| air_emission_points_titleV | Air emission points for facilities in Iowa with operating permits for Title V of the Federal Clean Air Act, considered "major" permits | |
| Air_facilities | Air Quality Facilities | |
| Chemical_storage_facility_tier_2 | Tier II Chemical Storage Facilities | |
| contaminated_sites_facility | Contaminated Sites in Iowa | |
| environmental_facilities | Environmental Facilities in Iowa | |
| floodplain_permits | Flood Plain Development Permits in Iowa, Permitted by the DNR | |
| LUST_sites | Regulated, Leaking Underground Storage Tanks in Iowa | |
| National_priority_list | National Priority List Sites in Iowa | |
| Non_national_priority_list | Non-National Priority List Sites in Iowa | |
| solid_waste_land_application | Solid Waste Land Applications with Permits by the Iowa DNR | |
| solid_waste_permit_facilities | Solid Waste Management Facilities with Permits by the Iowa DNR | |
| spill_incidents | Spill incidents reported to Iowa DNR and tracked in the Hazardous Substance Incident database | |
| spill_materials | Materials released from spill incidents reported to Iowa DNR and tracked in the Hazardous Substance Incident database | |
| stormwater_facility_1_industrial | Storm Water General Permit 1 for Industrial Facilities | |
| stormwater_facility_2_construction | Storm Water General Permit 2 for Construction | |
| stormwater_facility_3_industrial_rock_asphalt | Storm Water General Permit 3 for Rock and Asphalt | |
| unsewered_communities | Unsewered Communities in Iowa | |
| UST_sites | Regulated Underground Storage Tanks in Iowa | |
| wastewater_industrial_contributor | Wastewater Industrial Contributors | |
| wastewater_NPDES_facility | Wastewater Treatment Facilities | |
| wastewater_outfalls | Wastewater Outfalls | |
| Wastewater_treatment_plants | Waste water treatment plants in Iowa |