Oregon Water Systems

Compiled by PlainEnviro · August 25, 2026

943 community water systems in Oregon, ranked by violation count. Data from EPA Safe Drinking Water Information System (SDWIS).

Water Systems

943

Health-Based Violation Records

2,683

Health Violations

396 systems

Population Served

3,755,319

Oregon community water systems are regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act; each utility files compliance results with the state's primacy agency and, for federally listed contaminants, with the U.S. Environmental Protection Agency directly. PlainEnviro's health-based SDWIS extract above counts health-based exceedances only -- monitoring and reporting violations are not present in these figures.

Violation counts reflect both infrastructure realities and reporting diligence, a state with more small rural systems will accumulate more monitoring-type violations without necessarily delivering worse water. Health-based violations are the stronger safety signal. A past violation does not itself indicate current unsafe water; utilities must notify customers, remediate, and publish an annual Consumer Confidence Report. All numbers below draw directly from the federal SDWIS record.

Which water systems have violations? (188)

#	System Name	City	Source	Violations	Pop. Served	Health
1	MONROE, CITY OF Harrisburg	Harrisburg	Surface Water	103	723	Yes
2	SKYVIEW ACRES WATER COMPANY Sandy	Sandy	Surface Water	98	200	Yes
3	VALE, CITY OF Vale	Vale	Groundwater	82	1,837	Yes
4	ADRIAN, CITY OF Adrian	Adrian	Groundwater	50	159	Yes
5	SANDY, CITY OF Sandy	Sandy	Surface Water	44	12,991	Yes
6	WARM SPRINGS WATER TREATMENT PLANT Warm Springs	Warm Springs	Surface Water	43	3,800	Yes
7	SIMNASHO SCHOOLIE Warm Springs	Warm Springs	Groundwater	32	350	Yes
8	MIDLAND WATER ASSOCIATION Clatskanie	Clatskanie	Surface Water	28	160	Yes
9	NYSSA, CITY OF Nyssa	Nyssa	Groundwater	27	3,285	Yes
10	RICHLAND, CITY OF Richland	Richland	Surface Water	21	165	Yes
11	CANYONVILLE, CITY OF Canyonville	Canyonville	Surface Water	20	1,662	Yes
12	GLADSTONE, CITY OF Gladstone	Gladstone	Surface Water	18	12,121	Yes
13	YOUNG LIFE Antelope	Antelope	Surface Water	18	497	Yes
14	PARADISE/ROGUE MEADOWS WS Clackamas	Clackamas	Groundwater	18	165	Yes
15	UMPQUA RANCH COOP Idleyld	Idleyld	Surface Water	17	161	Yes
16	SHADY OAKS ESTATES Portland	Portland	Groundwater	14	648	Yes
17	WATSECO-BARVIEW WATER DISTRICT Garibaldi	Garibaldi	Groundwater	14	450	Yes
18	REEDSPORT, CITY OF Reedsport	Reedsport	Surface Water	13	4,836	Yes
19	COLTON WATER DISTRICT Colton	Colton	Surface Water	13	1,500	Yes
20	DRAIN, CITY OF Drain	Drain	Surface Water	13	1,194	Yes
21	MONTGOMERY PLACE WATER SYSTEM Portland	Portland	Groundwater	13	207	Yes
22	WESTERN HILLS MH ESTATES Rainier	Rainier	Groundwater	12	375	Yes
23	INTERLACHEN WATER PUD Fairview	Fairview	Groundwater	12	360	Yes
24	YOUNGS RIVER LEWIS & CLARK WD Astoria	Astoria	Surface Water	11	2,580	Yes
25	MAPLETON WATER DISTRICT Mapleton	Mapleton	Surface Water	11	600	Yes
26	OCEANSIDE WATER DISTRICT Oceanside	Oceanside	Surface Water	11	500	Yes
27	PAISLEY, CITY OF Paisley	Paisley	Groundwater	11	245	Yes
28	LAFAYETTE, CITY OF Lafayette	Lafayette	Surface Water	9	4,423	Yes
29	RHODODENDRON WTR ASSOC Rhododendron	Rhododendron	Surface Water	9	980	Yes
30	ALDER CREEK BARLOW WATER DIST Sandy	Sandy	Surface Water	9	300	Yes
31	GOLD HILL, CITY OF Gold Hill	Gold Hill	Surface Water	8	1,335	Yes
32	PORT ORFORD, CITY OF Port Orford	Port Orford	Surface Water	8	1,200	Yes
33	ROW RIVER VALLEY WATER DIST Dorena	Dorena	Surface Water	8	340	Yes
34	HILAND WC - LOMBARD Newberg	Newberg	Groundwater	8	300	Yes
35	HIGHLINE OAKS WATER UTILITY Portland	Portland	Groundwater	8	242	Yes
36	LANGLOIS WATER DISTRICT Langlois	Langlois	Surface Water	8	220	Yes
37	SUMPTER, CITY OF Sumpter	Sumpter	Surface Water	8	208	Yes
38	EVERETT SQUARE WINDCREST ESTATES Portland	Portland	Groundwater	8	204	Yes
39	LAURELWOOD WATER USERS Gaston	Gaston	Groundwater	8	200	Yes
40	HILAND WC - RIVERBEND Newberg	Newberg	Surface Water	8	172	Yes
41	BURNS PAIUTE Burns	Burns	Groundwater	8	155	Yes
42	BROOKINGS, CITY OF Brookings	Brookings	Groundwater	7	7,120	Yes
43	HILAND WC - PENTICTON/COLLEGE PARK Newberg	Newberg	Groundwater	7	710	Yes
44	DALLAS, CITY OF Dallas	Dallas	Surface Water	6	17,911	Yes
45	ESTACADA, CITY OF Estacada	Estacada	Surface Water	6	5,750	Yes
46	COQUILLE, CITY OF Coquille	Coquille	Surface Water	6	3,953	Yes
47	RIVERSTONE MOBILE HOME PARK Cottage Grove	Cottage Grove	Groundwater	6	168	Yes
48	CANBY REGENCY Canby	Canby	Groundwater	5	265	Yes
49	SUNSET LAKE RV PARK Redmond	Redmond	Groundwater	5	170	Yes
50	CARLTON, CITY OF Carlton	Carlton	Surface Water	4	2,270	Yes
51	CITY OF RAINIER Rainier	Rainier	Surface Water	4	1,932	Yes
52	RICKREALL WATER ASSOCIATION Rickreall	Rickreall	Groundwater	4	1,650	Yes
53	ATHENA, CITY OF Athena	Athena	Groundwater	4	1,238	Yes
54	JOSEPH, CITY OF Joseph	Joseph	Surface Water	4	1,182	Yes
55	BUELL-RED PRAIRIE WD Sheridan	Sheridan	Surface Water	4	800	Yes
56	LAIDLAW WATER DISTRICT Bend	Bend	Groundwater	4	740	Yes
57	HILAND WC - ILLAHE GOLF CLUB ESTATES Newberg	Newberg	Groundwater	4	561	Yes
58	SUNSTONE - BOULDER CREEK Newberg	Newberg	Surface Water	4	350	Yes
59	ROCK CREEK WATER DISTRICT Grand Ronde	Grand Ronde	Surface Water	4	300	Yes
60	SMGV/WIDGI CREEK Portland	Portland	Groundwater	4	300	Yes
61	HEBO JOINT WATER & SANITARY AUTH Hebo	Hebo	Groundwater	4	250	Yes
62	IDANHA CITY WATER Idanha	Idanha	Surface Water	4	168	Yes
63	ELDERBERRY NEHALEM WS Seaside	Seaside	Groundwater	4	160	Yes
64	OAK LODGE WATER SERVICES Milwaukie	Milwaukie	Surface Water	3	30,000	Yes
65	SILVERTON, CITY OF Silverton	Silverton	Surface Water	3	10,484	Yes
66	SCAPPOOSE, CITY OF Scappoose	Scappoose	Surface Water	3	8,710	Yes
67	CROOKED RIVER RANCH WTR CO Terrebonne	Terrebonne	Groundwater	3	4,000	Yes
68	MOUNT ANGEL, CITY OF Mt. Angel	Mt. Angel	Groundwater	3	3,650	Yes
69	MANZANITA, CITY OF Manzanita	Manzanita	Groundwater	3	3,200	Yes
70	MCNULTY WATER PUD St. Helens	St. Helens	Groundwater	3	2,500	Yes
71	COLUMBIA CITY MUN WATERWORKS Columbia City	Columbia City	Groundwater	3	1,995	Yes
72	FAIRVIEW WATER DISTRICT Tillamook	Tillamook	Groundwater	3	1,930	Yes
73	AMITY, CITY OF Amity	Amity	Surface Water	3	1,810	Yes
74	NETARTS WATER DISTRICT Netarts	Netarts	Surface Water	3	1,800	Yes
75	NESKOWIN REG WATER DIST Neskowin	Neskowin	Surface Water	3	1,735	Yes
76	CASCADE LOCKS, CITY OF Cascade Locks	Cascade Locks	Groundwater	3	1,398	Yes
77	YONCALLA, CITY OF Yoncalla	Yoncalla	Surface Water	3	1,050	Yes
78	PRAIRIE CITY Prairie City	Prairie City	Surface Water	3	841	Yes
79	BEAVER WATER DISTRICT Cloverdale	Cloverdale	Surface Water	3	600	Yes
80	NEAHKAHNIE WATER DISTRICT Nehalem	Nehalem	Groundwater	3	600	Yes
81	MARCOLA WATER DISTRICT Springfield	Springfield	Groundwater	3	600	Yes
82	MOUNT VERNON, CITY OF Mount Vernon	Mount Vernon	Groundwater	3	510	Yes
83	SCOTTS MILLS, CITY OF Scotts Mills	Scotts Mills	Groundwater	3	421	Yes
84	MAUPIN, CITY OF Maupin	Maupin	Groundwater	3	420	Yes
85	HIGH DESERT ESTATES Prineville	Prineville	Groundwater	3	380	Yes
86	IONE, CITY OF Ione	Ione	Groundwater	3	330	Yes
87	SUNSTONE - BEAR CREEK Newberg	Newberg	Surface Water	3	275	Yes
88	BANDON COASTAL DUNES Bandon	Bandon	Groundwater	3	225	Yes
89	FALCON COVE BEACH WD Arch Cape	Arch Cape	Groundwater	3	215	Yes
90	HILAND WC - WESTWOOD Newberg	Newberg	Groundwater	3	200	Yes
91	SHANGRI-LA WATER DISTRICT Springfield	Springfield	Surface Water	3	200	Yes
92	COUNTRY ESTATES MOBILE PARK Grants Pass	Grants Pass	Groundwater	3	175	Yes
93	VIEW POINT TRAILER COURT The Dalles	The Dalles	Groundwater	3	160	Yes
94	BEND, CITY OF Bend	Bend	Surface Water	2	77,704	Yes
95	MONMOUTH, CITY OF Monmouth	Monmouth	Surface Water	2	11,651	Yes
96	FAIRVIEW, CITY OF Fairview	Fairview	Groundwater	2	9,963	Yes
97	FLORENCE, CITY OF Florence	Florence	Groundwater	2	9,561	Yes
98	JUNCTION CITY WATER UTILITIES Junction City	Junction City	Groundwater	2	7,000	Yes
99	RAINBOW WATER DISTRICT Springfield	Springfield	Surface Water	2	6,300	Yes
100	TALENT, CITY OF Talent	Talent	Surface Water	2	6,293	Yes
101	HECETA WATER PEOPLES UTILITY DISTRICT Florence	Florence	Surface Water	2	4,921	Yes
102	CHENOWITH PUD The Dalles	The Dalles	Groundwater	2	4,500	Yes
103	HARRISBURG, CITY OF Harrisburg	Harrisburg	Groundwater	2	3,684	Yes
104	DUNDEE, CITY OF Dundee	Dundee	Groundwater	2	2,960	Yes
105	LUCKIAMUTE DOMESTIC WATER COOP Monmouth	Monmouth	Surface Water	2	2,738	Yes
106	CAVE JUNCTION, CITY OF Cave Junction	Cave Junction	Surface Water	2	2,160	Yes
107	VERNONIA, CITY OF Vernonia	Vernonia	Surface Water	2	2,100	Yes
108	BANKS WATER DEPARTMENT Banks	Banks	Surface Water	2	2,070	Yes
109	BROWNSVILLE, CITY OF Brownsville	Brownsville	Surface Water	2	1,906	Yes
110	HILLSBORO-CHERRY GROVE Hillsboro	Hillsboro	Surface Water	2	1,628	Yes
111	GLIDE WATER ASSOCIATION Glide	Glide	Surface Water	2	1,523	Yes
112	NESIKA BEACH-OPHIR WD Ophir	Ophir	Groundwater	2	1,500	Yes
113	BAY CITY WATER SYSTEM Bay City	Bay City	Groundwater	2	1,400	Yes
114	LYONS MEHAMA WATER DISTRICT Lyons	Lyons	Surface Water	2	1,300	Yes
115	PACIFIC CITY JOINT WATER - SAN AUTH Pacific City	Pacific City	Surface Water	2	1,000	Yes
116	SCIO, CITY OF Scio	Scio	Groundwater	2	900	Yes
117	GLENDALE, CITY OF Glendale	Glendale	Surface Water	2	864	Yes
118	MULINO WATER DISTRICT Mulino	Mulino	Groundwater	2	700	Yes
119	CANYON CITY WATER DEPARTMENT Canyon City	Canyon City	Surface Water	2	666	Yes
120	WHEELER, CITY OF Wheeler	Wheeler	Groundwater	2	400	Yes
121	HILAND WC - ECHO MOUNTAIN Newberg	Newberg	Groundwater	2	362	Yes
122	MANNA HOUSE CHURCH Portland	Portland	Groundwater	2	300	Yes
123	RINK CREEK WATER DISTRICT Coquille	Coquille	Surface Water	2	285	Yes
124	HAZEL DELL ORCHARD The Dalles	The Dalles	Groundwater	2	260	Yes
125	LEXINGTON, TOWN OF Lexington	Lexington	Groundwater	2	255	Yes
126	JUNO NONPROFIT WATER IMPROVEMENT DISTR Tillamook	Tillamook	Groundwater	2	255	Yes
127	STARLITE MOBILE VILLAGE Eugene	Eugene	Groundwater	2	250	Yes
128	PETES MOUNTAIN WATER CO Molalla	Molalla	Groundwater	2	250	Yes
129	TYGH VALLEY WATER DISTRICT Tygh Valley	Tygh Valley	Groundwater	2	218	Yes
130	MT HOOD RV VILLAGE Sandy	Sandy	Groundwater	2	200	Yes
131	HELIX, CITY OF Helix	Helix	Groundwater	2	190	Yes
132	TIMBER WATER ASSOCIATION Timber	Timber	Surface Water	2	180	Yes
133	OTTER ROCK WATER DISTRICT Newberg	Newberg	Groundwater	2	175	Yes
134	HILAND WC - SHADOW WOOD Newberg	Newberg	Groundwater	2	175	Yes
135	OCEANSIDE WD - CAPE MEARES Oceanside	Oceanside	Surface Water	2	170	Yes
136	ROYAL ESTATES Salem	Salem	Groundwater	2	160	Yes
137	PORTLAND WATER BUREAU Portland	Portland	Surface Water	1	666,200	Yes
138	SPRINGFIELD UTILITY BOARD Springfield	Springfield	Surface Water	1	62,100	Yes
139	LAKE OSWEGO MUNICIPAL WATER Lake Oswego	Lake Oswego	Surface Water	1	40,000	Yes
140	CLACKAMAS RIVER WATER - CLAIRMONT Clackamas	Clackamas	Surface Water	1	19,928	Yes
141	PENDLETON, CITY OF Pendleton	Pendleton	Surface Water	1	16,996	Yes
142	ST HELENS, CITY OF St Helens	St Helens	Surface Water	1	13,410	Yes
143	WEST SLOPE WATER DISTRICT Portland	Portland	Surface Water	1	11,000	Yes
144	ASTORIA, CITY OF Astoria	Astoria	Surface Water	1	10,181	Yes
145	UMPQUA BASIN WATER ASSOC Roseburg	Roseburg	Surface Water	1	9,499	Yes
146	CITY OF STAYTON Stayton	Stayton	Surface Water	1	8,400	Yes
147	KERNVILLE-GLENEDEN-LINC BCH WD Gleneden Beach	Gleneden Beach	Surface Water	1	5,609	Yes
148	HUBBARD, CITY OF Hubbard	Hubbard	Groundwater	1	3,478	Yes
149	DAYTON, CITY OF Dayton	Dayton	Groundwater	1	2,535	Yes
150	BORING WATER DISTRICT NO 24 Boring	Boring	Groundwater	1	2,500	Yes
151	LA WATER CO-OP Gaston	Gaston	Surface Water	1	2,500	Yes
152	GRAND RONDE COMMUNITY WTR ASSN Grand Ronde	Grand Ronde	Groundwater	1	2,500	Yes
153	LAKEVIEW, CITY OF Lakeview	Lakeview	Groundwater	1	2,476	Yes
154	WARREN WATER ASSOCIATION St Helens	St Helens	Groundwater	1	2,050	Yes
155	GEARHART WATER DEPARTMENT Gearhart	Gearhart	Surface Water	1	1,780	Yes
156	CTUIR PWD MISSION Pendleton	Pendleton	Groundwater	1	1,310	Yes
157	YAMHILL, CITY OF Yamhill	Yamhill	Surface Water	1	1,199	Yes
158	FALLS CITY, CITY OF Falls City	Falls City	Surface Water	1	1,051	Yes
159	YACHATS, CITY OF Yachats	Yachats	Surface Water	1	1,006	Yes
160	SOUTHWOOD PARK WATER DISTRICT Newberg	Newberg	Groundwater	1	900	Yes
161	MALIN MUNICIPAL WATER Malin	Malin	Groundwater	1	815	Yes
162	TIMBERLINE RIM WATER CO INC Molalla	Molalla	Groundwater	1	800	Yes
163	WASHINGTON COUNTY RAILROAD Portland	Portland	Groundwater	1	795	Yes
164	DUFUR, CITY OF Dufur	Dufur	Groundwater	1	610	Yes
165	FALCON HEIGHTS Klamath Falls	Klamath Falls	Groundwater	1	559	Yes
166	COVE, CITY OF Cove	Cove	Groundwater	1	550	Yes
167	INDIAN MEADOW WATER COMPANY Sisters	Sisters	Groundwater	1	500	Yes
168	KILCHIS WATER DISTRICT Tillamook	Tillamook	Groundwater	1	500	Yes
169	MISSOULA KOA & EL MAR TLR VILLAGE Bend	Bend	Groundwater	1	499	Yes
170	WASCO, CITY OF Wasco	Wasco	Groundwater	1	460	Yes
171	KNOLL TERRACE PARK Corvallis	Corvallis	Groundwater	1	452	Yes
172	CIMMARRON CITY WATER SYSTEM Bend	Bend	Groundwater	1	450	Yes
173	SHELLEY ROAD-CREST ACRES WD Coquille	Coquille	Surface Water	1	430	Yes
174	OREGON SHORES BEACH CLUB INC Chiloquin	Chiloquin	Groundwater	1	352	Yes
175	JOHN DAY WATER DISTRICT Astoria	Astoria	Surface Water	1	350	Yes
176	FISHHAWK LAKE RESERVE AND COMMUNITY Birkenfeld	Birkenfeld	Surface Water	1	350	Yes
177	BLY WATER DISTRICT Bly	Bly	Groundwater	1	310	Yes
178	CAROLINA WATER SYSTEM Salem	Salem	Groundwater	1	300	Yes
179	AVION WC - WILD RIVER Bend	Bend	Groundwater	1	276	Yes
180	DEERHORN COMMUNITY WTR ASSN Springfield	Springfield	Groundwater	1	275	Yes
181	EUGENE MOBILE VILLAGE Eugene	Eugene	Groundwater	1	260	Yes
182	UKIAH, CITY OF Ukiah	Ukiah	Groundwater	1	235	Yes
183	DIAMOND HILL RV PARK Harrisburg	Harrisburg	Groundwater	1	203	Yes
184	SOUTH COAST WATER COMPANY Newberg	Newberg	Surface Water	1	200	Yes
185	EXCALIBUR VILLAGE Lake Oswego	Lake Oswego	Groundwater	1	180	Yes
186	COUNTRY GARDEN ESTATES MHP Walterville	Walterville	Groundwater	1	175	Yes
187	ARROWOOD COMMUNITY WATER CO Bend	Bend	Groundwater	1	170	Yes
188	BEVERLY BEACH WATER DISTRICT Newberg	Newberg	Surface Water	1	152	Yes

Systems with No Violations (312)

312 water systems in Oregon have zero recorded violations. Showing the 50 largest by population served.

TUALATIN VALLEY WATER DISTRICT (224,600) SALEM PUBLIC WORKS (199,820) EUGENE WATER & ELECTRIC BOARD (176,000) MEDFORD WATER COMMISSION (106,068) HILLSBORO, CITY OF (92,632) BEAVERTON, CITY OF (88,045) GRESHAM, CITY OF (73,932) ROCKWOOD PUD (65,443) TIGARD, CITY OF (62,500) CORVALLIS, CITY OF (61,468) ALBANY, CITY OF (57,997) SUNRISE WATER AUTHORITY (50,003) KLAMATH FALLS WATER DEPT (40,475) KEIZER, CITY OF (38,585) REDMOND WATER DEPARTMENT (37,566) GRANTS PASS, CITY OF (37,138) AVION WC - GREATER AVION (35,332) MCMINNVILLE WATER & LIGHT (34,515) COOS BAY NORTH BEND WTR BRD (34,500) OREGON CITY (33,940) CLACKAMAS RIVER WATER (29,918) WOODBURN, CITY OF (29,455) ROSEBURG, CITY OF (28,800) TUALATIN, CITY OF (28,106) WEST LINN, CITY OF (28,000) FOREST GROVE, CITY OF (26,838) WILSONVILLE, CITY OF (25,915) NEWBERG, CITY OF (25,138) ASHLAND WATER DEPARTMENT (20,946) MILWAUKIE, CITY OF (20,946) LINCOLN CITY, CITY OF (20,830) HERMISTON, CITY OF (20,000) SHERWOOD, CITY OF (19,885) CENTRAL POINT, CITY OF (19,785) LEBANON, CITY OF (18,945) CANBY UTILITY (18,754) TROUTDALE, CITY OF (16,185) CORNELIUS, CITY OF (14,490) ONTARIO, CITY OF (14,465) SUBURBAN EAST SALEM WD (13,900) LA GRANDE, CITY OF (13,460) THE DALLES, CITY OF (13,010) DESCHUTES VALLEY WATER DIST (11,700) PRINEVILLE, CITY OF (11,000) COTTAGE GROVE, CITY OF (10,879) NEWPORT, CITY OF (10,439) BAKER CITY (10,349) SWEET HOME, CITY OF (10,322) INDEPENDENCE WATER SYSTEM (10,300) MOLALLA, CITY OF (10,298) +262 more

All Water Systems in Oregon (943)

Page 8 of 19, ordered by population served.

System	Population Served	Violations
KELSO WATER ASSN	300	0
LAKE CREEK RANCH MHC	300	0
FOLEY LAKES MOBILE HOME PARK	300	0
COVE ORCHARD WATER ASSOCIATION	300	0
ROCK CREEK WATER DISTRICT	300	4
HILAND WC - LOMBARD	300	8
MANNA HOUSE CHURCH	300	2
SMGV/WIDGI CREEK	300	4
CAROLINA WATER SYSTEM	300	1
ALDER CREEK BARLOW WATER DIST	300	9
WEST HILLS WATER COMPANY	299	0
USFS WOLF CREEK JOB CORPS	291	0
CHARLES TRACTS WATER COMPANY	290	0
KENO WATER CO INC	290	0
LAKEWOOD HOMEOWNERS	289	0
METOLIUS MEADOWS PROP OWNERS	285	0
RINK CREEK WATER DISTRICT	285	2
AVION WC - WILD RIVER	276	1
OREGON SHORES RECREATION CLUB	275	0
FERN RIDGE SHORES	275	0
SUNSTONE - BEAR CREEK	275	3
DEERHORN COMMUNITY WTR ASSN	275	1
RUFUS PUBLIC WORKS	270	0
WESTFIR, CITY OF	268	0
CANBY REGENCY	265	5
EUGENE MOBILE VILLAGE	260	1
HAZEL DELL ORCHARD	260	2
LONE OAK ESTATES	258	0
LAMONTAI IMPROVEMENT WTR DIST	255	0
LEXINGTON, TOWN OF	255	2
JUNO NONPROFIT WATER IMPROVEMENT DISTR	255	2
EASTMONT WATER COMPANY	250	0
WESTVIEW MOBILE ESTATES	250	0
FAMILY REDWOOD PARK COOPERATIVE	250	0
WILLOW ESTATES MOBILE HOME PK	250	0
SOUTH HILLS WATER SYSTEM	250	0
IMBLER, CITY OF	250	0
FERNRIDGE MOBILE ESTATES	250	0
ROUND LAKE WATER UTILITIES	250	0
SKYLINE VIEW DIST IMPROVEMENT	250	0
OREGON WATER UTILITIES - SOUTHVIEW	250	0
SKYLANDS WATER COMPANY	250	0
NORTHWEST NEWBERG WATER ASSN	250	0
PORT OF TILLAMOOK BAY	250	0
STARLITE MOBILE VILLAGE	250	2
HEBO JOINT WATER & SANITARY AUTH	250	4
PETES MOUNTAIN WATER CO	250	2
PAISLEY, CITY OF	245	11
HIGHLINE OAKS WATER UTILITY	242	8
HIDDEN VALLEY MOBILE HOME ESTATES	240	0

← Previous Page 8 of 19 Next →

Frequently Asked Questions

How many water systems are in Oregon?

Oregon has 943 community water systems tracked by the EPA, serving a combined population of 3,755,319 people.

How many water systems in Oregon have health violations?

396 water systems in Oregon have health-based violations, which include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. These represent 42% of all systems in the state.

How many health-based violation records are in this extract for Oregon?

PlainEnviro's health-based EPA SDWIS extract contains 2,683 records joined to 943 active community water systems in Oregon. Monitoring and reporting records are not included.

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About This Data

Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Only community water systems (CWS) are included.

Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services

Read our methodology - how this data is sourced, computed, and verified.

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