Longmont, CO Home Safety by Neighborhood - Water Issues Recorded
4 ZIP codes · 23 EPA violations
Data source: ZipCheckup Home Safety Score registry; EPA SDWIS; EPA radon; EPA AirNow
ZipCheckup compares 4 ZIP codes across Longmont, CO. The area averages a grade D (50/100); 3 ZIP codes carry recorded EPA violations.
Home-safety conditions vary across Longmont, CO. We compared 4 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 D (50/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 1 | 33% |
| D | 1 | 33% |
| F | 1 | 33% |
Neighborhood Rankings
Every ZIP code in Longmont ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 80501 | 66 | C | 2 | 0.0016 mg/L |
| 2 | 80503 | 49 | D | 4 | 0.0020 mg/L |
| 3 | 80504 | 35 | F | 17 | 0.0100 mg/L |
| 4 | 80502 | — | — | — | No data |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 1 neighborhoods score better than county average
- 2 neighborhoods score worse than county average
EPA Violations
- 23 total violations across Longmont
- 0 health-based violations
- 3 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 |
|---|---|---|
| Total Trihalomethanes (TTHM) | 5 | 3 |
| Haloacetic Acids (HAA5) | 5 | 3 |
| E. coli | 4 | 2 |
| Stage 1 DBP Rule | 3 | 1 |
| Lead and Copper Rule | 2 | 1 |
Frequently Asked Questions
What is the safest neighborhood in Longmont?
ZIP code 80501 has the highest safety score in Longmont at 66/100 (grade C). Check the full report for details.
Is Longmont water safe to drink?
The Home Safety Score is not a drinking-water grade. Across 3 directly mapped ZIP records, 23 EPA violations are 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.