Water Quality in Mankato, MN (56001)
EPA violation data for public water systems serving ZIP code 56001.
Active Health Violations
5 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 84% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
51,585
Population
120
Water Systems
29
Violations (5yr)
5
Health-Based
Location
Loading map...
Water Systems Serving This Area (120)
Mankato
Groundwater under influence of surface water 42,803 people served
0 violations
Lead tested: 2 ppb (limit: 15 ppb) ✓
Bray Park
Groundwater 1,000 people served
0 violations
Mount Kato
Groundwater 500 people served
0 violations
South Bend Township
All resolved Groundwater 325 people served
2 violations (5yr)
· All resolved
Skyline
Groundwater 289 people served
0 violations
Clarke'S Landing
Groundwater 236 people served
0 violations
Southview Heights
Groundwater 210 people served
0 violations
Kato Cycle Club
Groundwater 175 people served
0 violations
Mn Elevator Inc./Vertitron Midwest, Inc.
Groundwater 165 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Rapidan Development Company, Inc.
All resolved Groundwater 164 people served
3 violations (5yr)
· All resolved
Hiniker Company
1 health-based Groundwater 150 people served
2 violations (5yr)
· 1 health-based · All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓
Terrace View Golf Course
Groundwater 150 people served
0 violations
School Sisters Of Notre Dame
All resolved Groundwater 140 people served
5 violations (5yr)
· All resolved
Lead tested: 5 ppb (limit: 15 ppb) ✓ Copper tested: 1409 ppb (limit: 1300 ppb)
Duck Lake County Park
Groundwater 125 people served
0 violations
Minneopa State Park
Groundwater 100 people served
0 violations
Mankato Golf Club
Groundwater 100 people served
0 violations
Lake George County Park
Groundwater 100 people served
0 violations
William Minneopa Learning Center
Groundwater 100 people served
0 violations
Hillcrest Health Care Center
2 health-based Groundwater 94 people served
3 violations (5yr)
· 2 health-based · All resolved
Lead tested: 3 ppb (limit: 15 ppb) ✓
Daly Park
Groundwater 85 people served
0 violations
Land Of Memories Campground
Groundwater 75 people served
0 violations
A.H. Hermel Company
Groundwater 75 people served
0 violations
Lead tested: 7 ppb (limit: 15 ppb) ✓
Christ Our Redeemer Lutheran Church
Groundwater 75 people served
0 violations
Applewood Restaurant
Groundwater 75 people served
0 violations
Riverbend Homes And More
Groundwater 60 people served
9 violations (5yr)
Rapidan Park
Groundwater 60 people served
0 violations
Midwest Electric Products, Inc.
Groundwater 56 people served
0 violations
Mankato Ford
Groundwater 55 people served
0 violations
Stony Creek Well Association
Groundwater 51 people served
0 violations
Magellan Midstream Partners, Lp
Groundwater 50 people served
0 violations
Minneopa Golf Club
1 health-based Groundwater 50 people served
1 violation (5yr)
· 1 health-based · All resolved
Norseland Scout Camp
Groundwater 50 people served
0 violations
Weagel Park
Groundwater 50 people served
0 violations
Nuss Truck And Equipment
Groundwater 50 people served
0 violations
Red Jacket County Park
Groundwater 50 people served
0 violations
Downs Food Group
Groundwater 50 people served
0 violations
Lead tested: 6 ppb (limit: 15 ppb) ✓
Sunset Bay
Groundwater 48 people served
0 violations
Here We Grow Early Childhood Center
Groundwater 45 people served
0 violations
Lead tested: 3 ppb (limit: 15 ppb) ✓
Corteva Agriscience
Groundwater 40 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Benco Electric Cooperative
Groundwater 40 people served
0 violations
Lead tested: 2 ppb (limit: 15 ppb) ✓
Rapidan Dam Cafe
Groundwater 40 people served
0 violations
Terrace View East Condominium Assoc.
All resolved Groundwater 38 people served
2 violations (5yr)
· All resolved
Hubbard Feeds Inc. (Coralville)
Groundwater 37 people served
0 violations
B & H Petroleum Equipment Company
Groundwater 37 people served
0 violations
Kibble Equipment
Groundwater 36 people served
0 violations
Oak Grove Home
Groundwater 32 people served
0 violations
Farmland Industries
Groundwater 32 people served
0 violations
Crystal Valley-Madelia Hwy 60
Groundwater 30 people served
0 violations
Alter Metal Recycling
Groundwater 30 people served
0 violations
Living Word
Groundwater 30 people served
0 violations
Wise Stop Resort
1 health-based Groundwater 30 people served
2 violations (5yr)
· 1 health-based · All resolved
Builders Firstsource
Groundwater 30 people served
0 violations
Ktoe Radio
Groundwater 28 people served
0 violations
Junction Inn
Groundwater 25 people served
0 violations
Rons Truck Stop
Groundwater 25 people served
0 violations
Brey Park
Groundwater 25 people served
0 violations
University Park
Groundwater 25 people served
0 violations
Rothfork
Groundwater 25 people served
0 violations
Woody Hills
Groundwater 25 people served
0 violations
Lake Owen Villas 3
Groundwater 25 people served
0 violations
Ironwood Golf Club
Groundwater 25 people served
0 violations
Midwest Electric Products, Incorporated
Groundwater 25 people served
0 violations
Ranch Home
Groundwater 25 people served
0 violations
Last Chance
Groundwater 25 people served
0 violations
Camp Tonowaha
Groundwater 25 people served
0 violations
Southern Minn Equipment
Groundwater 25 people served
0 violations
Dicks Auto Sales
Groundwater 25 people served
0 violations
Kato Diagnostics
Groundwater 25 people served
0 violations
Starlight Drive In
Groundwater 25 people served
0 violations
Madison East Mhp
Groundwater 25 people served
0 violations
Atlas Plastics
Groundwater 25 people served
0 violations
Jim'S Campground
Groundwater 25 people served
0 violations
St Peter & Paul Campground
Groundwater 25 people served
0 violations
Evans Cabins
Groundwater 25 people served
0 violations
Petroleum Maintenance
Groundwater 25 people served
0 violations
C W Scheurer
Groundwater 25 people served
0 violations
Minneopa State Park
Groundwater 25 people served
0 violations
Karels Cabins
Groundwater 25 people served
0 violations
Fromm Auto Sales
Groundwater 25 people served
0 violations
L M Pauley
Groundwater 25 people served
0 violations
Camelot Park
Groundwater 25 people served
0 violations
Pierce Oil Co
Groundwater 25 people served
0 violations
Camp Patterson
Groundwater 25 people served
0 violations
Gary Auto Body Shop
Groundwater 25 people served
0 violations
Dairy Queen
Groundwater 25 people served
0 violations
Marigold Dairies
Groundwater 25 people served
0 violations
Southhaven
Groundwater 25 people served
0 violations
Lake Owen Villas 2
Groundwater 25 people served
0 violations
Kato Cabins Tavern
Groundwater 25 people served
0 violations
Banks
Groundwater 25 people served
0 violations
Van Horn Home Improvement
Groundwater 25 people served
0 violations
Imperial Refineries
Groundwater 25 people served
0 violations
Nordkapp
Groundwater 25 people served
0 violations
Kato Lounge
Groundwater 25 people served
0 violations
Twin Star Drive In
Groundwater 25 people served
0 violations
Slacter Scrap Iron Co
Groundwater 25 people served
0 violations
Eds North Star Service
Groundwater 25 people served
0 violations
Mountain Kato
Groundwater 25 people served
0 violations
Oak Grove Home
Groundwater 25 people served
0 violations
Lake Owen Villas 1
Groundwater 25 people served
0 violations
Mankato Municipal Airport
Groundwater 25 people served
0 violations
Terrace View Golf Club
Groundwater 25 people served
0 violations
Mankato Area Jaycees
Groundwater 25 people served
0 violations
Hubbard Mill Farms No 1
Groundwater 25 people served
0 violations
Crystal Valley Co-Op
Groundwater 25 people served
0 violations
Pauls Enterprises
Groundwater 25 people served
0 violations
Piepho Moving And Stor
Groundwater 25 people served
0 violations
Dairy Research Farm
Groundwater 25 people served
0 violations
Meadowbrook Board & Home Care
Groundwater 25 people served
0 violations
Midwest Elec Products Inc
Groundwater 25 people served
0 violations
Northland Beverage Inc
Groundwater 25 people served
0 violations
Lee'S Eastwood Manor
Groundwater 25 people served
0 violations
Countrywide Homes
Groundwater 25 people served
0 violations
Keepers Starcraft Sales
Groundwater 25 people served
0 violations
Kayot Inc
Groundwater 25 people served
0 violations
Hubbard Mill Farm Three
Groundwater 25 people served
0 violations
Freyberg Enterprises
Groundwater 4 people served
0 violations
Hope Lutheran Church
Groundwater 0
0 violations
Midwest Electric Products, Inc
Groundwater 0
0 violations
St Peter & Paul'S Campground
Groundwater 0
0 violations
Contaminants Found
Revised Total Coliform RuleHealth-Based
Missed testing deadlines — not a detection of bacteria.
13 violations
All resolved
LEAD AND COPPER RULE REVISIONSHealth-Based
2 violations
All resolved
Stage 1 Disinfectants and Disinfection Byproducts RuleHealth-Based
1 violation
All resolved
Groundwater RuleHealth-Based
1 violation
All resolved
Lead and Copper RuleMonitoring
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
3 violations
Has active
ChlorineMonitoring
Used to disinfect water — generally safe at regulated levels.
2 violations
All resolved
Gross Alpha, Excl. Radon and UMonitoring
1 violation
All resolved
Combined Radium (-226 and -228)Monitoring
1 violation
All resolved
Public NoticeMonitoring
1 violation
All resolved
ArsenicMonitoring
A naturally occurring element that can cause cancer and other health effects at high levels.
1 violation
All resolved
Total Haloacetic Acids (HAA5)Monitoring
1 violation
All resolved
TTHMMonitoring
1 violation
All resolved
Consumer Confidence RuleMonitoring
Annual water quality report delivery requirement.
1 violation
All resolved
Lead & Copper Levels
Lead (Pb)
Within limit0 ppb measured
Action level: 15 ppb
Sampled: Jan 2025
Copper (Cu)
Exceeds limit1409 ppb measured
Action level: 1300 ppb
Sampled: Jan 2025
How Does This Compare?
Mankato (56001) has more violations than 84% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 29.
Fewer violations 84th 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
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) 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.