Neighborhood Report
Grade B
Corona, CA Neighborhood Water Quality — Grade B
7 ZIP codes · 7 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-03
Water quality varies significantly across Corona, CA. We analyzed 7 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade B (81/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 7 | 100% |
| C | 0 | 0% |
| D | 0 | 0% |
| F | 0 | 0% |
Neighborhood Rankings
Every ZIP code in Corona ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 92877 | 83 | B | 1 | 0.0030 mg/L |
| 2 | 92879 | 83 | B | 1 | 0.0030 mg/L |
| 3 | 92881 | 83 | B | 1 | 0.0030 mg/L |
| 4 | 92883 | 83 | B | 1 | 0.0030 mg/L |
| 5 | 92878 | 78 | B | 1 | 0.0030 mg/L |
| 6 | 92880 | 78 | B | 1 | 0.0030 mg/L |
| 7 | 92882 | 78 | B | 1 | 0.0030 mg/L |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 7 neighborhoods score better than county average
- 0 neighborhoods score worse than county average
EPA Violations
- 7 total violations across Corona
- 0 health-based violations
- 7 of 7 ZIP codes have violations
- 0 ZIP codes exceed EPA lead action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Total Trihalomethanes (TTHM) | 7 | 7 |
Frequently Asked Questions
What is the safest neighborhood in Corona?
ZIP code 92877 has the highest safety score in Corona at 83/100 (grade B). Check the full report for details.
Is Corona water safe to drink?
Corona has an average water safety score of 81/100 (B). 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.