| WCW2fuel - Crawfordsville Facility | Crawfordsville | IA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| CMContinental Manufacturing Chemist INC | Madrid | IA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| SPSioux Pharm INC | Sioux Center | IA | Chemical Manufacturing325412 | 1-19 | ◇ UNVERIFIED |
| AYAco Yp INC | Riverdale | IA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| APAg Partners | Albert City | IA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| AFAgvantage Fs, INC - Alburnett 8336 | Alburnett | IA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| ABAllen Blasting and Coating | Burlington | IA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| AAAspen Api INC | Sioux City | IA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| BCBayer Cropscience LP | Des Moines | IA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| BTBeneficial Technologies LLC - Camanche | Camanche | IA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| CCCar-freshner Corporation | De Witt | IA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| CLChemorse LTD | Des Moines | IA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| CChem-tech (neogen) | Pleasantville | IA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| COCity of Davenport Composting Facility | Davenport | IA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| DVDiamond Vogel Paints | Marshalltown | IA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| FEFarmers Elevator Cooperative - Rock Valley Nh3 | Rock Valley | IA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| FHFlint Hills Resources - Davenport | Davenport | IA | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| FHFlint Hills Resources Menlo, LLC | Menlo | IA | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| HCHawkins Camanche, Ia | Camanche | IA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| HCHeartland Co-op Evansville | Indianola | IA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| HIHigley Industries | Dubuque | IA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| HEHillside Estates Care Facility (now Bayer Production Supply) | Williamsburg | IA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| IEIowa E.p.s. Products, INC - Des Moines | Des Moines | IA | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| KSK.a. Steel Chemicals INC. | Muscatine | IA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| KFKoch Fertilizer, LLC - Garner Terminal | Garner | IA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| KNKoch Nitrogen Company, LLC - Marshalltown Terminal | Marshalltown | IA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| LCLandus Cooperative - Churdan | Churdan | IA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| LCLandus Cooperative - Lake City | Lake City | IA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| LILinde, INC. | Muscatine | IA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| LILloyd INC | Shenandoah | IA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| NPNational Purity LLC | Britt | IA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| NANovartis Animal Health US INC | Larchwood | IA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| PNPcs Nitrogen Fertilizer - Clinton Plant | Camanche | IA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| PPioneer | Johnston | IA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PDPoet Dsm Project Liberty LLC | Emmetsburg | IA | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| PAPpg Architectural Finishes INC | Des Moines | IA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SEStoller Enterprises-cedar Rapids | Cedar Rapids | IA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| TPTrajet Products, INC | Glenwood | IA | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| TETwin-state Engineering & Chemical CO | Walcott | IA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| TSTwin State, Inc.- Durant | Durant | IA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| UFUnited Farmers Cooperative - Lenox Plant | Lenox | IA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| VDVan Diest Supply Company | Gilmore City | IA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| CNCfs North America LLC | Urbandale | IA | Chemical Manufacturing325199 | 1-19 | ◇ UNVERIFIED |
| CGChem Gro of Houghton INC. - Houghton Facility | Houghton | IA | Chemical Manufacturing325314 | 20-99 | ◇ UNVERIFIED |
| ELEco Lips, Inc. | Marion | IA | Chemical Manufacturing325412 | 20-99 | ◇ UNVERIFIED |
| JDJBI Distributors LLC | Red Oak | IA | Chemical Manufacturing325612 | 1-19 | ◇ UNVERIFIED |
| APAir Products and Chemicals Inc—bettendorf Nitrogen Plant Located Within Arconic | Bettendorf | IA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| APAir Products and Chemicals INC - Co2 Recovery Plant | Council Bluffs | IA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| APAir Products and Chemicals, INC. Co2 Recovery Plant | Nevada | IA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| BRBrightmark Rng Facility - Black Soil | Granville | IA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
