Scott County Water Quality: 3 Cities Ranked by the Records
Scott County, Minnesota: 3 city reports built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.
Highest result for each contaminant
One row per contaminant: the highest result any system in the county reported, against its limit. Open a row for the systems behind it.
LithiumDetected in 3 systems10 µg/L EPA health reference level (screening, not a legal limit) · US EPAHighest21.7 µg/L
- Shakopee21.7 µg/LSample date: 2025-01-27 to 2025-08-18
- Savage21.1 µg/LSample date: 2023-07-26 to 2023-10-04
- Prior Lake18.6 µg/LSample date: 2024-10-21 to 2025-07-21
Lead (90th percentile)Detected in 1 system of 3 tested15 µg/L federal action level · US EPAHighest2 µg/L
- Shakopee2 µg/LMonitoring period: 2026–2026 (still open)
- Prior LakeNot detectedMonitoring period: 2023–2025
- SavageNot detectedMonitoring period: 2022–2024
Perfluorobutanesulfonic acid (PFBS)Detected in 1 system of 3 tested2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPAHighest4.7 ng/L
- Shakopee4.7 ng/LSample date: 2025-01-27 to 2025-08-18
- Prior LakeNot detected · below 3.0 ng/L lab reporting limitSample date: 2024-10-21 to 2025-07-21
- SavageNot detected · below 3.0 ng/L lab reporting limitSample date: 2023-04-12 to 2023-09-12
Perfluorohexanoic acid (PFHxA)Detected in 1 system of 3 tested400,000 ng/L Michigan EGLE state MCL (strictest US state) · Michigan EGLEHighest33.4 ng/L
- Shakopee33.4 ng/LSample date: 2025-01-27 to 2025-08-18
- Prior LakeNot detected · below 3.0 ng/L lab reporting limitSample date: 2024-10-21 to 2025-07-21
- SavageNot detected · below 3.0 ng/L lab reporting limitSample date: 2023-04-12 to 2023-09-12
Perfluorobutanoic acid (PFBA)Detected in 1 system of 3 testedNo federal or state limit; shown for transparencyHighest33.8 ng/L
- Shakopee33.8 ng/LSample date: 2025-01-27 to 2025-08-18
- Prior LakeNot detected · below 5.0 ng/L lab reporting limitSample date: 2024-10-21 to 2025-07-21
- SavageNot detected · below 5.0 ng/L lab reporting limitSample date: 2023-04-12 to 2023-09-12
Perfluoropentanoic acid (PFPeA)Detected in 1 system of 3 testedNo federal or state limit; shown for transparencyHighest9.5 ng/L
- Shakopee9.5 ng/LSample date: 2025-01-27 to 2025-08-18
- Prior LakeNot detected · below 3.0 ng/L lab reporting limitSample date: 2024-10-21 to 2025-07-21
- SavageNot detected · below 3.0 ng/L lab reporting limitSample date: 2023-04-12 to 2023-09-12
25 PFAS tested, none detected in any systemShow
Tested in these 3 systems: Prior Lake, Savage, Shakopee
- 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
- 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
- 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
- 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
- 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
- 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
- Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
- N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
- N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
- Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
- Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
- Perfluoro-3-methoxypropanoic acid (PFMPA)
- Perfluoro-4-methoxybutanoic acid (PFMBA)
- Perfluorodecanoic acid (PFDA)
- Perfluorododecanoic acid (PFDoA)
- Perfluoroheptanesulfonic acid (PFHpS)
- Perfluoroheptanoic acid (PFHpA)
- Perfluorohexanesulfonic acid (PFHxS)
- Perfluorononanoic acid (PFNA)
- Perfluorooctanesulfonic acid (PFOS)
- Perfluorooctanoic acid (PFOA)
- Perfluoropentanesulfonic acid (PFPeS)
- Perfluorotetradecanoic acid (PFTA)
- Perfluorotridecanoic acid (PFTrDA)
- Perfluoroundecanoic acid (PFUnA)
Cities ranked by the records
Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no county score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works.
0of 3 cities above the 15 µg/L action level
Based on each system's 90th-percentile result. Lead from household plumbing isn't in this record.
Lead in MinnesotaLargest water systems
- ShakopeeShakopee · MN170000947,000 served
- SavageSavage · MN170000830,285 served
- Prior LakePrior Lake · MN170000729,300 served
Frequently asked
How does Scott County tap water compare across cities?
PurityMap ranks 3 cities in Scott County by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Prior Lake's main water system: Prior Lake · PWSID MN1700007 · Purity Score 100 (Excellent) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.
How many Scott County cities had a PFAS sample above a 2024 EPA limit?
None of the 3 Scott County city reports had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing. PFAS were detected below the limit in 1.
Is there lead in Scott County tap water?
Utilities report lead as a 90th-percentile result from home taps. 1 of 3 Scott County cities reported a value above zero, and none was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.
Have Scott County water systems had drinking-water violations?
1 city in Scott County has a health-based violation in the federal SDWIS record within about the last ten years. Each city report lists the contaminant, year and whether it was resolved.
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