Sioux Falls, SD Neighborhood Water Quality — Grade C
20 ZIP codes · 40 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-03
Water quality varies significantly across Sioux Falls, SD. We analyzed 20 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade C (61/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 20 | 100% |
| D | 0 | 0% |
| F | 0 | 0% |
Neighborhood Rankings
Every ZIP code in Sioux Falls ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 57101 | 66 | C | 2 | 0.0030 mg/L |
| 2 | 57110 | 66 | C | 2 | 0.0030 mg/L |
| 3 | 57103 | 61 | C | 2 | 0.0030 mg/L |
| 4 | 57106 | 61 | C | 2 | 0.0030 mg/L |
| 5 | 57107 | 61 | C | 2 | 0.0030 mg/L |
| 6 | 57108 | 61 | C | 2 | 0.0030 mg/L |
| 7 | 57109 | 61 | C | 2 | 0.0030 mg/L |
| 8 | 57117 | 61 | C | 2 | 0.0030 mg/L |
| 9 | 57118 | 61 | C | 2 | 0.0030 mg/L |
| 10 | 57186 | 61 | C | 2 | 0.0030 mg/L |
| 11 | 57189 | 61 | C | 2 | 0.0030 mg/L |
| 12 | 57192 | 61 | C | 2 | 0.0030 mg/L |
| 13 | 57193 | 61 | C | 2 | 0.0030 mg/L |
| 14 | 57194 | 61 | C | 2 | 0.0030 mg/L |
| 15 | 57195 | 61 | C | 2 | 0.0030 mg/L |
| 16 | 57196 | 61 | C | 2 | 0.0030 mg/L |
| 17 | 57197 | 61 | C | 2 | 0.0030 mg/L |
| 18 | 57198 | 61 | C | 2 | 0.0030 mg/L |
| 19 | 57104 | 56 | C | 2 | 0.0030 mg/L |
| 20 | 57105 | 56 | C | 2 | 0.0030 mg/L |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 17 neighborhoods score better than county average
- 3 neighborhoods score worse than county average
EPA Violations
- 40 total violations across Sioux Falls
- 20 health-based violations
- 20 of 20 ZIP codes have violations
- 0 ZIP codes exceed EPA lead action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Revised Total Coliform Rule | 20 | 20 |
| Chlorine residual | 20 | 20 |
Frequently Asked Questions
What is the safest neighborhood in Sioux Falls?
ZIP code 57101 has the highest safety score in Sioux Falls at 66/100 (grade C). Check the full report for details.
Is Sioux Falls water safe to drink?
Sioux Falls has an average water safety score of 61/100 (C). Water quality varies by neighborhood — no ZIP codes currently exceed EPA lead limits. Always check your specific ZIP code.
Related Pages
Data Sources
- EPA SDWIS
- U.S. Census Bureau
Updated daily.