Neighborhood Report
Grade D
Waukesha, WI Neighborhood Water Quality — Grade D
4 ZIP codes · 92 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-04
Water quality varies significantly across Waukesha, WI. We analyzed 4 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade D (41/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 0 | 0% |
| D | 3 | 75% |
| F | 1 | 25% |
Neighborhood Rankings
Every ZIP code in Waukesha ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 53189 | 46 | D | 23 | 0.0023 mg/L |
| 2 | 53186 | 41 | D | 23 | 0.0023 mg/L |
| 3 | 53188 | 41 | D | 23 | 0.0023 mg/L |
| 4 | 53187 | 36 | F | 23 | 0.0023 mg/L |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 0 neighborhoods score better than county average
- 4 neighborhoods score worse than county average
EPA Violations
- 92 total violations across Waukesha
- 48 health-based violations
- 4 of 4 ZIP codes have violations
- 0 ZIP codes exceed EPA lead action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Gross Alpha | 32 | 4 |
| Lead and Copper Rule | 24 | 4 |
| Gross Beta | 16 | 4 |
| Stage 1 DBP Rule | 8 | 4 |
| Contaminant 1006 | 4 | 4 |
Frequently Asked Questions
What is the safest neighborhood in Waukesha?
ZIP code 53189 has the highest safety score in Waukesha at 46/100 (grade D). Check the full report for details.
Is Waukesha water safe to drink?
Waukesha has an average water safety score of 41/100 (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.