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MT Department of Environmental Quality

Free

Montana Department of Environmental Quality USTs, petroleum tank releases, MPDES water permits, hourly air-quality monitoring, and hazardous-waste handlers via agency host 5 curated layers covering 1.1K USTs, 4.5K PTC releases, 2.7K water permits, 21M+ air-quality readings, and 3K RCRA generators. No credentials required.

environmentalusttank-releaseswater-permitsair-qualityhazardous-wastemontanamt-deq
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No key required. Included on Free.

What you can ask

  • “What does MT Department of Environmental Quality have for the area or asset I'm working on?”
  • “Pull the most recent MT Department of Environmental Quality records and put them in a table.”
  • “What does MT Department of Environmental Quality cover, and how fresh is the data?”

About this source

Montana Department of Environmental Quality USTs + petroleum tank releases + MPDES water permits + air-quality monitoring + hazardous waste via gis.mtdeq.us/hosting. - searchUSTFacilities ⭐ 1.1K UST facility registry - searchTankReleases ⭐ 4.5K PTC cleanup events (Resolved/Open/Rescinded/Reopened) - searchWaterPermits ⭐ 2.7K MPDES discharge permits across 27 types - searchAirQualityMonitors ⭐ 21M hourly AQS readings (33 sites, PM25/O3/NO2/...) - searchHazardousWaste 3K RCRA generators §0: Native CRS 32100 (MT State Plane); outSR=4326. Host historically flaky — handler retries once. Most layers have NO county column (only Hazardous Waste does).

Connector ID mt-deq

Provenance

PublisherMT Department of Environmental Quality
API basehttps://gis.mtdeq.us/hosting/rest/services/Hosted

Freshness & coverage

FreshnessFreshness not declared
GeographicNot declared
TemporalNot declared
AuthenticationNo credentials required

› Methods (6)

Technical detail for developers: parameters, pagination, units, and freshness per method.

  • searchUSTFacilities

    read

    MT UST facility registry (~1.1K). Filter facilityName/city/zip/facilityCode.

    No county column — use bbox/near for spatial.

  • searchTankReleases

    read

    MT PTC Releases (~4.5K). Filter status/leadProgram/facilityName/cause/source/dates.

    Status: Resolved/Open/Rescinded/Reopened. Lead programs PTC + CPRS.

  • searchWaterPermits

    read

    MT FACTS MPDES Permits (~2.7K). Filter permitType/status/permittee/siteName/city/expiringBefore.

    27 permit types; status Effective/Expired/Admin Continued.

  • searchAirQualityMonitors

    read

    MT Air Quality hourly (~21.3M). Filter parameter/siteName/healthCategory/aqsCode/dates.

    Always narrow with parameter+site+date. Newest-first ordering.

  • searchHazardousWaste

    read

    MT RCRA Hazardous Waste (~3.1K). Filter county/city/facilityName/generatorStatus/epaCode/naicsCode.

    Has fac_county UPPERCASE. gen_status: LQG/SQG/VSQG/+.

  • getServiceInfo

    read

    Schema, record counts, max-page caps, enum values, §0 probe notes for any of 5 layers.