State drinking water records
Oregon drinking water systems
946 community water systems serve Oregon and are listed below under 36 counties and on the pages of 364 cities and towns. Their own population figures add up to 3,754,183 people, a sum that counts people twice where one system sells water to another.
322 of them (34%) had at least one health-based violation in the last 10 years. 254 systems still have one unresolved.
695 rely mainly on groundwater and 251 on surface water, counting water bought from other systems.
914 systems filed a lead service line inventory listing 0 lead lines, 54 galvanized lines that must be replaced and 30,899 lines of unknown material.
202 systems are placed by the county their records name: EPA has no service area map for 198 of them, and 4 have one that does not line up with their own records.
- Community water systems
- 946
- People served, sum of each system's own figure
- 3,754,183
- Systems with a health-based violation, last 10 years
- 322
- Systems with one unresolved
- 254
- Lead service lines in inventories
- 0
Counties
36 countiesEach county counts the systems whose service area map reaches it. Systems placed only by a mailing address are listed on the county pages but not counted here.
| County | Systems | People served | With a health-based violation, 10 years | With one unresolved |
|---|---|---|---|---|
| Baker County | 9 | 12,209 | 5 | 4 |
| Benton County | 13 | 126,843 | 4 | 5 |
| Clackamas County | 64 | 341,512 | 21 | 12 |
| Clatsop County | 18 | 38,821 | 6 | 4 |
| Columbia County | 27 | 36,850 | 17 | 13 |
| Coos County | 14 | 47,325 | 5 | 3 |
| Crook County | 12 | 14,158 | 3 | 3 |
| Curry County | 12 | 16,688 | 8 | 2 |
| Deschutes County | 46 | 180,037 | 5 | 6 |
| Douglas County | 27 | 83,500 | 12 | 5 |
| Gilliam County | 2 | 1,370 | 0 | 0 |
| Grant County | 8 | 4,277 | 2 | 1 |
| Harney County | 3 | 4,530 | 1 | 1 |
| Hood River County | 5 | 22,815 | 1 | 1 |
| Jackson County | 54 | 180,219 | 19 | 12 |
| Jefferson County | 5 | 23,725 | 1 | 1 |
| Josephine County | 27 | 42,145 | 9 | 13 |
| Klamath County | 26 | 48,489 | 7 | 13 |
| Lake County | 3 | 3,671 | 2 | 1 |
| Lane County | 61 | 300,590 | 19 | 9 |
| Lincoln County | 27 | 58,325 | 9 | 5 |
| Linn County | 36 | 102,612 | 9 | 7 |
| Malheur County | 6 | 20,051 | 4 | 1 |
| Marion County | 62 | 336,847 | 17 | 20 |
| Morrow County | 7 | 9,872 | 2 | 2 |
| Multnomah County | 21 | 845,643 | 5 | 5 |
| Polk County | 13 | 54,230 | 6 | 2 |
| Sherman County | 4 | 1,264 | 1 | 0 |
| Tillamook County | 27 | 26,717 | 9 | 4 |
| Umatilla County | 32 | 63,427 | 10 | 7 |
| Union County | 10 | 20,152 | 0 | 2 |
| Wallowa County | 5 | 4,829 | 1 | 1 |
| Wasco County | 17 | 21,677 | 11 | 8 |
| Washington County | 21 | 581,864 | 5 | 4 |
| Wheeler County | 3 | 747 | 0 | 0 |
| Yamhill County | 21 | 84,608 | 12 | 4 |
Largest systems
| System | Main county | People served | Main source | Health-based violations, 10 years | Unresolved | Lead lines |
|---|---|---|---|---|---|---|
| Portland Water Bureau | Multnomah County | 666,200 | Surface water | 1 | 1 | 0 |
| Tualatin Valley Water District | Washington County | 224,600 | Purchased surface water | 0 | 0 | 0 |
| Salem Public Works | Marion County | 199,820 | Surface water | 0 | 0 | 0 |
| Eugene Water & Electric Board | Lane County | 176,000 | Surface water | 0 | 0 | 0 |
| Medford Water Commission | Jackson County | 106,068 | Surface water | 0 | 2 | 0 |
| City of Hillsboro | Washington County | 92,632 | Purchased surface water | 0 | 0 | 0 |
| City of Beaverton | Washington County | 88,045 | Purchased surface water | 0 | 0 | 0 |
| City of Bend | Deschutes County | 77,704 | Surface water | 1 | 0 | 0 |
| City of Gresham | Multnomah County | 73,932 | Purchased surface water | 0 | 0 | 0 |
| Rockwood PUD | Multnomah County | 65,443 | Purchased surface water | 0 | 0 | 0 |
| City of Tigard | Washington County | 62,500 | Purchased surface water | 0 | 0 | 0 |
| Springfield Utility Board | Lane County | 62,100 | Surface water | 0 | 0 | 0 |
| City of Corvallis | Benton County | 61,468 | Surface water | 0 | 0 | 0 |
| City of Albany | Linn County and 1 other county | 57,997 | Surface water | 0 | 0 | 0 |
| Sunrise Water Authority | Clackamas County | 50,003 | Purchased surface water | 0 | 0 | 0 |
Systems with unresolved health-based violations
254 systemsThe 100 with the most unresolved violations are listed. The county pages list the other 154.
| System | Main county | People served | Main source | Health-based violations, 10 years | Unresolved | Lead lines |
|---|---|---|---|---|---|---|
| Simnasho Schoolie | Wasco County | 350 | Groundwater | 12 | 25 | 0 |
| Warm Springs Water Treatment Plant | Jefferson County | 3,800 | Surface water | 38 | 21 | No inventory |
| Golf MHP | Malheur County | 60 | Groundwater | 19 | 13 | 0 |
| Sidwalter | Wasco County | 130 | Groundwater | 8 | 11 | 0 |
| Burns Paiute | Harney County | 155 | Groundwater | 5 | 10 | No inventory |
| Albany Trailer and RV Park, LLC | Linn County | 130 | Groundwater | 3 | 10 | 0 |
| Porter Creek Mobile Home Park | Douglas County | 35 | Groundwater | 1 | 9 | No inventory |
| Deer Island Heights WS | Columbia County | 60 | Groundwater | 3 | 8 | 0 |
| River Village MHP | Malheur County | 40 | Groundwater | 15 | 8 | 0 |
| Desire for Healing, Inc | Umatilla County | 33 | Groundwater | 2 | 8 | 0 |
| Rock Creek Water District | Polk County | 300 | Surface water | 2 | 7 | 0 |
| Laurelwood Water Users | Washington County | 200 | Groundwater | 4 | 7 | 0 |
| McLain Village Water Dept | Marion County | 100 | Groundwater | 1 | 7 | 0 |
| London Water Co-Op | Lane County | 63 | Surface water | 61 | 7 | 0 |
| Bigfoot Acres | Jackson County | 60 | Groundwater | 3 | 7 | No inventory |
| Sportsmans Paradise Motel/TC | Klamath County | 52 | Groundwater | 0 | 7 | 0 |
| Stewarts Addition | Umatilla County | 50 | Groundwater | 0 | 7 | 0 |
| Chiloquin Municipal Water Dept | Klamath County | 730 | Groundwater | 0 | 6 | 0 |
| City of Dufur | Wasco County | 610 | Groundwater | 1 | 6 | 0 |
| Wauna Water District | Clatsop County | 188 | Groundwater | 0 | 6 | 0 |
| Grants Pass Mobile Home Park LLC | Jackson County | 140 | Groundwater | 1 | 6 | 0 |
| Tooley Water District | Wasco County | 97 | Groundwater | 9 | 6 | 0 |
| Aldridge Ditch Co WS | Hood River County | 88 | Purchased groundwater | 1 | 6 | 0 |
| Clovercrest Community Water System | Josephine County | 65 | Groundwater | 2 | 6 | 0 |
| Shadow Hills Park Water Co-Op | Lane County | 45 | Groundwater | 1 | 6 | 0 |
| Weiss Estates Water System | Coos County | 36 | Surface water | 73 | 6 | 0 |
| Tillicum Park LLC | Lane County | 34 | Groundwater | 2 | 6 | 0 |
| Dufur, South Basin | Wasco County | 33 | Groundwater | 1 | 6 | 0 |
| Rogue Riviera Estates | Jackson County | 33 | Groundwater | 1 | 6 | 0 |
| Manzanita Hills Subdivision | Jackson County | 30 | Groundwater | 30 | 6 | 0 |
| City of Lakeview | Lake County | 2,476 | Groundwater | 1 | 5 | No inventory |
| High Desert Estates | Crook County | 380 | Groundwater | 1 | 5 | 0 |
| Deer Island Waterworks | Columbia County | 90 | Groundwater | 3 | 5 | 0 |
| Paradise Moorage | Columbia County | 90 | Groundwater | 1 | 5 | 0 |
| City of Unity | Baker County | 71 | Groundwater | 2 | 5 | 0 |
| West Laurel Acres Water Co | Washington County | 65 | Groundwater | 1 | 5 | No inventory |
| Lakeshore Terrace | Marion County | 60 | Groundwater | 0 | 5 | 0 |
| Caveman Mobile Home Park | Josephine County | 45 | Groundwater | 2 | 5 | No inventory |
| Hogg Heaven MHP | Columbia County | 40 | Groundwater | 1 | 5 | 0 |
| Swedetown Water Assoc | Columbia County | 40 | Groundwater | 1 | 5 | 0 |
| Thurston Oaks MHP | Lane County | 38 | Groundwater | 0 | 5 | 0 |
| Island City | Union County | 1,166 | Groundwater | 0 | 4 | 0 |
| Westport Water Association | Clatsop County | 550 | Purchased groundwater | 0 | 4 | 0 |
| Tierra Linda Estates | Umatilla County | 450 | Groundwater | 0 | 4 | 0 |
| John Day Water District | Clatsop County | 350 | Purchased surface water | 1 | 4 | No inventory |
| Country Estates Mobile Park | Josephine County | 175 | Groundwater | 1 | 4 | 0 |
| Duplex Village Water System | Marion County | 165 | Groundwater | 0 | 4 | 0 |
| Fir View Water Company | Benton County | 150 | Groundwater | 0 | 4 | 0 |
| Salem Mobile Estates/Shady Acres | Marion County | 150 | Groundwater | 0 | 4 | 0 |
| Fischers Place MHP | Malheur County | 130 | Groundwater | 2 | 4 | 0 |
| Villadom Mobile Home Park | Umatilla County | 115 | Groundwater | 3 | 4 | 0 |
| Wisemans Mobile Court | Klamath County | 114 | Groundwater | 1 | 4 | No inventory |
| Lakeside Mobile Home & RV Park | Klamath County | 110 | Groundwater | 1 | 4 | No inventory |
| Sauvie Island Moorage | Multnomah County | 96 | Groundwater | 1 | 4 | No inventory |
| Wolsborn Farms Water District | Washington County | 90 | Groundwater | 0 | 4 | 0 |
| Tamarack Mobile Home Park | Columbia County | 80 | Groundwater | 1 | 4 | 0 |
| Lawson Acres Water Association | Douglas County | 75 | Purchased surface water | 10 | 4 | 0 |
| Salmon River RV Park | Lincoln County | 69 | Groundwater | 2 | 4 | 0 |
| North Bayside Estates-North | Coos County | 65 | Groundwater | 1 | 4 | 0 |
| Vida-Lea Community Cooperative | Lane County | 45 | Groundwater | 0 | 4 | 0 |
| Dark Hollow Water Association | Jackson County | 45 | Groundwater | 2 | 4 | 0 |
| Duplex Village East | Marion County | 41 | Groundwater | 0 | 4 | 0 |
| Belle Passi Estates | Marion County | 30 | Groundwater | 0 | 4 | 0 |
| Watsonville Water System | Coos County | 27 | Surface water | 1 | 4 | 0 |
| City of Eagle Point | Jackson County | 9,554 | Purchased surface water | 0 | 3 | 0 |
| City of Oakridge | Lane County | 3,310 | Groundwater | 0 | 3 | 0 |
| Timberline Rim Water Co Inc | Clackamas County | 800 | Groundwater | 1 | 3 | 0 |
| City of Huntington | Baker County | 510 | Groundwater | 0 | 3 | 0 |
| Shelley Road-Crest Acres WD | Coos County | 430 | Purchased surface water | 1 | 3 | No inventory |
| Rogue Lea Estates-North/South | Josephine County | 350 | Groundwater | 0 | 3 | 0 |
| Bly Water District | Klamath County | 310 | Groundwater | 1 | 3 | 0 |
| Manna House Church | Multnomah County | 300 | Groundwater | 1 | 3 | 0 |
| Green Acres MHP - Umatilla Co | Umatilla County | 200 | Groundwater | 0 | 3 | 0 |
| Lower Siletz Water System | Lincoln County | 165 | Purchased surface water | 0 | 3 | 0 |
| View Point Trailer Court | Wasco County | 160 | Groundwater | 2 | 3 | 0 |
| Santiam Village | Linn County | 150 | Groundwater | 0 | 3 | 0 |
| Bridge Water District | Coos County | 150 | Groundwater under direct influence | 7 | 3 | 0 |
| Sunset Water System Inc | Marion County | 140 | Groundwater | 0 | 3 | 0 |
| Fir Grove Mobile Court | Linn County | 114 | Groundwater | 0 | 3 | 0 |
| Currinsville Mobile Home Park | Clackamas County | 90 | Groundwater | 1 | 3 | 0 |
| Country Villa Mobile Estates | Columbia County | 90 | Groundwater | 0 | 3 | 0 |
| Garden Valley Water Association | Coos County | 84 | Surface water | 18 | 3 | 0 |
| Gold Hill Mobile Home Park | Jackson County | 76 | Groundwater | 0 | 3 | 0 |
| McCuddys Landing | Columbia County | 70 | Groundwater | 0 | 3 | 0 |
| Hunt Water District | Tillamook County | 60 | Purchased surface water | 0 | 3 | 0 |
| Lazy Acres Mobile Home Park | Marion County | 59 | Groundwater | 5 | 3 | 0 |
| Ashland Valley Inn | Jackson County | 59 | Groundwater | 1 | 3 | 0 |
| Valley Vista Water Improv Dist | Jackson County | 48 | Groundwater | 0 | 3 | 0 |
| J & M Mobile Home Park | Columbia County | 45 | Groundwater | 3 | 3 | 0 |
| Hideaway Hills Water Company | Clackamas County | 45 | Purchased surface water | 1 | 3 | 0 |
| Medford Water Commission | Jackson County | 106,068 | Surface water | 0 | 2 | 0 |
| City of Woodburn | Marion County | 29,455 | Groundwater | 0 | 2 | 0 |
| Umpqua Basin Water Assoc | Douglas County | 9,499 | Surface water | 1 | 2 | 0 |
| City of Harrisburg | Linn County | 3,684 | Groundwater | 1 | 2 | 0 |
| City of Dayton | Yamhill County | 2,535 | Groundwater | 1 | 2 | 0 |
| City of Irrigon | Morrow County | 2,133 | Groundwater | 0 | 2 | 0 |
| Water Wonderland Improv Dist 2 | Deschutes County | 1,800 | Groundwater | 0 | 2 | 0 |
| City of Yoncalla | Douglas County | 1,050 | Surface water | 1 | 2 | 0 |
| Neahkahnie Water District | Tillamook County | 600 | Groundwater | 1 | 2 | 0 |
| Water Wonderland Improv Dist 1 | Deschutes County | 550 | Groundwater | 0 | 2 | 0 |
Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations