County · California
Del Norte County, California: drinking water records
This overview covers 5 ZIP codes and 23 community water systems in Del Norte 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 |
|---|---|---|---|---|---|
| Katherine Resorts Water Company AZ0408018 | 58 | 60 | 0 | 3 | 1.7 ppb |
| City of Crescent City CA0810001 | 17,262 | 60 | 0 | 0 | 3.0 ppb |
| Arizona Village 090400300 | 3,211 | 0 | 0 | 4 | 1.1 ppb |
| Joshua Valley Utility Company AZ0408017 | 1,500 | 0 | 0 | 1 | 1 ppb |
| Klamath C.S.D. CA0800548 | 360 | 0 | 0 | 1 | 5.7 ppb |
| Redwood Park C.S.D. CA0800526 | 200 | 0 | 0 | 2 | 4.2 ppb |
| Hunter Valley CSD CA0800557 | 174 | 0 | 0 | 1 | 1.8 ppb |
| Las Palmas Mobile Home Park CA0800700 | 120 | 0 | 0 | 1 | 0 ppb |
| West Park Properties CA0800605 | 112 | 0 | 0 | 1 | 2.2 ppb |
| Butte Court Mobile Home Park CA0800603 | 65 | 0 | 0 | 1 | 0.6 ppb |
| Jed Smith Homeowners Assn. CA0800825 | 58 | 0 | 0 | 1 | 1.3 ppb |
| Avi Kwa Ame Farms North 090400304 | 40 | 0 | 0 | 1 | 1.7 ppb |
| Bertsch Ocean View CSD CA0810003 | 2,605 | 0 | 0 | 0 | 0 ppb |
| Smith River C.S.D. CA0810002 | 2,568 | 0 | 0 | 0 | 4.1 ppb |
| Gasquet C.S.D. CA0800555 | 657 | 0 | 0 | 0 | 0 ppb |
| Big Rock C.S.D. CA0800532 | 513 | 0 | 0 | 0 | 0 ppb |
| Yurok - Terwer Water System 090605143 | 300 | 0 | 0 | 0 | 11 ppb |
| Northcrest Mobile Home Park CA0800552 | 250 | 0 | 0 | 0 | 1.2 ppb |
| Howonquet Community(Smith River) 090605060 | 220 | 0 | 0 | 0 | 2.7 ppb |
| Hrc C.S.D. CA0800556 | 185 | 0 | 0 | 0 | 6 ppb |
| Pine Grove Mobile Home Park CA0800800 | 142 | 0 | 0 | 0 | 0 ppb |
| Rock Creek Mutual Water Co. CA0800529 | 60 | 0 | 0 | 1 | not reported |
| Hardyville on the River AZ0408342 | 42 | 0 | 0 | 0 | 1.1 ppb |
ZIP reports in Del Norte 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.