Water quality for ZIP code 95556
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
Other community water systems in Humboldt County
43 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Orleans C.s.d. |
636 | 4 | 2.7 mi | |
| Willow Creek C.s.d. |
1,720 | 1 | 23.7 mi | |
| Orick C.s.d. |
328 | 0 | 25.1 mi | |
| Big Lagoon Park Water Co. |
20 | 0 | 30.1 mi | |
| Big Lagoon Csd |
112 | 0 | 30.3 mi | |
| Beach Creek Mobile Home Park |
67 | 1 | 32.1 mi | |
| Seawood Estates Mutual Water Company |
63 | 1 | 32.9 mi | |
| Westhaven C.s.d. |
490 | 1 | 32.9 mi | |
| Moonstone Heights Mwa |
33 | 1 | 33.0 mi | |
| Trinidad Extended Stay RV |
130 | 1 | 33.2 mi | |
| Trinidad, City of Trinidad |
1,072 | 2 | 33.5 mi | |
| Fieldbrook Glendale C.s.d. |
1,845 | 1 | 33.7 mi | |
| McKinleyville C.s.d. |
16,900 | 0 | 35.8 mi | |
| Green Diamond Resource Company Korbel |
250 | 0 | 35.8 mi | |
| Blue Lake, City of Blue Lake |
1,172 | 1 | 36.1 mi | |
| Arcata, City of Arcata |
18,857 | 1 | 39.6 mi | |
| Jacoby Creek Cwd |
924 | 0 | 40.4 mi | |
| Humboldt Bay Mwd |
680 | 0 | 41.3 mi | |
| Manila Community Services Dist. |
798 | 0 | 43.3 mi | |
| Eureka, City of Eureka |
27,078 | 0 | 46.0 mi | |
| Humboldt C.s.d. |
19,775 | 2 | 48.3 mi | |
| Loleta C.s.d. |
828 | 0 | 56.7 mi | |
| Palmer Creek Csd |
320 | 4 | 57.2 mi | |
| Fortuna, City of Fortuna |
12,133 | 0 | 57.6 mi | |
| Mill Creek M.w.c. |
85 | 2 | 57.9 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.