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2026 Rankings
Water Safety Rankings 2026 by ZIP Code
Explore water safety rankings for U.S. ZIP codes based on EPA SDWIS data. Each ZIP code receives a Home Safety Score (0–100) that reflects water violations, lead levels, and radon risk.
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ZIP codes analyzed
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Average score
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Scored A or B
Interactive Map — Home Safety Score by ZIP Code
Click any dot to view the full report for that ZIP code. Color indicates score tier.
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50 Lowest-Scoring ZIP Codes
These ZIP codes have the lowest Home Safety Scores in our database. Lower scores reflect higher numbers of health-based water violations recorded in EPA data.
| # | ZIP Code | City | State | Score | Grade | Violations |
|---|---|---|---|---|---|---|
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50 Highest-Scoring ZIP Codes
These ZIP codes have the highest Home Safety Scores in our database, reflecting clean EPA records, low violation counts, and favorable environmental risk profiles.
| # | ZIP Code | City | State | Score | Grade | Violations |
|---|---|---|---|---|---|---|
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Methodology
Home Safety Scores are calculated from equally weighted components: water violation history (EPA SDWIS), lead levels (EPA LCR 90th percentile), county-level radon risk zones, and FEMA NFIP flood claims. Scores range from 0 to 100 — higher is safer. Score methodology → · Rankings methodology →
Home Safety Scores are calculated from equally weighted components: water violation history (EPA SDWIS), lead levels (EPA LCR 90th percentile), county-level radon risk zones, and FEMA NFIP flood claims. Scores range from 0 to 100 — higher is safer. Score methodology → · Rankings methodology →
Disclaimer: Scores are based on EPA SDWIS reported data and are not a guarantee of current water safety. Water quality can change. For the most current information, contact your local water utility or request a Consumer Confidence Report.
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