Data hubs

Contamination Map Hubs

Three map entry points, organized by contaminant type. Each hub carries a page for every state and province, built from public agency records and refreshed on a published schedule.

PFAS

PFAS Contamination Map

Public water system detections under UCMR 5, systems above the 2024 federal limits, and Canadian federal sites listing PFAS, with a page for every state and province.

United States (51)

Canada (13)

Newfoundland and Labrador

Northwest Territories

Petroleum hydrocarbons

Hydrocarbon Contamination Map

Open petroleum release records, cleanup backlog, and the soil and groundwater standards each regulator applies to gasoline, diesel, fuel oil, and waste oil sites.

Open the hydrocarbon map

United States (51)

Canada (13)

Newfoundland and Labrador

Northwest Territories

Military and munitions

Military Contaminated Sites Map

Formerly used defense sites in the United States and National Defence contaminated sites in Canada, with status filters and a page for every state and province.

Open the military sites map

United States (53)

Canada (13)

Newfoundland and Labrador

Northwest Territories

Services behind the data

What we do about the sites on these maps

Each hub has a treatment route behind it. These pages set out the remedy, how it is verified, and what is left on site afterwards.

PFAS thermal destructionBreaking the carbon-fluorine bond instead of concentrating PFAS onto a medium. Pilot-validated, NATO test bed.

Thermal desorption soil remediationDirect and indirect-fired treatment of hydrocarbon, PAH, PCB, and dioxin-impacted soil on the site itself.

Thermal remediation contractorWhat to ask before awarding, including mobilization to remote, northern, and secured military sites.

Soil remediation servicesCharacterization through treatment, verification, and the closure package the regulator accepts.

PFAS remediation servicesCapture, residuals, and the destruction step that lets a PFAS file actually close.

Vapor intrusion source treatmentSub-slab depressurization design, installation, and the verification record a regulator accepts.

Stabilization and solidificationImmobilizing metals where destruction is not possible, and why organics are treated differently.

Provenance layer

Where the numbers come from

Every count on these maps traces back to a named public dataset, a release date, and a licence. The data layer documents each source, the refresh cadence, and the method used to normalize it.

Data index

Methodology

Contaminants we treat