🔍Straight from EPA

🧪Real Lab Results

📅Updated Quarterly

🏠Local Expertise

Results for Mendocino County, CA

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

Quick answer: Mendocino County has 265 water providers profiled, sorted by population served.

Lead Summary
Copper Summary
Aggressive Index
Magnesium
Sodium
Calcium
Alkalinity, Total
Alkalinity, Bicarbonate
Hardness, Total (ASCACO3)
TDS
Sulfate
Chloride
Fluoride
Radium-228
Gross Alpha Particle Activity
Gross Beta Particle Activity
pH
Conductivity (at 25°C)
Color
Manganese
Alkalinity, Carbonate
Nitrate
Turbidity
Odor
Boron, Total
Iron
Aluminum
Zinc
Combined Radium (-226 & -228)
Barium
TTHM
Bromoform
Bromodichloromethane
Dibromochloromethane
Dibromoaceticacid
Bromate
Totalhaloaceticacids (HAA5)
Dichloroaceticacid
Trichloroaceticacid
Chloroform
Chromium, Hex
Lead
Copper, Free
Foamingagents (SURFACTANTS)
Nickel
Monobromoaceticacid
Asbestos
Nitrate-Nitrite
PFBS
PFHXS
PFOS
PFBA
PFHPA
PFOA
PFHXA
PFPEA
6:2 Fts
Monochloroaceticacid
Perfluorobutanesulfonicacid (PFBS)
Perfluorohexanesulfonicacid (PFHxS)
Perfluoroctanesulfonicacid (PFOS)
Carbon, Total
Arsenic
Adsorbableorganicfluorine

Violations on file

Coliform (TCR)

Older/archived health-based violation

Found at 2 of 265 providers

Lead And Copper Rule Revisions

Currently open health violation

Found at 8 of 265 providers

Surface Water Treatment Rule

Currently open health violation

Found at 4 of 265 providers

Contaminants found

Metals

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

Lead Summary

Detected: 0.016 mg/L (ppm)

Found at 75 providers

Copper Summary

Detected: 8.6 mg/L (ppm)

Found at 29 providers

Manganese

Detected: 850 UG/L (ppb)

Found at 18 providers

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

Iron

Detected: 2300 UG/L (ppb)

Found at 14 providers

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

Aluminum

Detected: 820 UG/L (ppb)

Found at 7 providers

Zinc

Detected: 150 UG/L (ppb)

Found at 3 providers

Barium

Detected: 490 UG/L (ppb)

Found at 9 providers

Chromium, Hex

Detected: 0.453 UG/L (ppb)

Found at 7 providers

Lead

Detected: 160 UG/L (ppb)

Found at 5 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.

Copper, Free

Detected: 2100 UG/L (ppb)

Found at 21 providers

Nickel

Detected: 14 UG/L (ppb)

3/6/2025

Arsenic

Detected: 4.3 UG/L (ppb)

Found at 2 providers

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

TTHM

Detected: 110.3 UG/L (ppb)

Found at 21 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.

Bromoform

Detected: 31.73 UG/L (ppb)

Found at 9 providers

Bromodichloromethane

Detected: 22 UG/L (ppb)

Found at 20 providers

Dibromochloromethane

Detected: 21 UG/L (ppb)

Found at 20 providers

Totalhaloaceticacids (HAA5)

Detected: 54 UG/L (ppb)

Found at 18 providers

Chloroform

Detected: 99.21 UG/L (ppb)

Found at 19 providers

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

Inorganics

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

Sulfate

Detected: 20 MG/L (ppm)

Found at 21 providers

Chloride

Detected: 52 MG/L (ppm)

Found at 21 providers

Fluoride

Detected: 1.5 MG/L (ppm)

Found at 12 providers

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

Nitrate

Detected: 15 MG/L (ppm)

Found at 59 providers

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

Boron, Total

Detected: 540 UG/L (ppb)

Found at 15 providers

Nitrate-Nitrite

Detected: 1.2 MG/L (ppm)

10/14/2025

Minerals

Everyday minerals that mainly affect taste and water hardness

Magnesium

Detected: 17 MG/L (ppm)

Found at 21 providers

Sodium

Detected: 82 MG/L (ppm)

Found at 21 providers

Calcium

Detected: 57 MG/L (ppm)

Found at 21 providers

Properties

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

Hardness, Total (ASCACO3)

Detected: 201 MG/L (ppm)

Found at 21 providers

Gross Alpha Particle Activity

Detected: 13.3 PCI/L

Found at 13 providers

Detected: 8.25 PH

Found at 22 providers

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

PFAS & Emerging Contaminants

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

PFBS

Detected: 0.0036 µg/L (ppb)

10/18/2023

PFHXS

Detected: 0.0036 µg/L (ppb)

10/18/2023

PFOS

Detected: 0.0043 µg/L (ppb)

10/18/2023

One of two PFAS with an enforceable federal limit (4 ppt) since 2024.

PFBA

Detected: 0.0092 µg/L (ppb)

1/17/2023

PFHPA

Detected: 0.0033 µg/L (ppb)

1/17/2023

PFOA

Detected: 0.0069 µg/L (ppb)

1/17/2023

One of two PFAS with an enforceable federal limit (4 ppt) since 2024.

PFHXA

Detected: 0.0044 µg/L (ppb)

1/17/2023

PFPEA

Detected: 0.0051 µg/L (ppb)

1/17/2023

6:2 Fts

Detected: 0.0178 µg/L (ppb)

7/19/2023

Calculated Parameters

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

Alkalinity, Bicarbonate

Detected: 220 MG/L (ppm)

Found at 22 providers

Alkalinity, Carbonate

Detected: 20 MG/L (ppm)

Found at 2 providers

Other

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

Aggressive Index

Detected: 12.12 AGGR

Found at 20 providers

Alkalinity, Total

Detected: 220 MG/L (ppm)

Found at 22 providers

TDS

Detected: 370 MG/L (ppm)

Found at 21 providers

Radium-228

Detected: 1.37 PCI/L

Found at 15 providers

Gross Beta Particle Activity

Detected: 8.71 PCI/L

Found at 4 providers

Conductivity (at 25°C)

Detected: 550 UMHO/CM

Found at 21 providers

Color

Detected: 20 UNITS

Found at 22 providers

Turbidity

Detected: 3.9 NTU

Found at 14 providers

A measure of water cloudiness from suspended particles.

Odor

Detected: 14 TON

Found at 14 providers

Combined Radium (-226 & -228)

Detected: 1.38 PCI/L

Found at 5 providers

A naturally occurring radioactive element found in some groundwater.

Dibromoaceticacid

Detected: 10 UG/L (ppb)

Found at 18 providers

Bromate

Detected: 6.6 UG/L (ppb)

Found at 3 providers

Dichloroaceticacid

Detected: 34.8 UG/L (ppb)

Found at 15 providers

Trichloroaceticacid

Detected: 29.2 UG/L (ppb)

Found at 17 providers

Foamingagents (SURFACTANTS)

Detected: 0.06 MG/L (ppm)

9/15/2025

Monobromoaceticacid

Detected: 2.3 UG/L (ppb)

Found at 2 providers

Asbestos

Detected: 0.2 MFL

8/4/2025

Monochloroaceticacid

Detected: 3.6 UG/L (ppb)

7/14/2025

Perfluorobutanesulfonicacid (PFBS)

Detected: 3.3 NG/L (ppt)

4/22/2025

Perfluorohexanesulfonicacid (PFHxS)

Detected: 2 NG/L (ppt)

4/22/2025

Perfluoroctanesulfonicacid (PFOS)

Detected: 2.7 NG/L (ppt)

4/22/2025

One of two PFAS with an enforceable federal limit (4 ppt) since 2024.

Carbon, Total

Detected: 1.77 MG/L (ppm)

Found at 3 providers

Adsorbableorganicfluorine

Detected: 1400 NG/L (ppt)

3/4/2025

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
Aggressive Index	Partial	Yes	Partial
Alkalinity, Total	Partial	Yes	Partial
TDS	Partial	Yes	Partial
Sulfate	Partial	Yes	Partial
Chloride	Partial	Yes	Partial
Fluoride	Partial	Yes	Partial
Gross Beta Particle Activity	Partial	Yes	Partial
Conductivity (at 25°C)	Partial	Yes	Partial
Color	Partial	Yes	Partial
Manganese	Partial	Yes	Partial
Odor	Partial	Yes	Partial
Boron, Total	Partial	Yes	Partial
Iron	Partial	Yes	Partial
Aluminum	Partial	Yes	Partial
Zinc	Partial	Yes	Partial
Combined Radium (-226 & -228)	Partial	Yes	Partial
Barium	Partial	Yes	Partial
Dibromoaceticacid	Partial	Yes	Partial
Bromate	Partial	Yes	Partial
Dichloroaceticacid	Partial	Yes	Partial
Trichloroaceticacid	Partial	Yes	Partial
Chromium, Hex	Partial	Yes	Partial
Copper, Free	Partial	Yes	Partial
Foamingagents (SURFACTANTS)	Partial	Yes	Partial
Nickel	Partial	Yes	Partial
Monobromoaceticacid	Partial	Yes	Partial
Asbestos	Partial	Yes	Partial
Nitrate-Nitrite	Partial	Yes	Partial
PFBS	Partial	Yes*	Partial
PFHXS	Partial	Yes*	Partial
PFBA	Partial	Yes*	Partial
PFHPA	Partial	Yes*	Partial
PFHXA	Partial	Yes*	Partial
PFPEA	Partial	Yes*	Partial
6:2 Fts	Partial	Yes*	Partial
Monochloroaceticacid	Partial	Yes	Partial
Perfluorobutanesulfonicacid (PFBS)	Partial	Yes	Partial
Perfluorohexanesulfonicacid (PFHxS)	Partial	Yes	Partial
Perfluoroctanesulfonicacid (PFOS)	Partial	Yes	Partial
Carbon, Total	Partial	Yes	Partial
Adsorbableorganicfluorine	Partial	Yes	Partial
Coliform Bacteria (indicator)	No	Yes	No
Magnesium	No	Partial	No
Sodium	No	Partial	No
Calcium	No	Partial	No
Alkalinity, Bicarbonate	No	No	No
Hardness, Total (ASCACO3)	No	No	No
Gross Alpha Particle Activity	No	No	No
pH	No	No	No
Alkalinity, Carbonate	No	No	No

Browse by city

Individual water providers

UKIAH, CITY OF No violations on file — pop. 16,607 — serves UKIAH
FORT BRAGG, CITY OF Open violation — pop. 6,919 — serves FORT BRAGG
WILLITS, CITY OF No violations on file — pop. 6,175 — serves WILLITS
MILLVIEW COUNTY WATER DISTRICT No violations on file — pop. 5,500
REDWOOD VALLEY COUNTY WATER DISTRICT No violations on file — pop. 5,200
WILLOW COUNTY WATER DISTRICT No violations on file — pop. 3,797
BROOKTRAILS TOWNSHIP CSD No violations on file — pop. 3,632
CAMPTON HEIGHTS WATER SERVICE No violations on file — pop. 3,600 — serves CAMPTON HEIGHTS
NORTH GUALALA WATER COMPANY No violations on file — pop. 2,593
ROGINA WATER COMPANY INC. Open violation — pop. 2,554
CSP-VAN DAMME STATE PARK No violations on file — pop. 2,004
U.S. ARMY CORPS-LAKE MENDO (BUSHAY SITE) No violations on file — pop. 2,000

U.S. ARMY CORPS-LAKE MENDO (KYEN CMPGRD) No violations on file — pop. 1,500
CSP-MACKERRICHER STATE PARK No violations on file — pop. 1,416
LAYTONVILLE COUNTY WATER DISTRICT No violations on file — pop. 1,152
VICTORIAN FARMHOUSE No violations on file — pop. 1,145
HOPLAND PUBLIC UTILITY DISTRICT No violations on file — pop. 1,076
KLAMATH TRINITY U S D No violations on file — pop. 800
LOLETA W W No violations on file — pop. 630
HAEHL STREET WATER SYSTEM No violations on file — pop. 587
MENDOCINO SCHOOL DISTRICT- MENDOCINO No violations on file — pop. 579
DOLPHIN ISLE MARINA No violations on file — pop. 560
CALPELLA COUNTY WATER DISTRICT No violations on file — pop. 548
TESORO 68137 No violations on file — pop. 508
CSP-STANDISH HICKEY STATE REC AREA No violations on file — pop. 503
CSP-MENDOCINO HEADLANDS-SEA ARCH No violations on file — pop. 500
MENDOCINO COUNTY FAIRGROUNDS No violations on file — pop. 500
HOPLAND PUBLIC UTILITIES DISTR No violations on file — pop. 480
POINT ARENA WATER WORKS No violations on file — pop. 459
LAYTONVILLE COUNTY WATER DISTR No violations on file — pop. 450
CSP-PT. CABRILLO LIGHT STATION SHP No violations on file — pop. 430
ALBION RIVER CAMPGROUND No violations on file — pop. 425
WENTE SCOUT RESERVATION No violations on file — pop. 422
CSP-MANCHESTER STATE PARK No violations on file — pop. 420
POINT ARENA WATER WORKS NO 1 No violations on file — pop. 400
CSP-DIMMICK WAYSIDE CAMPGROUND No violations on file — pop. 400
CITY OF 10,000 BUDDHAS Open violation — pop. 400 — serves UKIAH
MOSS COVE REST STOP (CALTRANS) No violations on file — pop. 400
CSP-MENDOCINO WOODLANDS No violations on file — pop. 400
ELK COUNTY WATER DISTRICT Open violation — pop. 380
CSP-WESTPORT STATE BEACH No violations on file — pop. 370
WESTPORT COUNTY WATER DISTRICT No violations on file — pop. 369
HIDDEN PINES CAMPGROUND No violations on file — pop. 362
ANDERSON VALLEY ELEMENTARY SCHOOL No violations on file — pop. 350
CAMP MENDOCINO No violations on file — pop. 321
PINE MOUNTAIN MUTUAL WATER CO. No violations on file — pop. 310
POTTER VALLEY SCHOOL DISTRICT Open violation — pop. 309
ROYAL CREST MOBILE ESTATES No violations on file — pop. 300
ANDERSON VALLEY HIGH SCHOOL No violations on file — pop. 300
IRVINE LODGE REST STOP (CALTRANS) No violations on file — pop. 300
EMPIRE REST STOP (CALTRANS) No violations on file — pop. 300
U.S. ARMY CORPS-LAKE MENDO (POMO SITE) No violations on file — pop. 300
ROUND VALLEY ELEMENTARY SCHOOL No violations on file — pop. 289
CAMP NAVARRO No violations on file — pop. 284
WOODSIDE RV PARK No violations on file — pop. 280
CSP-MENDOCINO HEADLANDS - FORD HOUSE No violations on file — pop. 275
MANCHESTER BEACH KOA No violations on file — pop. 273
RIDGEWOOD WATER SYSTEM No violations on file — pop. 265
GREEN ACRES TRAILER PARK No violations on file — pop. 256
IRISH BEACH WATER DISTRICT Open violation — pop. 254
TARA CAMPGROUND No violations on file — pop. 250
JOHN DODDS No violations on file — pop. 250
IMPROVEMENT DISTRICT A No violations on file — pop. 250 — serves FAIRHAVEN
RIVER ESTATES MUTUAL WATER COMPANY No violations on file — pop. 250
OCEAN'S EDGE ESTATES No violations on file — pop. 250
CSP-HENDY WOODS STATE PARK No violations on file — pop. 236
THE PEG HOUSE No violations on file — pop. 220
FLIGHT RIDGE No violations on file — pop. 206
GEORGE & RITA SAYER No violations on file — pop. 200
CENTERVILLE BEACH NAVAL FAC. No violations on file — pop. 200 — serves CENTERVILLE BEA
POMO CAMPGROUND No violations on file — pop. 200
MACCALLUM HOUSE INN No violations on file — pop. 200
U.S. ARMY CORPS-LAKE MENDO (MARINA SITE) No violations on file — pop. 200
BLACK OAK FACILITY No violations on file — pop. 200
CASPAR SOUTH SERVICE COMPANY No violations on file — pop. 188
ROUND VALLEY HIGH SCHOOL No violations on file — pop. 186
ARENA COVE TRAILER PARK No violations on file — pop. 170
SURFWOOD MUTUAL WATER CORPORATION No violations on file — pop. 160
PATTERSONS PUB No violations on file — pop. 160
WOODS, THE (MENDOCINO) No violations on file — pop. 157
ALBION FIELD STATION No violations on file — pop. 154
STANFORD INN BY THE SEA No violations on file — pop. 153
SCHOONERS LANDING No violations on file — pop. 150
CSP GARDEN CLUB AMERICA No violations on file — pop. 150 — serves NC DAY USE
MENDOCINO COAST BOTANICAL GARDENS No violations on file — pop. 150 — serves FORT BRAGG
BROOKTRAILS IMPROVEMENT DIST No violations on file — pop. 140
FETZER VINEYARDS No violations on file — pop. 136
RAY'S STATION WINERY No violations on file — pop. 134
TRILLIUM CAFE AND INN No violations on file — pop. 129
CREEKSIDE CABINS & RV RESORT Open violation — pop. 124
FLOODGATE WATER SYSTEM No violations on file — pop. 120
CDF-PARLIN FORK CONSERVATION CAMP No violations on file — pop. 120
LUNA TRATTORIA Open violation — pop. 120
LAUREN'S No violations on file — pop. 120
LEMONS' MARKET No violations on file — pop. 114
NAVARRO VINEYARDS No violations on file — pop. 112
CDF-CHAMBERLAIN CREEK CONSERVATION CAMP No violations on file — pop. 110
GREEN REAL ESTATE ENTERPRISES LLC No violations on file — pop. 108
MENDOCINO ART CENTER No violations on file — pop. 108
HARBOR TRAILER PARK No violations on file — pop. 100
DON FINCH No violations on file — pop. 100
VERDI & GENE THOMAS No violations on file — pop. 100
ORICK TRAILER PARK No violations on file — pop. 100
LORD ELLIS DRINKING FOUNTAIN No violations on file — pop. 100
NORCAL GASOLINE No violations on file — pop. 100 — serves FORT BRAGG
MEADOW ESTATES MUTUAL No violations on file — pop. 100
MENDOCINO COVE No violations on file — pop. 100
LEGGETT VALLEY SCHOOL No violations on file — pop. 100
CAFE BEAUJOLAIS No violations on file — pop. 100
FRANKIES PIZZA No violations on file — pop. 100
BUCKHORN PUB No violations on file — pop. 100
LITTLE RIVER INN No violations on file — pop. 95
LEISURE TIME RV PARK No violations on file — pop. 92
THE MADRONES No violations on file — pop. 91
LAKE VIEW MUTUAL WATER CO. No violations on file — pop. 90
MENDOCINO PRESBYTERIAN CHURCH No violations on file — pop. 90
ORR SPRINGS RESORT No violations on file — pop. 84
CLEONE CAMPGROUND AND GROCERY No violations on file — pop. 81
PARLIN FORK CONSERVATION CAMP No violations on file — pop. 80
CHAMBERLAIN CREEK CONSERVATION No violations on file — pop. 80
PARLIN FORK CONSERVATION CAMP No violations on file — pop. 80
CHAMBERLAIN CREEK No violations on file — pop. 80
COOKS VALLEY RESORT No violations on file — pop. 80
BELLA SHORES MOBILE HOME PARK No violations on file — pop. 80
HILLS RANCH MUTUAL WATER COMPANY No violations on file — pop. 79
DON STEVENS & STEVE RICHARD No violations on file — pop. 78
SHORELANDS ROAD & WATER COMPANY No violations on file — pop. 78
INN AT SCHOOLHOUSE CREEK No violations on file — pop. 77
HMC-HOOPA No violations on file — pop. 75
MANCHESTER UNION ELEMENTARY SCHOOL No violations on file — pop. 75
YOKAYO TRIBE OF INDIANS Open violation — pop. 75
EEL RIVER CHARTER SCHOOL No violations on file — pop. 75
RIVERSIDE PARK CAMPGROUND No violations on file — pop. 63
HILL HOUSE L.L.C. No violations on file — pop. 62
LIGHTHOUSE POINTE No violations on file — pop. 61
FLOW RESTAURANT No violations on file — pop. 61
SHANGRILA No violations on file — pop. 60
SAINT ORRES INN No violations on file — pop. 60
CASPAR LUMBER CO WATER SYSTEM No violations on file — pop. 60
HOWARD WILSON No violations on file — pop. 60
WHALE GULCH SCHOOL Open violation — pop. 60
ELK CREEK MOBILE HOME PARK No violations on file — pop. 57
ALBION MUTUAL WATER COMPANY No violations on file — pop. 56
POINT OF VIEW MUTUAL WATER CO No violations on file — pop. 56
SEAFOAM LODGE No violations on file — pop. 56
SEA ROCK INN No violations on file — pop. 54
SURF & SAND MOTEL No violations on file — pop. 50
EMANDAL RESORT No violations on file — pop. 50
ROE VANDYKE No violations on file — pop. 50
ALBION WHALE SCHOOL No violations on file — pop. 50
DAN CREEK LODGE No violations on file — pop. 50
HOWLING WOLF LODGE No violations on file — pop. 50
TEN MILE RIVER INN No violations on file — pop. 50
PRITCHARD JORDAN No violations on file — pop. 50
U.S. FOREST SERV.-COVELO ADMIN. SITE No violations on file — pop. 50
CZECH LODGE RV PARK No violations on file — pop. 50
HERITAGE HOUSE No violations on file — pop. 50
SEAFAIR ROAD AND WATER COMPANY No violations on file — pop. 50
MENDOCINO HOTEL No violations on file — pop. 50
HOLLY RANCH VILLAGE No violations on file — pop. 50
THE LAND No violations on file — pop. 50
MONTESSORI DEL MAR LEARNING CENTER No violations on file — pop. 50 — serves FORT BRAGG
MILLBANK PARK RESORT No violations on file — pop. 49
WILDWOOD CAMPGROUND No violations on file — pop. 48
MENDOCINO COAST LODGE No violations on file — pop. 48
ANDERSON VALLEY BREWING COMPANY No violations on file — pop. 47
BACHMANN HILL SCHOOL No violations on file — pop. 45
BROILER MOTEL No violations on file — pop. 45
CASPAR CREEK LEARNING COMMUNITY, INC. No violations on file — pop. 45
HARVEST AT MENDOSAS No violations on file — pop. 45
GOLDENEYE WINERY No violations on file — pop. 43
HIGHLAND GUEST RANCH No violations on file — pop. 42
BRANSCOMB MOBILE HOME PARK Open violation — pop. 42
POINT CABRILLO HIGHLANDS No violations on file — pop. 42
MARIPOSA INSTITUTE Older violation on record — pop. 42
MENDOCINO REDWOOD COMPANY-FORT BRAGG No violations on file — pop. 40
FRANK E. PEASE No violations on file — pop. 40
MANUS WATER SYSTEM No violations on file — pop. 40
JOHN CROWLEY No violations on file — pop. 40
M & T OLSEN, H LOPEZ No violations on file — pop. 40
BEACH COMBER MOTEL No violations on file — pop. 40
WELLSPRING RENEWAL CENTER Older violation on record — pop. 40
LITTLE LAKE MOBILE HOME PARK No violations on file — pop. 38
PENNYROYAL FARM No violations on file — pop. 37
BIG RIVER VISTA MUTUAL WATER COMPANY No violations on file — pop. 36
RESTING OAK VILLAGE No violations on file — pop. 35
BIG BEND LODGE No violations on file — pop. 35
MENDOCINO SCHOOL DISTRICT-COMPTCHE No violations on file — pop. 35
CASPAR BEACH RV PARK No violations on file — pop. 35
REDWOODS RIVER RESORT & CAMPGROUND No violations on file — pop. 34
BLACKBERRY INN No violations on file — pop. 33
WILLOWS ASSOCIATION No violations on file — pop. 33
I & E LATH MILL No violations on file — pop. 31
HAROLD & JOANNE HAGE No violations on file — pop. 30
JAMES & KATHLEEN TOBIN No violations on file — pop. 30
SUTHERLAND WATERWORKS No violations on file — pop. 30
JUG HANDLE CREEK FARM No violations on file — pop. 30
COVELO MOBILE HOME PARK No violations on file — pop. 30
CSP-RUSSIAN GULCH STATE PARK No violations on file — pop. 30
SHORELANDS ROAD AND WATER MUTU No violations on file — pop. 29
SHORELINE COTTAGES No violations on file — pop. 29
CLEONE LODGE INN No violations on file — pop. 28
MEMBERS OF THE NAVARRO WATER No violations on file — pop. 28
EARLY EDUCATION CENTER, INC No violations on file — pop. 28
MENDOCINO COAST CHRISTIAN SCHOOL Older violation on record — pop. 28
MENDOCINO INN AND FARM - A No violations on file — pop. 27
MENDOCINO INN AND FARM - B No violations on file — pop. 27
MENDOCINO GROVE No violations on file — pop. 27
NELSON FAMILY VINEYARDS No violations on file — pop. 27 — serves UKIAH
WHITE DEER LODGE WATER SYSTEM No violations on file — pop. 26
STEVE HENCZ No violations on file — pop. 26
KONICKE WATER SYSTEM No violations on file — pop. 26
FOG EATER CAFE No violations on file — pop. 26
MENDOCINO MARKET No violations on file — pop. 26
KELLEY PROPERTIES No violations on file — pop. 25
OCEAN VIEW LODGING No violations on file — pop. 25
DAVE SWEHLA No violations on file — pop. 25
INDIAN CREEK COURT No violations on file — pop. 25
BLM No violations on file — pop. 25
BLM No violations on file — pop. 25
BLM No violations on file — pop. 25
HILL TOP TAVERN No violations on file — pop. 25
RIVERSIDE ACRES ASSOCIATION No violations on file — pop. 25
CSP CALIFORNIA STATE PARKS No violations on file — pop. 25 — serves NC SMITHE ROWDS
CSP RICHARDSON GROVE SP No violations on file — pop. 25
BLM No violations on file — pop. 25
HI SEAS MOTEL No violations on file — pop. 25
USFS-EEL RIVER CAMP No violations on file — pop. 25
WAGON WHEEL MOTEL No violations on file — pop. 25
MENDOCINO INN AND FARM - C No violations on file — pop. 25
COAST INN AND SPA No violations on file — pop. 25
SHELL BUILDING No violations on file — pop. 25
ROEDERER ESTATE WINERY No violations on file — pop. 25
POINT ARENA LIGHTHOUSE No violations on file — pop. 25
MENDOCINO SCHOOL DISTRICT-ALBION SCHOOL No violations on file — pop. 25
PACIFIC REEFS WATER DISTRICT No violations on file — pop. 25
DICK'S PLACE No violations on file — pop. 25
ANDERSON VALLEY HEALTH CENTER No violations on file — pop. 25
REDWOOD DRIVE-IN No violations on file — pop. 25
BOONVILLE HOTEL No violations on file — pop. 25
OFFSTREET STUDIOS No violations on file — pop. 25
BLACKBIRD FARM No violations on file — pop. 25
MAGGY HAWK TASTING ROOM No violations on file — pop. 25
HORSESHOE CIRCLE WATER ASSOCIATION No violations on file — pop. 24
LEONARD LAKE No violations on file — pop. 21
ELSIE SKBER No violations on file — pop. 20
LOBOAS CORNER MOBILEHOME PARK No violations on file — pop. 16
REDWOOD VIEW RESORT No violations on file — pop. 15
HILLCREST MOBILEHOME PARK No violations on file — pop. 14
CSP STANDISH HICKEY SRA EAST No violations on file — pop. 11 — serves NC CMPG
TRAVELERS TRAILER PARK No violations on file — pop. 10
FLORENCE KOCHEVAR No violations on file — pop. 6
PACIFIC REEFS CALIF WATER DIST No violations on file — pop. 6
PADMA JONG No violations on file — pop. 5
CHALFANT/LEDFORD RANCH No violations on file — pop. 0
GOLDEN RULE No violations on file — pop. 0
RUSSIAN RIVER PISTACHIOS, INC No violations on file — pop. 0
DOS RIOS MUTUAL WATER CORP No violations on file — pop. 0
DANN CREEK WATER USERS No violations on file — pop. 0
BRACKETT'S MOBILE HOME PARK No violations on file — pop. 0
BESSIE THRILKILL No violations on file — pop. 0
HRSP-FEDERATION GROVE No violations on file — pop. 0 — serves NC DAY USE
HRSP-ALBEE CREEK CAMPGROUND No violations on file — pop. 0
STATE PARKS EEL RIVER DISTRICT No violations on file — pop. 0 — serves BLAIR FOUNTAIN
F.K. LANE GROVE - STATE PARK 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?

Mendocino County, CA Water Quality Report

Violations on file

Contaminants found

Browse by city

Individual water providers