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Results for Mariposa County, CA

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

Quick answer: Mariposa County has 198 water providers profiled, sorted by population served.

Lead Summary
Chloride
Nitrate
Turbidity
Magnesium
Calcium
Hardness, Total (ASCACO3)
Iron
Manganese
Copper Summary
Lead
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Monochloroaceticacid
Copper, Free
Perfluorobutanesulfonicacid (PFBS)
Perfluoroheptanoicacid (PFHPA)
Perfluorohexanesulfonicacid (PFHxS)
Perfluoroctanesulfonicacid (PFOS)
Perfluoroctanoicacid (PFOA)
Perfluorohexanoicacid (PFHXA)
Perfluorobutanoicacid (PFBA)
Perfluoropentanoicacid (PFPEA)
Perfluoropentanesulfonicacid (PFPES)
Gross Alpha Particle Activity
Chromium, Hex
Aggressive Index
Langelier Index (pH(s))
Sodium
Alkalinity, Total
Alkalinity, Bicarbonate
Carbon, Total
TDS
Sulfate
pH
Aluminum
Conductivity (at 25°C)
Color
Lithium
Fluoride
Odor
Mercury
Chromium
Arsenic
Zinc
Combined Uranium
Totalradiumforntncper§64442(B) (3)
Nickel
Barium
Bromoform
Temperature (CENTIGRADE)
Potassium
Foamingagents (SURFACTANTS)
Tetrachloroethylene

Violations on file

Coliform (TCR)

Older/archived health-based violation

Found at 3 of 198 providers

Lead And Copper Rule Revisions

Currently open health violation

Found at 3 of 198 providers

Contaminants found

Metals

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

Lead Summary

Detected: 0.092 mg/L (ppm)

Found at 31 providers

Iron

Detected: 4460 UG/L (ppb)

Found at 9 providers

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

Manganese

Detected: 600 UG/L (ppb)

Found at 10 providers

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

Copper Summary

Detected: 5.1 mg/L (ppm)

Found at 7 providers

Lead

Detected: 13 UG/L (ppb)

Found at 4 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: 201 UG/L (ppb)

Found at 7 providers

Chromium, Hex

Detected: 0.35 UG/L (ppb)

Found at 8 providers

Aluminum

Detected: 210 UG/L (ppb)

Found at 4 providers

Mercury

Detected: 0.69 UG/L (ppb)

Found at 2 providers

Chromium

Detected: 2 UG/L (ppb)

Found at 3 providers

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

Arsenic

Detected: 31 UG/L (ppb)

Found at 7 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.

Zinc

Detected: 950 UG/L (ppb)

Found at 2 providers

Combined Uranium

Detected: 14 PCI/L

Found at 2 providers

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

Nickel

Detected: 1.4 UG/L (ppb)

Found at 2 providers

Barium

Detected: 4.8 UG/L (ppb)

Found at 2 providers

Disinfection Byproducts

Formed when chlorine used to disinfect water reacts with organic matter

Totalhaloaceticacids (HAA5)

Detected: 26.7 UG/L (ppb)

Found at 5 providers

TTHM

Detected: 49.38 UG/L (ppb)

Found at 8 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.

Chloroform

Detected: 46.6 UG/L (ppb)

Found at 8 providers

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

Bromodichloromethane

Detected: 6.6 UG/L (ppb)

Found at 8 providers

Dibromochloromethane

Detected: 3.4 UG/L (ppb)

Found at 4 providers

Bromoform

Detected: 1.9 UG/L (ppb)

Found at 2 providers

Inorganics

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

Chloride

Detected: 60 MG/L (ppm)

Found at 8 providers

Nitrate

Detected: 4.8 MG/L (ppm)

Found at 11 providers

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

Sulfate

Detected: 13 MG/L (ppm)

Found at 5 providers

Fluoride

Detected: 0.66 MG/L (ppm)

Found at 3 providers

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

Minerals

Everyday minerals that mainly affect taste and water hardness

Magnesium

Detected: 40 MG/L (ppm)

Found at 11 providers

Calcium

Detected: 62 MG/L (ppm)

Found at 11 providers

Sodium

Detected: 54 MG/L (ppm)

Found at 7 providers

Potassium

Detected: 2.19 MG/L (ppm)

5/28/2025

Properties

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

Hardness, Total (ASCACO3)

Detected: 300 MG/L (ppm)

Found at 11 providers

Gross Alpha Particle Activity

Detected: 12.2 PCI/L

Found at 7 providers

Langelier Index (pH(s))

Detected: -0.21 LANG

Found at 2 providers

Detected: 8.1 PH

Found at 7 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

Lithium

Detected: 108 µg/L (ppb)

7/29/2025

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

VOCs (Volatile Organic Compounds)

Industrial solvents and fuel-related chemicals that evaporate easily

Tetrachloroethylene

Detected: 1.9 UG/L (ppb)

9/4/2025

Calculated Parameters

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

Alkalinity, Bicarbonate

Detected: 220 MG/L (ppm)

Found at 8 providers

Other

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

Turbidity

Detected: 1.1 NTU

Found at 6 providers

A measure of water cloudiness from suspended particles.

Dichloroaceticacid

Detected: 14.3 UG/L (ppb)

Found at 3 providers

Trichloroaceticacid

Detected: 12 UG/L (ppb)

Found at 5 providers

Monochloroaceticacid

Detected: 4 UG/L (ppb)

Found at 2 providers

Perfluorobutanesulfonicacid (PFBS)

Detected: 3 NG/L (ppt)

10/6/2025

Perfluoroheptanoicacid (PFHPA)

Detected: 2.5 NG/L (ppt)

10/6/2025

Perfluorohexanesulfonicacid (PFHxS)

Detected: 6.6 NG/L (ppt)

10/6/2025

Perfluoroctanesulfonicacid (PFOS)

Detected: 12 NG/L (ppt)

10/6/2025

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

Perfluoroctanoicacid (PFOA)

Detected: 5 NG/L (ppt)

10/6/2025

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

Perfluorohexanoicacid (PFHXA)

Detected: 5.2 NG/L (ppt)

10/6/2025

Perfluorobutanoicacid (PFBA)

Detected: 2.4 NG/L (ppt)

10/6/2025

Perfluoropentanoicacid (PFPEA)

Detected: 5.8 NG/L (ppt)

10/6/2025

Perfluoropentanesulfonicacid (PFPES)

Detected: 4.2 NG/L (ppt)

9/3/2025

Aggressive Index

Detected: 11.8 AGGR

Found at 3 providers

Alkalinity, Total

Detected: 220 MG/L (ppm)

Found at 8 providers

Carbon, Total

Detected: 3.9 MG/L (ppm)

8/28/2025

TDS

Detected: 260 MG/L (ppm)

Found at 6 providers

Conductivity (at 25°C)

Detected: 399 UMHO/CM

Found at 7 providers

Color

Detected: 10 UNITS

Found at 4 providers

Odor

Detected: 1 TON

Found at 3 providers

Totalradiumforntncper§64442(B) (3)

Detected: 0.17 PCI/L

2/18/2025

Temperature (CENTIGRADE)

Detected: 25 C

5/28/2025

Foamingagents (SURFACTANTS)

Detected: 0.86 MG/L (ppm)

5/28/2025

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
Chloride	Partial	Yes	Partial
Iron	Partial	Yes	Partial
Manganese	Partial	Yes	Partial
Dichloroaceticacid	Partial	Yes	Partial
Trichloroaceticacid	Partial	Yes	Partial
Monochloroaceticacid	Partial	Yes	Partial
Copper, Free	Partial	Yes	Partial
Perfluorobutanesulfonicacid (PFBS)	Partial	Yes	Partial
Perfluoroheptanoicacid (PFHPA)	Partial	Yes	Partial
Perfluorohexanesulfonicacid (PFHxS)	Partial	Yes	Partial
Perfluoroctanesulfonicacid (PFOS)	Partial	Yes	Partial
Perfluoroctanoicacid (PFOA)	Partial	Yes	Partial
Perfluorohexanoicacid (PFHXA)	Partial	Yes	Partial
Perfluorobutanoicacid (PFBA)	Partial	Yes	Partial
Perfluoropentanoicacid (PFPEA)	Partial	Yes	Partial
Perfluoropentanesulfonicacid (PFPES)	Partial	Yes	Partial
Chromium, Hex	Partial	Yes	Partial
Aggressive Index	Partial	Yes	Partial
Alkalinity, Total	Partial	Yes	Partial
Carbon, Total	Partial	Yes	Partial
TDS	Partial	Yes	Partial
Sulfate	Partial	Yes	Partial
Aluminum	Partial	Yes	Partial
Conductivity (at 25°C)	Partial	Yes	Partial
Color	Partial	Yes	Partial
Lithium	Partial	Yes*	Partial
Fluoride	Partial	Yes	Partial
Odor	Partial	Yes	Partial
Mercury	Partial	Yes	Partial
Chromium	Partial	Yes	Partial
Zinc	Partial	Yes	Partial
Combined Uranium	Partial	Yes	Partial
Totalradiumforntncper§64442(B) (3)	Partial	Yes	Partial
Nickel	Partial	Yes	Partial
Barium	Partial	Yes	Partial
Temperature (CENTIGRADE)	Partial	Yes	Partial
Foamingagents (SURFACTANTS)	Partial	Yes	Partial
Coliform Bacteria (indicator)	No	Yes	No
Magnesium	No	Partial	No
Calcium	No	Partial	No
Hardness, Total (ASCACO3)	No	No	No
Gross Alpha Particle Activity	No	No	No
Langelier Index (pH(s))	No	No	No
Sodium	No	Partial	No
Alkalinity, Bicarbonate	No	No	No
pH	No	No	No
Potassium	No	Partial	No

Individual water providers

YOSEMITE NPS-GLACIER POINT No violations on file — pop. 4,000
BLM-BRICEBURG WATER SYSTEM No violations on file — pop. 3,196
YOSEMITE NPS - VERNAL FALLS No violations on file — pop. 3,000
MARIPOSA PUBLIC UTILITY DIST No violations on file — pop. 2,000
YOSEMITE NPS-BRIDALVEIL FALL No violations on file — pop. 1,163
MID - MC SWAIN REC AREA No violations on file — pop. 1,119
BARRETT COVE REC AREA No violations on file — pop. 1,000
MC SWAIN REC AREA No violations on file — pop. 1,000
BAGBY RECREATIONAL AREA No violations on file — pop. 1,000
MARIPOSA COUNTY FAIRGROUND No violations on file — pop. 1,000
YOSEMITE NPS-YOSEMITE VALLEY No violations on file — pop. 1,000
YOSEMITE NPS-BADGER PASS No violations on file — pop. 1,000

HORSESHOE BEND REC AREA No violations on file — pop. 900
DELAWARE NORTH PARKS SERVICES AT TENAYA No violations on file — pop. 800
PONDEROSA BASIN MUTUAL WTR CO No violations on file — pop. 798
YOSEMITE VIEW LODGE No violations on file — pop. 750
CEDAR LODGE No violations on file — pop. 656
YOSEMITE NPS-EL PORTAL No violations on file — pop. 635
GREENAMYERS BROS WATER SYS No violations on file — pop. 500
FRANK LEMELIN No violations on file — pop. 500
MC CLURE POINT REC AREA No violations on file — pop. 500
GREENAMEYER BROTHERS WATER SY No violations on file — pop. 500
CEDAR LODGE No violations on file — pop. 500
YOSEMITE NPS-CRANE FLAT No violations on file — pop. 500
MID - MC CLURE POINT REC AREA No violations on file — pop. 470
MCUSD - WOODLAND ELEMENTARY SCHOOL No violations on file — pop. 466
YOSEMITE NPS-BRIDALVEIL CREEK CG No violations on file — pop. 450
YOSEMITE WEST WATER SYSTEM No violations on file — pop. 420
MID - BARRETT COVE No violations on file — pop. 407
REDWOODS WATER SYSTEM No violations on file — pop. 400
REDWOODS WATER SYSTEM No violations on file — pop. 400
COULTERVILLE COUNTY SERVICE No violations on file — pop. 300
YOSEMITE NPS-MAY LAKE CAMP No violations on file — pop. 300
AUTOCAMP-YOSEMITE No violations on file — pop. 290
MCCLURE BOAT CLUB, INC. No violations on file — pop. 286
MARIPOSA PINES MUTUAL Open violation — pop. 284
THE COTTAGES AT TENAYA LODGE No violations on file — pop. 265
WOODLAND ELEMENTARY SCHOOL No violations on file — pop. 255
WOODLAND ELEMENTARY SCHOOL No violations on file — pop. 255
SHORE FUN RECREATION AREA No violations on file — pop. 250
MCPR-CATHEY S VALLEY PARK No violations on file — pop. 250
KOA CAMPGROUND No violations on file — pop. 240
FISHCAMP MUTUAL WATER COMPANY No violations on file — pop. 239
CAMP WAWONA No violations on file — pop. 222
FISHCAMP MUTUAL WATER SYSTEM No violations on file — pop. 210
FISHCAMP MUTUAL WATER SYSTEM No violations on file — pop. 210
LAKE MC CLURE BOAT CLUB MHP No violations on file — pop. 200
EL PORTAL WATER SYSTEM No violations on file — pop. 200
RONALD HISER No violations on file — pop. 200
YOSEMITE WEST No violations on file — pop. 200
MARIPOSA PINES MUTUAL WATER CO No violations on file — pop. 200
MARIPOSA UNIFIED SCHOOL DIST No violations on file — pop. 200
MARIPOSA DISTRICT FAIRGROUND No violations on file — pop. 200
YOSEMITE NPS-ARCH ROCK No violations on file — pop. 200
NEW LIFE CHRISTIAN FELLOWSHIP No violations on file — pop. 200
MPWD-COULTERVILLE CSA 1 No violations on file — pop. 193
SEVEN DAY ADVENTIST CAMP No violations on file — pop. 175
SUMMERDALE CAMPGROUND No violations on file — pop. 175
YOSEMITE VIEW LODGE No violations on file — pop. 168
GREEN MEADOWS OUTDOOR SCHOOL No violations on file — pop. 160
MCUSD - SIERRA FOOTHILL CHARTER SCHOOL No violations on file — pop. 157
JETTE'S YOSEMITE PARKLINE No violations on file — pop. 150
LAKE MC CLURE BOAT CLUB MHP No violations on file — pop. 150
YOSEMITE PARKLINE No violations on file — pop. 150
MARIPOSA COUNTY UNIFIED No violations on file — pop. 150
YOSEMITE NPS-SUNRISE HI No violations on file — pop. 150
YOSEMITE NPS-WAWONA No violations on file — pop. 150
YOSEMITE NPS-MERCED LAKE CAMP No violations on file — pop. 150
YOSEMITE NPS-VOGELSANG No violations on file — pop. 150
MID -HORSESHOE BEND REC AREA No violations on file — pop. 142
GREELEY HILL ELEMENTARY SCHOOL No violations on file — pop. 140
MCUSD - MARIPOSA JUNIOR HIGH SCHOOL No violations on file — pop. 134
YOSEMITE TERRACE ESTATES Open violation — pop. 130
LITTLE CHURCH IN THE HILLS No violations on file — pop. 125
YOSEMITE BUG HOSTEL No violations on file — pop. 122
GREEN MEADOWS OUTDOOR SCHOOL No violations on file — pop. 113
YOSEMITE ALPINE VILLAGE No violations on file — pop. 110
YOSEMITE ALPINE VILLAGE No violations on file — pop. 110
MT BULLION No violations on file — pop. 104
MARIPOSA COUNTY ROAD DEPT No violations on file — pop. 100
N WAWONA ESTATES No violations on file — pop. 100
N WAWONA PARK No violations on file — pop. 100
JERSEYDALE CAMPGROUND - USFS No violations on file — pop. 100
INDIAN FLAT CAMPGROUND No violations on file — pop. 100
OCTAGON No violations on file — pop. 100
NORTH WAWONA ESTATES No violations on file — pop. 100
NORTH WAWONA PARK No violations on file — pop. 100
INDIAN FLAT R V PARK AND CAMPGROUND Older violation on record — pop. 100
WILDHAVEN YOSEMITE WATER SYSTEM No violations on file — pop. 100
REDWOODS MAIN WATER SYSTEM No violations on file — pop. 93
YOSEMITE VIEW LODGE No violations on file — pop. 90
MID - BAGBY RECREATION AREA No violations on file — pop. 85
NORTH WAWONA ESTATES (B SYSTEM) No violations on file — pop. 81
MARIPOSA PINES MUTUAL WATER CO No violations on file — pop. 80
SOUTH GATE RV PARK No violations on file — pop. 80
SUMMERDALE CAMPGROUND No violations on file — pop. 80
SPRING HILL SCHOOL No violations on file — pop. 80
YOSEMITE ALPINE No violations on file — pop. 75
PORTA YOSEMITE TRAILER PARK No violations on file — pop. 75
WAMPUM HILL TRAILER PARK No violations on file — pop. 75
YOSEMITE ALPINE No violations on file — pop. 75
PORTA YOSEMITE TRAILER PARK No violations on file — pop. 75
WAMPUM HILL TRAILER VILLAGE No violations on file — pop. 75
WHITE CHIEF MOUNTAIN LODGE No violations on file — pop. 73
LUSHMEADOWS BARN No violations on file — pop. 70
LUSHMEADOWS BARN No violations on file — pop. 70
LDS CHURCH MARIPOSA No violations on file — pop. 65
YOSEMITE'S SCENIC WONDERS No violations on file — pop. 65
BUCK MEADOWS LODGE No violations on file — pop. 64
WAMPUM HILL TRAILER VILLAGE No violations on file — pop. 62
MARIPOSA LUTHERAN CHURCH No violations on file — pop. 60
MRS CARMEN HOLMES No violations on file — pop. 60
JERSEYDALE CAMPGROUND - USFS No violations on file — pop. 60
MRS CARMEN HOLMES No violations on file — pop. 60
BOOTJACK STOMPERS HALL No violations on file — pop. 60
SHORE FUN R.V. PARK No violations on file — pop. 60
YOSEMITE RIDGE RESORT No violations on file — pop. 60
MARIPOSA INDUSTRIAL PARK WATER COMPANY No violations on file — pop. 60
GREELEY HILL SQUARE - GOLD RUSH CHARTER No violations on file — pop. 60
CDF & FP - MT. BULLION Older violation on record — pop. 60
WHITE CHIEF LODGE No violations on file — pop. 59
OUTWARD BOUND CALIFORNIA No violations on file — pop. 56
OCTAGON, THE No violations on file — pop. 55
MCUSD -COULTERVILLE-GREELEY HILL SCHOOL No violations on file — pop. 55
MARIPOSA COUNTY PUBLIC WORKS DEPARTMENT No violations on file — pop. 55
HUMMINGBIRD ENT No violations on file — pop. 52
USONA CORPORATION No violations on file — pop. 50
CAMP CHILNUALNA WATER SYSTEM No violations on file — pop. 50
INDIAN FLAT R V PARK No violations on file — pop. 50
TAVIS CORPORATION No violations on file — pop. 50
HUNTER'S POINT MARINA No violations on file — pop. 50
SIERRA GARDEN APARTMENTS No violations on file — pop. 50
TAVIS CORPORATION No violations on file — pop. 50
TRIANGLE MARKET No violations on file — pop. 50
CATHEYS VALLEY SCHOOL No violations on file — pop. 50
GREELEY HILL VILLAGE No violations on file — pop. 50
MUIR LODGE No violations on file — pop. 50
MCPR-MIDPINES PARK No violations on file — pop. 50
MCPR - DARRAH SCHOOL PARK No violations on file — pop. 50
TAVIS CORPORATION Open violation — pop. 50
FAITHS HAVEN MOTEL No violations on file — pop. 48
CATHEYS VALLEY No violations on file — pop. 40
MUIR LODGE MOTEL No violations on file — pop. 40
WHISPERING PINES MOTEL No violations on file — pop. 40
CEDAR LODGE No violations on file — pop. 40
SIERRA MOBILE LODGE No violations on file — pop. 40
WHISPERING PINES MOTEL No violations on file — pop. 40
SIERRA MOBILE LODGE No violations on file — pop. 40
MUSD- SPRING HILL FACILITY No violations on file — pop. 40
YOSEMITE ALPINE CSD No violations on file — pop. 38
YOSEMITE RESORT PROPERTIES No violations on file — pop. 36
REDWOODS 70'S WATER SYSTEM No violations on file — pop. 36
FAITHS HAVEN MOTEL No violations on file — pop. 35
TAP ROOM No violations on file — pop. 35
MCPR- WOODLAND PARK No violations on file — pop. 35
CAMP CHILNUALNA WATER SYSTEM No violations on file — pop. 34
MARIPOSA MOBILE MANOR No violations on file — pop. 32
MARIPOSA MOBILE MANOR No violations on file — pop. 32
WHISPERING PINES APARTMENTS No violations on file — pop. 32
BUCK MEADOWS LODGE-YOSEMITE WESTGATE No violations on file — pop. 31
ACORN COOPERATIVE PRESCHOOL No violations on file — pop. 30
C-ARROW-B RECREATION No violations on file — pop. 30
MIDPINES TIMBER MOBILE HOME PARK No violations on file — pop. 30 — serves NC NEVADA FALLS
YOSEMITE VIEW LODGE BLDG A&B No violations on file — pop. 30
MARIPOSA MANOR No violations on file — pop. 30
YOSEMITE VIEW LODGE BLDG A&B No violations on file — pop. 30
WHISPERING PINES RECOVERY CENTER No violations on file — pop. 30
JONESES JUNCTION No violations on file — pop. 30
PLAZA BAR No violations on file — pop. 30
HILLTOP LIQUOR AND DELI No violations on file — pop. 30
GREELEY HILL GENERAL STORE No violations on file — pop. 30
PARKER'S WATER SYSTEM No violations on file — pop. 30
SAVAGES TRADING POST No violations on file — pop. 30
MARIPOSA PINES VILLA No violations on file — pop. 28 — serves NC NEVADA FALLS
CRYSTAL AIRE No violations on file — pop. 28
NORTH WAWONA PARK MUTUAL (A SYSTEM) No violations on file — pop. 28
BUTTERFLY MONTESSORI SCHOOL No violations on file — pop. 27
YOSEMITE NATIONAL PARK - CHINQUAPIN No violations on file — pop. 26
TIMBER MOBILE HOME PARK No violations on file — pop. 25
MILE HI CHALETS No violations on file — pop. 25
THE OASIS No violations on file — pop. 25
BRIDGE CAFE No violations on file — pop. 25
ROCKY VILLAGE RESTAURANT No violations on file — pop. 25
TIMBER MOBILE HOME PARK No violations on file — pop. 25
HILLSIDE MOTEL No violations on file — pop. 25
MEL O DEE MOTEL No violations on file — pop. 25
GUYS CHALET No violations on file — pop. 25
CALTRANS-MIDPINES No violations on file — pop. 25
CEDAR GROVE BIBLE CAMP No violations on file — pop. 25
ROCKY VILLAGE RESTAURANT No violations on file — pop. 25
CA. DEPT OF FORESTRY, COULTERVILLE No violations on file — pop. 25
CA. DEPT. OF FORESTRY, HORNITOS No violations on file — pop. 25
KRUSE'S KOUNTRY KITCHEN No violations on file — pop. 25
MCPR-HORNITOS CO. PARK No violations on file — pop. 25
MCPR-RED CLOUD PARK No violations on file — pop. 25
GOLDEN HILLS MOBILE HOME AND RV PARK Older violation on record — pop. 18
CATHEY'S VALLEY PRE SCHOOL No violations on file — pop. 15
SIERRA GARDEN APARTMENTS No violations on file — pop. 0 — serves NC NEVADA FALLS

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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?

Mariposa County, CA Water Quality Report

Violations on file

Contaminants found

Individual water providers