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Results for Ventura County, CA

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

Quick answer: Ventura County has 179 water providers profiled, sorted by population served.

Lead Summary
Copper Summary
Nitrate
Manganese
Totalhaloaceticacids (HAA5)
TTHM
Bromoform
Bromodichloromethane
Dibromochloromethane
Dibromoaceticacid
Copper, Free
Aggressive Index
Langelier Index (pH(s))
Magnesium
Potassium
Sodium
Hardness, Total (ASCACO3)
Calcium
Alkalinity, Total
Alkalinity, Bicarbonate
TDS
Chloride
Sulfate
Fluoride
Turbidity
Gross Alpha Particle Activity
pH, Field
Boron, Total
Iron
Chromium
Zinc
Conductivity (at 25°C)
Lithium
Chromium, Hex
Tetrachloroethylene
Perchlorate
Selenium
Chloroform
Monobromoaceticacid
Dichloroaceticacid
PFOS
PFBA
Perfluorobutanesulfonicacid (PFBS)
Perfluorohexanoicacid (PFHXA)
Perfluoroctanoicacid (PFOA)
Perfluoroctanesulfonicacid (PFOS)
Perfluorohexanesulfonicacid (PFHxS)
pH
Perfluorononanoicacid (PFNA)
Radium-228
Combined Radium (-226 & -228)
Dibromomethane
Nitrate-Nitrite
Adsorbableorganicfluorine
Monochloroaceticacid
Trichloroaceticacid
Arsenic
Perfluoroheptanoicacid (PFHPA)
Perfluorobutanoicacid (PFBA)
Perfluoropentanoicacid (PFPEA)
Odor
Vanadium, Total
Aluminum
Color
Combined Uranium
Carbon, Total
Temperature (CENTIGRADE)
Antimony, Total
Langelier Index (Source Temp.)
PFOA
PFHXS
PFHXA
Perfluoropentanesulfonicacid (PFPES)
Silica
PFBS
Orthophosphate
Lead
Barium
Radon
Tritium
Gross Beta Particle Activity
Bromide
Nitrite
Radium-226

Violations on file

Nitrate

Older/archived health-based violation

Found at 7 of 179 providers

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

Selenium

Older/archived health-based violation

Found at 11 of 179 providers

Combined Uranium

Older/archived health-based violation

Found at 1 of 179 providers

A naturally occurring radioactive metal. Long-term exposure above the legal limit is associated with kidney effects and increased cancer risk.

Lead And Copper Rule Revisions

Currently open health violation

Found at 17 of 179 providers

Surface Water Treatment Rule

Older/archived health-based violation

Found at 1 of 179 providers

TTHM

Older/archived health-based violation

Found at 1 of 179 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.

Contaminants found

Metals

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

Lead Summary

Detected: 0.0222 mg/L (ppm)

Found at 103 providers

Copper Summary

Detected: 287 mg/L (ppm)

Found at 14 providers

Manganese

Detected: 700 UG/L (ppb)

Found at 40 providers

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

Copper, Free

Detected: 1260 UG/L (ppb)

Found at 23 providers

Iron

Detected: 1310 UG/L (ppb)

Found at 28 providers

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

Chromium

Detected: 35 UG/L (ppb)

Found at 17 providers

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

Zinc

Detected: 640 UG/L (ppb)

Found at 26 providers

Chromium, Hex

Detected: 4 UG/L (ppb)

Found at 12 providers

Selenium

Detected: 176 UG/L (ppb)

Found at 16 providers

Arsenic

Detected: 39 UG/L (ppb)

Found at 9 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.

Vanadium, Total

Detected: 8 UG/L (ppb)

Found at 9 providers

Aluminum

Detected: 60 UG/L (ppb)

Found at 3 providers

Combined Uranium

Detected: 16.2 PCI/L

Found at 10 providers

A naturally occurring radioactive metal. Long-term exposure above the legal limit is associated with kidney effects and increased cancer risk.

Antimony, Total

Detected: 8 UG/L (ppb)

10/20/2025

Lead

Detected: 8 UG/L (ppb)

Found at 3 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.

Barium

Detected: 101 UG/L (ppb)

1/7/2025

Disinfection Byproducts

Formed when chlorine used to disinfect water reacts with organic matter

Totalhaloaceticacids (HAA5)

Detected: 47 UG/L (ppb)

Found at 36 providers

TTHM

Detected: 69 UG/L (ppb)

Found at 58 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: 34 UG/L (ppb)

Found at 58 providers

Bromodichloromethane

Detected: 10 UG/L (ppb)

Found at 55 providers

Dibromochloromethane

Detected: 27 UG/L (ppb)

Found at 62 providers

Chloroform

Detected: 27 UG/L (ppb)

Found at 38 providers

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

Dibromomethane

Detected: 0.5 UG/L (ppb)

5/5/2025

Inorganics

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

Nitrate

Detected: 15 MG/L (ppm)

Found at 49 providers

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

Chloride

Detected: 19000 MG/L (ppm)

Found at 40 providers

Sulfate

Detected: 2660 MG/L (ppm)

Found at 46 providers

Fluoride

Detected: 1 MG/L (ppm)

Found at 37 providers

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

Boron, Total

Detected: 3400 UG/L (ppb)

Found at 33 providers

Nitrate-Nitrite

Detected: 7.2 MG/L (ppm)

Found at 25 providers

Nitrite

Detected: 0.74 MG/L (ppm)

2/18/2025

Minerals

Everyday minerals that mainly affect taste and water hardness

Magnesium

Detected: 1130 MG/L (ppm)

Found at 40 providers

Potassium

Detected: 334 MG/L (ppm)

Found at 37 providers

Sodium

Detected: 12300 MG/L (ppm)

Found at 38 providers

Calcium

Detected: 309 MG/L (ppm)

Found at 40 providers

Properties

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

Langelier Index (pH(s))

Detected: 1 LANG

Found at 40 providers

Hardness, Total (ASCACO3)

Detected: 5420 MG/L (ppm)

Found at 40 providers

Gross Alpha Particle Activity

Detected: 20.2 PCI/L

Found at 18 providers

pH, Field

Detected: 8.17 PH

Found at 41 providers

Detected: 7.5 PH

Found at 5 providers

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

Orthophosphate

Detected: 0.74 MG/L (ppm)

7/21/2025

PFAS & Emerging Contaminants

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

Lithium

Detected: 58 µg/L (ppb)

Found at 18 providers

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

PFOS

Detected: 0.017 µg/L (ppb)

Found at 2 providers

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

PFBA

Detected: 0.013 µg/L (ppb)

Found at 2 providers

PFOA

Detected: 0.0101 µg/L (ppb)

1/31/2024

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

PFHXS

Detected: 0.0087 µg/L (ppb)

Found at 2 providers

PFHXA

Detected: 0.0041 µg/L (ppb)

10/9/2023

PFBS

Detected: 0.0031 µg/L (ppb)

1/26/2023

VOCs (Volatile Organic Compounds)

Industrial solvents and fuel-related chemicals that evaporate easily

Tetrachloroethylene

Detected: 1 UG/L (ppb)

10/7/2025

Bromide

Detected: 0.22 MG/L (ppm)

8/7/2025

Calculated Parameters

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

Alkalinity, Bicarbonate

Detected: 380 MG/L (ppm)

Found at 40 providers

Other

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

Dibromoaceticacid

Detected: 10 UG/L (ppb)

Found at 58 providers

Aggressive Index

Detected: 13 AGGR

Found at 40 providers

Alkalinity, Total

Detected: 310 MG/L (ppm)

Found at 41 providers

TDS

Detected: 36900 MG/L (ppm)

Found at 46 providers

Turbidity

Detected: 13 NTU

Found at 33 providers

A measure of water cloudiness from suspended particles.

Conductivity (at 25°C)

Detected: 51600 UMHO/CM

Found at 44 providers

Perchlorate

Detected: 4.2 UG/L (ppb)

Found at 3 providers

Can occur naturally or from industrial/military sources; may interfere with thyroid function at elevated levels.

Monobromoaceticacid

Detected: 2 UG/L (ppb)

Found at 9 providers

Dichloroaceticacid

Detected: 17 UG/L (ppb)

Found at 31 providers

Perfluorobutanesulfonicacid (PFBS)

Detected: 7.6 NG/L (ppt)

Found at 11 providers

Perfluorohexanoicacid (PFHXA)

Detected: 21 NG/L (ppt)

Found at 7 providers

Perfluoroctanoicacid (PFOA)

Detected: 21 NG/L (ppt)

Found at 7 providers

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

Perfluoroctanesulfonicacid (PFOS)

Detected: 21 NG/L (ppt)

Found at 12 providers

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

Perfluorohexanesulfonicacid (PFHxS)

Detected: 6.9 NG/L (ppt)

Found at 8 providers

Perfluorononanoicacid (PFNA)

Detected: 2.2 NG/L (ppt)

5/5/2025

Radium-228

Detected: 0.98 PCI/L

Found at 10 providers

Combined Radium (-226 & -228)

Detected: 0.53 PCI/L

Found at 2 providers

A naturally occurring radioactive element found in some groundwater.

Adsorbableorganicfluorine

Detected: 1300 NG/L (ppt)

Found at 3 providers

Monochloroaceticacid

Detected: 10 UG/L (ppb)

Found at 15 providers

Trichloroaceticacid

Detected: 25 UG/L (ppb)

Found at 23 providers

Perfluoroheptanoicacid (PFHPA)

Detected: 6.4 NG/L (ppt)

Found at 2 providers

Perfluorobutanoicacid (PFBA)

Detected: 8.5 NG/L (ppt)

Found at 9 providers

Perfluoropentanoicacid (PFPEA)

Detected: 20 NG/L (ppt)

Found at 6 providers

Odor

Detected: 32 TON

Found at 3 providers

Color

Detected: 14 UNITS

Found at 6 providers

Carbon, Total

Detected: 2.8 MG/L (ppm)

Found at 4 providers

Temperature (CENTIGRADE)

Detected: 21.2 C

Found at 4 providers

Langelier Index (Source Temp.)

Detected: -0.56 LANG

10/15/2025

Perfluoropentanesulfonicacid (PFPES)

Detected: 2.2 NG/L (ppt)

1/16/2025

Silica

Detected: 28 MG/L (ppm)

5/14/2025

Radon

Detected: 136 PCI/L

2/18/2025

Tritium

Detected: 439 PCI/L

1/9/2025

Gross Beta Particle Activity

Detected: 5.67 PCI/L

8/7/2025

Radium-226

Detected: 0.38 PCI/L

1/2/2025

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
Dibromomethane	Yes	Yes	Yes
Bromide	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
Manganese	Partial	Yes	Partial
Dibromoaceticacid	Partial	Yes	Partial
Copper, Free	Partial	Yes	Partial
Aggressive Index	Partial	Yes	Partial
Alkalinity, Total	Partial	Yes	Partial
TDS	Partial	Yes	Partial
Chloride	Partial	Yes	Partial
Sulfate	Partial	Yes	Partial
Fluoride	Partial	Yes	Partial
Boron, Total	Partial	Yes	Partial
Iron	Partial	Yes	Partial
Chromium	Partial	Yes	Partial
Zinc	Partial	Yes	Partial
Conductivity (at 25°C)	Partial	Yes	Partial
Lithium	Partial	Yes*	Partial
Chromium, Hex	Partial	Yes	Partial
Perchlorate	Partial	Yes	Partial
Selenium	Partial	Yes	Partial
Monobromoaceticacid	Partial	Yes	Partial
Dichloroaceticacid	Partial	Yes	Partial
PFBA	Partial	Yes*	Partial
Perfluorobutanesulfonicacid (PFBS)	Partial	Yes	Partial
Perfluorohexanoicacid (PFHXA)	Partial	Yes	Partial
Perfluoroctanoicacid (PFOA)	Partial	Yes	Partial
Perfluoroctanesulfonicacid (PFOS)	Partial	Yes	Partial
Perfluorohexanesulfonicacid (PFHxS)	Partial	Yes	Partial
Perfluorononanoicacid (PFNA)	Partial	Yes	Partial
Combined Radium (-226 & -228)	Partial	Yes	Partial
Nitrate-Nitrite	Partial	Yes	Partial
Adsorbableorganicfluorine	Partial	Yes	Partial
Monochloroaceticacid	Partial	Yes	Partial
Trichloroaceticacid	Partial	Yes	Partial
Perfluoroheptanoicacid (PFHPA)	Partial	Yes	Partial
Perfluorobutanoicacid (PFBA)	Partial	Yes	Partial
Perfluoropentanoicacid (PFPEA)	Partial	Yes	Partial
Odor	Partial	Yes	Partial
Vanadium, Total	Partial	Yes	Partial
Aluminum	Partial	Yes	Partial
Color	Partial	Yes	Partial
Combined Uranium	Partial	Yes	Partial
Carbon, Total	Partial	Yes	Partial
Temperature (CENTIGRADE)	Partial	Yes	Partial
Antimony, Total	Partial	Yes	Partial
Langelier Index (Source Temp.)	Partial	Yes	Partial
PFHXS	Partial	Yes*	Partial
PFHXA	Partial	Yes*	Partial
Perfluoropentanesulfonicacid (PFPES)	Partial	Yes	Partial
Silica	Partial	Yes	Partial
PFBS	Partial	Yes*	Partial
Barium	Partial	Yes	Partial
Radon	Partial	Yes	Partial
Tritium	Partial	Yes	Partial
Gross Beta Particle Activity	Partial	Yes	Partial
Nitrite	Partial	Yes	Partial
Radium-226	Partial	Yes	Partial
Coliform Bacteria (indicator)	No	Yes	No
Langelier Index (pH(s))	No	No	No
Magnesium	No	Partial	No
Potassium	No	Partial	No
Sodium	No	Partial	No
Hardness, Total (ASCACO3)	No	No	No
Calcium	No	Partial	No
Alkalinity, Bicarbonate	No	No	No
Gross Alpha Particle Activity	No	No	No
pH, Field	No	No	No
pH	No	No	No
Orthophosphate	No	No	No

Browse by city

Individual water providers

OXNARD WATER DEPT No violations on file — pop. 200,232
VENTURA WATER DEPARTMENT No violations on file — pop. 113,500
VENTURA WWD NO. 8 - SIMI VALLEY Older violation on record — pop. 94,738
CAL AMERICAN WATER CO No violations on file — pop. 66,809
CITY OF THOUSAND OAKS WATER DEPARTMENT No violations on file — pop. 53,157
CAMARILLO WATER DEPT No violations on file — pop. 46,824
GOLDEN STATE WATER COMPANY - SIMI VALLEY No violations on file — pop. 45,128
VENTURA CWWD NO. 1 - MOORPARK No violations on file — pop. 35,514
CAMROSA WATER DISTRICT No violations on file — pop. 32,700
CITY OF SANTA PAULA No violations on file — pop. 31,018
PORT HUENEME CITY WATER DEPT No violations on file — pop. 21,407
CALIFORNIA WATER SERVICE CO - WESTLAKE No violations on file — pop. 19,533

FILLMORE WATER DEPT No violations on file — pop. 16,419
TRIUNFO WATER & SANITATION DISTRICT No violations on file — pop. 13,898
CASITAS MUNICIPAL WATER DIST No violations on file — pop. 11,005
NAVAL BASE VENTURA COUNTY, PORT HUENEME No violations on file — pop. 8,625
OJAI WATER SYSTEM No violations on file — pop. 6,801
VENTURA RIVER WATER DISTRICT No violations on file — pop. 6,100
CAMARILLO STATE HOSPITAL No violations on file — pop. 6,000
CAMARILLO STATE HOSPITAL No violations on file — pop. 6,000
NAVAL BASE VENTURA COUNTY, POINT MUGU No violations on file — pop. 5,700
PLEASANT VALLEY MUTUAL WATER CO No violations on file — pop. 5,000
CHANNEL ISLANDS BEACH CSD No violations on file — pop. 4,560
MEINERS OAKS CWD No violations on file — pop. 4,200
SMITH FORKS WATER SYSTEM No violations on file — pop. 3,000
RIO MESA HIGH SCHOOL/OXNARD UHS Open violation — pop. 2,600
CRESTVIEW MUTUAL WATER CO No violations on file — pop. 2,079
CAL AMERICAN WC - LAS POSAS ESTATES No violations on file — pop. 2,039
CAL AMERICAN WATER COMPANY - PIRU No violations on file — pop. 2,003
VENTURA CWWD NO. 17 - BELL CANYON No violations on file — pop. 1,946
VINEYARD AVENUE ACRES MWC Open violation — pop. 1,820
VENTURA CWWD NO. 38 - LAKE SHERWOOD No violations on file — pop. 1,759
CAL AMERICAN WC - RIO PLAZA No violations on file — pop. 1,709
VENTURA CWWD NO. 19 - SOMIS No violations on file — pop. 1,429
GARDEN ACRES MUTUAL WATER CO Older violation on record — pop. 1,335
CAMARILLO AIRPORT UTILITY No violations on file — pop. 1,240
VINEYARD AVE ESTATES MWC Open violation — pop. 1,200
LIMONEIRA RANCH #1 No violations on file — pop. 1,187
DEMPSEY ROAD MUTUAL WATER CO No violations on file — pop. 990
CASITAS MUNICIPAL WATER DIST. Older violation on record — pop. 983 — serves MIRA MONTE
RIO MANOR MUTUAL WATER CO No violations on file — pop. 983
NYELAND ACRES MUTUAL WATER CO Older violation on record — pop. 975
LAKE PIRU PARK - UWCD No violations on file — pop. 960
VENTURA SCHOOL No violations on file — pop. 882
VENTURA SCHOOL No violations on file — pop. 862
RIO SCHOOL DIST/RIO DEL VALLE SCHOOL No violations on file — pop. 820
SENIOR CANYON MUTUAL WATER CO No violations on file — pop. 800
CAL AMERICAN - YERBA BUENA No violations on file — pop. 690
BRANDEIS BARDIN INSTITUTE No violations on file — pop. 665
VENTURA BOYSCOUT COUNCIL No violations on file — pop. 650
RANCHO SESPE WORKERS IMP ASSOC No violations on file — pop. 600
GLASS HOUSE CAMARILLO CULTIVATION, LLC No violations on file — pop. 600
RIO SCHOOL DIST/ RIO REAL SCHOOL No violations on file — pop. 550
RANCHO SESPE No violations on file — pop. 500
USFS - WHEELER GORGE CAMPGROUND No violations on file — pop. 500
THOMAS AQUINAS COLLEGE No violations on file — pop. 472
CLOVERDALE MUTUAL WATER CO. No violations on file — pop. 455
STRICKLAND MUTUAL WATER COMPANY No violations on file — pop. 429
OCEAN VIEW SCHOOL No violations on file — pop. 412
LAGUNA VISTA SCHOOL/OCEANVIEW SCHOOL DIS No violations on file — pop. 404
EL RIO MUTUAL WATER COMPANY Older violation on record — pop. 400
RAYTHEON COMPANY No violations on file — pop. 400
LAKE SHERWOOD No violations on file — pop. 400
SAVIERS ROAD MUTUAL WATER CO No violations on file — pop. 368
FILLMORE IRRIGATION CO No violations on file — pop. 353
SISAR MUTUAL WATER CO No violations on file — pop. 340
SIETE ROBLES MUTUAL WATER CO Open violation — pop. 323
WILSHIRE BLVD TEMPLE CAMPS/CAMP HESS KRA No violations on file — pop. 300
ACADEMY MUTUAL WATER CO Older violation on record — pop. 300
CAMARILLO HIGH SCHOOL No violations on file — pop. 300
RANCHITOS MUTUAL WATER CO Older violation on record — pop. 267
VINEYARD MUTUAL WATER COMPANY/INDUSTRIAL No violations on file — pop. 259
U.S.N., SAN NICOLAS ISLAND No violations on file — pop. 254
CASITAS MUTUAL WATER COMPANY Open violation — pop. 238
CYPRESS MUTUAL WATER CO INC No violations on file — pop. 224
DEL NORTE MUTUAL WATER CO. Open violation — pop. 215
SAM EDWARDS ASSOC No violations on file — pop. 201
U S FOREST SERVICE No violations on file — pop. 200
SATICOY COUNTRY CLUB-CITY OF VENTURA Older violation on record — pop. 196 — serves VENTURA
VALLEY TRAILER COURT Older violation on record — pop. 170
SIESTA MOBILE HOME PARK Open violation — pop. 160
NAVALAIR MOBILE HOME PARK Open violation — pop. 160
EL RIO SERVICE CENTER No violations on file — pop. 150
ELKINS RANCH Open violation — pop. 150
MIDDLE ROAD MUTUAL WATER CO No violations on file — pop. 134
SILVER WHEEL TRAILER PARK No violations on file — pop. 120
FOXFIELD RIDING SCHOOL No violations on file — pop. 120
CHRISTENSEN COURT Older violation on record — pop. 114
THE RANCH AT LIVE OAK Open violation — pop. 109
VENTURA COUNTY WATER DISTRICT No violations on file — pop. 103
DENNISON PARK No violations on file — pop. 102
COMPTON HUNTING & FISHING CLUB No violations on file — pop. 100
CONSERVATION ENDOWMENT FUND No violations on file — pop. 100
SOLANO VERDE MUTUAL WATER CO No violations on file — pop. 100
BOUQUET MULTIMEDIA No violations on file — pop. 100
VENTURA FARMS No violations on file — pop. 100
ALTURAS FILLMORE MHP No violations on file — pop. 99
VENTURA COUNTY WATER DISTRICT No violations on file — pop. 93
NISHI QUALITY FLOWERS, INC. Open violation — pop. 92
CABRILLO VILLAGE No violations on file — pop. 90
ARROYO MOBILE HOME PARK No violations on file — pop. 88
OCEANAIRE MOBILE HOME No violations on file — pop. 86
PROTOTYPES WOMEN'S CENTER No violations on file — pop. 75
YERBA BUENA WATER COMPANY No violations on file — pop. 75
PLAZA MOBILE HOME PARK Older violation on record — pop. 74
TICO MUTUAL WATER CO Older violation on record — pop. 72
EVERGREEN TRAILER PARK Older violation on record — pop. 70
LINDA VISTA ADVENTIST ELEMENTARY SCHOOL No violations on file — pop. 70
BUENAVENTURA LEMON No violations on file — pop. 65
COMMUNITY MUTUAL WATER CO No violations on file — pop. 65
HANSON AGGREGATES WEST No violations on file — pop. 60
CASA TROPICAL No violations on file — pop. 60
GOLDEN OAKS MOBILE ESTATE No violations on file — pop. 58
SOUTH MOUNTAIN MUTUAL WATER CO No violations on file — pop. 58
CIRCLE B RANCH No violations on file — pop. 50
H & H OIL TOOL COMPANY No violations on file — pop. 50
USFS - MCGILL CAMPGROUND No violations on file — pop. 50
ESTERINA PROPERTIES Open violation — pop. 50
VULCAN MATERIALS COMPANY - CAL MAT Open violation — pop. 50
GP ANACAPA FOODS, LLC. No violations on file — pop. 50
HERMITAGE MUTUAL WATER CO No violations on file — pop. 45
SAN CAYETANO MUTUAL WATER CO No violations on file — pop. 43
NEW CAMP BARTLETT No violations on file — pop. 40
RISSMAN MUTUAL WATER CO No violations on file — pop. 40
SANTA CLARA SCHOOL No violations on file — pop. 39
THERMIC MUTUAL WATER CO No violations on file — pop. 38
OXNARD PALLET COMPANY No violations on file — pop. 38
LIMONEIRA CO. - MCKEVETT No violations on file — pop. 36
SUN VALLEY GROUP No violations on file — pop. 35 — serves VENTURA
TENBY WATER SYSTEM No violations on file — pop. 35
BEEDY WATER COMPANY, LLC No violations on file — pop. 35
HAILWOOD INC WATER SYSTEM NO. 8-INACTIVE No violations on file — pop. 30
ALISO MUTUAL WATER COMPANY No violations on file — pop. 30
STECKLE PARK No violations on file — pop. 30
EMMAWOOD STATE BEACH No violations on file — pop. 30
EL RIO PROCESSING No violations on file — pop. 30
CHANNEL ISLANDS NATIONAL PARK No violations on file — pop. 30
KROTONA INSTITUTE Open violation — pop. 30
PYRAMID FLOWERS No violations on file — pop. 30
SANTA CLARA RESOURCES Older violation on record — pop. 30
BROWNSTONE WATER CO No violations on file — pop. 26
USFS - CHUCHUPATE RANGER STATION Open violation — pop. 26
BEEF BARN No violations on file — pop. 25
NPS CHANNEL ISLANDS NAT. PARK No violations on file — pop. 25 — serves SANTA BARBARA I
U.S.N., SANTA CRUZ ISLAND No violations on file — pop. 25
CAMP WHITTIER No violations on file — pop. 25
OZENA CAMPGROUND AND STATION No violations on file — pop. 25
CHUCHUPATE CAMPGROUND No violations on file — pop. 25
USFS - HARD LUCK CAMPGROUND No violations on file — pop. 25
WHITE STALLION No violations on file — pop. 25
STATE READY MIX, INC. Open violation — pop. 25 — serves VENTURA
RINCON WATER & ROAD WORKS No violations on file — pop. 25
WATERS ROAD DOMESTIC USERS GROUP No violations on file — pop. 25
PINE MOUNTAIN INN WATER SYSTEM No violations on file — pop. 25
LLOYD-BUTLER MUTUAL WATER COMPANY No violations on file — pop. 24
SANTA MONICA MT. REC AREA - CIRCLE X No violations on file — pop. 24
FULLER FALLS MUTUAL WATER CO No violations on file — pop. 23
TEAL CLUB MUTUAL WATER CO No violations on file — pop. 18
CAMP SCHEIDECK Open violation — pop. 15
CHANNEL ISLANDS NATIONAL PARK No violations on file — pop. 10
AHRENS AIRCRAFT No violations on file — pop. 10
RIO SCHOOL DIST/ EL RIO SCHOOL No violations on file — pop. 9
RCA GLOBAL No violations on file — pop. 8
VENTURA COUNTY HUMANE SOCIETY No violations on file — pop. 5
UNOCAL WATER SYSTEM No violations on file — pop. 5
MCGRATH No violations on file — pop. 5
DALE & FRANCIS BASTYNE No violations on file — pop. 4
RANCHO LA CUESTA LIMITED No violations on file — pop. 4
OWL'S BARN WATER SYSTEM No violations on file — pop. 4
SHERWIN ACRES MUTUAL WATER CO No violations on file — pop. 0
USFS - BLUE POINT CAMPGROUND No violations on file — pop. 0
USFS - LIONS CANYON CAMPGROUND No violations on file — pop. 0
ROYAL DUKE MOBILE ESTATE Older violation on record — pop. 0
LAS POSAS ORCHARD/SOMIS PACIFIC MGMNT. No violations on file — pop. 0
NAVAL BASE VENTURA COUNTY-CAMARILLO HSG. No violations on file — pop. 0
PORT HUENEME WATER AGENCY No violations on file — pop. 0
UNITED WTR CONS DIST No violations on file — pop. 0
CALLEGUAS MUNICIPAL WATER DIST No violations on file — pop. 0
CONEJO WATER SYSTEM No violations on file — pop. 0

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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?

Ventura County, CA Water Quality Report

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