The data that answers it

Ranked by fit · best first
Texas Commission on Environmental Qua… Primary fit
Emergency Response Spills

The TCEQ endpoint publishes raw incident status (Closed or Referred), status date, investigation number where applicable, comments describing investigation or referral plans, and an action field describing how the incident will be managed.

Free API Subnational 18 fields
Illinois Environmental Protection Age… Primary fit
Office of Emergency Response Incidents

The tracker publishes incident status and status comments, Illinois EPA and other responders, actions, and additional actions for the incident.

Free APIFull file Subnational 12 fields
Oklahoma Corporation Commission Primary fit
OGCD Incidents

The layer publishes investigation date, enforcement status, referral agency and date, resolved date, violations, findings, recommendations, recovery amount, and reported-versus-confirmed environmental effects for the keyed incident.

Free APIFull file Subnational 20 fields
Connecticut Department of Energy and … Primary fit
Spill Incidents, January 1996–June 2022

The dataset publishes raw incident status, emergency measures, and corrective actions, with the action definition explicitly limited to what was known when the incident was reported.

Free APIFull file Subnational 15 fields
Massachusetts Department of Environme… Primary fit
Waste Site Cleanup Notifications and Status

MassDEP's public lookup reports where an RTN site is in the assessment and cleanup process and what has been done; the downloadable product publishes current status and linked actions, while harvested fields verify current-status date, phase, and RAO class. Report raw dated lifecycle values only; an RTN or unexplained status is not proof of open standing, completed cleanup, or adequate remediation.

Free Full file Subnational 10 fields
Hawaii Department of Health Strong fit
iHEER Public Incidents

The public iHEER API exposes raw response information and incident status alongside incident identity and dates. The public view may omit ongoing or coordinate-less incidents.

Free APIFull file Subnational 1 field
Virginia Department of Environmental … Strong fit
Petroleum Releases

For each keyed petroleum-release case, the public layer publishes raw status, priority, responsibility indicator, recovery or classification code, and case-closed date.

Free APIFull file Subnational 8 fields
Virginia Department of Environmental … Strong fit
PReP Pollution Reports

For each keyed pollution report, the public layer publishes incident closure date, raw response-status description, and raw status-reason description, alongside incident and receipt dates that pin the record chronology.

Free APIFull file Subnational 4 fields
North Carolina Department of Environm… Strong fit
Sanitary Sewer Overflows

The layer publishes a raw `Resolution (5-Day)` value for each incident together with report, start, and end dates.

Free APIFull file Subnational 13 fields
New York State Department of Environm… Strong fit
Spill Incidents

New York's archive publishes recovered amount and a Close Date whose official definition is that cleanup activity finished and all paperwork was completed, providing documented recovery and resolution milestones for a spill event. A blank Close Date is not an inferred open case, recovered zero may mean unknown, and the Source does not document investigation, enforcement, or remediation detail beyond these fields.

Free APIFull file Subnational 11 fields
West Virginia Department of Environme… Supporting fit
Leaking Aboveground Storage Tank Events

The combined reports provide the source report's Active-versus-Closed scope and a Cleanup Initiated Date for each keyed LAST event.

Free Full file Subnational 10 fields
Ohio Environmental Protection Agency Supporting fit
Spills and Releases As Reported to Ohio EPA (since May 2017)

The dataset publishes recovered product type, recovered amount, and recovered unit alongside the incident's reported date. Reports are not necessarily confirmed spills.

Free APIFull file Subnational 9 fields
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