🔍Straight from EPA

🧪Real Lab Results

📅Updated Quarterly

🏠Local Expertise

Results for Humboldt County, CA

250 water providers on file for this county, sorted by population served.

Quick answer: Humboldt County has 250 water providers profiled, sorted by population served.

Lead Summary
Copper Summary
Odor
Turbidity
Chloride
Nitrate
Sulfate
TDS
Barium
Magnesium
Sodium
Calcium
Hardness, Total (ASCACO3)
pH
Alkalinity, Total
Alkalinity, Bicarbonate
Copper, Free
Lead
Chloroform
Bromodichloromethane
Dibromochloromethane
TTHM
Dichloroaceticacid
Trichloroaceticacid
Totalhaloaceticacids (HAA5)
Carbon, Total
Fluoride
Zinc
Manganese
Gross Alpha Particle Activity
Chromium, Hex
Iron
Bromoform
Dibromoaceticacid
Conductivity (at 25°C)
Alkalinity, Carbonate
Chromium
Color
Aluminum
Arsenic
Monobromoaceticacid
Lithium
Radium-228
Monochloroaceticacid

Violations on file

Coliform (TCR)

Older/archived health-based violation

Found at 1 of 250 providers

Surface Water Treatment Rule

Currently open health violation

Found at 6 of 250 providers

Lead And Copper Rule Revisions

Currently open health violation

Found at 18 of 250 providers

Interim Enhanced Surface Water Treatment Rule

Older/archived health-based violation

Found at 1 of 250 providers

Long Term 2 Enhanced Surface Water Treatment Rule

Currently open health violation

Found at 2 of 250 providers

Revised Total Coliform Rule

Currently open health violation

Found at 1 of 250 providers

Contaminants found

Metals

Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper

Lead Summary

Detected: 0.029 mg/L (ppm)

Found at 64 providers

Copper Summary

Detected: 70.5 mg/L (ppm)

Found at 16 providers

Barium

Detected: 310 UG/L (ppb)

Found at 12 providers

Copper, Free

Detected: 730 UG/L (ppb)

Found at 20 providers

Lead

Detected: 19 UG/L (ppb)

Found at 17 providers

A metal that can leach from old pipes, solder, and fixtures. Current medical guidance holds there is no truly safe level of lead exposure, especially for children and pregnant women.

Zinc

Detected: 71 UG/L (ppb)

Found at 7 providers

Manganese

Detected: 790 UG/L (ppb)

Found at 7 providers

Mainly a taste/staining concern at typical levels; long-term neurological research at high chronic exposure is ongoing.

Chromium, Hex

Detected: 5.8 UG/L (ppb)

Found at 22 providers

Iron

Detected: 7100 UG/L (ppb)

Found at 7 providers

Mostly an aesthetic issue (metallic taste, staining) rather than a health concern at typical levels.

Chromium

Detected: 6.7 UG/L (ppb)

2/20/2025

Occurs in two forms — trivalent (an essential nutrient in trace amounts) and hexavalent (linked to increased cancer risk).

Aluminum

Detected: 370 UG/L (ppb)

Found at 2 providers

Arsenic

Detected: 8.4 UG/L (ppb)

7/9/2025

Occurs naturally in some groundwater. Long-term exposure above the legal limit (10 ppb) has been linked to increased cancer risk and cardiovascular disease.

Disinfection Byproducts

Formed when chlorine used to disinfect water reacts with organic matter

Chloroform

Detected: 26 UG/L (ppb)

Found at 27 providers

One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.

Bromodichloromethane

Detected: 13 UG/L (ppb)

Found at 29 providers

Dibromochloromethane

Detected: 16 UG/L (ppb)

Found at 28 providers

TTHM

Detected: 42 UG/L (ppb)

Found at 27 providers

A group of disinfection byproducts formed when chlorine reacts with organic matter. Long-term exposure above the legal limit has been linked to increased cancer risk in some studies.

Totalhaloaceticacids (HAA5)

Detected: 37 UG/L (ppb)

Found at 19 providers

Bromoform

Detected: 4.7 UG/L (ppb)

Found at 6 providers

Inorganics

Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride

Chloride

Detected: 27 MG/L (ppm)

Found at 13 providers

Nitrate

Detected: 6 MG/L (ppm)

Found at 20 providers

Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.

Sulfate

Detected: 34 MG/L (ppm)

Found at 13 providers

Fluoride

Detected: 0.32 MG/L (ppm)

Found at 9 providers

Often added deliberately for dental health; can also occur naturally.

Minerals

Everyday minerals that mainly affect taste and water hardness

Magnesium

Detected: 27 MG/L (ppm)

Found at 12 providers

Sodium

Detected: 21 MG/L (ppm)

Found at 11 providers

Calcium

Detected: 53 MG/L (ppm)

Found at 12 providers

Properties

General water characteristics like pH, hardness, and cloudiness (turbidity)

Hardness, Total (ASCACO3)

Detected: 190 MG/L (ppm)

Found at 10 providers

Detected: 8.8 PH

Found at 10 providers

A measure of how acidic or basic the water is (7 is neutral). Affects taste and plumbing, not a direct health measure.

Gross Alpha Particle Activity

Detected: 3.18 PCI/L

Found at 5 providers

PFAS & Emerging Contaminants

Human-made "forever chemicals" and other substances not yet fully regulated

Lithium

Detected: 9.48 µg/L (ppb)

9/16/2025

Occurs naturally in some groundwater. Not currently federally regulated in drinking water.

Calculated Parameters

Values worked out mathematically from other test results, not measured directly

Alkalinity, Bicarbonate

Detected: 200 MG/L (ppm)

Found at 11 providers

Alkalinity, Carbonate

Detected: 5.8 MG/L (ppm)

2/20/2025

Other

Additional substances tested that don't fit neatly into the categories above

Odor

Detected: 4 TON

Found at 6 providers

Turbidity

Detected: 38 NTU

Found at 8 providers

A measure of water cloudiness from suspended particles.

TDS

Detected: 280 MG/L (ppm)

Found at 13 providers

Alkalinity, Total

Detected: 200 MG/L (ppm)

Found at 13 providers

Dichloroaceticacid

Detected: 13 UG/L (ppb)

Found at 23 providers

Trichloroaceticacid

Detected: 18 UG/L (ppb)

Found at 23 providers

Carbon, Total

Detected: 1.8 MG/L (ppm)

Found at 4 providers

Dibromoaceticacid

Detected: 2.7 UG/L (ppb)

Found at 10 providers

Conductivity (at 25°C)

Detected: 460 UMHO/CM

Found at 9 providers

Color

Detected: 15 UNITS

Found at 2 providers

Monobromoaceticacid

Detected: 1.1 UG/L (ppb)

6/2/2025

Radium-228

Detected: 0.677 PCI/L

4/9/2025

Monochloroaceticacid

Detected: 5.6 UG/L (ppb)

7/29/2025

Filtration considerations: General system types, not a specific product recommendation.

Contaminant	Whole-House Carbon	Under-Sink RO	Under-Sink Carbon
Total Trihalomethanes (TTHM)	Yes	Yes	Yes
Haloacetic Acids (HAA5)	Yes	Yes	Yes
Chloroform	Yes	Yes	Yes
Chlorine / Taste	Yes	Yes	Yes
Sediment / Turbidity	Yes	Yes	Yes
Trichloroethylene	Yes	Yes	Yes
Tetrachloroethylene	Yes	Yes	Yes
cis-1,2-Dichloroethylene	Yes	Yes	Yes
1,1-Dichloroethylene	Yes	Yes	Yes
Bromoform	Yes	Yes	Yes
Bromodichloromethane	Yes	Yes	Yes
Dibromochloromethane	Yes	Yes	Yes
1,1,2-Trichloroethane	Yes	Yes	Yes
Vinyl Chloride	Yes	Yes	Yes
Carbon Tetrachloride	Yes	Yes	Yes
Benzene	Yes	Yes	Yes
Toluene	Yes	Yes	Yes
Xylene	Yes	Yes	Yes
Totalhaloaceticacids (HAA5)	Yes	Yes	Yes
Lead	Partial	Yes	Partial
Arsenic	Partial	Yes	Partial
Chromium-6 (Hexavalent)	Partial	Yes	Partial
Copper	Partial	Yes	Partial
Combined Uranium	Partial	Yes	Partial
PFOA	Partial	Yes*	Partial
PFOS	Partial	Yes*	Partial
Nitrate	Partial	Yes	Partial
Combined Radium	Partial	Yes	Partial
Odor	Partial	Yes	Partial
Chloride	Partial	Yes	Partial
Sulfate	Partial	Yes	Partial
TDS	Partial	Yes	Partial
Barium	Partial	Yes	Partial
Alkalinity, Total	Partial	Yes	Partial
Copper, Free	Partial	Yes	Partial
Dichloroaceticacid	Partial	Yes	Partial
Trichloroaceticacid	Partial	Yes	Partial
Carbon, Total	Partial	Yes	Partial
Fluoride	Partial	Yes	Partial
Zinc	Partial	Yes	Partial
Manganese	Partial	Yes	Partial
Chromium, Hex	Partial	Yes	Partial
Iron	Partial	Yes	Partial
Dibromoaceticacid	Partial	Yes	Partial
Conductivity (at 25°C)	Partial	Yes	Partial
Chromium	Partial	Yes	Partial
Color	Partial	Yes	Partial
Aluminum	Partial	Yes	Partial
Monobromoaceticacid	Partial	Yes	Partial
Lithium	Partial	Yes*	Partial
Monochloroaceticacid	Partial	Yes	Partial
Coliform Bacteria (indicator)	No	Yes	No
Magnesium	No	Partial	No
Sodium	No	Partial	No
Calcium	No	Partial	No
Hardness, Total (ASCACO3)	No	No	No
pH	No	No	No
Alkalinity, Bicarbonate	No	No	No
Gross Alpha Particle Activity	No	No	No
Alkalinity, Carbonate	No	No	No

Browse by city

Individual water providers

EUREKA, CITY OF No violations on file — pop. 27,078 — serves EUREKA
ARCATA, CITY OF No violations on file — pop. 20,875 — serves ARCATA
HUMBOLDT C.S.D. No violations on file — pop. 19,807
MCKINLEYVILLE C.S.D. No violations on file — pop. 16,900
FORTUNA, CITY OF No violations on file — pop. 12,133 — serves FORTUNA
FRANKLIN K LANE GROVE No violations on file — pop. 7,500
RIO DELL, CITY OF No violations on file — pop. 3,300 — serves RIO DELL
GARBERVILLE SANITARY DISTRICT No violations on file — pop. 2,041
FIELDBROOK GLENDALE C.S.D. No violations on file — pop. 1,845
DEL ORO WATER CO-FERNDALE No violations on file — pop. 1,662
CALIF. PARKS & RECREATION No violations on file — pop. 1,600
RICHARDSON GROVE SP-STATE PARKS No violations on file — pop. 1,509

FIELDS LANDING WATER WORKS No violations on file — pop. 1,500
HYDESVILLE CO. W.D. Open violation — pop. 1,366
WILLOW CREEK C.S.D. Open violation — pop. 1,298
REDWAY C.S.D. No violations on file — pop. 1,207
BLUE LAKE, CITY OF No violations on file — pop. 1,172 — serves BLUE LAKE
TRINIDAD, CITY OF No violations on file — pop. 1,072 — serves TRINIDAD
SUE-MEG SP-STATE PARKS No violations on file — pop. 1,000
CALTRANS-TRINIDAD NB No violations on file — pop. 1,000
GOLD BLUFFS BEACH CG-STATE PARKS No violations on file — pop. 998
JACOBY CREEK CWD No violations on file — pop. 924
SCOTIA CSD Open violation — pop. 906
CALTRANS-TRINIDAD SB No violations on file — pop. 900
LOLETA C.S.D. No violations on file — pop. 828
RESORT IMPROVEMENT DISTRICT #1 No violations on file — pop. 803
RICHARDSON GROVE CAMPGROUND & RV PARK No violations on file — pop. 750
MANILA COMMUNITY SERVICES DIST. No violations on file — pop. 750
CSP BIG TREE SYSTEM No violations on file — pop. 742
HUMBOLDT BAY MWD No violations on file — pop. 680
ORLEANS C.S.D. Open violation — pop. 636
CALIF PARKS & RECREATION No violations on file — pop. 600
SOUTH FORK HIGH SCHOOL No violations on file — pop. 600
VAN DUZEN - HUMBOLDT CO. PARKS No violations on file — pop. 551
WESTHAVEN MWC No violations on file — pop. 500
PRAIRIE CREEK SP-STATE PARKS No violations on file — pop. 500
MIRANDA C.S.D. No violations on file — pop. 492
WESTHAVEN C.S.D. No violations on file — pop. 490
WEOTT C.S.D. Older violation on record — pop. 448
STONE LAGOON-STATE PARKS No violations on file — pop. 402
ORICK C.S.D. No violations on file — pop. 396
JOHNSON RANCHES, INC No violations on file — pop. 390
BENBOW-DEL ORO W.C. No violations on file — pop. 370
STATE PARK SERVICE No violations on file — pop. 369
BURLINGTON CG-STATE PARKS No violations on file — pop. 368
HIDDEN SPRINGS CG-STATE PARKS No violations on file — pop. 350
RIVERSIDE CSD No violations on file — pop. 333
MYERS FLAT M.W.S. INC. Open violation — pop. 330
PALMER CREEK CSD Open violation — pop. 320
A W WAY - HUMBOLDT CO. PARKS No violations on file — pop. 301
REDWOOD TRAILS WATER SYSTEM No violations on file — pop. 300
FRESHWATER SCHOOL No violations on file — pop. 300
PHILLIPSVILLE C.S.D. Open violation — pop. 300
ANGELINA No violations on file — pop. 300
BIG LAGOON - HUMBOLDT CO. PARKS No violations on file — pop. 300
DEAN CREEK RESORT No violations on file — pop. 283
CAL FIRE-EEL RIVER CONSERVATION CAMP Open violation — pop. 280
CALIF PARKS & RECREATION No violations on file — pop. 275
REDWOOD MEMORIAL HOSPITAL No violations on file — pop. 250
GREEN DIAMOND RESOURCE COMPANY - KORBEL No violations on file — pop. 250
LARRUPIN CAFE Open violation — pop. 247
SYLVAN HARBOR TRAILER PARK No violations on file — pop. 231
STATE PARK SERVICE No violations on file — pop. 225
U.S. FOREST SERVICE No violations on file — pop. 225
U.S. FOREST SERVICE No violations on file — pop. 225
FRESHWATER WATER SERVICE No violations on file — pop. 200
COOKSON RANCH No violations on file — pop. 200
PRAIRIE CREEK MOTEL No violations on file — pop. 200
HANSEN'S WIRE ROPE & CAFE No violations on file — pop. 200
FOUNDERS GROVE-STATE PARKS No violations on file — pop. 200
EMERALD FOREST No violations on file — pop. 200
CHIMNEY TREE No violations on file — pop. 200
FORT HUMBOLDT No violations on file — pop. 195
VIEW CREST LODGE No violations on file — pop. 174
THUNDERBIRD TRAILER PARK WATER No violations on file — pop. 170
U.S. FOREST SERVICE No violations on file — pop. 165
CUDDEBACK GRAMMAR SCHOOL Open violation — pop. 165
GRIZZLY CREEK SP-STATE PARKS No violations on file — pop. 153
WILLIAMS GROVE - STATE PARKS No violations on file — pop. 150
LARRUPIN' CAFE No violations on file — pop. 150
ALBEE CREEK CAMPGROUND No violations on file — pop. 136
TRINIDAD EXTENDED STAY RV No violations on file — pop. 130
FISH LAKE CG - SRNF No violations on file — pop. 130
ANCIENT REDWOODS RESORT No violations on file — pop. 126
MOONSTONE BEACH TRINIDAD No violations on file — pop. 125
EEL RIVER CONSERVATION CAMP No violations on file — pop. 121
EEL RIVER CONSERVATION CAMP No violations on file — pop. 121
MOBILE ESTATES FN Older violation on record — pop. 120
SACTISH-CHENONE No violations on file — pop. 120
MCKINLEYVILLE MOTEL & TRAILER No violations on file — pop. 120
REDCREST WATER WORKS No violations on file — pop. 116
LUNDBLADE WATER COMPANY No violations on file — pop. 115
BIG LAGOON CSD No violations on file — pop. 112
TRIUMPHANT LIFE CAMP No violations on file — pop. 110
CAMP TRINIDAD RV RESORT No violations on file — pop. 104
REDWOOD EMPIRE G&CC No violations on file — pop. 102
BLUFF CREEK RESORT No violations on file — pop. 100
RUTH LAKE STORE No violations on file — pop. 100
ORLEANS HOTEL No violations on file — pop. 100
FIRHAVEN WATER No violations on file — pop. 100
MAD RIVER HATCHERY No violations on file — pop. 100
CAMP MATTOLE No violations on file — pop. 100
FORSON WATER COMPANY No violations on file — pop. 100
STAFFORD R V PARK No violations on file — pop. 100
HUMBOLDT CREAMERY No violations on file — pop. 100 — serves FORTUNA
CALIFORNIA REDWOOD CO. - BRAINARD No violations on file — pop. 100
GAMBI WATER SYSTEM No violations on file — pop. 90
BULL CREEK RES AND TRAILER No violations on file — pop. 90
ENGLEWOOD INDUSTRIAL PARK No violations on file — pop. 90
MILL CREEK M.W.C. Open violation — pop. 85
ORLEANS MUTUAL WATER COMPANY Open violation — pop. 85
SINGING TREES AND OVERPACK'S No violations on file — pop. 80
CAL FIRE-HIGH ROCK CONSERVATION CAMP Open violation — pop. 80
CALIFORNIA REDWOOD CO.-ORICK No violations on file — pop. 80
FRESHWATER PARK W.S. No violations on file — pop. 77
HONEYDEW COUNTRY STORE No violations on file — pop. 76
BRICELAND C.S.D. No violations on file — pop. 75
WADDINGTON W.W. No violations on file — pop. 75
MATTOLE CAMPGROUND BLM No violations on file — pop. 75
BIG LAGOON PARK WATER CO. No violations on file — pop. 70
BEACH CREEK MOBILE HOME PARK No violations on file — pop. 67
PALM MOTEL AND CAFE No violations on file — pop. 66
AZALEA GLEN No violations on file — pop. 65
PALOMINO ESTATES WATER COMPANY Open violation — pop. 64
SEAWOOD ESTATES MUTUAL WATER COMPANY No violations on file — pop. 63
U.S. FOREST SERVICE No violations on file — pop. 62
HUMBOLDT FIRE CENTER No violations on file — pop. 60
HUMBOLDT ECOLOGY CENTER No violations on file — pop. 60
MATILTON FIELD No violations on file — pop. 60
THOMPSON CAMPGROUND No violations on file — pop. 60
U.S. FOREST SERVICE No violations on file — pop. 60
U.S. FOREST SERVICE No violations on file — pop. 60
MATTOLE TRIPLE JUNCTION HIGH SCHOOL Older violation on record — pop. 60
RIVERBEND MOBILE HOME PARK Open violation — pop. 60
ALDERPOINT COUNTY WATER No violations on file — pop. 58
RIVERDALE PARK No violations on file — pop. 57
MIDFIELD MUTUAL WATER COMPANY No violations on file — pop. 56
MIDFIELD MUTUAL WATER COMPANY No violations on file — pop. 56
PHILPOT CAMPGROUND No violations on file — pop. 55
OCEAN GROVE LODGE No violations on file — pop. 53
VAN DUZEN RESORT No violations on file — pop. 51
ELK COUNTRY RV RESORT AND CAMPGROUND No violations on file — pop. 51
JACK NORTON SCHOOL No violations on file — pop. 50
CUNEO CREEK GROUP CAMPGROUND No violations on file — pop. 50
LARSEN'S TRAILER PARK No violations on file — pop. 50
DINSMORE LODGE No violations on file — pop. 50
BEGINNINGS No violations on file — pop. 50
W & W WATER SYSTEM No violations on file — pop. 50
DAN JOHNSON No violations on file — pop. 50
CASTERLIN SCHOOL Open violation — pop. 50
MATTOLE ELEMENTARY SCHOOL Open violation — pop. 50
BRIDGEVILLE ELEM. SCHOOL Open violation — pop. 50
WHITETHORN CONSTRUCTION No violations on file — pop. 45
WHITETHORN ELEMENTARY SCHOOL Open violation — pop. 42
KIMTU MEADOWS MWC Older violation on record — pop. 41
ELK RIVER SCOUT CAMP No violations on file — pop. 40
THUNDER MOUNTAIN W.A. No violations on file — pop. 40
HARTSOOK INN No violations on file — pop. 40
KNEELAND SCHOOL No violations on file — pop. 40
RUBY VALLEY WATER No violations on file — pop. 36
MING TREE REALTY No violations on file — pop. 36
SQUIRES WATER SYSTEM No violations on file — pop. 36
CHRISTINE C HADLEY No violations on file — pop. 35
USFS No violations on file — pop. 35
U.S. FOREST SERVICE No violations on file — pop. 35
AL JESS, INC. WATER COMPANY No violations on file — pop. 33
MOONSTONE HEIGHTS MWA No violations on file — pop. 33
MAPLE CREEK ELM. SCHOOL No violations on file — pop. 31
YELLOW ROSE No violations on file — pop. 30
ROSS SNYDER No violations on file — pop. 30
MARILANN COURT W.S. No violations on file — pop. 30
ALTON TAVERN WATER SYSTEM No violations on file — pop. 30
SALMON CREEK SCHOOL No violations on file — pop. 30
PEPPERWOOD FALLS INN No violations on file — pop. 30
TRINITY RIVER TRAILER PARK No violations on file — pop. 30
TONITA WILSON No violations on file — pop. 30
U.S. FOREST SERVICE No violations on file — pop. 30
HEARTWOOD INSTITUTE No violations on file — pop. 30
BISHOP PINE LODGE No violations on file — pop. 28
THOMAS P JORDAN No violations on file — pop. 27
RIVERSIDE ACRES No violations on file — pop. 27
THE HIDEAWAY No violations on file — pop. 25
HOWARD & LINDA MORRIS No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS MAD RIVER CMP 10-54-1830 No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
WHITETHORN MARKET No violations on file — pop. 25
BEVERLY DRAKE No violations on file — pop. 25
GRIZZLY BLUFF SCHOOL No violations on file — pop. 25
JUDY'S MARKET No violations on file — pop. 25
JORDANS WATER SYSTEM No violations on file — pop. 25
T E MATHEWS No violations on file — pop. 25
GREENPOINT SCHOOL No violations on file — pop. 25
WOOD GULCH WATER SYSTEM No violations on file — pop. 25
LITTLE RED HEN No violations on file — pop. 25
WAILAKI & NADELOS C.G. No violations on file — pop. 25
OLD WEST CAFE No violations on file — pop. 25
AVENUE OF THE GIANTS CAFE No violations on file — pop. 25
HILLTOP WATER SYSTEM No violations on file — pop. 25
BENBOW WATER SYSTEM No violations on file — pop. 25
CSP TRINIDAD STATE BEACH No violations on file — pop. 25
CSP BULL CREEK RESIDENCE 14 No violations on file — pop. 25
BLAIR FOUNTAIN No violations on file — pop. 25
U.S. FOREST SERVICE No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
USFS SIX RIVERS NF No violations on file — pop. 25
SWAIN S FLAT OUTPOST No violations on file — pop. 25
BISHOP PINE LODGE Older violation on record — pop. 25
M.F. MITCHELL & COMPANY No violations on file — pop. 25
BOISE CREEK CG-SNRF No violations on file — pop. 25
CHEZEM RV PARK Older violation on record — pop. 25
KING RANGE ADMIN-BLM No violations on file — pop. 25
PATRICK'S POINT INN No violations on file — pop. 25
FERN SPRINGS WATER COMPANY No violations on file — pop. 24
EUCALYPTUS MOTEL No violations on file — pop. 24
HONEYDEW ELEMENTARY SCHOOL No violations on file — pop. 24
ARCATA REDWOOD CO.-VALLEY GREEN No violations on file — pop. 20
R PLACE No violations on file — pop. 15
AUDREY'S WATER SYSTEM No violations on file — pop. 12
TOOBY LOVEJOY SPRING No violations on file — pop. 6
MARTIN AND SHIRLEY'S STORE No violations on file — pop. 4
PETROLIA STORE No violations on file — pop. 3
PRAIRIE CREEK MOTEL No violations on file — pop. 2
AZALEA MOBILE H.P. No violations on file — pop. 0
USFS SIX RIVERS NF No violations on file — pop. 0
USFS SIX RIVERS NF No violations on file — pop. 0
USFS SIX RIVERS NF No violations on file — pop. 0
USFS SIX RIVERS NF No violations on file — pop. 0
USFS SIX RIVERS NF No violations on file — pop. 0
USFS SIX RIVERS NF No violations on file — pop. 0
USFS SIX RIVERS NF No violations on file — pop. 0
KENMAR WATER WORKS No violations on file — pop. 0
BLUE LAKE MH PARK No violations on file — pop. 0
LOUISIANA PACIFIC - SAMOA No violations on file — pop. 0
SEAVIEW MOBILE HOME ESTATES No violations on file — pop. 0
BRIDGEVILLE WATER SYSTEM No violations on file — pop. 0
GREEN DIAMOND RESOURCE CO.-BIG LAGOON No violations on file — pop. 0

Want a different ZIP, city, or address?

Look up your water quality →

Learn more

What is TTHM? Understanding EPA Violation Status Is Chromium-6 Dangerous? Whole-House vs. Under-Sink Filtration Lead and Copper in Drinking Water What is PFAS? Arsenic and Uranium Explained Nitrate and Fluoride Explained Water Hardness, pH, and Turbidity What is Coliform Bacteria?

Humboldt County, CA Water Quality Report

Violations on file

Contaminants found

Browse by city

Individual water providers