgeLane County, OR14.2 ppbJan 2024–Dec 202603,200
77Columbia City Water DepartmentColumbia City, IN14 ppbJan 2023–Dec 20252559,892
78HibbingSt. Louis County, MN14 ppbJan 2026–Jun 202619216,028
79North MankatoNicollet County, MN14 ppbJan 2024–Dec 202615314,448
80North UticaNorth Utica, IL14 ppbJan 2026–Jun 2026221,323
81Minersville Municipal Water AuSchuylkill County, PA14 ppbJun 2025–Sep 202547,275
82Absarokee Water and Sewer DistAbsarokee, MT14 ppbJan 2024–Dec 202611,100
83WorthingtonNobles County, MN14 ppbJan 2024–Dec 2026014,052
84GreenvilleGreenville, IL14 ppb202508,310
85Alachua WTPAlachua, FL14 ppb202508,220
86City of Tamarac (East)Tamarac, FL14 ppb202402,582
87PlattePlatte, SD14 ppb202401,256
88Amsterdam (C)Amsterdam, NY13.9 ppbJan 2026–Jun 202624220,700
89City of CarringtonCarrington, ND13.9 ppbJan 2022–Dec 2024652,065
90City of TomballHarris County, TX13.9 ppbJan 2024–Dec 2026017,532
91Fair Haven VillageFair Haven, NY13.8 ppbJan 2022–Dec 2024441,001
92BurnhamBurnham, IL13.7 ppbJan 2026–Jun 20267113,989
93Ponderosa Forest Utility DistrictHarris County, TX13.7 ppb20262110,101
94Tridell Lapoint WidUintah County, UT13.7 ppbJan 2023–Dec 202501,525
95Pushmataha Co. RWD #1Pushmataha County, OK13.7 ppbJan 2022–Dec 202401,200
96Lynn Water CompanyLynn, IN13.7 ppbJan 2022–Dec 202401,097
97City of MinotMinot, ND13.5 ppbJan 2022–Dec 202428148,743
98Woods Cross City Water SystemDavis County, UT13.5 ppbJan 2023–Dec 2025013,110
99Little Creek PSDFairmont, WV13.3 ppbJan 2024–Dec 202602,180
100Albany CityAlbany, NY13 ppbJul 2025–Dec 20252,24598,000

90th-percentile results from EPA's Lead and Copper Rule sample data. A high result triggers corrosion control and public education; it doesn't mean every home is affected.

Cite this list

Lead Pipe Map, "Water systems with the highest recent lead test results," November 1, 2026, https://leadpipemap.com/rankings/highest-lead-test-results/. Data: EPA SDWIS service line inventory, 2026 Q3.

Journalists and researchers are welcome to use these figures with a link back.