Findings - Canonical U.S. Home-Safety Statistics

Citable, canonical statistics on U.S. home safety - lead pipes, PFAS, drinking-water violations - recomputed from federal data each build.

The U.S. Lead Pipe Inventory Gap

As of June 2026, 21.9% of cataloged U.S. water service lines remain classified as unknown material in EPA SDWIS, while 97.9% of reporting systems…

Lead Pipe Inventory: Quarterly Movement

Between 2026Q1 and 2026Q2, EPA SDWIS records show a net change of +194,299 lead lines and -623,674 unknown-material lines, with 1,526 systems…

Estimated U.S. Lead Pipe Replacement Cost

Replacing the 1,952,290 known lead lines and 995,332 galvanized lines cataloged in EPA data carries an estimated $13.85 billion cost, as of May 2026.

The PFAS Testing Coverage Gap

24.3% of cataloged U.S. ZIP codes have at least one PFAS test on record in EPA UCMR5 data; 30,679 ZIP codes have none.

PFAS Detection and Exceedance Rates

Among the 10,297 water systems EPA tested for PFAS under UCMR5, 34.4% had a detection and 16.7% exceeded an EPA maximum contaminant level, as of…

Lead Inventory Progress by State

Across 50 states, EPA SDWIS records show 624,090 unknown-material service lines reclassified between 2026Q1 and 2026Q2, as of June 2026.

EPA Drinking Water Violations on Record

EPA records show 275,456 drinking-water violations on record across U.S. ZIP codes in the Safe Drinking Water Information System.

The Average U.S. Home Safety Score

The average U.S. ZIP code scores 67 out of 100 — a C grade — on ZipCheckup’s Home Safety composite, across 41,344 ZIP codes as of July 2026.

Leaking Underground Storage Tanks on Record

EPA records show 43,801 underground storage tanks with open leaking-tank cases across the United States.

FEMA Flood Insurance Claims Paid

FEMA records show $88,253,960,587 paid in flood-insurance claims across U.S. ZIP codes.

USGS-Monitored Groundwater Wells

USGS records show 506,398 groundwater monitoring wells across U.S. ZIP codes.

ZIP Codes With Unresolved Water Violations

EPA records show 15,468 ZIP codes with at least one unresolved drinking-water violation across the United States.

TRI Toxic Chemical Releases on Record

EPA records show 3,402M lbs of chemical releases reported annually to the Toxics Release Inventory.

ZipCheckup's National Data-Anomaly Scan

ZipCheckup's automated scan flagged 21,669 data patterns across 42,680 U.S. ZIP codes, sorted into 10 categories, as of July 2026.

Drinking-Water Violations by Contaminant

EPA records 6,897 drinking-water violations across 7 regulated contaminants, as of March 2026.

PFAS Results by State

Among 10,296 water systems with PFAS results, 662 (6.4%) report an exceedance, across 57 states and U.S. jurisdictions, as of May 2026.

Spanish-Language Access to Water Reports

6.0% of U.S. residents speak Spanish with limited English, and 2,360 ZIP codes (7.3%) meet California's 10% translation benchmark — yet federal…

Who Can Afford Lead & Water Remediation

For the typical covered U.S. ZIP code, estimated lead-and-water remediation costs $7,750 — about 10.6% of median household income — across 30,561…

Structurally Deficient Bridges by ZIP Code

In the typical U.S. ZIP code, 5.4% of nearby bridges are rated structurally deficient; 23.6% of 42,675 ZIP codes sit at or above 10%, as of March…

Social Vulnerability by ZIP Code

47.7% of the population in 32,428 ranked U.S. ZIP codes — 157,704,896 residents — lives in the most socially vulnerable quartile of the CDC/ATSDR…

Private-Well Arsenic Above the EPA Limit by ZIP Code

An estimated 2,101,644 people across 2,906 U.S. counties are served by private wells with arsenic above the EPA limit of 10 micrograms per liter —…

High-Hazard Dams by ZIP Code

16,896 dams across 50 states carry a high hazard-potential rating — failure would probably cause loss of life — and 2,646 are rated in poor or…

Tornadoes by ZIP Code

From 2015 through 2024, the U.S. recorded 14,898 county-level tornado events across 2,527 counties in 51 states, with 480 direct deaths and 6,036…

Large Hail and Damaging Wind by ZIP Code

From 2015 through 2024, the U.S. logged 70,148 large-hail events and 166,053 damaging thunderstorm-wind events across 3,091 counties, with 271…

Flash Floods and Flooding by ZIP Code

From 2015 through 2024, the U.S. logged 40,522 flash-flood events and 28,549 other flood events across 3,133 counties, with 1,133 direct deaths and…

Unhealthy Air Days by ZIP Code

In 2024, 535 of the 996 U.S. counties with air-quality monitors recorded at least one day when the air was unhealthy for sensitive groups or worse,…

Counties Above the Federal Air-Quality Standard by ZIP Code

As of June 2026, 171 of the 825 U.S. counties with an EPA air-quality monitor had a 2023-2025 design value above the federal standard for…

Fair Market Rent for a 2-Bedroom Home by ZIP Code

As of October 2024, HUD's Small Area Fair Market Rent for a 2-bedroom home ranges from $480 to $4,980 a month across the 38,642 ZIP codes HUD…

Federally Subsidized Housing by ZIP Code

As of December 2025, federal rental assistance through HUD reaches 23,017 ZIP codes, covering 5,118,148 subsidized housing units that are home to…

SNAP Food Retailers by ZIP Code

As of December 2025, 249,063 stores are authorized to accept SNAP across 23,939 ZIP codes, and in 3,594 of those ZIP codes no supermarket or grocery…

Landslide Susceptibility by ZIP Code

The USGS maps at least half the land as landslide-susceptible in 1,213 of 3,214 U.S. counties, and its national inventory documents 593,961…

Federal Rental Assistance by Program by ZIP Code

As of December 2025, of the 5,118,086 federally subsidized rental units HUD reports, 54.4% are Housing Choice Vouchers, 25.8% are project-based…