Water quality for ZIP code 95550
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 |
|---|---|---|---|---|
| Green Diamond Resource Company Korbel |
250 | 0 | 9.3 mi | |
| Blue Lake, City of Blue Lake |
1,172 | 1 | 11.1 mi | |
| Jacoby Creek Cwd |
924 | 0 | 12.7 mi | |
| Arcata, City of Arcata |
18,857 | 1 | 14.2 mi | |
| Fieldbrook Glendale C.s.d. |
1,845 | 1 | 15.4 mi | |
| Willow Creek C.s.d. |
1,720 | 1 | 16.4 mi | |
| Eureka, City of Eureka |
27,078 | 0 | 17.1 mi | |
| Humboldt C.s.d. |
19,775 | 2 | 17.1 mi | |
| McKinleyville C.s.d. |
16,900 | 0 | 18.1 mi | |
| Manila Community Services Dist. |
798 | 0 | 18.3 mi | |
| Mill Creek M.w.c. |
85 | 2 | 20.9 mi | |
| Hydesville Co. W.d. |
1,389 | 3 | 20.9 mi | |
| Fortuna, City of Fortuna |
12,133 | 0 | 21.3 mi | |
| Palmer Creek Csd |
320 | 4 | 21.8 mi | |
| Moonstone Heights Mwa |
33 | 1 | 22.6 mi | |
| Loleta C.s.d. |
828 | 0 | 22.8 mi | |
| Westhaven C.s.d. |
490 | 1 | 22.9 mi | |
| Waddington W.w. |
75 | 3 | 24.8 mi | |
| Rio Dell, City of Rio Dell |
3,300 | 0 | 24.8 mi | |
| Trinidad, City of Trinidad |
1,072 | 2 | 25.2 mi | |
| Scotia Csd |
681 | 4 | 25.5 mi | |
| Trinidad Extended Stay RV |
130 | 1 | 25.8 mi | |
| Del Oro Water Co-Ferndale |
1,662 | 0 | 26.5 mi | |
| Redcrest Water Works |
116 | 0 | 27.2 mi | |
| Riverside Csd |
333 | 0 | 27.3 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.