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 March 2026, 22.8% of cataloged U.S. water service lines remain classified as unknown material in EPA SDWIS, while 97.8% of reporting systems…

Lead Pipe Inventory: Quarterly Movement

Between 2025Q4 and 2026Q1, EPA SDWIS records show a net change of -4,901 lead lines and -1,054,200 unknown-material lines, with 734 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 1,055,987 unknown-material service lines reclassified between 2025Q4 and 2026Q1, as of March 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 June 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.