Systems reaching a study comparison level
8.0%9 of 113 active community water systems with complete monitoring
All 113 systems had complete monitoring. 9 reached at least one study comparison level; 104 did not. “Study comparison level” means the dated EPA technical cutoff used in this January 2026 research release. It does not determine household exposure, health risk, or current legal compliance.
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ZIP codes are used only to route visitors to public water systems that reported serving them. Confirm the actual provider using a water bill or utility record.
Compound summary
System counts in Oregon
Each count shows how many included water systems reached the named study level.
| Study comparison | Systems reaching level | Water systems included | Percent |
|---|---|---|---|
| PFOA: study level 4.05 ppt (April 2024 EPA level: 4 ppt) | 1 | 113 | 0.9% |
| PFOS: study level 4.05 ppt (April 2024 EPA level: 4 ppt) | 8 | 113 | 7.1% |
| PFHxS: study level 15 ppt (April 2024 EPA level: 10 ppt) | 0 | 113 | 0.0% |
| PFNA: study level 15 ppt (April 2024 EPA level: 10 ppt) | 0 | 113 | 0.0% |
| HFPO-DA: study level 15 ppt (April 2024 EPA level: 10 ppt) | 0 | 113 | 0.0% |
| Hazard Index: study level 1.5 with at least two detected components (April 2024 EPA level: 1) | 0 | 113 | 0.0% |
System directory
Community water systems with complete monitoring
Each PWSID appears once, preventing double counting across ZIP associations.
| Public water system | PWSID | Population served | Primary source | Sampling locations | Study comparison |
|---|---|---|---|---|---|
| ADAIR VILLAGE WATER SYSTEM | OR4100003 | 875 | Surface water | 1 | Below the study levels |
| ALBANY, CITY OF | OR4100012 | 57,997 | Surface water | 2 | Below the study levels |
| ASTORIA, CITY OF | OR4100055 | 10,181 | Surface water | 1 | Below the study levels |
| AUMSVILLE, CITY OF | OR4100065 | 4,125 | Ground water | 1 | Below the study levels |
| AVION WC - GREATER AVION | OR4100091 | 35,332 | Ground water | 4 | Below the study levels |
| BAKER CITY | OR4100073 | 10,349 | Surface water | 1 | Below the study levels |
| BANDON, CITY OF | OR4100074 | 3,000 | Surface water | 1 | Below the study levels |
| BEAVERTON, CITY OF | OR4100081 | 88,045 | Surface water purchased | 3 | Below the study levels |
| BEND WATER DEPARTMENT | OR4100100 | 77,704 | Surface water | 9 | Reached a study level |
| BOARDMAN, CITY OF | OR4100130 | 5,749 | Ground water | 2 | Below the study levels |
| BROOKINGS, CITY OF | OR4100149 | 7,120 | Ground water | 1 | Below the study levels |
| CANBY UTILITY | OR4100157 | 18,754 | Surface water | 1 | Below the study levels |
| CENTRAL POINT, CITY OF | OR4100178 | 19,785 | Surface water purchased | 1 | Below the study levels |
| CHENOWITH PUD | OR4100867 | 4,500 | Ground water | 4 | Below the study levels |
| CLACKAMAS RIVER WATER - CLACKAMAS | OR4100187 | 29,918 | Surface water | 1 | Below the study levels |
| CLACKAMAS RIVER WATER - CLAIRMONT | OR4100594 | 19,928 | Surface water purchased | 1 | Below the study levels |
| COOS BAY NORTH BEND WTR BRD | OR4100205 | 34,500 | Surface water | 1 | Below the study levels |
| COQUILLE, CITY OF | OR4100213 | 3,953 | Surface water | 1 | Below the study levels |
| CORNELIUS, CITY OF | OR4100218 | 14,490 | Surface water purchased | 2 | Below the study levels |
| CORVALLIS, CITY OF | OR4100225 | 61,468 | Surface water | 2 | Below the study levels |
| COTTAGE GROVE, CITY OF | OR4100236 | 10,879 | Surface water | 1 | Below the study levels |
| CRESWELL, CITY OF | OR4100246 | 5,585 | Surface water | 1 | Below the study levels |
| CROOKED RIVER RANCH WTR CO | OR4100862 | 4,000 | Ground water | 1 | Below the study levels |
| CRYSTAL SPRINGS WATER DISTRICT | OR4100386 | 5,973 | Ground water | 2 | Below the study levels |
| DALLAS, CITY OF | OR4100248 | 17,911 | Surface water | 1 | Below the study levels |
| DESCHUTES VALLEY WATER DIST | OR4100501 | 11,700 | Ground water | 1 | Below the study levels |
| DUNDEE, CITY OF | OR4100262 | 2,960 | Ground water | 5 | Reached a study level |
| EAGLE POINT, CITY OF | OR4100267 | 9,554 | Surface water purchased | 4 | Below the study levels |
| ESTACADA, CITY OF | OR4100279 | 5,750 | Surface water | 1 | Below the study levels |
| EUGENE WATER & ELECTRIC BOARD | OR4100287 | 176,000 | Surface water | 1 | Below the study levels |
| FALLS CITY OR, CITY OF | OR4100297 | 1,051 | Surface water | 1 | Below the study levels |
| FLORENCE, CITY OF | OR4100299 | 9,561 | Ground water | 1 | Below the study levels |
| FOREST GROVE, CITY OF | OR4100305 | 26,838 | Surface water | 2 | Below the study levels |
| GRANTS PASS, CITY OF | OR4100342 | 37,138 | Surface water | 1 | Below the study levels |
| GRESHAM, CITY OF | OR4100357 | 73,932 | Surface water purchased | 1 | Below the study levels |
| Green Area Water & Sanitary Authority | OR4100717 | 7,000 | Surface water | 1 | Below the study levels |
| HARRISBURG, CITY OF | OR4100366 | 3,684 | Ground water | 1 | Below the study levels |
| HECETA WATER PEOPLES UTILITY DISTRICT | OR4100301 | 4,921 | Surface water | 1 | Below the study levels |
| HERMISTON, CITY OF | OR4100372 | 20,000 | Surface water | 5 | Reached a study level |
| HILLSBORO, CITY OF | OR4101513 | 92,632 | Surface water purchased | 1 | Below the study levels |
| HOOD RIVER, CITY OF | OR4100385 | 8,577 | Ground water | 1 | Below the study levels |
| HUBBARD, CITY OF | OR4100389 | 3,478 | Ground water | 1 | Below the study levels |
| ICE FOUNTAIN WATER DISTRICT | OR4100387 | 6,000 | Ground water | 1 | Below the study levels |
| INDEPENDENCE WATER SYSTEM | OR4100399 | 10,300 | Ground water | 2 | Below the study levels |
| KEIZER, CITY OF | OR4100744 | 38,585 | Ground water | 15 | Below the study levels |
| KERNVILLE-GLENEDEN-LINC BCH WD | OR4100324 | 5,609 | Surface water | 1 | Below the study levels |
| KLAMATH FALLS WATER DEPT | OR4100443 | 40,475 | Ground water | 6 | Reached a study level |
| LA GRANDE, CITY OF | OR4100453 | 13,460 | Ground water | 5 | Below the study levels |
| LAFAYETTE, CITY OF | OR4100452 | 4,423 | Surface water purchased | 4 | Below the study levels |
| LAKE OSWEGO MUNICIPAL WATER | OR4100457 | 40,000 | Surface water purchased | 1 | Below the study levels |
| LAKEVIEW, CITY OF | OR4100464 | 2,476 | Ground water | 1 | Below the study levels |
| LEBANON, CITY OF | OR4100473 | 18,945 | Surface water | 1 | Below the study levels |
| LINCOLN CITY WATER DISTRICT | OR4100483 | 20,830 | Surface water | 1 | Below the study levels |
| MADRAS, CITY OF | OR4100500 | 3,940 | Ground water | 2 | Below the study levels |
| MARCOLA WATER DISTRICT | OR4100508 | 600 | Ground water | 4 | Reached a study level |
| MEDFORD WATER COMMISSION | OR4100513 | 106,068 | Surface water | 3 | Below the study levels |
| MILTON-FREEWATER, CITY OF | OR4100522 | 7,145 | Ground water | 3 | Reached a study level |
| MILWAUKIE, CITY OF | OR4100528 | 20,946 | Ground water | 3 | Reached a study level |
| MOLALLA, CITY OF | OR4100534 | 10,298 | Surface water | 1 | Below the study levels |
| MONMOUTH, CITY OF | OR4100537 | 11,651 | Groundwater under influence of surface water | 1 | Below the study levels |
| MOUNT ANGEL, CITY OF | OR4100544 | 3,650 | Ground water | 2 | Below the study levels |
| MYRTLE CREEK, CITY OF | OR4100550 | 3,501 | Surface water | 1 | Below the study levels |
| NEWBERG, CITY OF | OR4100557 | 25,138 | Ground water | 1 | Below the study levels |
| NEWPORT, CITY OF | OR4100566 | 10,439 | Surface water | 1 | Below the study levels |
| OAK LODGE WATER SERVICES | OR4101512 | 30,000 | Surface water purchased | 1 | Below the study levels |
| ONTARIO, CITY OF | OR4100587 | 14,465 | Surface water | 1 | Below the study levels |
| OREGON CITY, OR | OR4101511 | 33,940 | Surface water purchased | 1 | Below the study levels |
| PENDLETON, CITY OF | OR4100613 | 16,996 | Surface water | 3 | Below the study levels |
| PHILOMATH PUBLIC WORKS | OR4100624 | 4,670 | Surface water | 2 | Below the study levels |
| PHOENIX, CITY OF | OR4100625 | 5,900 | Surface water purchased | 1 | Below the study levels |
| PORTLAND WATER BUREAU | OR4100657 | 666,200 | Surface water | 2 | Below the study levels |
| PRINEVILLE, CITY OF | OR4100682 | 11,000 | Ground water | 5 | Below the study levels |
| RAINBOW WATER DISTRICT | OR4100839 | 6,300 | Groundwater under influence of surface water | 4 | Reached a study level |
| RALEIGH WATER DISTRICT | OR4100667 | 4,500 | Surface water purchased | 1 | Below the study levels |
| REDMOND WATER DEPARTMENT | OR4100693 | 37,566 | Ground water | 8 | Below the study levels |
| REEDSPORT, CITY OF | OR4100699 | 4,836 | Surface water | 1 | Below the study levels |
| ROATS WATER SYSTEM | OR4100113 | 6,469 | Ground water | 3 | Below the study levels |
| ROCKWOOD PUD | OR4100668 | 65,443 | Surface water purchased | 1 | Below the study levels |
| ROSEBURG, CITY OF | OR4100720 | 28,800 | Surface water | 1 | Below the study levels |
| SALEM PUBLIC WORKS | OR4100731 | 199,820 | Surface water | 2 | Below the study levels |
| SANDY, CITY OF | OR4100789 | 12,991 | Surface water | 3 | Below the study levels |
| SCAPPOOSE, CITY OF | OR4100792 | 8,710 | Surface water | 2 | Below the study levels |
| SEASIDE WATER DEPARTMENT | OR4100799 | 7,482 | Surface water | 1 | Below the study levels |
| SHERIDAN OR, CITY OF | OR4100811 | 6,494 | Surface water | 2 | Below the study levels |
| SHERWOOD, CITY OF | OR4100816 | 19,885 | Surface water purchased | 1 | Below the study levels |
| SILVERTON, CITY OF | OR4100823 | 10,484 | Surface water | 1 | Below the study levels |
| SPRINGFIELD UTILITY BOARD | OR4100837 | 62,100 | Surface water | 5 | Below the study levels |
| ST HELENS, CITY OF | OR4100724 | 13,410 | Groundwater under influence of surface water | 1 | Below the study levels |
| SUBURBAN EAST SALEM WD | OR4100768 | 13,900 | Surface water purchased | 2 | Below the study levels |
| SUNRISE WATER AUTHORITY | OR4100635 | 50,003 | Surface water purchased | 6 | Reached a study level |
| SUNRIVER WATER LLC/SUNRIVER UTILITIES | OR4100846 | 4,300 | Ground water | 3 | Below the study levels |
| SUTHERLIN, CITY OF | OR4100847 | 8,060 | Surface water | 2 | Below the study levels |
| SWEET HOME, CITY OF | OR4100851 | 10,322 | Surface water | 1 | Below the study levels |
| TALENT, CITY OF | OR4100857 | 6,293 | Surface water purchased | 1 | Below the study levels |
| THE DALLES, CITY OF | OR4100869 | 13,010 | Surface water | 4 | Below the study levels |
| TIGARD, CITY OF | OR4100878 | 62,500 | Surface water purchased | 4 | Below the study levels |
| TILLAMOOK WATER DEPT, CITY OF | OR4100893 | 5,265 | Surface water | 3 | Below the study levels |
| TOLEDO WATER UTILITIES | OR4100899 | 3,645 | Surface water | 1 | Below the study levels |
| TRI-CITY JW&SA | OR4100549 | 3,500 | Surface water | 1 | Below the study levels |
| TROUTDALE, CITY OF | OR4100901 | 16,185 | Ground water | 4 | Below the study levels |
| TUALATIN VALLEY WATER DISTRICT | OR4100665 | 224,600 | Surface water purchased | 3 | Below the study levels |
| TUALATIN, CITY OF | OR4100906 | 28,106 | Surface water purchased | 2 | Below the study levels |
| UMATILLA, CITY OF | OR4100914 | 8,256 | Ground water | 3 | Below the study levels |
| UMPQUA BASIN WATER ASSOC | OR4100719 | 9,499 | Surface water | 1 | Below the study levels |
| VENETA, CITY OF | OR4100920 | 5,200 | Surface water purchased | 1 | Below the study levels |
| WARM SPRINGS WATER TREATMENT PLANT | 104101247 | 3,800 | Surface water | 1 | Below the study levels |
| WARRENTON, CITY OF | OR4100932 | 9,100 | Surface water | 1 | Below the study levels |
| WEST LINN, CITY OF | OR4100944 | 28,000 | Surface water purchased | 1 | Below the study levels |
| WEST SLOPE WATER DISTRICT | OR4100660 | 11,000 | Surface water purchased | 1 | Below the study levels |
| WILSONVILLE, CITY OF | OR4100954 | 25,915 | Surface water | 1 | Below the study levels |
| WINSTON-DILLARD WATER DISTRICT | OR4100957 | 8,300 | Surface water | 2 | Below the study levels |
| WOOD VILLAGE, CITY OF | OR4100904 | 4,388 | Ground water | 3 | Below the study levels |
| WOODBURN, CITY OF | OR4100959 | 29,455 | Ground water | 3 | Below the study levels |
How the count works
What is included
Each active community water system with complete monitoring is counted once, even if it is linked with several ZIP codes. Private wells are excluded, and UCMR 5 did not comprehensively monitor every small system. This page does not apply Oregon's state-specific standards or determine compliance. Use the official state or territory drinking-water program for current regulatory information.