Minnesota
Water quality data from the EPA Safe Drinking Water Information System
Water Systems
21,775
Active public water systems
Population Served
5.30M
Residents with piped water
Lead Violations
109
Systems exceeding 15 ppb
Copper Violations
393
Lead & Copper Rule
Average Lead Level
EPA Action Level: 15 ppb
MCLG (health goal): 0 ppb
Average across 1647 systems with reported lead data.
Violations Detected
502 water systems in Minnesota have reported violations under the Lead and Copper Rule. These utilities are required to notify customers and take corrective action.
Water Systems: Highest Lead Levels
| System Name | City | Population | Lead Level | Status | Sample Date |
|---|---|---|---|---|---|
| Hibbing | 16,028 | 32.00 ppb | Violation | 2025-12-31 | |
| St. Paul | 392,529 | 8.00 ppb | OK | 2025-12-31 | |
| Duluth | 86,859 | 8.00 ppb | OK | 2025-12-31 | |
| South St. Paul | 20,664 | 8.00 ppb | OK | 2025-12-31 | |
| Fergus Falls | 14,194 | 8.00 ppb | OK | 2025-12-31 | |
| Marshall | 13,890 | 8.00 ppb | OK | 2024-12-31 | |
| Rochester | 123,624 | 7.00 ppb | OK | 2025-12-31 | |
| Waconia | 13,277 | 7.00 ppb | OK | 2023-12-31 | |
| Roseville | 36,254 | 6.00 ppb | OK | 2025-12-31 | |
| Chaska | 30,000 | 6.00 ppb | OK | 2025-12-31 | |
| Moorhead | 44,583 | 5.00 ppb | OK | 2022-12-31 | |
| Faribault | 23,718 | 5.00 ppb | OK | 2023-12-31 | |
| St. Louis Park | 50,010 | 4.00 ppb | OK | 2025-12-31 | |
| Monticello | 15,087 | 4.00 ppb | OK | 2025-12-31 | |
| Grand Rapids | 11,346 | 4.00 ppb | OK | 2025-12-31 |
Showing top 15 of 1611 systems with lead data. Action level: 15 ppb.
Systems With Active Violations
These water systems have exceeded EPA limits and must take corrective action.
Plymouth · Pop. 81,026
Lead: 2.00 ppb (2024-12-31)
Blaine · Pop. 70,220
Lead: 0.00 ppb (2023-12-31)
Coon Rapids · Pop. 64,000
Lead: 0.00 ppb (2023-12-31)
Minnetonka · Pop. 54,474
Lead: 0.00 ppb (2023-12-31)
Edina · Pop. 53,494
Lead: 0.00 ppb (2024-12-31)
Albertville · Pop. 30,922
Lead: 1.00 ppb (2025-12-31)
Chanhassen · Pop. 24,951
Lead: 0.00 ppb (2025-12-31)
Faribault · Pop. 23,718
Lead: 5.00 ppb (2023-12-31)
Willmar · Pop. 21,045
Lead: 1.00 ppb (2025-06-30)
Sartell · Pop. 20,300
Lead: 2.00 ppb (2024-12-31)
Hopkins · Pop. 19,462
Lead: 1.00 ppb (2023-12-31)
Albert Lea · Pop. 18,492
Lead: 2.00 ppb (2025-12-31)
Water Source Types
Air Quality
GoodAvg AQI
42.1
PM2.5
5.3 µg/m³
Unhealthy Days
2
Primary Pollutant
Ozone
Source: EPA AirNow & American Lung Association 2024 State of the Air. AQI scale: 0–50 Good · 51–100 Moderate · 101–150 Sensitive Groups · 151+ Unhealthy.
PFAS Contamination
Moderate DetectionPFAS (per- and polyfluoroalkyl substances), known as “forever chemicals,” are a group of synthetic chemicals that persist indefinitely in the environment and human body. The EPA set a maximum contaminant level (MCL) of 4 parts per trillion (ppt) for PFOA and PFOS in April 2024. View national PFAS tracker →
Systems Tested
298
PFAS Detected
112
Detection Rate
37.6%
Exceeding MCL (4 ppt)
24(8.1%)
Highest recorded level: 88 ppt (EPA MCL: 4 ppt). 3M (Scotchgard manufacturer) headquarters; East Metro contamination from 3M disposal sites is major issue. State interactive dashboard available