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Data sources

Every record has a source.

Envyrofax holds 5,528,130 records from 17 bulk government datasets in its own database, 1,697,451 of them mapped to exact coordinates, and queries 7 more agency services live at scan time.

U.S. EPA

UCMR 5 drinking water PFAS and lithium results (final)

29 PFAS compounds plus lithium sampled at public water systems, 2023-2025

Records
1,992,002
Refresh
static
Data as of
2026-08-27
Agency source

U.S. EPA

ECHO Exporter (regulated facilities, compliance and enforcement)

Active facilities: TRI reporters, hazardous waste (RCRA LQG/SQG/transporters), NPDES dischargers, Clean Air Act permits, GHG reporters

Records
931,134
Refresh
weekly
Data as of
2026-09-28
Agency source

NOAA National Centers for Environmental Information

NOAA Storm Events Database (2015-present)

Floods, flash floods, hurricanes, tornadoes, hail, wildfire, heat and winter storms with dates, damage and casualties

Records
750,889
Refresh
monthly
Data as of
2026-09-28
Agency source

U.S. DOT / FHWA / BTS

National Highway System (NTAD)

Interstates and principal highways for traffic exposure distance

Records
492,005
Refresh
annual
Data as of
2026-09-28
Agency source

U.S. EPA

Toxics Release Inventory (TRI) Basic Data, 2020-2024

Chemical-level on-site releases (air, water, land) for every TRI-reporting facility

Records
392,878
Refresh
annual
Data as of
2024-12-31
Agency source

U.S. DOT / BTS / FRA

North American Rail Network lines and grade crossings (NTAD)

Active rail lines (mainline flagged) and public at-grade crossings

Records
291,963
Refresh
annual
Data as of
2026-09-28
Agency source

U.S. Geological Survey

USGS earthquake catalog (M2.5+, 2000-present)

Every magnitude 2.5+ earthquake in and around the U.S. since 2000

Records
256,227
Refresh
weekly
Data as of
2026-09-28
Agency source

U.S. EPA

NPDES outfalls (permitted wastewater discharge points)

Discharge points with receiving water, limited pollutants, reported loads and combined sewer overflow flags

Records
205,734
Refresh
weekly
Data as of
2026-09-28
Agency source

Centers for Disease Control and Prevention

CDC PLACES: local chronic disease estimates (census tracts, 2025 release)

Model-based adult prevalence of asthma, COPD, cancer, heart disease, stroke, diabetes and more for every census tract

Records
83,522
Refresh
annual
Data as of
2025-12-31
Agency source

U.S. EPA

Safe Drinking Water Information System (SDWIS) via ECHO

Active community water systems, population served, 5-year health-based and monitoring violations, lead and copper rule violations

Records
49,378
Refresh
quarterly
Data as of
2026-07-09
Agency source

U.S. EPA

Brownfields properties (ACRES via FRS)

Properties with known or suspected contamination assessed or cleaned up with EPA Brownfields grants

Records
41,825
Refresh
monthly
Data as of
2026-09-28
Agency source

U.S. DOT / FAA / BTS

FAA aviation facilities (NTAD)

Operational airports, heliports and seaplane bases; commercial service (Part 139) flagged

Records
19,113
Refresh
monthly
Data as of
2026-09-28
Agency source

U.S. Energy Information Administration

EIA power plants (Form EIA-860)

Operating power plants 1 MW and larger by primary fuel and capacity

Records
10,847
Refresh
annual
Data as of
2021-08-01
Agency source

U.S. EPA

EPA AirToxScreen 2020 (air toxics cancer risk, county)

Modeled lifetime cancer risk per million from breathing air toxics; screening estimate, not a measurement at any one home

Records
3,222
Refresh
static
Data as of
2020-12-31
Agency source

U.S. EPA

EPA Map of Radon Zones

County-level radon potential. Zone 1 highest. Only a test can show a home's actual radon level.

Records
3,119
Refresh
static
Data as of
1993-09-01
Agency source

U.S. EPA

EPA AirData annual concentrations and county AQI

Measured PM2.5, ozone, NO2, PM10, SO2 at regulatory monitors; county AQI day counts

Records
2,432
Refresh
annual
Data as of
2025-12-31
Agency source

U.S. EPA

Superfund National Priorities List sites

Final, proposed and deleted NPL sites with status and cleanup milestones

Records
1,840
Refresh
monthly
Data as of
2026-09-28
Agency source

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