Neighborhood Report
Grade D
Moraga, CA Neighborhood Water Quality — Grade D
3 ZIP codes · 54 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-03
Water quality varies significantly across Moraga, CA. We analyzed 3 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade D (52/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 1 | 33% |
| D | 2 | 67% |
| F | 0 | 0% |
Neighborhood Rankings
Every ZIP code in Moraga ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 94556 | 66 | C | 18 | 0.0065 mg/L |
| 2 | 94570 | 45 | D | 18 | 0.0065 mg/L |
| 3 | 94575 | 45 | D | 18 | 0.0065 mg/L |
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
- 54 total violations across Moraga
- 42 health-based violations
- 3 of 3 ZIP codes have violations
- 0 ZIP codes exceed EPA lead action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Barium | 36 | 3 |
| Stage 2 DBP Rule | 12 | 3 |
| Stage 1 DBP Rule | 3 | 3 |
| Consumer Confidence Report Rule | 3 | 3 |
Frequently Asked Questions
What is the safest neighborhood in Moraga?
ZIP code 94556 has the highest safety score in Moraga at 66/100 (grade C). Check the full report for details.
Is Moraga water safe to drink?
Moraga has an average water safety score of 52/100 (D). 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.