Water systems where the highest share of pipes are lead

Nationally, 3.1% of reported service lines are lead or galvanized requiring replacement. In these systems, each with at least 5,000 reported lines, the share is far higher, led by City of Hutchinson at 100%.

Rank / water system	Lead	Galv.	Unknown	% lead	People
1City of HutchinsonHutchinson, KS	0	16,594	0	100%	39,712
2Water And Power Authority - STTSt. Thomas Island County, VI	0	6,816	0	100%	34,000
3City of Junction CityJunction City, KS	0	8,416	216	97%	19,167
4Water And Power Authority - STXSt. Croix Island County, VI	0	9,740	0	96%	35,000
5SouthgateSouthgate, MI	192	9,735	663	94%	30,047
6Ventnor City Water & Sewer UtilityVentnor City, NJ	0	4,755	0	92%	22,150
7Elmwood ParkElmwood Park, IL	5,825	0	0	91%	25,000
8CiceroCicero, IL	13,037	2	1,148	87%	83,000
9Evergreen ParkEvergreen Park, IL	5,933	48	0	84%	19,943
10Hammond Water Works DepartmentHammond, IN	22,380	744	4,518	82%	78,384
11East Orange Water CommissionEast Orange City, NJ	1,969	6,000	0	82%	75,000
12Poughkeepsie CityPoughkeepsie, NY	6,198	0	12	82%	30,639
13Water Works and Sewer Board of the City of GadsdenGadsden, AL	8	12,496	0	80%	44,637
14BerwynBerwyn, IL	10,527	301	174	80%	57,250
15MaywoodMaywood, IL	5,058	0	0	80%	24,090
16Muskegon HeightsMuskegon Heights, MI	3,940	95	0	78%	9,917
17ChicagoCook County, IL	350,531	10,326	39,427	74%	2,721,308
18EscanabaEscanaba, MI	3,572	322	0	72%	12,941
19MuskegonMuskegon, MI	7,631	2,736	0	72%	37,213
20LansingLansing, IL	5,186	2	56	70%	29,076
21Sandusky CityErie County, OH	6,676	50	1,834	65%	25,793
22EvanstonEvanston, IL	9,198	270	0	65%	74,486
23JacksonJackson, MI	7,840	1	3,360	63%	33,165
24Elkhart Public Works and UtilitiesElkhart, IN	19,747	1,338	1,293	62%	46,455
25Oak ParkOak Park, IL	6,935	714	1,222	61%	54,583
26Belleville Water DeptBelleville Town, NJ	4,411	0	0	59%	35,129
27South Bend Water WorksSouth Bend, IN	27,001	1,037	10,572	57%	115,000
28City of CamdenCamden City, NJ	9,401	0	2,925	57%	46,585
29City of OwossoOwosso, MI	1,950	1,809	13	57%	16,353
30Wauwatosa WaterworksWauwatosa, WI	8,665	0	653	56%	49,064
31East Chicago Water WorksEast Chicago, IN	1,732	2,157	1,716	55%	26,370
32HomewoodHomewood, IL	3,753	6	593	55%	19,463
33CreteCrete, IL	573	2,901	181	53%	8,386
34Hannibal PWSHannibal, MO	5,776	0	1,956	51%	17,108
35City of Talladega Water & Sewer DeptTalladega, AL	0	3,806	3	51%	20,250
36City of Port LavacaCalhoun County, TX	0	2,563	0	50%	12,000
37JacksonvilleJacksonville, IL	3,391	525	1	50%	19,903
38Mount Vernon Water DepartmentMount Vernon, NY	5,144	12	4,924	49%	73,893
39WestchesterWestchester, IL	3,399	0	26	48%	16,241
40Oswego CityOswego, NY	2,862	111	2,947	45%	29,400
41La GrangeLa Grange, IL	3,400	0	457	45%	16,200
42Buffalo Water AuthorityBuffalo, NY	34,208	110	35,839	45%	276,000
43Syracuse CitySyracuse, NY	17,239	48	16,098	45%	192,000
44Clarksburg Water BoardClarksburg, WV	3,408	370	0	44%	19,072
45BainbridgeBainbridge, GA	0	2,645	132	44%	14,500
46City of Arcadia Water DeptArcadia, FL	0	2,179	4	43%	8,942
47Superior Water Light & Power CompanySuperior, WI	4,497	113	360	43%	26,084
48Calumet CityCalumet City, IL	4,122	0	1,224	42%	37,000
49Milwaukee WaterworksMilwaukee, WI	65,331	0	26,341	41%	626,000
50Franklin ParkFranklin Park, IL	2,340	5	2,724	40%	18,467
51West Allis WaterworksWest Allis, WI	7,719	0	758	40%	63,240
52Cudahy WaterworksCudahy, WI	2,151	0	1,729	39%	18,659
53MinneapolisHennepin County, MN	38,341	132	962	38%	425,300
54Wildwood City Water DepartmentWildwood City, NJ	0	6,232	0	38%	218,472
55Dayton Water DeptDayton, TN	0	4,519	29	38%	25,054
56Morton GroveMorton Grove, IL	3,108	0	0	38%	25,297
57AdrianAdrian, MI	5	2,280	0	37%	23,663
58SkokieSkokie, IL	6,222	127	8,910	36%	66,422
59City of North PlatteNorth Platte, NE	2,452	1,750	1,505	36%	25,000
60Kingston (City) Water DistrictKingston, NY	2,711	17	2,056	35%	24,000
61Medford Water Dept. (Mwra)Medford, MA	5,128	2	4,657	35%	61,700
62Greenville City PWSDarke County, OH	2,046	65	1	35%	13,227
63WaukeganWaukegan, IL	7,260	62	686	35%	87,149
64MoultrieMoultrie, GA	0	2,838	665	34%	17,067
65Boone Water WorksBoone, IA	1,905	0	1	34%	12,704
66Vineland Water & Sewer UtilityVineland City, NJ	0	6,080	7,277	34%	36,250
67Cleveland Public Water SystemCuyahoga County, OH	144,193	528	56,954	33%	1,308,955
68Neenah WaterworksNeenah, WI	3,318	0	0	33%	27,506
69Lca Allentown DivisionLehigh County, PA	4,552	5,839	20,894	32%	118,000
70Sheboygan Water UtilitiesSheboygan, WI	4,811	468	736	32%	49,931
71City of ProvidenceCranston, RI	25,785	0	7,402	32%	333,142
72City of DetroitDetroit, MI	80,595	120	39,073	32%	633,218
73AuroraAurora, IL	16,063	0	16	32%	183,000
74Municipal Utilities Board of DecaturDecatur, AL	1	8,882	0	32%	77,103
75Racine WaterworksRacine, WI	10,257	394	1	31%	105,100
76Somerset Water DepartmentSomerset, MA	0	2,171	3,096	31%	18,303
77Gloversville (C) Water WorksGloversville, NY	1,297	490	327	31%	17,991
78WinonaWinona County, MN	0	2,706	3	30%	27,782
79DoltonDolton, IL	2,357	1	4,625	30%	20,510
80City of Bay CityBay City, MI	3,323	879	0	30%	32,255
81City of SnyderScurry County, TX	0	1,707	252	30%	11,104
82Oshkosh WaterworksOshkosh, WI	6,471	247	5,067	30%	63,000
83DublinLaurens County, GA	0	2,259	3,250	29%	15,392
84Chicago HeightsChicago Heights, IL	2,794	18	6,477	29%	26,184
85BrookfieldBrookfield, IL	1,900	46	531	29%	18,776
86City of NorfolkNorfolk, NE	54	2,905	5,020	29%	26,147
87QuincyQuincy, IL	5,223	33	70	29%	42,000
88Braintree Water and Sewer Dept.Braintree, MA	3,448	40	2,814	29%	39,143
89Lakewood City PWSCuyahoga County, OH	3,645	392	149	29%	50,942
90AntiochAntioch, IL	1,910	0	0	28%	14,175
91Rochester CityRochester, NY	14,648	1,992	16,142	28%	210,000
92Altoona Water AuthorityBlair County, PA	0	6,598	8,683	28%	62,500
93RockfordRockford, IL	14,240	1,088	28,598	28%	147,051
94MolineMoline, IL	3,859	873	2,416	28%	44,500
95City of PittsburgPittsburg, KS	1,709	0	4,639	27%	20,738
96MorrisMorris, IL	1,435	12	182	27%	14,775
97Marion City Water WorksMarion, IN	3,094	0	0	26%	28,363
98Trenton Water WorksEwing Twp., NJ	15,734	446	23,000	26%	217,000
99Lyndhurst Water DepartmentLyndhurst Twp, NJ	1,408	3	248	26%	22,000
100Aqua Ohio - TiffinSeneca County, OH	2,012	152	4,065	25%	20,279

Systems with at least 5,000 reported service lines. Source: EPA SDWIS service line inventory, 2026 Q3.

Cite this list

Lead Pipe Map, "Water systems where the highest share of pipes are lead," November 1, 2026, https://leadpipemap.com/rankings/highest-share-lead-lines/. Data: EPA SDWIS service line inventory, 2026 Q3.

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