Neighborhood Report
Grade C
Flagstaff, AZ Neighborhood Water Quality — Grade C
6 ZIP codes · 120 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-03
Water quality varies significantly across Flagstaff, AZ. We analyzed 6 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade C (65/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 6 | 100% |
| D | 0 | 0% |
| F | 0 | 0% |
Neighborhood Rankings
Every ZIP code in Flagstaff ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 86005 | 69 | C | 20 | 0.0029 mg/L |
| 2 | 86002 | 65 | C | 20 | 0.0029 mg/L |
| 3 | 86003 | 65 | C | 20 | 0.0029 mg/L |
| 4 | 86011 | 65 | C | 20 | 0.0029 mg/L |
| 5 | 86001 | 64 | C | 20 | 0.0029 mg/L |
| 6 | 86004 | 59 | C | 20 | 0.0029 mg/L |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 5 neighborhoods score better than county average
- 1 neighborhoods score worse than county average
EPA Violations
- 120 total violations across Flagstaff
- 0 health-based violations
- 6 of 6 ZIP codes have violations
- 0 ZIP codes exceed EPA lead action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Chlorite | 18 | 6 |
| Consumer Confidence Report Rule | 18 | 6 |
| Stage 1 DBP Rule | 12 | 6 |
| E. coli | 12 | 6 |
| Contaminant 1009 | 6 | 6 |
Frequently Asked Questions
What is the safest neighborhood in Flagstaff?
ZIP code 86005 has the highest safety score in Flagstaff at 69/100 (grade C). Check the full report for details.
Is Flagstaff water safe to drink?
Flagstaff has an average water safety score of 65/100 (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.