Pennsylvania Tap Water Quality (2026)

Pennsylvania Tap Water Quality Report

839 cities analyzed • 9,301,314 people served

Updated September 2026 • Data from EWG & EPA SDWIS

839

Cities Analyzed

7.5

Avg Above Guidelines

9,301,314

Total Population Served

Best Water Quality

Boswell (0 above guidelines)

Most Concerns

Brownstown (20 above guidelines)

Most Common Contaminants in Pennsylvania

Contaminant	Found In	% of Cities
Total trihalomethanes (TTHMs) carcinogen	721 of 839	86%
Chloroform carcinogen	669 of 839	80%
Bromodichloromethane carcinogen	668 of 839	80%
Dibromochloromethane carcinogen	650 of 839	77%
Barium	596 of 839	71%
Haloacetic acids (HAA5) carcinogen	550 of 839	66%
Dichloroacetic acid carcinogen	534 of 839	64%
Nitrate carcinogen	511 of 839	61%
Trichloroacetic acid carcinogen	413 of 839	49%
Dibromoacetic acid	346 of 839	41%

City-by-City Water Quality Rankings

Ranked by number of contaminants above EWG health guidelines (most to fewest).

#	City	Detected	Above Guidelines	Above Legal	People Served
1	Quakertown	34	20	0	12,800
2	Brownstown	38	20	1	4,327
3	Bryn Mawr	41	19	0	747,460
4	New Freedom	29	19	0	4,464
5	Lansdale	38	18	1	91,941
6	Warminster	37	18	3	40,000
7	Horsham	41	18	0	25,000
8	Dover	34	18	1	21,097
9	Emmaus	33	18	4	14,000
10	Newtown	28	17	1	38,500
11	Richboro	38	17	0	36,750
12	Gettysburg	27	17	0	12,425
13	Leola	34	17	2	7,734
14	Coraopolis	37	17	1	5,804
15	Lancaster	33	16	1	120,000
16	Landisville	37	16	1	20,988
17	Southampton	28	16	2	16,000
18	Sellersville	29	16	0	15,000
19	Philadelphia	35	15	1	1,600,000
20	Wilkes Barre	29	15	0	134,570
21	Spring City	36	15	0	48,253
22	Moon Township	25	15	0	38,000
23	Ambler	27	15	0	20,000
24	Trappe	27	15	2	8,470
25	Kennett Square	30	15	2	6,328
26	Schwenksville	17	15	1	5,200
27	Breinigsville	29	15	0	1,475
28	Gilbertsville	17	15	2	300
29	Allentown	31	14	0	118,000
30	Norristown	25	14	0	88,885
31	North Wales	26	14	0	72,496
32	Williamsport	24	14	0	51,000
33	Beaver Falls	29	14	0	50,000
34	Ephrata	23	14	0	24,500
35	Elizabethtown	30	14	0	19,000
36	Phoenixville	30	14	0	16,599
37	St Thomas	23	14	0	12,000
38	Telford	20	14	2	7,700
39	Wernersville	29	14	0	7,654
40	Littlestown	18	14	0	7,300
41	Tunkhannock	19	14	0	5,349
42	Stewartstown	23	14	0	4,311
43	Zelienople	29	14	0	4,123
44	Quarryville	29	14	0	3,150
45	East Greenville	27	14	0	3,100
46	Conway	29	14	0	2,176
47	Saegertown	21	14	2	1,500
48	Dillsburg	18	14	0	0
49	Reading	23	13	1	87,000
50	Warrington	28	13	0	52,621
51	Yardley	26	13	1	33,171
52	Carlisle	24	13	1	26,000
53	Aliquippa	19	13	0	19,000
54	Mount Joy	19	13	0	14,150
55	Dallastown	19	13	0	12,300
56	Middletown	18	13	1	9,300
57	New Holland	24	13	1	5,500
58	Spinnerstown	14	13	0	4,147
59	Honey Brook	15	13	2	2,892
60	Royalton	20	13	1	1,083
61	Trumbauersville	17	13	0	974
62	Hulmeville	28	13	0	750
63	East Petersburg	20	13	2	0
64	Erie	23	12	0	220,001
65	Mechanicsburg	22	12	0	93,368
66	Allison Park	26	12	0	61,949
67	Monroeville	19	12	0	48,500
68	Cranberry Twp	23	12	0	42,000
69	Hanover	19	12	0	40,900
70	Milton	19	12	0	30,209
71	Columbia	16	12	0	25,200
72	Oakdale	23	12	0	19,031
73	Tobyhanna	19	12	0	17,860
74	Warren	13	12	0	14,650
75	Morrisville	18	12	0	13,342
76	Boiling Springs	19	12	0	10,068
77	Wyomissing	28	12	0	8,500
78	Mars	20	12	0	8,500
79	Center Valley	21	12	0	7,300
80	Lake Ariel	15	12	0	7,105
81	Beaver	20	12	3	5,799
82	Buckingham	14	12	0	4,760
83	Shrewsbury	20	12	0	4,727
84	Freeland	16	12	0	4,610
85	West Reading	26	12	0	4,300
86	Fairview	23	12	0	4,100
87	New Oxford	18	12	0	3,963
88	Dublin	12	12	0	2,200
89	Windsor	16	12	0	1,332
90	Seneca	14	12	0	692
91	Meshoppen	14	12	0	500
92	Mount Holly Springs	19	12	0	250
93	Newark	25	12	0	95
94	Sinking Spring	26	12	0	0
95	Green Lane	12	12	0	0
96	Akron	21	12	0	0
97	Mcmurray	19	11	0	686,000
98	Pittsburgh	19	11	0	520,000
99	York	17	11	0	206,762
100	Chester	24	11	0	140,437
101	Wilkinsburg	21	11	0	125,000
102	Harrisburg	23	11	0	110,000
103	State College	20	11	0	72,000
104	Altoona	18	11	0	62,500
105	Hummelstown	19	11	0	50,200
106	New Kensington	16	11	0	47,800
107	New Castle	15	11	0	43,286
108	Shamokin	18	11	0	43,000
109	Rices Landing	19	11	0	40,000
110	Northampton	19	11	0	40,000
111	Oakmont	18	11	0	39,901
112	Pottstown	19	11	0	36,000
113	Dunbar	17	11	0	35,409
114	East Stroudsburg	20	11	0	30,000
115	Clarks Summit	15	11	0	23,763
116	St Marys	17	11	0	19,588
117	Red Lion	15	11	0	15,882
118	South Heights	19	11	0	15,000
119	Natrona Heights	18	11	0	13,411
120	Sunbury	21	11	0	11,043
121	Oil City	14	11	0	10,564
122	Fredericktown	18	11	0	10,100
123	Downingtown	19	11	0	9,900
124	Lititz	13	11	0	9,397
125	Franklin	18	11	0	8,600
126	Hollidaysburg	18	11	0	8,523
127	Manheim	12	11	0	6,000
128	White Haven	17	11	0	5,500
129	Millersburg	15	11	1	4,248
130	Morgantown	13	11	0	4,245
131	Masontown	20	11	0	3,700
132	Camp Hill	19	11	0	3,500
133	Fairchance	18	11	0	3,400
134	Bellwood	18	11	0	3,162
135	Seven Fields	20	11	0	3,100
136	Perkasie	13	11	0	3,042
137	Industry	15	11	0	2,750
138	Pipersville	13	11	2	2,605
139	Duncansville	18	11	0	2,550
140	Braddock	21	11	0	2,008
141	Mc Connellsburg	14	11	1	2,000
142	Evans City	22	11	0	1,990
143	Leechburg	18	11	0	1,680
144	Elverson	13	11	0	1,641
145	Mount Morris	19	11	0	1,500
146	Mc Connellstown	15	11	0	1,450
147	East Freedom	18	11	0	1,400
148	Fredericksburg	15	11	0	1,200
149	Leeper	21	11	0	1,150
150	Christiana	16	11	0	1,100
151	Kreamer	12	11	0	980
152	Beaver Meadows	16	11	0	968
153	Coudersport	17	11	0	750
154	Hooversville	17	11	0	645
155	Georgetown	14	11	0	626
156	Skokie	12	11	0	450
157	Marianna	19	11	0	450
158	Richmond	12	11	0	200
159	Montrose	12	11	0	150
160	Hatfield	13	11	0	130
161	Curryville	14	11	2	85
162	Pt Pleasant	12	11	0	56
163	Biglerville	12	11	0	0
164	Blandon	19	11	0	0
165	Matamoras	16	11	0	0
166	Greensburg	16	10	0	150,000
167	Levittown	19	10	0	63,007
168	Sharon	17	10	0	48,000
169	Hazleton	15	10	0	45,000
170	Coatesville	22	10	0	36,960
171	Bloomsburg	16	10	0	29,382
172	Lewistown	16	10	0	26,765
173	Charleroi	17	10	0	26,330
174	Fairless Hills	17	10	0	24,400
175	Uniontown	15	10	0	23,125
176	Philipsburg	15	10	0	20,095
177	Bradford	14	10	0	18,500
178	Meadville	17	10	0	17,339
179	Mcmurry	15	10	0	15,817
180	Sayre	15	10	0	15,569
181	Jamison	17	10	0	14,699
182	Kutztown	12	10	0	14,200
183	Clinton	13	10	0	11,460
184	Gibsonia	12	10	0	10,190
185	Myerstown	10	10	0	9,500
186	Belle Vernon	14	10	0	9,100
187	Adrian	16	10	0	8,000
188	Millersville	12	10	0	7,950
189	Edinboro	14	10	0	7,800
190	Indian Head	15	10	0	7,000
191	Jersey Shore	15	10	0	6,600
192	Monaca	13	10	0	6,500
193	Duquesne	18	10	0	5,565
194	Sharpsville	17	10	0	5,310
195	Oxford	12	10	0	5,280
196	Tarentum	18	10	0	4,927
197	New Wilmington	17	10	0	4,500
198	Baden	16	10	0	4,377
199	Wrightsville	11	10	0	4,076
200	Denver	15	10	0	3,861
201	Petrolia	11	10	0	3,800
202	Midland	16	10	1	3,275
203	East Berlin	11	10	0	3,221
204	Strasburg	11	10	0	3,100
205	Macungie	10	10	0	3,039
206	Walnutport	10	10	0	3,000
207	Reynoldsville	12	10	0	2,908
208	Hughesville	12	10	1	2,800
209	Montgomery	11	10	0	2,700
210	Auburn	10	10	0	2,500
211	Reinholds	15	10	2	2,430
212	Johnsonburg	12	10	0	2,413
213	Cambridge Springs	14	10	0	2,363
214	Mercersburg	12	10	0	2,350
215	Halifax	13	10	0	2,278
216	Leesport	11	10	0	2,200
217	Shoemakersville	12	10	0	2,150
218	Vandergrift	16	10	0	2,049
219	Kittanning	17	10	0	2,000
220	Creighton	18	10	0	2,000
221	Catawissa	12	10	0	1,644
222	Hawthorn	15	10	0	1,500
223	Richlandtown	14	10	0	1,450
224	Troy	11	10	0	1,362
225	Ellsworth	17	10	0	1,250
226	Avondale	11	10	0	1,108
227	Chicora	13	10	0	1,100
228	Farmington Hills	11	10	0	1,040
229	Bernville	12	10	0	1,010
230	Foxburg	11	10	0	925
231	Lewis Run	15	10	0	892
232	Buck Hill Falls	13	10	0	876
233	Gifford	13	10	0	850
234	West Alexander	13	10	0	820
235	Aspers	11	10	0	800
236	Warriors Mark	13	10	0	750
237	Stroudsburg	12	10	0	740
238	Lawrenceville	11	10	0	691
239	Frederick	10	10	0	508
240	Lyon Station	11	10	0	500
241	Etters	11	10	0	475
242	Durham	12	10	0	325
243	Freehold	12	10	0	315
244	Pocono Manor	12	10	0	300
245	Newton Hamilton	14	10	0	270
246	Shippingport	16	10	0	222
247	Darlington	12	10	0	100
248	Douglassville	11	10	0	50
249	Weedville	13	10	0	0
250	Penfield	13	10	0	0
251	Elkland	12	10	0	0
252	Catasauqua	16	10	0	0
253	Bethlehem	12	9	0	117,259
254	Easton	16	9	0	96,867
255	Scranton	13	9	0	58,467
256	Lebanon	16	9	0	57,000
257	University Park	15	9	0	37,000
258	Pottsville	15	9	0	31,850
259	Ambridge	16	9	0	19,500
260	Shippensburg	17	9	0	17,800
261	Blairsville	18	9	0	16,000
262	Slippery Rock	19	9	0	15,778
263	Huntingdon	13	9	0	13,776
264	Indiana	15	9	0	9,638
265	Lehighton	12	9	0	9,000
266	Greenville	13	9	0	8,600
267	Boyertown	10	9	0	8,000
268	Corry	10	9	0	7,800
269	Sewickley	16	9	0	7,781
270	Newmanstown	11	9	0	7,070
271	Bushkill	12	9	0	7,016
272	Ford City	10	9	0	6,744
273	Harmony	14	9	0	6,669
274	Brookville	15	9	0	6,220
275	Sarver	15	9	0	5,849
276	Mount Union	14	9	0	5,801
277	Hellertown	9	9	0	5,800
278	Greencastle	10	9	0	5,500
279	Birdsboro	13	9	0	5,353
280	Towanda	13	9	0	5,000
281	Homer City	10	9	0	4,920
282	Danville	19	9	0	4,897
283	North East	16	9	0	4,601
284	Slatington	13	9	0	4,450
285	Mansfield	11	9	0	4,100
286	Valley View	14	9	0	3,870
287	Springdale	13	9	0	3,405
288	Conyngham	11	9	0	3,230
289	Shawnee On Delaware	11	9	0	3,200
290	Martinsburg	13	9	2	3,160
291	New Bethlehem	12	9	0	3,150
292	Nicholson	11	9	0	3,100
293	Annville	16	9	0	3,100
294	Lake City	11	9	0	2,935
295	Dallas	15	9	0	2,900
296	Bath	10	9	0	2,680
297	Oley	12	9	0	2,204
298	Topton	9	9	0	2,069
299	Rimersburg	10	9	0	1,873
300	Clymer	14	9	0	1,700
301	Shamokin Dam	13	9	0	1,700
302	New Cumberland	10	9	0	1,648
303	Linesville	11	9	0	1,600
304	Harwick	9	9	0	1,600
305	Worthington	12	9	0	1,500
306	Vanport	13	9	0	1,450
307	Falls Creek	12	9	0	1,440
308	Terre Hill	12	9	0	1,295
309	New Hope	10	9	0	1,295
310	Freeport	16	9	0	1,230
311	Royersford	11	9	0	1,200
312	Sandy Lake	12	9	0	1,100
313	Millville	11	9	0	969
314	Liverpool	12	9	0	934
315	Distant	12	9	0	900
316	Quentin	12	9	0	900
317	Pleasantville	11	9	1	892
318	Conneaut Lake	12	9	0	870
319	Wampum	12	9	0	832
320	Mc Alisterville	12	9	0	825
321	Franklintown	10	9	0	705
322	Fombell	10	9	0	700
323	Spring Mills	10	9	0	670
324	Confluence	10	9	0	645
325	Tioga	10	9	0	615
326	Knoxville	11	9	0	590
327	Reno	10	9	0	550
328	Rouseville	11	9	0	523
329	Newell	13	9	0	520
330	Orangeville	10	9	0	508
331	Ulster	12	9	0	500
332	Drums	12	9	0	500
333	Wattsburg	11	9	0	450
334	Herndon	10	9	0	432
335	Morris Run	10	9	0	400
336	New Albany	13	9	0	336
337	Pillow	11	9	0	312
338	Nelson	14	9	0	300
339	Exton	9	9	0	250
340	Apollo	12	9	1	250
341	Fayetteville	11	9	2	250
342	Sacramento	9	9	0	250
343	Harmonsburg	9	9	0	250
344	Springville	11	9	0	165
345	Bangor	10	9	0	130
346	Parkesburg	10	9	0	124
347	North Brunswick	10	9	0	60
348	Bendersville	10	9	0	0
349	Cranesville	10	9	0	0
350	Albion	10	9	0	0
351	Freeburg	11	9	0	0
352	Delaware Water Gap	10	9	0	0
353	Bentleyville	17	9	0	0
354	Addison	11	9	0	0
355	Brackenridge	13	9	0	0
356	Chambersburg	14	8	0	31,048
357	Mill Hall	8	8	0	9,700
358	Doylestown	13	8	2	8,700
359	Lords Valley	14	8	0	8,321
360	Dubois	11	8	0	7,794
361	Honesdale	17	8	0	6,533
362	Portage	12	8	0	6,500
363	Somerset	13	8	0	6,309
364	Titusville	10	8	1	6,146
365	Mifflintown	11	8	0	4,450
366	Brockway	14	8	0	4,384
367	Rochester	14	8	0	4,276
368	Dilliner	12	8	0	4,200
369	Mifflinburg	10	8	0	3,690
370	Union City	13	8	0	3,320
371	Girard	10	8	0	3,301
372	Newport	12	8	0	3,200
373	Meyersdale	11	8	0	3,019
374	Champion	10	8	0	3,000
375	Muncy	9	8	0	2,900
376	Milesburg	8	8	0	2,750
377	Port Allegany	11	8	0	2,591
378	Coopersburg	8	8	0	2,570
379	Patton	9	8	0	2,290
380	Newville	10	8	0	2,070
381	Centre Hall	9	8	0	1,900
382	Elderton	13	8	0	1,875
383	Mont Alto	9	8	0	1,867
384	Waterford	10	8	0	1,800
385	Richland	8	8	0	1,700
386	Saxton	9	8	0	1,675
387	Sykesville	11	8	0	1,500
388	Farmington	9	8	0	1,300
389	Nu Mine	8	8	0	1,200
390	Springboro	10	8	0	1,175
391	New Bloomfield	10	8	0	1,170
392	Benton	9	8	0	1,100
393	York Springs	9	8	0	1,095
394	Polk	10	8	0	1,058
395	Stoneboro	9	8	0	1,051
396	East Brady	9	8	0	1,040
397	Tidioute	10	8	0	1,040
398	Colver	9	8	0	1,000
399	Summerhill	15	8	0	989
400	Schaefferstown	11	8	0	975
401	Parker	10	8	1	900
402	Conneautville	13	8	0	850
403	Wyalusing	10	8	0	700
404	Jamestown	10	8	0	680
405	Elmora	12	8	0	670
406	Ulysses	9	8	0	640
407	Russell	10	8	0	640
408	Mapleton	10	8	0	570
409	Moscow	10	8	0	450
410	Rockton	11	8	0	450
411	Kersey	10	8	0	440
412	Karthaus	9	8	0	430
413	Dushore	11	8	0	400
414	Osceola	11	8	0	400
415	Rew	9	8	0	325
416	Union Dale	10	8	0	325
417	James City	9	8	0	286
418	Glen Campbell	12	8	0	260
419	Loysville	10	8	0	249
420	Rixford	9	8	0	234
421	Defiance	9	8	0	205
422	Brave	10	8	0	200
423	Ronks	8	8	0	140
424	Sparta	10	8	0	125
425	Whitehaven	9	8	0	120
426	Malvern	11	8	0	112
427	Stoystown	9	8	0	97
428	Fleetwood	8	8	0	95
429	Wells Tannery	9	8	0	95
430	New Columbia	9	8	0	93
431	Paradise	10	8	0	90
432	Cresco	10	8	0	84
433	East Earl	10	8	0	50
434	Falls	9	8	0	50
435	Fort Littleton	9	8	0	40
436	Fort Washington	9	8	0	25
437	Hyndman	9	8	0	0
438	Mingoville	10	8	0	0
439	Westover	11	8	1	0
440	Beaver Springs	10	8	0	0
441	Emporium	10	8	0	0
442	Blossburg	9	8	0	0
443	St Petersburg	15	8	0	0
444	Gaines	10	8	0	0
445	Atglen	9	8	0	0
446	Berlin	9	8	0	0
447	Johnstown	10	7	0	49,500
448	Latrobe	15	7	0	30,000
449	Clearfield	14	7	0	14,000
450	Waynesboro	16	7	0	13,200
451	Lock Haven	8	7	0	9,890
452	Windber	12	7	0	9,454
453	Ebensburg	9	7	0	8,500
454	Houtzdale	8	7	0	8,410
455	Grove City	14	7	0	8,322
456	Tamaqua	9	7	0	8,000
457	Davidsville	11	7	0	7,800
458	Mahanoy City	10	7	0	7,300
459	Minersville	8	7	0	7,275
460	Palmerton	8	7	0	7,000
461	Derry	13	7	0	6,500
462	Tyrone	8	7	0	6,500
463	Schuylkill Haven	8	7	0	6,000
464	Montoursville	14	7	0	4,983
465	Ridgway	11	7	0	4,700
466	Mineral Point	7	7	0	4,236
467	Ashland	9	7	0	4,200
468	Nanty Glo	11	7	0	4,076
469	Winburne	10	7	0	3,700
470	Mt Holly Springs	8	7	0	3,261
471	Lykens	12	7	0	3,220
472	Flinton	11	7	0	3,200
473	Cheswick	9	7	0	3,200
474	Gallitzin	9	7	0	3,130
475	Orwigsburg	11	7	0	3,000
476	West Grove	11	7	0	2,873
477	Youngstown	15	7	0	2,730
478	Williamstown	8	7	0	2,390
479	Hastings	12	7	0	2,100
480	Glen Rock	7	7	0	2,000
481	Duncannon	12	7	0	2,000
482	Youngsville	10	7	0	1,957
483	Adamstown	8	7	0	1,800
484	Williamsburg	8	7	0	1,800
485	Blandburg	11	7	0	1,746
486	Twin Rocks	8	7	0	1,650
487	Middleburg	10	7	0	1,600
488	Grampian	9	7	0	1,400
489	Sipesville	12	7	0	1,400
490	Westfield	10	7	0	1,300
491	East Bangor	7	7	0	1,200
492	Cochranton	9	7	0	1,136
493	Portland	11	7	0	1,100
494	Howard	10	7	0	1,001
495	Creekside	11	7	0	1,000
496	Richfield	9	7	0	1,000
497	Torrance	9	7	0	997
498	Riegelsville	7	7	0	980
499	Beavertown	8	7	0	935
500	Bowmanstown	7	7	0	900
501	West Chester	8	7	0	900
502	Eldred	10	7	0	850
503	Wood	10	7	0	800
504	Gratz	9	7	0	738
505	Summerville	10	7	0	700
506	Tionesta	9	7	0	610
507	Dayton	9	7	0	600
508	Susquehanna	9	7	0	563
509	Clintonville	7	7	0	557
510	Mount Gretna	9	7	0	485
511	Portersville	10	7	0	460
512	Shermans Dale	9	7	0	450
513	Fredonia	9	7	0	443
514	Rebersburg	7	7	0	425
515	Osterburg	8	7	0	392
516	Lucinda	8	7	0	380
517	Leraysville	8	7	0	360
518	Cumming	11	7	0	350
519	Six Mile Run	8	7	0	320
520	Knox Dale	10	7	0	300
521	Madisonburg	10	7	0	250
522	Wellsboro	9	7	0	220
523	Cochranville	7	7	0	180
524	Fannettsburg	8	7	0	125
525	Bethelem	8	7	0	100
526	Bethany	8	7	0	99
527	Guys Mills	11	7	0	99
528	Beach Lake	9	7	0	86
529	Mehoopany	8	7	0	85
530	Youngwood	11	7	0	80
531	Irving	8	7	0	80
532	Hood River	9	7	0	75
533	Marsteller	12	7	0	75
534	Rising Sun	7	7	0	55
535	Ferndale	8	7	0	30
536	Northern Cambria	10	7	0	0
537	Alexandria	10	7	0	0
538	Laceyville	8	7	0	0
539	Snow Shoe	8	7	0	0
540	Driftwood	9	7	0	0
541	Arendtsville	8	7	0	0
542	Galeton	8	7	0	0
543	Lansford	7	6	0	9,300
544	New Philadelphia	8	6	0	7,100
545	Selinsgrove	9	6	0	5,584
546	Curwensville	9	6	0	4,500
547	Connellsville	8	6	0	3,630
548	Ligonier	8	6	0	3,293
549	Roaring Spring	7	6	1	3,182
550	Tower City	11	6	0	3,150
551	Jim Thorpe	7	6	0	2,853
552	Point Marion	7	6	0	2,594
553	Alburtis	6	6	0	2,117
554	Shippenville	8	6	0	2,100
555	Loretto	8	6	0	2,072
556	Canton	7	6	0	2,050
557	Irvona	8	6	0	1,980
558	Frenchville	8	6	0	1,700
559	Intercourse	8	6	0	1,640
560	Bedford	7	6	0	1,570
561	Delta	7	6	0	1,400
562	Knox	9	6	0	1,380
563	North Warren	8	6	0	1,300
564	Roulette	7	6	0	1,300
565	Rockwood	14	6	0	1,250
566	Bessemer	8	6	0	1,100
567	Bally	7	6	0	1,090
568	Cabot	8	6	0	950
569	Millheim	8	6	0	902
570	Ringtown	8	6	0	823
571	Hidden Valley	7	6	0	750
572	Penns Creek	7	6	0	725
573	Millerstown	8	6	0	700
574	Petersburg	8	6	0	650
575	Saint Thomas	7	6	0	491
576	Nottingham	6	6	0	473
577	Dalmatia	7	6	0	450
578	Garrett	9	6	0	449
579	Three Springs	6	6	0	442
580	Lopez	7	6	0	425
581	Banner Elk	7	6	0	400
582	Wilcox	8	6	0	396
583	Saltillo	6	6	0	350
584	Arnot	7	6	0	325
585	North Bend	8	6	0	270
586	Harrisville	7	6	0	238
587	Montandon	8	6	0	200
588	Glen Mills	6	6	0	196
589	Havertown	8	6	0	195
590	Mifflin	7	6	0	177
591	Mary D	7	6	0	175
592	New London	6	6	0	129
593	Forksville	7	6	0	100
594	Stevens	6	6	0	98
595	Spring Grove	8	6	0	90
596	Roaring Branch	7	6	0	90
597	Cyclone	6	6	0	87
598	Gillett	7	6	0	85
599	Carrolltown	7	6	0	55
600	North Arlington	8	6	0	50
601	Breezewood	7	6	0	50
602	Binghamton	7	6	0	50
603	Aaronsburg	7	6	0	0
604	Boyers	7	6	0	0
605	Allensville	6	6	0	0
606	Alum Bank	7	6	0	0
607	Mcadoo	6	5	0	6,700
608	Nesquehoning	6	5	0	2,850
609	Markleysburg	6	5	0	2,800
610	Mercer	7	5	0	2,227
611	Everett	6	5	0	2,048
612	Luthersburg	5	5	0	1,570
613	Lilly	6	5	0	1,388
614	Sheffield	8	5	0	1,075
615	New Berlin	8	5	0	990
616	New Milford	6	5	0	979
617	Orefield	5	5	0	600
618	Lake Harmony	8	5	0	500
619	Gap	6	5	0	470
620	New Enterprise	6	5	0	443
621	Ralston	8	5	0	400
622	Lemoyne	6	5	0	350
623	Commodore	6	5	0	350
624	Skytop	7	5	0	300
625	Orlando	7	5	0	293
626	Mt Pleasant M	5	5	0	285
627	Dry Run	6	5	0	278
628	Willow Street	6	5	0	240
629	Sebring	7	5	0	230
630	Lewisberry	6	5	0	225
631	Chestnut Rdg	6	5	0	225
632	Hiawatha	6	5	0	225
633	Gouldsboro	6	5	0	225
634	Perryville	5	5	0	224
635	Port Clinton	5	5	0	200
636	Hazle Township	6	5	0	200
637	Collegeville	6	5	0	165
638	Hazel Hurst	7	5	0	140
639	Jenkintown	7	5	0	139
640	Pequea	6	5	0	121
641	Hillsdale	5	5	0	100
642	Waterville	6	5	0	98
643	Ludlow	6	5	0	81
644	Holtwood	6	5	0	81
645	Adamsville	7	5	0	80
646	Fenelton	7	5	0	76
647	Bechtelsville	6	5	0	75
648	Spring Creek	8	5	0	75
649	Julian	6	5	0	75
650	Woodbridge	6	5	0	60
651	Neelyton	6	5	0	57
652	James Creek	7	5	0	43
653	Blain	6	5	0	0
654	Broad Top	6	5	0	0
655	Whitehall	15	4	0	13,063
656	Summit Hill	6	4	0	2,890
657	Pine Grove	4	4	0	2,711
658	Elizabethville	7	4	0	2,700
659	Fairfield	5	4	0	2,150
660	Port Matilda	4	4	0	1,500
661	Mill Creek	6	4	0	1,108
662	Greentown	8	4	0	1,100
663	Pennsylvania Furnace	4	4	0	1,000
664	Thompsontown	6	4	0	1,000
665	Cairnbrook	4	4	0	910
666	Zieglerville	4	4	0	640
667	Oak Brook	7	4	0	491
668	New Ringgold	5	4	0	416
669	Tannersville	7	4	0	330
670	Laporte	5	4	0	325
671	Glenmoore	5	4	0	300
672	Rehrersburg	5	4	0	300
673	Fleming	5	4	0	290
674	Lake Hiawatha	6	4	0	270
675	Shirleysburg	6	4	0	225
676	Narvon	6	4	0	210
677	Womelsdorf	4	4	0	200
678	Randolph	4	4	0	200
679	Sproul	5	4	0	180
680	Kimberton	6	4	0	100
681	Transfer	6	4	0	88
682	Hills Borough	4	4	0	57
683	East Butler	4	4	0	45
684	Point Pleasant	5	4	0	40
685	Sidman	4	4	0	40
686	Mount Jewett	5	4	0	38
687	Bethel Park	6	4	0	35
688	North Huntingdon	5	4	0	30
689	Fishertown	6	4	0	0
690	Coburn	5	4	0	0
691	Mcveytown	4	4	0	0
692	Troxelville	4	4	0	0
693	Dudley	4	4	0	0
694	Claysburg	4	3	0	2,500
695	Cresson	4	3	0	2,500
696	Smethport	4	3	0	2,400
697	Central City	6	3	0	1,984
698	Renovo	5	3	0	1,800
699	Loysburg	4	3	0	1,700
700	Shinglehouse	4	3	0	1,250
701	Gray	7	3	0	700
702	Las Vegas	6	3	0	550
703	Ellicott City	5	3	0	490
704	Loganton	4	3	0	402
705	Elmhurst Township	5	3	0	353
706	Woodbury	4	3	0	295
707	Hamburg	5	3	0	240
708	Marysville	4	3	0	234
709	Monsey	3	3	0	215
710	Dingmans Ferry	5	3	0	150
711	Beech Creek	4	3	0	140
712	Manchester	5	3	0	140
713	Harford	6	3	0	100
714	Brodheadsville	4	3	0	99
715	Brogue	3	3	0	97
716	Plymouth	4	3	0	92
717	Shohola	6	3	0	89
718	Barto	4	3	0	84
719	Mount Pocono	4	3	0	80
720	York Haven	4	3	0	70
721	Bridgewater	4	3	0	63
722	Blue Ridge Summit	3	3	0	58
723	River Edge	4	3	0	55
724	Prospect	6	3	0	36
725	Elmwood Park	4	3	0	33
726	Jennerstown	4	2	0	1,625
727	Orbisonia	3	2	0	1,200
728	Lahaska	4	2	0	960
729	Port Royal	4	2	0	950
730	Blakeslee	3	2	0	490
731	Templeton	4	2	0	451
732	Cashtown	4	2	0	441
733	Kennerdell	3	2	0	412
734	Kunkletown	4	2	0	389
735	Conestoga	3	2	0	300
736	Lewisburg	4	2	0	280
737	Brick	3	2	0	275
738	Cedaredge	3	2	0	250
739	Effort	3	2	0	229
740	Olyphant	6	2	0	186
741	Volant	3	2	0	150
742	Dalton	3	2	0	150
743	Greenfield Township	5	2	0	150
744	Mount Freedom	3	2	0	100
745	Bainbridge	3	2	0	95
746	South Williamsport	3	2	0	85
747	Monroe Twp	4	2	0	83
748	Jefferson Township	4	2	0	75
749	Orviston	3	2	0	72
750	Peach Bottom	2	2	0	72
751	Toughkenamon	2	2	0	65
752	Secaucus	2	2	0	50
753	Henryville	3	2	0	50
754	Brooklyn	3	2	0	44
755	New Tripoli	2	2	0	44
756	Hershey	3	2	0	40
757	Lima	2	2	0	40
758	Factoryville	3	2	0	35
759	Masury	5	2	0	25
760	Burnside	3	2	0	0
761	Crosby	3	2	0	0
762	Bellefonte	3	1	0	9,500
763	Weatherly	4	1	0	2,612
764	South Mountain	2	1	0	950
765	Salisbury	3	1	0	725
766	Springtown	1	1	0	600
767	Lakeville	2	1	0	499
768	Mexico	3	1	0	499
769	Tremont	2	1	0	495
770	Shavertown	3	1	0	480
771	Berwick	2	1	0	475
772	Berwyn	2	1	0	439
773	Hamlin	2	1	0	400
774	Pheonixville	2	1	0	350
775	Landisburg	3	1	0	300
776	Bullville	2	1	0	250
777	Nassau	1	1	0	180
778	Hawley	1	1	0	180
779	Roaring Brook Twp	3	1	0	175
780	Stillwater	2	1	0	166
781	Ashfield	1	1	0	152
782	Ransom Twp	2	1	0	150
783	Gilbert	1	1	0	150
784	Martins Creek	3	1	0	150
785	Dundee	2	1	0	135
786	Schnecksville	2	1	0	130
787	Silver Spring	2	1	0	125
788	Newfoundland	2	1	0	115
789	Pine Bush	2	1	0	99
790	King Of Prussia	3	1	0	98
791	Kirkwood	2	1	0	91
792	Limeport	1	1	0	90
793	Scotrun	1	1	0	90
794	Clifford Twp	3	1	0	90
795	Palmyra	2	1	0	77
796	Bowmansville	2	1	0	70
797	Chadds Ford	2	1	0	66
798	Millmont	2	1	0	64
799	Wawa	2	1	0	53
800	East Norriton	2	1	0	50
801	Mohnton	2	1	0	40
802	Friendsville	3	1	0	40
803	Grand Rapids	3	1	0	38
804	Port Deposit	1	1	0	30
805	Woodland Park	4	1	0	29
806	West Springfield	3	1	0	0
807	Genesee	4	1	0	0
808	Boswell	1	0	0	2,900
809	Mcclure	1	0	0	845
810	Sigel	1	0	0	700
811	West Covina	0	0	0	400
812	Mountain Top	4	0	0	384
813	Linden	1	0	0	360
814	Stump Creek	1	0	0	354
815	Mc Veytown	1	0	0	342
816	Butler	1	0	0	300
817	Needmore	0	0	0	276
818	Dysart	2	0	0	216
819	Oveido	1	0	0	200
820	Brandon	2	0	0	200
821	Saylorsburg	2	0	0	160
822	Valencia	1	0	0	141
823	Woodward	0	0	0	140
824	Milford	0	0	0	120
825	Tafton	0	0	0	101
826	Nicktown	1	0	0	92
827	Greeley	1	0	0	90
828	Friedens	3	0	0	75
829	Saxonburg	2	0	0	72
830	West Middlesex	3	0	0	70
831	Rome	1	0	0	65
832	Austin	2	0	0	61
833	Riverside	0	0	0	60
834	Maspeth	1	0	0	60
835	Alpharetta	1	0	0	57
836	Allenhurst	1	0	0	56
837	Morristown	1	0	0	53
838	Thorndale	1	0	0	45
839	Harrison Valley	3	0	0	0

Recommended Filtration for Pennsylvania

Based on the most common contaminants found across Pennsylvania (Total trihalomethanes (TTHMs), Chloroform, Bromodichloromethane), we recommend a reverse osmosis system or high-quality carbon block filter to remove disinfection byproducts and their precursors.

Echo RO System

Removes up to 99.9% of contaminants. The gold standard for drinking water in Pennsylvania homes.

View RO Systems

Echo Whole-Home Filter

Protect every tap in your home from chlorine, VOCs, and disinfection byproducts.

View Whole-Home Filters

Echo Hydrogen Water Flask

Once your water is clean, supercharge it with molecular hydrogen for antioxidant and anti-inflammatory benefits.

Shop Hydrogen Flask

Frequently Asked Questions

Is Pennsylvania tap water safe to drink?

Water quality varies significantly across Pennsylvania. Of the 839 cities analyzed, the average city has 7.5 contaminants above EWG health guidelines. The best water quality was found in Boswell. We recommend checking your specific city's report for detailed information.

What city has the best water in Pennsylvania?

Based on our analysis, Boswell has the fewest contaminants above EWG health guidelines in Pennsylvania, with 0 above guideline levels.

What city has the worst water in Pennsylvania?

Based on our analysis, Brownstown has the most contaminants above EWG health guidelines in Pennsylvania, with 20 above guideline levels.

What's the best water filter for Pennsylvania residents?

For most Pennsylvania households, we recommend a reverse osmosis (RO) system for drinking water and a whole-home filter for showers and baths. The specific recommendation depends on your city's contaminant profile — check your city's report for personalized guidance.

National Water Quality Reports

Data sources: Environmental Working Group (EWG) Tap Water Database, U.S. EPA Safe Drinking Water Information System (SDWIS)

Last updated: September 2026

Methodology: Contaminant levels are compared against both EPA legal limits (Maximum Contaminant Levels) and EWG health guidelines, which are often stricter and based on the latest scientific research.

Pennsylvania Water Quality Report (2026)