Neighborhood Report
Grade B
Norwalk, CA Neighborhood Water Quality — Clean Compliance
4 ZIP codes · 0 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-03
Water quality varies significantly across Norwalk, CA. We analyzed 4 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade B (73/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 4 | 100% |
| C | 0 | 0% |
| D | 0 | 0% |
| F | 0 | 0% |
Neighborhood Rankings
Every ZIP code in Norwalk ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 90650 | 75 | B | 0 | No data |
| 2 | 90651 | 72 | B | 0 | No data |
| 3 | 90652 | 72 | B | 0 | No data |
| 4 | 90659 | 72 | B | 0 | No data |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 1 neighborhoods score better than county average
- 3 neighborhoods score worse than county average
Frequently Asked Questions
What is the safest neighborhood in Norwalk?
ZIP code 90650 has the highest safety score in Norwalk at 75/100 (grade B). Check the full report for details.
Is Norwalk water safe to drink?
Norwalk has an average water safety score of 73/100 (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.