Water Quality: Mankato, MN
8 water systems • 43,913 people served
Some ConcernsWater Quality Summary
Mankato is served by 8 public water systems with a combined service population of 43,913 people, and has 53 EPA Safe Drinking Water Act violations on record. Critically, 3 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Mankato's violation count is 848% above the national average for Minnesota. Contaminants associated with violations include Chlorine, Chlorine Dioxide.
Contaminants Found
Eye and nose irritation at high levels; long-term exposure above the MCL may cause liver and kidney damage.
Common source: Water treatment disinfectant added to kill harmful microorganisms
EPA limit: 4.0 mg/L (MRDL — Maximum Residual Disinfectant Level)
Can cause anemia in infants and young children; may cause nervous system effects at high levels.
Common source: Water treatment disinfectant used to control taste, odor, and microorganisms
EPA limit: 0.8 mg/L
Water Systems Serving Mankato
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| Mankato | MN1070009 | Surface Water | 42,803 | 0 |
| South Bend Township | MN1070026 | Groundwater | 325 | 3 |
| Skyline | MN1070018 | Groundwater | 289 | 1 |
| Rapidan Development Company, Inc. | MN1070016 | Groundwater | 164 | 6 |
| School Sisters of Notre Dame | MN1070024 | Groundwater | 140 | 9 |
| Hillcrest Health Care Center | MN1070012 | Groundwater | 94 | 4 |
| Riverbend Homes and More | MN1070022 | Groundwater | 60 | 27 |
| Terrace View East Condominium Assoc. | MN1070025 | Groundwater | 38 | 3 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Minnesota
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.