Water quality for ZIP code 95521
ZIP 95521 covers Arcata, Manila, Eureka, Samoa, and Blue Lake in Humboldt County, California, one of 35 ZIP codes in the county. 90 active public water systems serve the county; 40 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Humboldt County
43 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Jacoby Creek Cwd |
924 | 0 | 1.1 mi | |
| Humboldt Bay Mwd |
680 | 0 | 2.6 mi | |
| Blue Lake, City of Blue Lake |
1,172 | 1 | 4.4 mi | |
| Manila Community Services Dist. |
798 | 0 | 5.0 mi | |
| Green Diamond Resource Company Korbel |
250 | 0 | 5.8 mi | |
| Eureka, City of Eureka |
27,078 | 0 | 6.1 mi | |
| Fieldbrook Glendale C.s.d. |
1,845 | 1 | 6.8 mi | |
| McKinleyville C.s.d. |
16,900 | 0 | 6.9 mi | |
| Humboldt C.s.d. |
19,775 | 2 | 8.3 mi | |
| Moonstone Heights Mwa |
33 | 1 | 12.3 mi | |
| Westhaven C.s.d. |
490 | 1 | 12.6 mi | |
| Trinidad, City of Trinidad |
1,072 | 2 | 14.6 mi | |
| Trinidad Extended Stay RV |
130 | 1 | 15.3 mi | |
| Loleta C.s.d. |
828 | 0 | 16.8 mi | |
| Seawood Estates Mutual Water Company |
63 | 1 | 17.1 mi | |
| Palmer Creek Csd |
320 | 4 | 17.9 mi | |
| Fortuna, City of Fortuna |
12,133 | 0 | 19.0 mi | |
| Beach Creek Mobile Home Park |
67 | 1 | 19.2 mi | |
| Mill Creek M.w.c. |
85 | 2 | 20.0 mi | |
| Hydesville Co. W.d. |
1,389 | 3 | 21.0 mi | |
| Big Lagoon Csd |
112 | 0 | 21.0 mi | |
| Waddington W.w. |
75 | 3 | 21.2 mi | |
| Riverside Csd |
333 | 0 | 21.2 mi | |
| Big Lagoon Park Water Co. |
20 | 0 | 21.4 mi | |
| Del Oro Water Co-Ferndale |
1,662 | 0 | 21.4 mi |
Non-community systems in Humboldt County (46: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Humboldt County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The California records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.