PlainWater
Counties → California

Humboldt County, California

Water Systems
91
Population Served
134,283
Total Violations
2,001
680 health-based
PFAS Detected
1
of 7 tested

Violation Analysis

93.4%
Systems with Violations
22.0
Avg Violations per System
34.0%
Health-Based Violations

Water Source Types

GW
32 systems (35%)
SW
18 systems (20%)

PFAS Contamination

7
Systems Tested
1
PFAS Detected
14.3%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Humboldt California water systems by violation status, EPA SDWIS records.

No violations on record (4) One or more violations (46)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Eureka, City Of 27,078 2 Clean
Arcata, City Of 20,875 2 Clean
Humboldt C.s.d. 19,807 7 Clean
McKinleyville C.s.d. 16,900 8 Clean
Fortuna, City Of 12,133 5 Clean
Rio Dell, City Of 3,300 6 Clean
Garberville Sanitary District 2,041 4 -
Fieldbrook Glendale C.s.d. 1,845 3 -
Del Oro Water Co-Ferndale 1,662 0 -
Richardson Grove Sp-State Parks 1,509 5 -
Hydesville Co. W.D. 1,366 20 -
Willow Creek C.s.d. 1,298 7 -
Redway C.s.d. 1,207 7 -
Blue Lake, City Of 1,172 2 Clean
Trinidad, City Of 1,072 25 -
Caltrans-Trinidad Nb 1,000 5 -
Sue-Meg Sp-State Parks 1,000 5 -
Gold Bluffs Beach Cg-State Parks 998 2 -
Jacoby Creek Cwd 924 4 -
Scotia Csd 906 14 -
Loleta C.s.d. 828 5 -
Resort Improvement District #1 803 7 -
Richardson Grove Campground & RV Park 750 41 -
Manila Community Services Dist. 750 3 -
Humboldt Bay MWD 680 2 -
Orleans C.s.d. 636 41 -
Van Duzen - Humboldt Co. Parks 551 2 -
Prairie Creek Sp-State Parks 500 0 -
Miranda C.s.d. 492 9 -
Westhaven C.s.d. 490 23 -
Weott C.s.d. 448 70 -
Stone Lagoon-State Parks 402 5 -
Orick C.s.d. 396 15 -
Benbow-Del Oro W.C. 370 42 -
Burlington Cg-State Parks 368 2 -
Hidden Springs Cg-State Parks 350 0 -
Riverside Csd 333 20 -
Myers Flat M.w.s. Inc. 330 33 -
Palmer Creek Csd 320 14 -
A W Way - Humboldt Co. Parks 301 7 -
Phillipsville C.s.d. 300 69 -
Angelina 300 24 -
Big Lagoon - Humboldt Co. Parks 300 0 -
Dean Creek Resort 283 8 -
Cal Fire-Eel River Conservation Camp 280 33 -
Green Diamond Resource Company - Korbel 250 5 -
Larrupin Cafe 247 57 -
Sylvan Harbor Trailer Park 231 12 -
Emerald Forest 200 24 -
Chimney Tree 200 38 -

Other Counties in California

Los Angeles County
276 systems · 10,109,089 served · 3,972 violations
San Diego County
197 systems · 3,744,323 served · 4,832 violations
Orange County
46 systems · 3,201,893 served · 507 violations
Riverside County
201 systems · 2,839,125 served · 6,103 violations
San Bernardino County
318 systems · 2,830,626 served · 4,611 violations
Alameda County
27 systems · 2,249,634 served · 275 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Humboldt County? ▼
Humboldt County has 2,001 total drinking water violations across 91 water systems, of which 680 are health-based violations. 93.4% of systems have at least one violation.
How many people get water from Humboldt County systems? ▼
Water systems in Humboldt County serve approximately 134,283 people through 91 public water systems.
Has PFAS been detected in Humboldt County water? ▼
Of 7 water systems tested for PFAS in Humboldt County, 1 had PFAS detected (14.3% detection rate).
What types of water sources supply Humboldt County? ▼
Water systems in Humboldt County use GW (32 systems), SW (18 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 34.0% of Humboldt County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.