Oregon Water Quality — 213 Cities Tested

Latest water news in Oregon

Recent reporting on Oregon drinking water — boil-water advisories, regulatory action, and infrastructure events.

May 7, 2026

Data Centers Are Drinking Your Water: How AI Cooling Strains Local Drinking Supplies

Google's data centers used 8.1B gallons in 2024. Loudoun County's grew 250% in four years. Inside the AI water bill — and what it means for your tap.

Read full story →

Analysis

Oregon water quality overview

Oregon's drinking water quality is fair overall, with an average score of 62.3 out of 100 across 213 cities tested. The median score is 60, serving a total population of 3,737,312 residents. 46% of cities scored a D or F, pointing to significant water quality challenges in parts of the state. PFAS "forever chemicals" were detected in 25 of 213 cities tested (12%). 8 cities exceed the 2024 EPA maximum contaminant levels. 6 cities have lead levels exceeding the EPA action level of 15 ppb, often indicating aging infrastructure with lead service lines or lead solder. The state relies on a mix of water sources: 94 cities use groundwater while 119 draw from surface water such as rivers, lakes, and reservoirs.

Key Concerns

Issues to watch in Oregon

25 cities

PFAS Detected

12% of tested cities have PFAS in their water supply.

6 cities

Lead Exceedances

Lead levels above the EPA action level of 15 ppb (90th percentile).

205 cities

Health Violations

73,832 total violations recorded, 211 with unresolved issues.

48 cities

Failing Systems

Received a grade of F, indicating serious water quality issues.

Contaminant Data

Explore contaminants in Oregon

Lead in Oregon → Ranked by 90th percentile level (ppb) PFAS in Oregon → Ranked by compounds detected Copper in Oregon → Ranked by 90th percentile level (mg/L)

More contaminants tested in Oregon

HAA5 → Chromium-6 → Arsenic → Nitrate → Strontium → 1,4-Dioxane → Manganese → Vanadium → Chlorate → Molybdenum → Cobalt → Lithium → NDMA →

State context

16

Superfund sites in Oregon

EPA National Priorities List

26.4%

of Oregon residents on fluoridated water

CDC, 2020

939,532

lbs released to surface water

Top 10 TRI facilities, 2023

16.7%

of Oregon domestic wells exceed EPA arsenic limit

USGS, 287 samples · 10 µg/L MCL

Domestic well chemistry

Private-well water in Oregon

Based on USGS Powell Domestic-Well Database — 391 private wells sampled across Oregon. These wells are not regulated by the EPA; if you draw your tap from a private well, the public-system grade above does not apply to you.

2.0 µg/L

Median arsenic in domestic wells

P90 17.0 µg/L · max 146.0 µg/L

87 µg/L

Median manganese in domestic wells

22.4% exceed 300 µg/L aesthetic limit

Industrial pollution

Top industrial water polluters in Oregon

Industrial polluters nearby

The 10 facilities reporting the most pounds released to surface water in Oregon, 2023.

Total reported releases to surface water: 939,532 lbs

Facility	Top chemical	To surface water (lbs/yr)
SILTRONIC CORP Computers and Electronic Products · NA PORTLAND, OR97210	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	388,619
GEORGIA-PACIFIC TOLEDO LLC Paper · KOCH INC TOLEDO, OR97391	Hydrogen sulfide	129,986
INTERNATIONAL PAPER Paper · INTERNATIONAL PAPER CO SPRINGFIELD, OR97478	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	110,566
CASCADE PACIFIC PULP HALSEY PULP MILL Paper · INTERNATIONAL GRAND INVESTMENT CORP HALSEY, OR97348	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	85,836
DYNO NOBEL- ST.HELENS PLANT Chemicals · DYNO NOBEL INC DEER ISLAND, OR97054	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	75,753

+ 5 more facilities

Source: EPA Toxic Release Inventory (TRI) 2023

Test your own tap

Get your Oregon water tested

City-level data shows the source and infrastructure picture — but lead and other home-plumbing issues only show up at your tap. Find a state-certified lab, see what to test for, and what it costs.

Grade Distribution

How Oregon cities scored

A: 33 B: 50 C: 33 D: 49 F: 48

Best Cities

Worst Cities

City Map

Water quality across Oregon

Each dot is a city, colored by its water quality grade. Size reflects population served. Click any city to view its full water report.

All Cities

213 cities in Oregon

Full rankings →

#	City	Grade	Score	Population	Violations
1	Sunriver	A+	96.8	4K	21
2	Gearhart	A	93.6	2K	21
3	Mill City	A	93.4	2K	66
4	Crescent	A	93.3	900	15
5	Toledo	A	93.1	4K	24
6	Tualatin	A	92.6	28K	8
7	Christmas Valley	A	92.5	950	60
8	Seal Rock	A	92.4	6K	10
9	Lakeside	A	92.4	2K	55
10	Donald	A	91	1K	39
11	Cove	A	90.5	550	14
12	Aumsville	A	90.2	4K	49
13	Depoe Bay	A-	89.9	1K	44
14	Phoenix	A-	89.4	6K	14
15	Hines	A-	89.4	2K	44
16	Gervais	A-	89.3	3K	15
17	Weston	A-	89.3	714	16
18	Florence	A-	88.6	14K	51
19	Willamina	A-	88.6	2K	82
20	Athena	A-	88.6	1K	38
21	Troutdale	A-	88.5	16K	50
22	Veneta	A-	88.3	6K	36
23	Echo	A-	87.9	632	17
24	John Day	A-	87.8	2K	13
25	Merrill	A-	87.7	907	37
26	Dayton	A-	87.6	3K	95
27	Elgin	A-	87.6	2K	32
28	Union	A-	87.1	2K	21
29	Rockaway Beach	A-	86.9	1K	93
30	Arlington	A-	86.8	628	18
31	Gleneden Beach	A-	86.3	6K	24
32	Pilot Rock	A-	86	1K	59
33	Sublimity	A-	85.3	3K	52
34	Stayton	B+	84.7	8K	41
35	Warrenton	B+	84.6	9K	121
36	Harbor	B+	84.2	3K	51
37	Mount Vernon	B+	83.5	510	93
38	Powers	B+	83.4	712	184
39	Forest Grove	B+	83	27K	41
40	Madras	B+	82.1	16K	160
41	Parkdale	B+	81.7	867	127
42	Wallowa	B+	81.7	840	38
43	Philomath	B+	81.6	5K	102
44	Heppner	B+	81.6	1K	61
45	Banks	B+	81.2	2K	186
46	Coburg	B+	81.2	1K	42
47	La Pine	B+	81.1	4K	22
48	Siletz	B+	81.1	2K	52
49	Mcminnville	B+	81	35K	83
50	Glide	B+	80.9	2K	116
51	Lincoln City	B+	80.7	21K	73
52	Halsey	B+	80.6	800	23
53	Condon	B+	80.5	775	67
54	Wood Village	B	80	4K	116
55	Manzanita	B	79.9	3K	83
56	Turner	B	79.6	3K	85
57	Malin	B	78.8	815	94
58	Bay City	B	78.6	1K	60
59	Independence	B	78.4	10K	138
60	Joseph	B	78	1K	72
61	Mt. Angel	B	77.7	4K	95
62	Netarts	B	77.4	2K	56
63	Columbia City	B	77.3	2K	58
64	Winston	B	76.9	8K	195
65	Sutherlin	B	76.8	8K	75
66	Neskowin	B	76.5	2K	84
67	Glendale	B	75.6	864	88
68	Rhododendron	B	75.5	980	166
69	Gresham	B	75.2	77K	69
70	Canyon City	B-	74.3	666	38
71	Dallas	B-	74.1	18K	41
72	Carlton	B-	73.7	2K	133
73	Talent	B-	73.6	6K	62
74	Falls City	B-	73.3	1K	155
75	Nyssa	B-	72.6	3K	75
76	Sherwood	B-	72	20K	226
77	Sweet Home	B-	71.4	10K	152
78	Lowell	B-	71.4	1K	72
79	Ontario	B-	71.1	15K	154
80	La Grande	B-	71	14K	199
81	Prairie City	B-	70.7	841	72
82	Ophir	B-	70.6	2K	124
83	Odell	B-	70	6K	101
84	Oakridge	C+	69.3	3K	53
85	Cannon Beach	C+	69.3	2K	71
86	Boardman	C+	69.2	6K	166
87	Wilsonville	C+	68.3	26K	184
88	Eagle Point	C+	68	10K	60
89	Baker City	C+	67.4	10K	228
90	Creswell	C+	66.9	6K	124
91	Jefferson	C+	66.5	3K	161
92	Jacksonville	C+	66	3K	204
93	Adair Village	C	65	875	224
94	Sisters	C	64.9	6K	325
95	Cascade Locks	C	64.9	1K	59
96	Huntington	C	64.7	510	161
97	Tigard	C	64.2	63K	103
98	Oceanside	C	63.1	670	187
99	Silverton	C	62.7	11K	239
100	Stanfield	C	62.7	2K	306
101	Rogue River	C	62.2	3K	188
102	Scio	C	61.3	940	187
103	Vale	C	61.2	2K	121
104	Yoncalla	C	61	1K	253
105	Keizer	C	60.4	39K	315
106	Garibaldi	C	60.2	1K	76
107	Gladstone	C	60	12K	49
108	Tangent	C	60	649	352
109	Dufur	C-	59.8	643	165
110	Lafayette	C-	59.5	4K	219
111	Wamic	C-	59.2	1K	353
112	Reedsport	C-	59.1	5K	173
113	Antelope	C-	58.6	543	177
114	Canyonville	C-	58.3	2K	107
115	Drain	C-	58.3	1K	68
116	Corbett	C-	57.3	3K	201
117	Oakland	D+	54.4	1K	198
118	Enterprise	D+	53.1	3K	225
119	Welches	D+	53	2K	395
120	Pendelton	D+	52	1K	619
121	Dundee	D+	51.8	3K	322
122	Myrtle Creek	D+	51.2	7K	366
123	Myrtle Point	D+	51	3K	351
124	Colton	D+	51	2K	326
125	Coos Bay	D+	50	35K	841
126	Hood River	D+	50	15K	455
127	Boring	D+	50	4K	723
128	Burns	D+	50	3K	631
129	Grand Ronde	D+	50	3K	262
130	Aurora	D+	50	3K	327
131	Chiloquin	D+	50	1K	281
132	Island City	D+	50	1K	109
133	Westport	D+	50	828	515
134	Maupin	D	49.8	560	133
135	Fairview	D	49.5	11K	301
136	Sheridan	D	49.5	8K	474
137	Harrisburg	D	49.5	4K	318
138	Oregon City	D	49	34K	106
139	Terrebonne	D	49	6K	331
140	Clatskanie	D	49	3K	1126
141	Irrigon	D	49	2K	141
142	Vernonia	D	49	2K	330
143	Gold Hill	D	49	1K	211
144	Mapleton	D	49	600	239
145	Umatilla	D	48.8	8K	292
146	Redmond	D	48.2	42K	993
147	Amity	D	48	4K	481
148	Clackamas	D	47.4	51K	532
149	Ashland	D	47.2	22K	601
150	Canby	D	47.1	19K	274
151	Brookings	D	47	7K	468
152	Central Point	D	46.6	21K	594
153	Lakeview	D	46	2K	101
154	Shady Cove	D	46	519	338
155	Monmouth	D	45.5	14K	140
156	Lake Oswego	D	45.4	48K	509
157	Waldport	D	45	5K	454
158	Gaston	D	45	3K	268
159	Rainier	D	45	3K	1167
160	Cave Junction	D	45	3K	523
161	Nehalem	D	45	2K	179
162	Port Orford	D	45	1K	374
163	Pacific City	D	45	1K	113
164	Otis	D	45	1K	281
165	Yachats	D	45	1K	168
166	Woodburn	F	44.5	30K	564
167	Brownsville	F	44.5	2K	281
168	Sandy	F	44	15K	1478
169	Cottage Grove	F	44	12K	1157
170	Seaside	F	44	8K	721
171	Warm Springs	F	44	4K	1114
172	Rickreall	F	44	2K	123
173	Scappoose	F	43.9	10K	1636
174	Cornelius	F	43.8	15K	186
175	Salem	F	43.6	217K	3309
176	Pendleton	F	43.6	18K	352
177	Astoria	F	43.5	18K	839
178	Grants Pass	F	43.4	40K	2789
179	Prineville	F	43.2	13K	1072
180	Milton-Freewater	F	43.2	7K	435
181	Hubbard	F	43.2	4K	322
182	Corvallis	F	43	63K	599
183	Lyons	F	43	2K	329
184	Albany	F	42.6	62K	921
185	Springfield	F	42.5	70K	285
186	Newberg	F	42.5	35K	3984
187	Molalla	F	42.5	12K	794
188	Newport	F	42.5	10K	546
189	Estacada	F	42.5	6K	635
190	Lebanon	F	42.2	20K	324
191	Riddle	F	42	2K	785
192	Yamhill	F	42	2K	326
193	St Helens	F	41.9	18K	995
194	Hillsboro	F	41.8	95K	317
195	Klamath Falls	F	41.8	43K	1458
196	Coquille	F	41.4	5K	632
197	Bend	F	41	134K	1731
198	West Linn	F	41	29K	380
199	Tillamook	F	41	11K	733
200	Junction City	F	41	7K	228
201	Beaverton	F	40.7	317K	208
202	Hermiston	F	40.6	21K	1292
203	Happy Valley	F	40.5	50K	298
204	The Dalles	F	40.5	18K	1081
205	Milwaukie	F	40	51K	380
206	Bandon	F	40	3K	656
207	Portland	F	39.4	752K	2021
208	Cloverdale	F	38.3	990	254
209	Gold Beach	F	37.5	3K	312
210	Roseburg	F	30	46K	569
211	Medford	F	29.4	107K	604
212	Mulino	F	29	790	217
213	Eugene	F	28	180K	2141

Counties

Browse Oregon counties

Baker 2 cities · avg 66.1 Benton 3 cities · avg 63.2 Clackamas 17 cities · avg 48.6 Clatsop 6 cities · avg 64.2 Columbia 6 cities · avg 51 Coos 6 cities · avg 59.7 Crook 1 city · avg 43.2 Curry 5 cities · avg 56.9 Deschutes 5 cities · avg 66.4 Douglas 12 cities · avg 60.4 Gilliam 2 cities · avg 83.7 Grant 4 cities · avg 79.1 Harney 2 cities · avg 69.7 Hood River 4 cities · avg 66.7 Jackson 10 cities · avg 57.7 Jefferson 2 cities · avg 65.5 Josephine 2 cities · avg 44.2 Klamath 5 cities · avg 70.3 Lake 2 cities · avg 69.3 Lane 11 cities · avg 60.9 Lincoln 10 cities · avg 70.1 Linn 10 cities · avg 58.9 Malheur 3 cities · avg 68.3 Marion 14 cities · avg 69.2 Morrow 3 cities · avg 66.6 Multnomah 6 cities · avg 65 Polk 7 cities · avg 59 Tillamook 11 cities · avg 62.9 Umatilla 9 cities · avg 65.6 Union 5 cities · avg 77.2 Wallowa 3 cities · avg 70.9 Wasco 5 cities · avg 53.6 Washington 9 cities · avg 62.7 Yamhill 9 cities · avg 64

ZIP Codes

Browse Oregon by ZIP code

Look up water quality by ZIP code to find the systems serving your area.

View all Oregon ZIP codes →

FAQ

Frequently asked questions about Oregon's water

Is Oregon's tap water safe to drink?

Oregon's water quality varies by city. The statewide average grade is C (62.3/100). 39% of cities scored an A or B, while 46% received a D or F. Check your specific city for detailed results.

Which Oregon cities have the best water quality?

The top-rated cities are Sunriver (A+), Gearhart (A), Mill City (A). These cities scored highest based on violation history, lead levels, PFAS contamination, and regulatory compliance.

Which Oregon cities have the worst water quality?

The lowest-rated cities are Eugene (F), Mulino (F), Medford (F). We recommend residents in these areas consider water filtration and review their city's specific contaminant data.

How many Oregon cities have PFAS in their water?

25 out of 213 cities tested positive for PFAS "forever chemicals" (12%). 8 cities exceed the 2024 EPA maximum contaminant levels. Reverse osmosis or activated carbon filters can help reduce PFAS exposure.

Do any Oregon cities have dangerous lead levels?

6 cities exceed the EPA lead action level of 15 ppb. Lead contamination typically comes from aging pipes and lead service lines rather than the water source itself. An NSF 53-certified filter can effectively remove lead from tap water.

Oregon Water Quality Report