Humboldt Water Quality Report
17 cities ranked · Average grade: B+ · California
Avg Score
81
Cities Ranked
17
Health Violations
17
PFAS Detected
1
81
County avg score
17
Cities ranked
88%
A or B grade
6%
D or F grade
17
Health violations
1
PFAS detected
Grade Distribution
How Humboldt cities scored
A
7
41%
Excellent
B
8
47%
Good
C
1
6%
Fair
D
1
6%
Poor
F
0
0%
Failing
Comparison
County vs California average
▲ 4.5 pts above state average
City Map
Water quality across Humboldt
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Humboldt
Best cities
County context
1
Superfund site in Humboldt
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Humboldt
Industrial polluters nearby
Facilities reporting the most surface-water releases in Humboldt, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
PG&E HUMBOLDT BAY POWER PLANT EUREKA, CA95503 | — | — |
CRYSTAL CREAMERY INC. DBA HUMBOLDT CREAMERY FORTUNA, CA95540 | — | — |
HUMBOLDT SAWMILL CO & COGENERATION PLANT SCOTIA, CA95565 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Humboldt
Superfund sites nearby
Federally tracked hazardous-waste sites within Humboldt on the EPA National Priorities List.
- COPPER BLUFF MINE
Source: EPA Superfund National Priorities List
Full Rankings
All 17 cities in Humboldt
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Blue Lake | A+ | 98.9 | 1K | 2 | Health | |
| 2 | Cutten | A+ | 96.8 | 20K | 5 | Health | |
| 3 | Rio Dell | A | 94.5 | 3K | 4 | Health | |
| 4 | Redway | A | 93 | 1K | 6 | Health | |
| 5 | Arcata | A | 91.1 | 23K | 6 | Health Unresolved | |
| 6 | Mckinleyville | A- | 89.6 | 19K | 6 | Health Unresolved | |
| 7 | Eureka | A- | 85.1 | 28K | 27 | Health Unresolved | |
| 8 | Whitethorn | B+ | 84.7 | 919 | 69 | Health Unresolved | |
| 9 | Hydesville | B+ | 81.9 | 1K | 12 | Health Unresolved | |
| 10 | Scotia | B+ | 80.5 | 906 | 9 | Health Unresolved | |
| 11 | Willow Creek | B | 76.9 | 1K | 5 | Health Unresolved | |
| 12 | Loleta | B- | 73.9 | 3K | 87 | Health Unresolved | |
| 13 | Phillipsville | B- | 73.8 | 748 | 98 | Health Unresolved | |
| 14 | Fortuna | B- | 72.3 | 13K | 29 | Health Unresolved | |
| 15 | Garberville | B- | 70.9 | 2K | 58 | Health Unresolved | |
| 16 | Orleans | C+ | 67.7 | 721 | 95 | Health Unresolved | |
| 17 | Trinidad | D | 45 | 2K | 500 | Health Unresolved |