C56/100

Ohio Tap Water Quality Rankings 2026

410 cities · 10,253,021 people served

Top Contaminant Concerns

Copper (90th percentile)PFOAPFOSLead (90th percentile)PFHxS

All Cities in Ohio

#	City	Score	Population	Violations
1	Columbus	D (35)	1,336,020	191
2	Cleveland	C (40)	1,308,955	48
3	Cincinnati	B (66)	776,318	58
4	Toledo	B (72)	360,000	8
5	Kent	C (42)	309,662	67
6	Kettering	B (64)	233,240	16
7	Delaware	B (66)	193,895	34
8	Hamilton	A (84)	159,428	7
9	Dayton	C (55)	150,355	30
10	Youngstown	B (72)	134,258	19
11	Batavia	B (62)	133,059	19
12	Lorain	C (44)	132,152	43
13	Lebanon	C (53)	120,141	174
14	Painesville	A (88)	119,035	7
15	Canton	A (82)	113,803	16
16	Fairfield	B (64)	107,354	19
17	Mentor	A (87)	106,228	5
18	Massillon	B (63)	101,655	118
19	Lagrange	B (71)	85,675	42
20	Springfield	A (91)	76,783	18
21	Bowling Green	C (56)	74,654	129
22	Medina	B (63)	72,280	24
23	Marion	B (63)	66,352	15
24	Lima	B (64)	65,619	16
25	Trenton	C (43)	64,241	40
26	Struthers	B (68)	62,567	43
27	Lancaster	A (81)	58,775	27
28	Chillicothe	A (80)	57,070	17
29	Findlay	C (52)	54,040	13
30	Zanesville	C (44)	53,721	164
31	Mansfield	B (68)	53,050	22
32	Athens	B (65)	52,036	43
33	Warren	F (0)	51,951	103
34	Cuyahoga Falls	C (58)	51,114	30
35	Lakewood	B (75)	50,942	14
36	Newark	C (46)	49,934	26
37	Pataskala	B (67)	48,900	28
38	Norwalk	B (77)	46,927	21
39	Ironton	D (37)	46,071	51
40	Beavercreek	B (75)	45,800	20
41	Huber Heights	B (65)	43,439	8
42	Morrow	C (50)	42,868	50
43	Portsmouth	A (81)	40,475	4
44	Reynoldsburg	A (87)	37,847	2
45	Barnesville	C (48)	37,011	57
46	Jamestown	B (71)	36,617	19
47	Ashtabula	A (81)	35,634	8
48	Stow	B (75)	35,437	6
49	Hillsboro	B (63)	35,071	30
50	Steubenville	C (43)	34,011	77
51	Glenford	B (74)	33,258	11
52	Marietta	C (58)	32,375	97
53	Whitehouse	B (63)	32,200	22
54	Ripley	F (6)	32,090	79
55	Huron	B (73)	32,064	60
56	Norton	F (0)	31,298	60
57	Westerville	A (84)	29,471	32
58	North Ridgeville	A (82)	29,465	6
59	Vienna	A (80)	29,163	14
60	Xenia	B (71)	29,000	14
61	Gallipolis	B (69)	28,129	8
62	Vandalia	C (44)	27,585	21
63	New Richmond	B (68)	26,790	39
64	Wooster	B (73)	26,618	8
65	Port Clinton	A (85)	26,484	14
66	Rossburg	A (87)	26,305	2
67	Ravenna	B (74)	25,813	39
68	Sandusky	C (50)	25,793	23
69	Jackson	D (38)	25,675	74
70	Marysville	F (0)	25,571	29
71	West Union	A (81)	25,480	12
72	Tipp City	A (93)	24,766	4
73	N Canton	B (70)	24,747	22
74	Mount Vernon	A (84)	24,700	8
75	Miamisburg	B (63)	24,540	52
76	Wadsworth	A (90)	24,356	2
77	Somerville	B (77)	24,000	4
78	Circleville	B (78)	23,984	20
79	Avon	A (84)	23,800	4
80	Avon Lake	B (72)	23,659	12
81	Cambridge	C (47)	22,636	136
82	Piqua	C (53)	22,443	38
83	Alliance	F (0)	22,232	35
84	Niles	B (71)	21,961	6
85	Sylvania	A (97)	21,618	3
86	Baltimore	C (58)	20,813	57
87	Ashland	A (85)	20,648	4
88	Sidney	C (45)	20,614	35
89	Oregon	A (83)	19,950	5
90	Waverly	B (60)	19,920	45
91	Norwood	B (70)	19,870	7
92	Springboro	C (45)	19,263	12
93	Pickerington	A (81)	19,141	4
94	Berea	B (74)	18,789	14
95	Fremont	F (0)	18,319	55
96	Defiance	F (0)	18,154	112
97	Tallmadge	B (79)	18,000	6
98	New Philadelphia	B (79)	17,410	6
99	Franklin	D (21)	17,175	52
100	Salem	C (47)	16,850	22
101	Long Bottom	B (67)	16,087	26
102	Aurora	A (95)	15,852	5
103	Monroe	C (42)	15,600	36
104	Franklin Furnace	B (62)	15,319	38
105	Williamsport	C (40)	15,138	43
106	Streetsboro	A (85)	15,105	3
107	Camden	B (72)	14,960	38
108	Maumee	A (89)	14,286	3
109	Bexley	B (70)	14,250	6
110	Girard	B (77)	14,122	7
111	Jefferson	A (81)	13,972	4
112	Lucasville	B (66)	13,820	11
113	Coshocton	D (28)	13,537	20
114	Englewood	A (89)	13,463	4
115	Fostoria	C (56)	13,441	12
116	Dover	D (29)	13,253	24
117	Bellefontaine	F (0)	13,249	88
118	Greenville	B (66)	13,227	10
119	Bedford	A (98)	13,149	2
120	Loveland	B (70)	12,800	11
121	East Liverpool	F (0)	12,586	98
122	Bucyrus	B (71)	12,570	9
123	Conneaut	C (46)	12,538	16
124	Wilmington	F (0)	12,401	37
125	Oak Hill	C (43)	12,067	63
126	Amherst	A (85)	11,797	4
127	Celina	F (0)	11,682	89
128	Harrison	B (60)	11,600	25
129	Urbana	F (4)	11,428	46
130	Blacklick	C (46)	11,294	39
131	Mcdermott	B (78)	11,059	3
132	Canal Winchester	A (89)	11,007	2
133	Wapakoneta	B (64)	11,000	8
134	Van Wert	F (0)	10,846	71
135	Louisville	B (76)	10,792	21
136	Millfield	D (38)	10,721	52
137	Vermilion	F (0)	10,569	90
138	Galion	C (49)	10,453	23
139	Navarre	A (81)	10,409	19
140	Heath	A (80)	10,310	6
141	Wellsville	D (39)	10,300	38
142	Little Hocking	A (88)	9,892	1
143	Logan	D (32)	9,654	47
144	Oakwood	A (94)	9,572	0
145	Reading	C (55)	9,506	22
146	Bellbrook	B (61)	9,475	12
147	Shelby	F (0)	9,453	44
148	St Marys	A (81)	9,356	4
149	Dennison	F (0)	9,224	56
150	Sheffield Lake	A (84)	9,108	5
151	Trotwood	B (68)	9,000	20
152	Napoleon	F (0)	8,858	22
153	Wauseon	C (41)	8,818	33
154	Bryan	A (81)	8,729	4
155	New Lexington	D (30)	8,669	111
156	W. Alexandria	A (100)	8,400	0
157	Hudson	A (83)	8,385	2
158	Kenton	A (80)	8,360	9
159	Hubbard	A (81)	8,339	4
160	Delphos	F (17)	8,254	136
161	Chardon	B (68)	8,247	16
162	Bellevue	C (51)	8,236	21
163	Canfield	B (63)	7,767	13
164	Cortland	C (49)	7,105	39
165	Willard	A (85)	7,099	3
166	Andover	D (31)	7,028	132
167	Union	B (69)	7,000	12
168	Wellston	F (0)	7,000	90
169	Martins Ferry	B (71)	6,980	10
170	Archbold	C (49)	6,921	26
171	Chagrin Falls	B (60)	6,791	61
172	Columbiana	A (88)	6,727	4
173	Milford	F (0)	6,700	185
174	Upper Sandusky	C (48)	6,698	32
175	Washington Court House	D (37)	6,685	52
176	Rutland	D (23)	6,663	17
177	Nelsonville	F (0)	6,656	142
178	Ontario	B (71)	6,656	18
179	Mount Orab	C (51)	6,607	38
180	Bolivar	C (59)	6,587	33
181	South Lebanon	C (57)	6,541	32
182	White Cottage	F (0)	6,540	106
183	Waterville	A (88)	6,500	4
184	Rittman	D (39)	6,491	37
185	Belpre	D (35)	6,441	38
186	Clyde	A (84)	6,325	8
187	Buckeye Lake	A (83)	6,161	15
188	Newton Falls	D (21)	6,109	39
189	Troy	A (86)	6,109	10
190	Sebring	F (0)	6,058	82
191	Cleves	A (84)	6,000	12
192	Granville	A (82)	5,946	3
193	Geneva	A (88)	5,924	4
194	Brookville	B (70)	5,923	15
195	New Carlisle	B (61)	5,800	11
196	Germantown	F (0)	5,796	92
197	Obetz	A (86)	5,751	19
198	Toronto	B (68)	5,676	16
199	Ada	B (76)	5,334	8
200	Canal Fulton	B (60)	5,323	29
201	Caldwell	F (13)	5,289	65
202	Johnstown	B (70)	5,200	27
203	Byesville	F (0)	5,104	119
204	St. Clairsville	F (0)	5,097	70
205	Munroe Falls	A (85)	5,042	7
206	Waterford	B (65)	4,900	40
207	West Milton	F (0)	4,890	85
208	Ottawa	F (0)	4,863	141
209	Wellington	C (50)	4,802	27
210	Delta	C (41)	4,787	59
211	Coldwater	F (7)	4,774	81
212	East Palestine	B (78)	4,761	11
213	Columbia Station	A (95)	4,708	2
214	Crestline	A (82)	4,630	7
215	Oak Harbor	A (92)	4,615	8
216	Greenfield	B (66)	4,600	11
217	West Jefferson	B (70)	4,488	15
218	Laings	C (59)	4,334	18
219	Lexington	D (24)	4,320	56
220	Ashville	B (60)	4,298	29
221	Montpelier	B (75)	4,280	10
222	Bellaire	F (0)	4,278	96
223	Fayetteville	F (3)	4,243	26
224	Georgetown	A (94)	4,243	3
225	Sheffield Village	A (95)	4,165	5
226	South Point	B (65)	4,133	24
227	Bluffton	F (0)	4,125	47
228	Waynesville	B (74)	4,100	11
229	Corning	C (57)	4,029	11
230	Cedarville	B (71)	4,000	11
231	Minerva	C (52)	4,000	37
232	New Lebanon	B (69)	3,995	12
233	Wintersville	A (87)	3,924	5
234	Bethel	D (36)	3,900	41
235	Newcomerstown	B (61)	3,882	35
236	Swanton	F (0)	3,855	21
237	Elida	F (0)	3,848	26
238	Yellow Springs	A (81)	3,761	4
239	Carey	B (64)	3,674	17
240	Paulding	F (0)	3,605	75
241	Hicksville	B (68)	3,600	21
242	Lordstown	B (72)	3,515	4
243	Mt Gilead	D (29)	3,503	52
244	Commercial Point	B (71)	3,497	26
245	Lockland	B (66)	3,486	14
246	North Baltimore	C (45)	3,432	27
247	Woodville	B (79)	3,427	19
248	Fredricktown	C (41)	3,376	40
249	Cadiz	F (0)	3,353	74
250	Mingo Junction	D (33)	3,350	44
251	New London	A (87)	3,250	2
252	Groveport	D (36)	3,229	49
253	Millersport	B (65)	3,200	32
254	New Miami	C (49)	3,200	36
255	Fairport Harbor	D (23)	3,180	65
256	Mcdonald	B (72)	3,172	8
257	Millersburg	A (81)	3,151	3
258	Kelleys Island	F (0)	3,125	61
259	Genoa	C (51)	3,110	21
260	New Waterford	F (9)	3,071	128
261	Lakemore	A (80)	3,068	12
262	Carrollton	B (79)	3,055	9
263	Doylestown	A (84)	3,051	8
264	New Bremen	A (88)	3,034	9
265	Minster	F (2)	3,025	86
266	Lowell	A (87)	3,022	2
267	Bellville	A (82)	3,018	13
268	Eaton	A (81)	2,950	8
269	Lodi	A (81)	2,884	4
270	Bridgeport	D (28)	2,830	57
271	Grafton	F (0)	2,769	152
272	Middlefield	C (43)	2,748	13
273	Covington	B (76)	2,718	13
274	Versailles	C (50)	2,687	23
275	Sarahsville	F (0)	2,670	28
276	Fredericktown	A (82)	2,648	7
277	Loudonville	A (91)	2,641	5
278	Strasburg	C (53)	2,610	35
279	Woodsfield	F (0)	2,598	38
280	St Henry	B (64)	2,596	25
281	Crooksville	F (0)	2,534	49
282	Silver Lake	A (95)	2,519	5
283	Gibsonburg	A (86)	2,506	3
284	Gambier	B (72)	2,502	12
285	Glendale	B (79)	2,500	10
286	Jerusalem	A (92)	2,500	5
287	Sabina	F (9)	2,493	68
288	New Concord	F (0)	2,491	70
289	Williamsburg	D (26)	2,490	39
290	Middleport	C (42)	2,446	43
291	Sardinia	F (19)	2,428	30
292	Lakeville	B (60)	2,422	49
293	Enon	C (46)	2,415	46
294	Criderville	C (52)	2,410	40
295	Mcarthur	A (84)	2,400	8
296	Harrisville	A (90)	2,370	7
297	Belle Valley	F (0)	2,368	29
298	Hebron	B (74)	2,368	15
299	Leipsic	C (58)	2,348	10
300	Malta	F (11)	2,340	18
301	Garrettsville	A (85)	2,325	7
302	Richwood	B (74)	2,316	19
303	Seville	B (62)	2,296	15
304	Oak Harber	B (75)	2,288	9
305	Spencerville	B (71)	2,261	9
306	Utica	B (67)	2,235	18
307	Sugarcreek	B (68)	2,220	20
308	London	D (27)	2,200	22
309	Olmsted Twp	A (90)	2,199	6
310	Piketon	F (0)	2,181	252
311	Creston	D (28)	2,171	60
312	Southpoint	B (76)	2,167	13
313	Columbus Grove	F (0)	2,137	72
314	Brewster	B (76)	2,113	13
315	Arcanum	B (66)	2,100	19
316	Cardington	B (77)	2,079	8
317	Mount Sterling	F (9)	2,059	72
318	Manchester	B (70)	2,043	15
319	Bradford	D (22)	2,000	35
320	Brilliant	C (41)	2,000	44
321	Dalton	A (81)	2,000	8
322	Dresden	C (55)	2,000	37
323	South Bloomfield	F (10)	1,999	54
324	Peebles	A (85)	1,978	4
325	Berlin	C (40)	1,896	49
326	Edgerton	C (45)	1,881	44
327	Plymouth	B (69)	1,874	15
328	Roseville	A (84)	1,852	13
329	North Lewisburg	F (0)	1,850	99
330	Lewisburg	A (81)	1,800	11
331	Pomeroy	C (54)	1,800	31
332	West Liberty	B (75)	1,800	14
333	Mconnelsville	F (15)	1,780	66
334	Windham	B (63)	1,777	25
335	Roaming Shores	C (46)	1,764	22
336	West Unity	B (74)	1,760	9
337	Antwerp	C (47)	1,741	22
338	Mount Gillead	B (78)	1,710	3
339	South Amherst	F (0)	1,688	139
340	New Paris	F (0)	1,681	45
341	Orwell	B (70)	1,660	23
342	Glouster	B (72)	1,659	5
343	Forest	B (61)	1,652	23
344	Russells Point	F (0)	1,651	33
345	Mechanicsburg	D (26)	1,644	67
346	Payne	F (19)	1,594	66
347	Green Springs	F (0)	1,592	36
348	Powhatan Point	B (78)	1,592	11
349	Newport	C (43)	1,582	42
350	Deshler	B (77)	1,578	4
351	Winesburg	B (73)	1,575	16
352	Felicity	D (35)	1,573	34
353	Lithopolis	F (7)	1,573	74
354	Anna	B (67)	1,558	22
355	Kalida	B (72)	1,542	12
356	Fort Loramie	B (76)	1,524	9
357	Burton	B (73)	1,520	19
358	Lynchburg	D (27)	1,515	50
359	Shreve	C (49)	1,514	40
360	Fort Recovery	B (66)	1,501	27
361	Grand Rapids	B (64)	1,500	16
362	Powhattan Point	B (74)	1,493	11
363	Somerset	F (0)	1,490	55
364	Greenwich	B (68)	1,476	17
365	Carlisle	B (61)	1,475	28
366	Jackson Center	B (77)	1,462	8
367	Arlington	A (82)	1,451	18
368	Chauncey	F (0)	1,428	89
369	Bremen	C (51)	1,425	29
370	W Salem	C (52)	1,410	33
371	Hiram	B (79)	1,406	9
372	Monroeville	A (82)	1,400	10
373	West Alexandria	C (47)	1,385	26
374	Bethesda	B (68)	1,382	16
375	Pioneer	C (56)	1,380	21
376	Tiltonsville	B (71)	1,372	18
377	Milan	A (87)	1,371	6
378	Jeffersonville	D (25)	1,356	60
379	Fayette	C (56)	1,340	41
380	Frazeysburg	C (56)	1,340	36
381	Pemberville	C (54)	1,326	31
382	Sardis	B (75)	1,301	14
383	Middletown	B (74)	1,280	15
384	Walnut Creek	F (0)	1,270	94
385	Botkins	D (33)	1,250	59
386	Gnadenhutten	B (76)	1,240	16
387	New Vienna	F (18)	1,240	59
388	Pleasant Hill	B (79)	1,226	10
389	Degraff	A (100)	1,215	0
390	Pandora	A (81)	1,204	19
391	Malvern	C (59)	1,200	10
392	Ashley	D (38)	1,198	34
393	Liberty Center	F (0)	1,180	37
394	Ansonia	C (56)	1,174	9
395	Holgate	F (0)	1,150	41
396	Attica	F (0)	1,148	85
397	Rockford	D (25)	1,120	48
398	Convoy	A (88)	1,100	4
399	Frankfort	A (87)	1,100	2
400	Magnolia	C (53)	1,085	44
401	Lakeview	A (86)	1,083	11
402	Tuscarawas	B (64)	1,056	36
403	Seaman	A (95)	1,052	2
404	Wakeman	F (0)	1,047	41
405	Kingston	C (45)	1,032	48
406	Beach City	A (84)	1,031	5
407	Yorkville	C (40)	1,019	45
408	Danville	F (0)	1,014	101
409	Farmersville	C (50)	1,009	27
410	Glandorf	B (60)	1,001	12