Hamilton County, OH
The federal environmental record for Hamilton County (population 827,058): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
50
federal cleanup sites
4
PFAS-detecting water systems
78
TRI facilities
155
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Pristine, Inc. | Reading | on the NPL | 09/08/1983 |
Drinking water: PFAS testing
Public water systems serving Hamilton with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| INDIAN HILL CITY PWS OH3101112 | PFOS: 12.4 ng/L PFBA: 5.7 ng/L PFPeA: 4.8 ng/L | above final limit |
| CINCINNATI PUBLIC WATER SYSTEM OH3102612 | PFOS: 6.1 ng/L PFBA: 5.2 ng/L PFBS: 4.1 ng/L | above final limit |
| READING CITY PWS OH3101812 | PFPeA: 4.9 ng/L | detected |
| CINCINNATI CHILDRENS HOSP IONIZATION SYS OH3139912 | PFPeA: 11.2 ng/L HFPO-DA: 6.3 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
78 facilities in Hamilton filed TRI reports for 2024, totalling 2.4M lb released. The 25 largest by volume:
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| MIAMI FORT POWER CO LLC | NORTH BEND | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 542k lb |
| EMERY OLEOCHEMICALS LLC CINCINNATI PLANT | CINCINNATI | Ethylene glycol, Nickel And Nickel Compounds | 323k lb |
| INEOS USA LLC | ADDYSTON | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Sodium nitrite | 238k lb |
| AMERICAN CRAFT BREWERY LLC | CINCINNATI | Nitric acid, Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 202k lb |
| ENVIRONMENTAL ENTERPRISES INC | CINCINNATI | Nitric acid, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | 201k lb |
| AMPAC PLASTICS LLC | CINCINNATI | Ozone | 130k lb |
| EMD MILLIPORE CORP | CINCINNATI | Dichloromethane, Chloroform | 119k lb |
| BASF CORP | CINCINNATI | Methanol, Ethylene glycol | 74k lb |
| KELLANOVA - CINCINNATI BAKERY | CINCINNATI | Ammonia | 66k lb |
| DUBOIS CHEMICALS INC. - SHARONVILLE OH (50) | CINCINNATI | Sodium nitrite, Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 63k lb |
| SCHLAGE LOCK CO LLC | CINCINNATI | Certain glycol ethers, sec-Butyl alcohol | 56k lb |
| KOST USA | CINCINNATI | Ethylene glycol | 54k lb |
| SOLVAY USA INC | CINCINNATI | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ammonia | 38k lb |
| SPRING GROVE RESOURCE RECOVERY | CINCINNATI | Polycyclic aromatic compounds, Polychlorinated biphenyls | 37k lb |
| TRAMMO NITROGEN PRODUCTS INC. C/O LEMM CORP - OPERAT | NORTH BEND | Ammonia, Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 19k lb |
| CONSOLIDATED METAL PRODUCTS | CINCINNATI | Certain glycol ethers, Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 19k lb |
| SHERWIN-WILLIAMS CO | CINCINNATI | Diisocyanates, 4,4'-Isopropylidenediphenol | 18k lb |
| CATEXEL NEASE LLC | HARRISON | Xylene (mixed isomers), Toluene | 16k lb |
| MICRO METAL FINISHING LLC | CINCINNATI | Zinc compounds, Nickel And Nickel Compounds | 16k lb |
| NEXPERA FORT HILL PLANT | NORTH BEND | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 16k lb |
| SUPERALLOY MANUFACTURING SOLUTIONS CORP PLANT 2 & 3 | CINCINNATI | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nickel And Nickel Compounds | 15k lb |
| FORMICA CORP | CINCINNATI | Formaldehyde, Phenol | 15k lb |
| BAERLOCHER PRODUCTION USA LLC | CINCINNATI | Zinc compounds, Barium And Barium Compounds | 15k lb |
| GE ENGINE SERVICES ACSC/C CONTAINER PL. | CINCINNATI | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nickel | 10k lb |
| LEGRAND AV BLUE ASH | CINCINNATI | Antimony, Zinc compounds | 9k lb |
Underground fuel tanks
EPA's UST Finder records 1,661 tank facilities in Hamilton: 1,150 tanks in service and 3,695 closed. 2,364 fuel releases are on record, of which 155 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Hamilton as Zone 1, the highest predicted indoor radon levels (over 4 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Hamilton, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- 750 WEST THIRD STREET SITECINCINNATI
- AMERICAN TISSUE SITELOCKLAND
- BANK AVENUE LANDFILLST. BERNARD
- BEDINGHAUS BUSINESS FORMSCINCINNATI
- CENTER HILL LANDFILL EMERGENCY RESPONSECINCINNATI
- CINCINNATI DIE CAST SITECINCINNATI
- CINCINNATI MALATHION SITECINCINNATI
- CINCINNATI STYRENE RESPONSECINCINNATI
- CITY BUMPER SITECINCINNATI
- CONNECTOR INDUSTRIES OF AMERICALOCKLAND
- DOVER ELEVATOR SYSTEMSCINCINNATI
- DUPONT LOCKLAND WORKSLOCKLAND
- ESTE AVENUE DUMPCINCINNATI
- FARWICK FIELDS LEAD SITEMIAMITOWN
- FEED MATERIALS PRODUCTION CENTER (USDOE)FERNALD
- FLINT GROUP PIGMENTSCINCINNATI
- GEM CITY ENGINEERING CO, DAYTON, LEO STDAYTON
- GIVEN ROAD LEAD SITEINDIAN HILL
- GREEN INDUSTRIESCINCINNATI
- GREEN STATE RECYCLING SITESAINT BERNARD
- HERRON AVENUE DRUM SITECINCINNATI
- HUDEPOHL SITECINCINNATI
- KINDER MORGAN EMERGENCY RESPONSECINCINNATI
- LINN STREET VOC SITECINCINNATI
- LOUIS B. GREEN TRUST PROPERTYCINCINNATI
- LUNKENHEIMER OFFICE BUILDINGCINCINNATI
- MOUNT HEALTHY MERCURY RESPONSEMOUNT HEALTHY
- NORTH COLLEGE HILL MERCURY RESPONSECINCINNATI
- NORTHSIDE HEALTH CENTER MERCURYCINCINNATI
- NORWOOD RADIATOR SITENORWOOD
- PERRY & DERRICK PAINT SITENORWOOD
- POTTER STEWART U.S. COURTHOUSECINCINNATI
- PRISTINE, INC.READING
- PURECYCLE, INCORPORATIONCINCINNATI
- QUEEN CITY BARREL CO.CINCINNATI
- ROSE EXTERMINATOR COMPANY WAREHOUSENORWOOD
- ROSS PARK TAR SITECINCINNATI
- RUMPKE SANITARY LANDFILLCINCINNATI
- SCHULTE METALS SITECINCINNATI
- SETON AVENUE SITECINCINNATI
- SHARONVILLE MERCURY RESPONSEWEST CHESTER
- ST. BERNARD RESIDENTIAL TAR SITESAINT BERNARD
- TUXEDO PLACE WAREHOUSE SITECINCINNATI
- U.S. DEFENSE LOGISTICS AGENCY CINCINNATI FUEL SUPPORT POINTCINCINNATI
- U.S. DOE FERNALD ENVIRONMENTAL MANAGEMENT PROJECTHARRISON
- US AIR FORCE AFP PLT 36EVENDALE
- US EPA CENTER HILL LABORATORYCINCINNATI
- US EPA ENVIRONMENTAL RESEARCH CENTERCINCINNATI
- US EPA TEST AND EVALUATION FACILITYCINCINNATI
- VINE STREET MERCURY SPILLELMWOOD PLACE