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MS Department of Environmental Quality

Free

Mississippi Department of Environmental Quality MUSTER (UST + CERCLA) and 2024 Impaired Waters via agency host. 5 curated layers covering petroleum tank sites, brownfield/CERCLA sites, 303(d) impaired waters, and completed TMDLs. No credentials required.

environmentalustcerclabrownfieldsimpaired-waterstmdlmississippims-mdeq
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No key required. Included on Free.

What you can ask

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

About this source

Mississippi Department of Environmental Quality MUSTER (UST + CERCLA) and 2024 Impaired Waters via opcgis.deq.state.ms.us. 5 curated layers covering petroleum tank sites, brownfield/CERCLA sites, 303(d) impaired waters, and completed TMDLs. - searchUSTSites ⭐ 11.9K active+inactive UST facilities - searchCERCLASites ⭐ 2.28K state CERCLA / brownfields with NPL flags - searchImpairedWaters ⭐ 233 streams + 4 polygons on the 2024 303(d) list - searchTmdlCompleted, getServiceInfo §0 caught: MUSTER does NOT support offset paging — handler iterates by OBJECTID. 5 scale-tier duplicate UST layers — only layer 10 exposed. BASIN column mixes UPPER and Title Case. POLLUTANT has numeric-prefix duplicates. Host has been historically flaky — handler retries once on 5xx/HTML.

Connector ID ms-mdeq

Provenance

PublisherMS Department of Environmental Quality
API basehttps://opcgis.deq.state.ms.us/opcgis/rest/services

Freshness & coverage

FreshnessFreshness not declared
GeographicNot declared
TemporalNot declared
AuthenticationNo credentials required

› Methods (5)

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

  • searchUSTSites

    read

    MS UST sites (~11.9K). Filter county (Title Case), status, releaseStatus, facilityName, city.

    No offset paging — uses OBJECTID. Layer 10 = active+inactive unified.

  • searchCERCLASites

    read

    MS CERCLA + Brownfields (~2.28K). Filter county/stateStatus/federalStatus/cleanupType.

    stateStatus: Active/Inactive/BNFA/SNFA. cleanupType: VEP/BF/TBA.

  • searchImpairedWaters

    read

    2024 303(d) impaired waters. geometry: lines (233) | polygons (4).

    Filter pollutant/basin/waterBodyName. BASIN casing inconsistent upstream.

  • searchTmdlCompleted

    read

    TMDL completed streams (~621 polylines). Filter basin/pollutant/waterBodyName.

  • getServiceInfo

    read

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