Safest and Riskiest Metros for Homebuyers in 2026
Data source: ZipCheckup analysis of EPA SDWIS, FEMA flood data, Census ACS for 29,218 ZIP codes
If you're buying a home in 2026, the metro area you choose affects more than commute times and school ratings. It determines the age of the pipes delivering your water, the likelihood of contaminants in your tap, and whether regulators are paying attention when something goes wrong.
We analyzed safety data for 29,218 ZIP codes across every US state and territory to identify which metro areas offer the safest home environments — and which ones should make buyers pause.
The National Picture
Across all ZIP codes, the national average safety score is 70 out of 100 (B grade). But that average masks enormous variation:
- Top-performing states average 81-84, with 80-98% of ZIP codes earning A or B grades
- Bottom-performing states average 56-62, with as few as 10-15% of ZIP codes earning A or B
- The gap between the best and worst states is 28 points — the difference between a B+ and a D+
The Safest States for Homebuyers
| Rank | State | Avg Score | Grade | % A or B ZIPs |
|---|---|---|---|---|
| 1 | Hawaii | 84 | B | 98% |
| 2 | South Carolina | 83 | B | 84% |
| 3 | Delaware | 82 | B | 97% |
| 4 | Texas | 82 | B | 86% |
| 5 | Arkansas | 81 | B | 88% |
| 6 | Georgia | 81 | B | 83% |
| 7 | Mississippi | 81 | B | 84% |
| 8 | Oregon | 81 | B | 87% |
| 9 | Washington | 81 | B | 80% |
| 10 | Michigan | 79 | B | 77% |
Hawaii leads with a 98% A/B rate — nearly every ZIP code in the state earns a passing grade. This reflects newer infrastructure (much of Hawaii's development came after WWII), volcanic geology that limits certain contaminants, and strong state-level water management.
South Carolina and Delaware may surprise people. Both benefit from relatively newer housing stock compared to the Northeast, lower industrial legacy contamination, and consistent regulatory enforcement.
Texas ranking 4th — despite leading the nation in enforcement actions — illustrates an important nuance: enforcement activity means regulators are engaged. The violations are being addressed, not ignored.
The Riskiest States for Homebuyers
| Rank | State | Avg Score | Grade | % A or B ZIPs |
|---|---|---|---|---|
| 51 | Pennsylvania | 56 | C | 15% |
| 50 | Montana | 58 | C | 14% |
| 49 | New York | 59 | C | 23% |
| 48 | Iowa | 60 | C | 10% |
| 47 | Colorado | 61 | C | 11% |
| 46 | Illinois | 61 | C | 25% |
| 45 | Maine | 61 | C | 20% |
| 44 | North Dakota | 61 | C | 20% |
| 43 | Wyoming | 61 | C | 10% |
| 42 | Indiana | 62 | C | 26% |
Pennsylvania sits at the bottom with only 15% of ZIP codes earning A or B grades. The state's industrial history (steel, coal, mining), aging infrastructure, and widespread lead service lines create a challenging baseline that decades of investment haven't overcome.
Iowa and Wyoming are concerning for a different reason — only 10% of their ZIP codes earn passing grades, suggesting systemic infrastructure challenges affecting nearly every community.
Metro-Level Insights
State averages obscure metro-level variation. Here's what homebuyers should know about specific metropolitan areas:
Best Metros
Houston — Texas's strong state average extends to Houston, where most ZIP codes earn B grades or higher. Newer infrastructure from post-1970s development helps.
Atlanta — Georgia's 83% A/B rate is visible across metro Atlanta. Suburban ZIP codes particularly benefit from modern water systems built during rapid growth periods.
Seattle — Washington's 80% A/B rate and strong regulatory environment make Seattle-area ZIP codes among the safest on the West Coast.
Metros Requiring Extra Caution
Pittsburgh / Philadelphia — Pennsylvania's 15% A/B rate means most Philadelphia and Pittsburgh ZIP codes have C grades or worse. Pre-1950 infrastructure and industrial contamination are the primary drivers.
Chicago — Illinois averages a 61 score with only 25% A/B ZIPs. Chicago's lead service line problem is among the nation's worst, with an estimated 400,000 lead pipes still in service.
New York — Despite massive investment in water infrastructure, New York state averages only 59 with 23% A/B ZIPs. The city's century-old distribution system and surrounding industrial legacy weigh heavily on scores.
Denver — Colorado's 11% A/B rate means most Front Range communities have mediocre safety scores, driven by geological contamination (arsenic, uranium) and high-altitude infrastructure challenges.
What Smart Homebuyers Do Differently
Before You Choose a Metro
Check the state baseline. If you're choosing between metros in different states, the state-level safety profile gives you a starting point. Moving from Illinois to Georgia isn't just a climate change — it's an infrastructure upgrade.
Don't generalize from the metro. Within any metro, ZIP-code-level variation is enormous. A safe ZIP code can border an unsafe one. Always check the specific ZIP.
After You Choose a Neighborhood
Run the ZIP code report. Enter any ZIP at ZipCheckup for the full safety profile — water quality, lead risk, flood exposure, enforcement history, and infrastructure age.
Compare with neighbors. Our compare tool lets you check adjacent ZIP codes. Some areas show dramatic differences across ZIP code boundaries due to different water systems.
Factor safety into negotiation. A low safety score is a material fact. It may justify a lower offer price, a seller-funded water test, or a filtration system credit.
The Data Behind the Rankings
Our safety scores incorporate:
- Water quality violations — EPA SDWIS records of drinking water standard exceedances
- Enforcement actions — EPA ECHO records of regulatory action
- Lead exposure risk — Housing age, service line data, and lead detection history
- Flood risk — FEMA flood claims and zone designations
- Contaminant profiles — PFAS, arsenic, nitrate, and other specific contaminant detections
- Infrastructure age — Census median housing year as a proxy for pipe and system age
Our score also factors in utility-level transparency: from the 5,572 public utilities tracked in the CCR Rich Dataset, only 51.2% disclose a customer-service phone number and 27.9% publish a website in their published CCR — a baseline metric for how reachable a utility is when something goes wrong.
Every score is calculated from public data, updated continuously, and available for free at ZipCheckup. No metro is uniformly safe or unsafe — the point is to give homebuyers the data to make informed decisions at the ZIP code level.
Methodology: State and metro rankings are based on the average ZipCheckup safety score across all ZIP codes in each geography. Safety scores (0-100) incorporate EPA SDWIS violations, ECHO enforcement, lead risk, flood history, and infrastructure age. "% A or B" indicates the share of ZIP codes scoring 70+ (B) or 85+ (A). Data covers 29,218 ZIP codes across 51 states/territories. Current as of March 2026.
Frequently Asked Questions
Which metro areas have the safest water and home safety?
Based on our analysis, metros in the Southeast and Pacific Northwest tend to score highest. Hawaii, South Carolina, Delaware, Texas, and Arkansas lead state-level rankings with average scores of 81-84 and the highest percentages of A/B-grade ZIP codes.
Which metros should homebuyers be most cautious about?
Pennsylvania (avg score 56), Montana (58), New York (59), Iowa (60), and Colorado (61) have the lowest average safety scores. Homebuyers in these states should pay extra attention to individual ZIP code reports, as conditions can vary dramatically even within a single metro.
Does a metro's safety score predict property values?
Not reliably. Our wealth paradox analysis found 633 affluent ZIP codes with poor safety grades. Metro-level scores reflect infrastructure quality, regulatory enforcement, and geological conditions — factors that correlate loosely with economic activity but not directly with property values.
How often do metro rankings change?
Rankings shift as new violation data, enforcement actions, and infrastructure assessments are published. Major changes typically follow EPA enforcement sweeps, infrastructure investments, or contamination discoveries. ZipCheckup updates data continuously as EPA publishes new records.