Dakota County, Minnesota
18 ZIP codes · Avg score 58/100 · Grade C · Updated 2026-06-03
Water safety in Dakota County is uneven — some of its 18 ZIP codes meet standards cleanly while others carry documented violations.
How Dakota County Compares
How Dakota County Compares
Dakota County scores 4 points below the Minnesota state average (62/100) and 10 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Dakota County, Minnesota
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.2 (asthma 9.8%, diabetes 9.7%)
Estimated additional annual cost per homeowner: $979, driven primarily by flood
Infrastructure: 0.329% avg pipe failure probability, 11% of ZIPs at high risk
50.1% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Dakota County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 58 violations. Past 5 years: 94 total (94 health-based). Health-based violations are rising versus the prior 2-year window — worth closer monitoring.
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $979
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
167,694 housing units in Dakota County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Dakota County
Remediation costs are relatively manageable for most homeowners in Dakota County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Dakota County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Dakota County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Randolph | 355 | 9 |
| 2 | Inver Grove Heights | 34,189 | 8 |
| 3 | Skyline Village Mobile Home Park | 1,185 | 8 |
| 4 | Lakeville | 67,300 | 5 |
| 5 | Queen Anne Court | 400 | 4 |
20 total water systems serve Dakota County.
All ZIP Codes in Dakota County
18 ZIP codes tracked in Dakota County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 55068 | Rosemount | 70 | B | 1 | $380K |
| 2 | 55306 | Burnsville | 70 | B | 0 | $366K |
| 3 | 56514 | Barnesville | 70 | B | 0 | $234K |
| 4 | 55085 | Vermillion | 66 | C | 0 | $291K |
| 5 | 55024 | Farmington | 65 | C | 0 | $351K |
| 6 | 55337 | Burnsville | 65 | C | 0 | $328K |
| 7 | 55044 | Lakeville | 63 | C | 4 | $465K |
| 8 | 55033 | Hastings | 59 | C | 1 (1 health) | $336K |
| 9 | 55076 | Inver Grove Heights | 58 | C | 4 (3 health) | $309K |
| 10 | 55077 | Inver Grove Heights | 58 | C | 4 (3 health) | $497K |
| 11 | 55031 | Hampton | 55 | C | 0 | $393K |
| 12 | 55065 | Randolph | 54 | D | 9 (1 health) | $372K |
| 13 | 55122 | Saint Paul | 53 | D | 0 | $343K |
| 14 | 55123 | Saint Paul | 53 | D | 0 | $442K |
| 15 | 55124 | Saint Paul | 53 | D | 0 | $354K |
| 16 | 55118 | Saint Paul | 45 | D | 0 | $332K |
| 17 | 55120 | Saint Paul | 40 | D | 0 | $485K |
| 18 | 55121 | Saint Paul | 40 | D | 0 | $300K |
Recommended Buyer Guides for Dakota County
Methodologically, the recommendation order reflects severity in the federal record: contaminants flagged in EPA detection records for this county outrank generic water concerns, FEMA-confirmed hazard ratings shift emergency-related categories upward, and CDC lead-exposure markers govern when lead-test kits and certified filters appear at the top of the list.
- Best Lead Paint Test Kits — 50.1% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Dakota County, Minnesota
Overview
Dakota County in Minnesota covers 18 ZIP codes with an average Home Safety Score of C (58/100).
6 of 18 ZIP codes have recorded EPA violations. 8 health-based violations have been documented.
← Back to Minnesota water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.