Water Quality in Madera, CA (93637)
EPA violation data for public water systems serving ZIP code 93637.
Active Health Violations
142 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 99% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
43,785
Population
83
Water Systems
231
Violations (5yr)
142
Health-Based
Location
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Water Systems Serving This Area (83)
City Of Madera
Groundwater 66,560 people served
0 violations
Lead tested: 3 ppb (limit: 15 ppb) ✓
Madera Co Md10a-Madera Ranchos
Groundwater 3,172 people served
0 violations
Lead tested: 5.8 ppb (limit: 15 ppb) ✓
Madera Co Sa3-Parksdale
Groundwater 1,789 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Madera Co Cmd19-Parkwood
Groundwater 1,637 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Madera Co Sa1-Indian Lakes
Groundwater 1,562 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Berenda School
Groundwater 965 people served
0 violations
Howard Elementary School
Groundwater 618 people served
0 violations
Md 33 Fairmead
Groundwater 568 people served
0 violations
Lead tested: 1.6 ppb (limit: 15 ppb) ✓
Sws Land Development Inc
All resolved Groundwater 529 people served
35 violations (5yr)
· All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓
Madera District Fair
Groundwater 512 people served
0 violations
Walt'S Truck Stop
Groundwater 500 people served
0 violations
Eastin Arcola School
Groundwater 500 people served
0 violations
Cbuso Mission Bell
Groundwater 450 people served
0 violations
Lead tested: 1 ppb (limit: 15 ppb) ✓
Madera Mh & Rv Park
Groundwater 450 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Frank Secara
Groundwater 450 people served
0 violations
Ardagh Glass, Inc
Groundwater 384 people served
0 violations
Md 73 Quartz Mountain
Groundwater 375 people served
0 violations
Md 37 La Vina
All resolved Groundwater 350 people served
1 violation (5yr)
· All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓
Pomona Ranch Housing Center
Groundwater 322 people served
0 violations
Dixieland Elementary School
Groundwater 316 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Md 63 Meadow Springs Ranch
Groundwater 300 people served
0 violations
Md 46 Ahwahnee Resorts
Groundwater 300 people served
0 violations
Md 08 North Fork Water System
18 health-based Groundwater 264 people served
18 violations (5yr)
· 18 health-based · All resolved
Z Foods/Water System
Groundwater 250 people served
0 violations
La Vina School
Groundwater 240 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Md 05 Mountain Ranches
1 health-based Groundwater 239 people served
1 violation (5yr)
· 1 health-based · All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓
Fishcamp Mutual Water Company
All resolved Groundwater 239 people served
1 violation (5yr)
· All resolved
Madera Co Sa02-Wishon Cove
2 health-based Surface water 230 people served
2 violations (5yr)
· 2 health-based · All resolved
Madera Municipal Golf Course
Groundwater 200 people served
0 violations
Emerald Cove Camp
Groundwater 200 people served
0 violations
Md 07 Marina View Heights
All resolved Groundwater 200 people served
1 violation (5yr)
· All resolved
Family Food Center
Groundwater 200 people served
0 violations
La Vina Ranch Cold Storage
Groundwater 162 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Madera Co Md1-Hidden Lake Estates
32 health-based Surface water 162 people served
32 violations (5yr)
· 32 health-based · All resolved
Lead tested: 0.8 ppb (limit: 15 ppb) ✓
Rancho Market
Groundwater 152 people served
0 violations
Md 40 Sunset Ridge Estates
Groundwater 150 people served
0 violations
Md 95 Ranchos West
Groundwater 150 people served
0 violations
Lead tested: 1 ppb (limit: 15 ppb) ✓
Md 24 Teaford Meadow Lakes
25 health-based Groundwater 150 people served
26 violations (5yr)
· 25 health-based · All resolved
Md 60 Dillon Estates
Groundwater 150 people served
0 violations
Md 06 Lake Shore Park
Groundwater 148 people served
0 violations
Madera Irrigation District
Groundwater 145 people served
6 violations (5yr)
Lead tested: 0 ppb (limit: 15 ppb) ✓
Madera Unified School District
Groundwater 142 people served
0 violations
Madera Co Sa16 Sumner Hill
26 health-based Surface water 135 people served
26 violations (5yr)
· 26 health-based · All resolved
Lead tested: 3.1 ppb (limit: 15 ppb) ✓
Lamanuzzi Pantaleo Cs Dehy
Groundwater 125 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Ursi S Place (Cafe)
Groundwater 125 people served
0 violations
Country Living M.H. Park
Groundwater 120 people served
0 violations
Md 43 Miami Creek Knolls
Groundwater 100 people served
0 violations
Md 42 Still Meadow
32 health-based Groundwater 100 people served
34 violations (5yr)
· 32 health-based · All resolved
Valley Grain Products
Groundwater 100 people served
0 violations
Sa 14 Chuk Chanse Subdivision
Groundwater 100 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Royal Madera Vineyard
Groundwater 100 people served
0 violations
San Joaquin Wine Company
6 health-based Groundwater 90 people served
38 violations (5yr)
· 6 health-based · All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓
Md 36 Eastin Arcola
All resolved Groundwater 84 people served
1 violation (5yr)
· All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓
Ripperdan Community Day School
All resolved Groundwater 83 people served
2 violations (5yr)
· All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓
Sierra Valley Sun Inc
Groundwater 75 people served
0 violations
Md 58 Sierra Highlands
Groundwater 75 people served
0 violations
Pistachio Producers
Groundwater 75 people served
0 violations
Fairmead Landfill
Groundwater 72 people served
0 violations
Lead tested: 1.7 ppb (limit: 15 ppb) ✓
Musick Meadows 1
Groundwater 60 people served
2 violations (5yr)
Lead tested: 4.9 ppb (limit: 15 ppb) ✓
California Fruit Products
Groundwater 60 people served
0 violations
Bonita Five Inc.
Groundwater 50 people served
0 violations
Petrucci'S Bbq
Groundwater 50 people served
0 violations
Ripperdan Self-Help M.D. #28
Groundwater 48 people served
0 violations
Md 28 Ripperdan Self Help
All resolved Groundwater 48 people served
1 violation (5yr)
· All resolved
Lead tested: 0.7 ppb (limit: 15 ppb) ✓
Md 85 Valeta
Groundwater 45 people served
0 violations
Lead tested: 0.9 ppb (limit: 15 ppb) ✓
Gurdwara Parmeshar Dwar
Groundwater 42 people served
0 violations
Farmers Market
Groundwater 40 people served
0 violations
Family Food Center
All resolved Groundwater 37 people served
1 violation (5yr)
· All resolved
Victor Packing
Groundwater 35 people served
0 violations
Maeen K Yahya
Groundwater 35 people served
0 violations
Nemat Management Group
Groundwater 34 people served
0 violations
Quady Residence And Wnery
All resolved Groundwater 32 people served
2 violations (5yr)
· All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓
Madera Co Bass Lake Govt Center
Groundwater 31 people served
0 violations
Cps-Madera Retail
Groundwater 30 people served
0 violations
Emerzian Camp
Groundwater 30 people served
0 violations
La Vina Ranch Camp
Groundwater 30 people served
0 violations
Azteca Milling/Valley Grain 1b
Groundwater 30 people served
0 violations
Bonita Mini Mart - Water
Groundwater 25 people served
0 violations
Family Mart # 131 (Water Only )
Groundwater 25 people served
0 violations
Casa Grande Motel
Groundwater 25 people served
0 violations
Hirday Singh
Groundwater 16 people served
0 violations
Schafer Ranch
All resolved Groundwater 7 people served
1 violation (5yr)
· All resolved
Minarets Work Center
Groundwater 1 people served
0 violations
Contaminants Found
ArsenicHealth-Based
A naturally occurring element that can cause cancer and other health effects at high levels.
56 violations
All resolved
Total Haloacetic Acids (HAA5)Health-Based
28 violations
All resolved
TTHMHealth-Based
26 violations
All resolved
Combined UraniumHealth-Based
9 violations
All resolved
1,2-DIBROMO-3-CHLOROPROPANEHealth-Based
9 violations
All resolved
NitrateHealth-Based
At high levels, nitrate can cause blue baby syndrome in infants.
6 violations
All resolved
Surface Water Treatment RuleHealth-Based
6 violations
All resolved
Lead and Copper RuleMonitoring
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
5 violations
Has active
Revised Total Coliform RuleMonitoring
Missed testing deadlines — not a detection of bacteria.
3 violations
All resolved
NitriteMonitoring
Similar to nitrate — harmful to infants at high levels.
2 violations
All resolved
LEAD AND COPPER RULE REVISIONSMonitoring
2 violations
Has active
SimazineMonitoring
2 violations
All resolved
AtrazineMonitoring
2 violations
All resolved
LASSOMonitoring
2 violations
All resolved
1,1,1-TrichloroethaneMonitoring
1 violation
All resolved
StyreneMonitoring
1 violation
All resolved
Carbon tetrachlorideMonitoring
1 violation
All resolved
Vinyl chlorideMonitoring
1 violation
All resolved
1,2-DichloropropaneMonitoring
1 violation
All resolved
TrichloroethyleneMonitoring
1 violation
All resolved
1,2-DichloroethaneMonitoring
1 violation
All resolved
DICHLOROMETHANEMonitoring
1 violation
All resolved
BenzeneMonitoring
1 violation
All resolved
EthylbenzeneMonitoring
1 violation
All resolved
Xylenes, TotalMonitoring
1 violation
All resolved
1,1-DichloroethyleneMonitoring
1 violation
All resolved
TetrachloroethyleneMonitoring
1 violation
All resolved
o-DichlorobenzeneMonitoring
1 violation
All resolved
CHLOROBENZENEMonitoring
1 violation
All resolved
p-DichlorobenzeneMonitoring
1 violation
All resolved
1,1,2-TrichloroethaneMonitoring
1 violation
All resolved
cis-1,2-DichloroethyleneMonitoring
1 violation
All resolved
TolueneMonitoring
1 violation
All resolved
1,2,4-TrichlorobenzeneMonitoring
1 violation
All resolved
trans-1,2-DichloroethyleneMonitoring
1 violation
All resolved
BariumMonitoring
1 violation
All resolved
Antimony, TotalMonitoring
1 violation
All resolved
FluorideMonitoring
1 violation
All resolved
NickelMonitoring
1 violation
All resolved
MercuryMonitoring
1 violation
All resolved
Thallium, TotalMonitoring
1 violation
All resolved
CadmiumMonitoring
1 violation
All resolved
Beryllium, TotalMonitoring
1 violation
All resolved
ChromiumMonitoring
1 violation
All resolved
SeleniumMonitoring
1 violation
All resolved
HeptachlorMonitoring
1 violation
All resolved
ChlordaneMonitoring
1 violation
All resolved
HEXACHLOROBENZENEMonitoring
1 violation
All resolved
Di(2-ethylhexyl) phthalateMonitoring
1 violation
All resolved
HexachlorocyclopentadieneMonitoring
1 violation
All resolved
Benzo(a)pyreneMonitoring
1 violation
All resolved
DiquatMonitoring
1 violation
All resolved
Total Polychlorinated Biphenyls (PCB)Monitoring
1 violation
All resolved
BHC-GAMMAMonitoring
1 violation
All resolved
EndrinMonitoring
1 violation
All resolved
2,4,5-TPMonitoring
1 violation
All resolved
PentachlorophenolMonitoring
1 violation
All resolved
Heptachlor epoxideMonitoring
1 violation
All resolved
2,3,7,8-TCDDMonitoring
1 violation
All resolved
CarbofuranMonitoring
1 violation
All resolved
DalaponMonitoring
1 violation
All resolved
MethoxychlorMonitoring
1 violation
All resolved
EndothallMonitoring
1 violation
All resolved
GlyphosateMonitoring
1 violation
All resolved
Di(2-ethylhexyl) adipateMonitoring
1 violation
All resolved
ETHYLENE DIBROMIDEMonitoring
1 violation
All resolved
2,4-DMonitoring
1 violation
All resolved
OXAMYLMonitoring
1 violation
All resolved
PicloramMonitoring
1 violation
All resolved
DinosebMonitoring
1 violation
All resolved
ToxapheneMonitoring
1 violation
All resolved
Lead & Copper Levels
Lead (Pb)
Within limit0 ppb measured
Action level: 15 ppb
Sampled: Jan 2025
How Does This Compare?
Madera (93637) has more violations than 99% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 231.
Fewer violations 99th percentile More violations
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
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 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.