Tapcensus

California

Madera County drinking water quality

202 active public water systems serve 187,073 people in Madera County. 124 are compliant, 78 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 17 carry a health flag.

Active systems 202 68 community systems
People served 187K by public water systems
Systems with violations 78 39% of active systems, past 3 years
Serious violators 1 17 systems carry a health flag

Needs attention

Two Twenty Four Mobile Home PK CA2000592 · Community water system · Serves 35 3 rules violated in the past three years. Unresolved: Lead and Copper Rule and Lead and Copper Rule Revisions.
Riverstone/rootcreek Water District CA2010016 · Madera · Community water system · Serves 10,276 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Yosemite Spring Park Util CO CA2010005 · Community water system · Serves 5,300 3 rules violated in the past three years. Unresolved: Lead and Copper Rule, Lead and Copper Rule Revisions, and Consumer Confidence Rule.
Bakman Water-Rolling Hills CA2010009 · Community water system · Serves 1,107 2 rules violated in the past three years. Unresolved: Lead and Copper Rule and Lead and Copper Rule Revisions.
North Fork Elementary School CA2000612 · Non-Transient non-community system · Serves 350 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Bass Lake Heights Mutual Water CA2000502 · Community water system · Serves 250 3 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
East Acres Mutual Water Company CA2000512 · Community water system · Serves 250 4 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Sierra Linda Mutual Water CO CA2000506 · Community water system · Serves 200 3 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Sky Acres Mutual Water Corp CA2000524 · Community water system · Serves 175 2 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Cedar Valley Mutual Water CO CA2000538 · Community water system · Serves 137 2 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions.

7 more systems with a serious violator or health flag designation are in the lists below.

Community water systems

68 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
City of Madera
Madera 		66,560 0 0
Chowchilla City Water Dept
Chowchilla 		13,916 0 0
Riverstone/rootcreek Water District
Madera 		10,276 1 1
Madera Valley Water Company
 6,524 0 0
Yosemite Spring Park Util CO
 5,300 3 3
Tesoro Viejo Master Mwc, Inc.
 4,660 0 0
Cal AM Oakhurst
 3,710 0 0
Valley State Prison
 3,151 0 0
Madera CO Md10a-Madera Ranchos
 3,072 0 0
Cal AM Bass Lake
 3,066 1 0
Madera CO Csa 22c Gunner Ranch
Madera 		3,050 0 0
Central CA Womens Facility
 2,046 0 0
Madera CO Sa3-Parksdale
 1,789 0 0
Madera CO Cmd19-Parkwood
 1,637 1 0
Madera CO Sa1-Indian Lakes
 1,562 0 0
Bakman Water-Rolling Hills
 1,107 2 2
Cal AM Goldside
 1,053 0 0
MD 33 Fairmead
 568 0 0
Broadview Terrace Mutual Water Company
 498 1 0
Madera MH & RV Park
 450 5 0
MD 73 Quartz Mountain
 375 1 0
Oak Creek Mobile Home Park
 370 0 0
MD 37 la Vina
 350 1 0
Cal AM Raymond
 347 0 0
MD 46 Ahwahnee Resorts
 300 0 0
MD 63 Meadow Springs Ranch
 300 0 0
MD 08 North Fork Water System
 264 1 0
Bass Lake Heights Mutual Water
 250 3 1
East Acres Mutual Water Company
 250 4 1
MD 05 Mountain Ranches
 239 0 0
Preserve at Millerton Lake Water System
 204 0 0
MD 07 Marina View Heights
 200 1 0
Sierra Linda Mutual Water CO
 200 3 1
Sky Acres Mutual Water Corp
 175 2 1
Madera CO Md1-Hidden Lake Estates
 162 1 0
MD 24 Teaford Meadow Lakes
 150 1 0
MD 40 Sunset Ridge Estates
 150 0 0
MD 60 Dillon Estates
 150 0 0
MD 95 Ranchos West
 150 0 0
Oakhurst Mobile Home Estates
 138 0 0
Cedar Valley Mutual Water CO
 137 2 1
Madera CO SA16 Sumner Hill
 135 2 0
Skp Park of the Sierras INC
 130 1 0
Sugar Pine Homeowners Assoc
 120 2 2
Yosemite Forks Est Mutual
 110 1 0
Wildwood Mobile Home PK INC
 106 1 1
Ecco
 100 1 0
MD 42 Still Meadow
 100 2 0
MD 43 Miami Creek Knolls
 100 0 0
SA 14 Chuk Chanse Subdivision
 100 0 0
Non-community systems (134: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Lupine Bass Lake
 11,930 0 0
Yosemite Nps-Mariposa Grove
 3,500 0 0
Millerton Sra Meadow Tank Hill
 2,506 0 0
Valley Children's Hospital
 2,500 0 0
Tom Pistachio Water System
 2,100 0 0
Nps-Devils Postpile
 1,220 0 0
Pumice Flats Campground
 1,173 0 0
Forks Resort
 853 0 0
Madera Community College
 750 0 0
Etaa Facilities LLC
 636 1 1
Howard Elementary School
 618 0 0
United Pacific #0251
 530 0 0
Madera District Fair
 512 0 0
Studios 6 Suites
 508 2 0
Sierra Pines Church
Madera 		500 0 0
Cbuso Mission Bell
 450 0 0
Rivergold Elementary School
 444 0 0
Coarsegold School
 389 0 0
Ardagh Glass, INC
 381 0 0
Yosemite RV Resort
 361 0 0
Wasuma School
 354 1 1
North Fork Elementary School
 350 1 1
Minarets High School
 325 1 1
Pomona Ranch Housing Center
 322 0 0
Dixieland Elementary School
 316 0 0
Toca Madera Winery
 310 1 0
LA Vina School
 302 0 0
Chowchilla Cong of J W S
 300 0 0
Fast and EZ Trip
Madera 		300 0 0
Oakstone LLC
 300 0 0
Hidden View Hensley Lake
 297 0 0
Oakhurst Christian Conf Center
 288 0 0
Baltimore Aircoiil Company
 280 0 0
Skylake Yosemite Camp
 280 0 0
Central Camp Water Company
 261 0 0
Camp Sugar Pine
 258 0 0
Dairyland School
 252 0 0
Jackass Rock Camp
 250 0 0
Sierra View School
 250 1 1
Calbee America Incorporated
 244 0 0
Fossil Discovery Center
 231 0 0
Madera CO Sa02-Wishon Cove
 230 0 0
Miller's Landing Resort
 230 1 0
Alview School
 211 0 0
Certainteed LLC
 205 0 0
Emerald Cove Camp
 204 1 0
Extra Mart
 202 0 0
Calvin Crest Conference Center
 200 2 0
Kane Ranch Water Association
 200 0 0
Madera Municipal Golf Course
 200 1 0
Snowline
 200 0 0
Yosemite Bible Camp
 200 0 0
Rio Mesa Golf INC
 190 0 0
Wp&a-Firebaugh Water System
 173 0 0
Dragonfly Golf Course/water
 160 0 0
Rancho Market
 152 0 0
The Manor Estate
 152 0 0
Lifebridge Community Church
 150 1 0
Madera Ranchos Assembly of God
 150 1 0
Spring Valley School
 150 0 0
MD 06 Lake Shore Park
 148 0 0
California Vipassana Center
 127 0 0
Lamanuzzi Pantaleo CS Dehy
 125 1 0
Madera Hispanic Church
Madera 		125 1 0
River Creek Golf Club
 125 0 0
Cedar Spring Retreat Center
 122 1 0
Nott-Hill Investment Corp (water)
 120 0 0
Ripperdan Community Day School
 120 2 0
Coarsegold Market
 115 2 1
Western Sierra Charter Schools
 113 0 0
Codorniz Rec Area Eastman LK
 108 0 0
Beasore Mutual Water Co.
 100 1 0
EL Cid Mexican Cuisine
 100 0 0
High Sierra Meadow Mutual Water
 100 0 0
Pioneer Market
 100 1 0
Quick Serve Chevron
 100 0 0
Red Top Market
 100 0 0
Table MT Chevron
 100 1 0
United Park INC
 100 0 0
Azteca Milling LP Valley Grain
 99 0 0
B K Lighting INC
 90 2 0
San Joaquin Wine Company
 90 2 0
Chowchilla Rec Area Eastman Lake
 82 0 0
Camp Krem Yosemite
 81 0 0
Sierra Sky Ranch Water System
 78 0 0
Reds Meadow Resort
 75 0 0
US Horticulture LLC
 73 0 0
Fairmead Landfill
 72 0 0
Silver Creek
 64 1 0
Agriland Farming
 60 1 0
Almaden Madera
 60 0 0
SC Corner (water Only)
 60 1 0
Queen's Inn by the River
 58 0 0
Buck Ridge Hensley Lake
 55 0 0
Yosemite Lakes Community Church
 51 1 0
Bass Fork Star
 50 1 0
Blackhawk Center Water System
 50 0 0
Bonita Five Inc.
 50 0 0
Madera Irrigation District
 50 4 2
Paradise Springs
 50 0 0
All 134 in the systems table
Inactive systems (114, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The California records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.