County · Oregon
Clatsop County, Oregon: drinking water records
This overview covers 7 ZIP codes and 21 community water systems in Clatsop County. It also stands in for 0 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Astoria, City of OR4100055 | 10,181 | 120 | 0 | 1 | 1.6 ppb |
| Warrenton, City of OR4100932 | 9,100 | 120 | 0 | 0 | 1.2 ppb |
| Seaside Water Department OR4100799 | 7,482 | 120 | 0 | 0 | 0.7 ppb |
| Youngs River Lewis & Clark WD OR4100062 | 2,580 | 0 | 0 | 5 | 0 ppb |
| John Day Water District OR4100060 | 350 | 0 | 0 | 1 | 0 ppb |
| Falcon Cove Beach WD OR4100045 | 215 | 0 | 0 | 1 | 2.6 ppb |
| Sunset Lake RV Park OR4100933 | 170 | 0 | 0 | 3 | 0 ppb |
| Elderberry Nehalem Ws OR4100804 | 160 | 0 | 0 | 2 | 0 ppb |
| Maple Elsie Water Service OR4100805 | 100 | 0 | 0 | 11 | 0 ppb |
| Knappa Water Association OR4100061 | 1,800 | 0 | 0 | 0 | 0 ppb |
| Gearhart Water Department OR4100318 | 1,780 | 0 | 0 | 0 | 0 ppb |
| Cannon Beach, City of OR4100164 | 1,710 | 0 | 0 | 0 | 0 ppb |
| Wickiup Water District OR4100063 | 1,630 | 0 | 0 | 0 | 4 ppb |
| Olney-Walluski Water Assn OR4100057 | 575 | 0 | 0 | 0 | 1 ppb |
| Westport Water Association OR4100950 | 550 | 0 | 0 | 0 | 3.2 ppb |
| Burnside Water Association OR4100054 | 350 | 0 | 0 | 0 | 3 ppb |
| Willow Dale Water District OR4100058 | 310 | 0 | 0 | 0 | 0 ppb |
| Fernhill Community Wtr System OR4100059 | 300 | 0 | 0 | 0 | 0 ppb |
| Arch Cape Water District OR4100802 | 200 | 0 | 0 | 0 | 1.9 ppb |
| Wauna Water District OR4100951 | 188 | 0 | 0 | 0 | 1 ppb |
| Westport Heights OR4100195 | 90 | 0 | 0 | 0 | 2.9 ppb |
ZIP reports in Clatsop County
No ZIP report in this county is published yet.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.