Neighborhood Report
Grade D
Lancaster, CA Neighborhood Water Quality — Grade D
6 ZIP codes · 144 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-03
Water quality varies significantly across Lancaster, CA. We analyzed 6 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade D (40/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 0 | 0% |
| D | 3 | 50% |
| F | 3 | 50% |
Neighborhood Rankings
Every ZIP code in Lancaster ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 93534 | 48 | D | 24 | 0.0092 mg/L |
| 2 | 93535 | 43 | D | 24 | 0.0092 mg/L |
| 3 | 93536 | 43 | D | 24 | 0.0092 mg/L |
| 4 | 93539 | 36 | F | 24 | 0.0092 mg/L |
| 5 | 93584 | 36 | F | 24 | 0.0092 mg/L |
| 6 | 93586 | 36 | F | 24 | 0.0092 mg/L |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 0 neighborhoods score better than county average
- 6 neighborhoods score worse than county average
EPA Violations
- 144 total violations across Lancaster
- 114 health-based violations
- 6 of 6 ZIP codes have violations
- 0 ZIP codes exceed EPA lead action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Barium | 108 | 6 |
| Total Trihalomethanes (TTHM) | 12 | 6 |
| Total Coliform | 6 | 6 |
| Stage 1 DBP Rule | 6 | 6 |
| Consumer Confidence Report Rule | 6 | 6 |
Frequently Asked Questions
What is the safest neighborhood in Lancaster?
ZIP code 93534 has the highest safety score in Lancaster at 48/100 (grade D). Check the full report for details.
Is Lancaster water safe to drink?
Lancaster has an average water safety score of 40/100 (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.