Water Quality in Madera, CA (93644)
EPA violation data for public water systems serving ZIP code 93644.
Active Health Violations
45 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 93% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
7,614
Population
70
Water Systems
66
Violations (5yr)
45
Health-Based
Location
Loading map...
Water Systems Serving This Area (70)
City Of Madera
Yosemite High School
4 health-basedSweetwater Steakhouse & Saloon
Sierra Pines Church
Broadview Terrace Mutual Water Company
1 health-basedRivergold Elementary School
Wasuma School
Oakhurst Elementary School
Kkmjllc Granite Mountain Resort
Camp Sugar Pine
Bass Lake Heights Mutual Water
1 health-basedHackney Spring Water Co
A & J Water
Calvin Crest Conference Center
All resolvedYosemite Bible Camp
All resolvedSky Acres Mutual Water Corp
1 health-based51167 Rd 426 Oakhurst 93644
Cedar Valley Mutual Water Co
15 health-basedSugar Pine Homeowners Assoc
1 health-basedOakhurst Lodge
Western Sierra Charter Schools
Yosemite Forks Est Mutual
17 health-basedHoliday Shops
Oakhurst Plaza
Oakhurst Shopping Center
Ecco
All resolvedMountain House Restaurant
Katie'S Country Kitchen
El Cid Mexican Cuisine
All resolvedBig Foot Burger Pit
Redwoods Main Water System
North Wawona Estates (B System)
Crass Mutual Water Company
1 health-basedSierra Sky Ranch Water System
Pike Ranch Mutual Water Co
3 health-basedOak Room The
Queen'S Inn By The River
Rolling Wheels Mhp
Mad Bear Cafe
Oak Park Church Of Nazarene
Twin Oaks
Paradise Springs
Yosemite Forks Mtn House Restaurant
Wagon Wheel Cafe
Oakhurst Market
Kidz Can 2
1 health-basedRustic Pine Lodge
Eagle Lake Ranger District
Whispering Pines Mhp
Hounds Tooth Inn
All resolvedRedwoods 70'S Water System
Eastern Madera Medical Center
The Tower House
Snowline Lodge Motel
Davis Trust
Heartland Opportunity Center - Inactive
Times Square
Hitching Post Saloon
Rollin Wagon Trailer Club
North Wawona Park Mutual (A System)
Old Barn Tech Center
Mclean Water System
Glenwood Acres Mutual Water Co
Gateway Christian School
Creekside Apartments
High Sierra Rv & Mh Park
Hrdlicka
Midway Market Complex
Al S Place
Sugar Pine Pizza
Contaminants Found
A naturally occurring element that can cause cancer and other health effects at high levels.
At high levels, nitrate can cause blue baby syndrome in infants.
Missed testing deadlines — not a detection of bacteria.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Madera (93644) has more violations than 93% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 66.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.