Mankato, MN: 12 Violations — 64/100 (2026)
4 ZIP codes · 7 water systems · Updated 2026-06-03
Within Mankato, water safety data for MN reveals moderate quality — federal standards are generally met, but documented exceptions exist in specific service areas.
How Mankato Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Mankato Water
- Your city's water systems recorded 12 violations in the past 5 years.
- Average lead level: 0.002 mg/L.
- Estimated remediation: $2,100 per household.
- CDC health risk index: 11.55.
Who Supplies Your Water in Mankato
Water service in Mankato, MN is split across 3 utilities out of 7 tracked federally, each operating its own infrastructure and compliance record.
Overview
We track water quality and home safety data for 4 ZIP codes in Mankato, Minnesota, covering 7 community water systems serving approximately 66,279 people.
4 of 4 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Mankato: C (64/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Mankato water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0020 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 4 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | 5 | 4 |
| Consumer Confidence Report Rule | Reporting | 5 | 4 |
| Revised Total Coliform Rule | Microbiological | 5 | 4 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 56001 | C | 3 | 0 | Mankato |
| 56002 | C | 3 | 0 | Mankato |
| 56003 | C | 3 | 0 | Mankato |
| 56006 | C | 3 | 0 | Mankato |
All ZIP Codes in Mankato
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Health Outcomes in Mankato
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Top Contaminants in Mankato Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Cost Context: What Remediation Means for Mankato Homeowners
Low proportionality — that's the Mankato picture when remediation costs are placed against typical home equity.
Remediation costs in Mankato are relatively low compared to home values. The $1,400–$2,850 estimated range is a small fraction of median property value. Home values are 10% above the Minnesota average.
Lead Exposure Risk for Children in Mankato
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead risk in Mankato appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Mankato
A moderate NFIP record for Mankato — 92 insurance claims paired with 75% of ZIP codes in FEMA flood zones — points to a flood history where water-quality pathways have likely been periodically relevant.
Mankato has a moderate flood history with 92 FEMA claims averaging $7,754 per payout. 75% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$2,100</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Mankato
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. Filters rated for Stage 1 DBP Rule can reduce the most common contaminant found in Mankato's water.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Deep Dive Reports
Detailed analysis for Mankato, MN