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