Sierra Vista, AZ Home Safety by Neighborhood - Water Issues Recorded
4 ZIP codes · 241 EPA violations on record for mapped water systems
Data source: ZipCheckup Home Safety Score registry; EPA SDWIS; EPA radon; EPA AirNow
ZipCheckup compares 4 ZIP codes across Sierra Vista, AZ. The area averages a grade C (67/100); water systems associated with 2 ZIP codes have recorded EPA violations.
Home-safety conditions vary across Sierra Vista, AZ. 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 C (67/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 2 | 100% |
| D | 0 | 0% |
| F | 0 | 0% |
Neighborhood Rankings
Mapped ZIP codes in Sierra Vista ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 85635 | 67 | C | 229 | 0.0010 mg/L |
| 2 | 85650 | 67 | C | 227 | 0.0014 mg/L |
| 3 | 85636 | — | — | — | No data |
| 4 | 85671 | — | — | — | No data |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 0 neighborhoods score better than county average
- 2 neighborhoods score worse than county average
EPA Violations
- 241 total violations since 2021 across the water systems mapped to Sierra Vista ZIP codes (each system counted once; includes small systems beyond the city utility)
- 13 health-based violation records in the available EPA data
- 2 of 2 directly mapped ZIP records are mapped to water systems with recorded violations
- 0 of 2 ZIP records with known lead status are served by a system whose 90th-percentile lead result exceeded the EPA action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| E. coli | 27 | 2 |
| Lead and Copper Rule Revisions | 16 | 2 |
| Lead and Copper Rule | 14 | 2 |
| Public Notice Rule | 12 | 2 |
| Di(2-ethylhexyl) phthalate | 10 | 2 |
Frequently Asked Questions
Which ZIP code in Sierra Vista has the highest home safety score?
ZIP code 85635 has the highest safety score among scored ZIP codes in Sierra Vista at 67/100 (grade C). Check the full report for details.
Is Sierra Vista water safe to drink?
The Home Safety Score is not a drinking-water grade. Across 2 directly mapped ZIP records, 241 EPA violations are recorded; 0 of 2 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.