Ontario, CA Home Safety by Neighborhood - Water Issues Recorded
5 ZIP codes · 1 EPA violation
Data source: ZipCheckup Home Safety Score registry; EPA SDWIS; EPA radon; EPA AirNow
ZipCheckup compares 5 ZIP codes across Ontario, CA. The area averages a grade C (58/100); 1 ZIP code carry recorded EPA violations.
Home-safety conditions vary across Ontario, CA. We compared 5 ZIP codes using the current versioned Home Safety Score. Water compliance remains one component alongside PFAS screening, radon, and annual air quality.
City Overview: Grade C (58/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 3 | 100% |
| D | 0 | 0% |
| F | 0 | 0% |
Neighborhood Rankings
Every ZIP code in Ontario ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 91761 | 58 | C | 0 | 0.0006 mg/L |
| 2 | 91762 | 58 | C | 1 | 0.0010 mg/L |
| 3 | 91764 | 58 | C | 0 | 0.0006 mg/L |
| 4 | 91758 | — | — | — | No data |
| 5 | 91798 | — | — | — | No data |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 0 neighborhoods score better than county average
- 3 neighborhoods score worse than county average
EPA Violations
- 1 total violations across Ontario
- 0 health-based violations
- 1 of 3 directly mapped ZIP records have violations
- 0 of 3 ZIP records with known lead status exceed the EPA action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Stage 1 DBP Rule | 1 | 1 |
Frequently Asked Questions
What is the safest neighborhood in Ontario?
ZIP code 91761 has the highest safety score in Ontario at 58/100 (grade C). Check the full report for details.
Is Ontario water safe to drink?
The Home Safety Score is not a drinking-water grade. Across 3 directly mapped ZIP records, 1 EPA violation is recorded; 0 of 3 records with known lead status exceed the action level. Check the specific ZIP and serving system before drawing a property-level conclusion.
Related Pages
Data Sources
- EPA SDWIS
- U.S. Census Bureau
Reporting periods vary by source; the page metadata identifies this materialization.