Neighborhood Report
Grade F
Helena, MT Neighborhood Water Quality — Grade F
8 ZIP codes · 288 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-04
Water quality varies significantly across Helena, MT. We analyzed 8 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade F (39/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 0 | 0% |
| D | 2 | 25% |
| F | 6 | 75% |
Neighborhood Rankings
Every ZIP code in Helena ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 59604 | 47 | D | 36 | 0.0030 mg/L |
| 2 | 59601 | 42 | D | 36 | 0.0030 mg/L |
| 3 | 59602 | 37 | F | 36 | 0.0030 mg/L |
| 4 | 59620 | 37 | F | 36 | 0.0030 mg/L |
| 5 | 59623 | 37 | F | 36 | 0.0030 mg/L |
| 6 | 59624 | 37 | F | 36 | 0.0030 mg/L |
| 7 | 59625 | 37 | F | 36 | 0.0030 mg/L |
| 8 | 59626 | 37 | F | 36 | 0.0030 mg/L |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 1 neighborhoods score better than county average
- 7 neighborhoods score worse than county average
EPA Violations
- 288 total violations across Helena
- 88 health-based violations
- 8 of 8 ZIP codes have violations
- 0 ZIP codes exceed EPA lead action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Total Trihalomethanes (TTHM) | 112 | 8 |
| Stage 1 DBP Rule | 88 | 8 |
| Consumer Confidence Report Rule | 32 | 8 |
| Surface Water Treatment Rule | 24 | 8 |
| Contaminant 0700 | 16 | 8 |
Frequently Asked Questions
What is the safest neighborhood in Helena?
ZIP code 59604 has the highest safety score in Helena at 47/100 (grade D). Check the full report for details.
Is Helena water safe to drink?
Helena has an average water safety score of 39/100 (F). 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.