Neighborhood Report
Grade C
Maricopa, AZ Neighborhood Water Quality — Grade C
4 ZIP codes · 288 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-04
Water quality varies significantly across Maricopa, AZ. We analyzed 4 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade C (56/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 3 | 75% |
| D | 1 | 25% |
| F | 0 | 0% |
Neighborhood Rankings
Every ZIP code in Maricopa ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 85138 | 58 | C | 72 | 0.0008 mg/L |
| 2 | 85139 | 58 | C | 72 | 0.0008 mg/L |
| 3 | 85239 | 58 | C | 72 | 0.0008 mg/L |
| 4 | 85238 | 50 | D | 72 | 0.0008 mg/L |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 0 neighborhoods score better than county average
- 4 neighborhoods score worse than county average
EPA Violations
- 288 total violations across Maricopa
- 108 health-based violations
- 4 of 4 ZIP codes have violations
- 0 ZIP codes exceed EPA lead action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Lead | 88 | 4 |
| Consumer Confidence Report Rule | 52 | 4 |
| Revised Total Coliform Rule | 40 | 4 |
| Lead and Copper Rule | 32 | 4 |
| Combined Radium | 16 | 4 |
Frequently Asked Questions
What is the safest neighborhood in Maricopa?
ZIP code 85138 has the highest safety score in Maricopa at 58/100 (grade C). Check the full report for details.
Is Maricopa water safe to drink?
Maricopa has an average water safety score of 56/100 (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.