County page
Pima County
Pima County currently shows 1 Superfund site, 247 imported facility profiles, and 3,850,570 lbs in loaded TRI releases.
Overview
What this county page is saying
This live county page is generated from the ingested EPA datasets. It merges ECHO facility compliance rows, TRI release totals, and any Superfund sites attached to Pima County.
The latest loaded TRI year is 2024, with 3,850,570 lbs in county-level on-site releases tied to the imported facility set.
Focus points
Design and product notes
County pages combine facility compliance history with chemical release totals.
TRI chemistry shows what is being reported, while ECHO shows who keeps drawing enforcement attention.
Superfund records add legacy cleanup context even when live contaminant detail is still sparse.
Superfund layer
Cleanup sites in this county
Tucson International Airport Area
Tucson International Airport Area is in EPA's Superfund layer for Tucson, AZ. Live ingestion currently includes the official EPA detail links and geocoded site record.
Facilities
Worst polluters and compliance pressure
Asarco Llc Mission Mine Complex
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Silver Bell Mining Llc
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Capital Metal Finishing
Significant Violation across 12 of the last 12 quarters in the imported ECHO record.
Anway Manville Water Co
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Catalina Village - Tucson
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
La Casita Water Company 1-tp001 - Cl2
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
La Casita Water Company 2-tp001 - Cl2
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Las Quintas Serenas W C
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Lazy Acres Mhp
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Marana Dwid - Hunter/im
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Mesaland Water Co
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Mescal Lakes Water System
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Sahuarita Heights Mhp
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Sandario Water Company-tp001 - Cl2
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Sierra Court Trailer Park
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Silver Creek Phase Ii Lots 289-356
Significant noncompliance across 11 of the last 12 quarters in the imported ECHO record.
Valle Verde Del Norte
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Wells Fargo Water Company
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Calportland - Rillito Cement Plant
Significant noncompliance across 6 of the last 12 quarters in the imported ECHO record.
Federal Correctional Inst
Significant noncompliance across 10 of the last 12 quarters in the imported ECHO record.
| Chemical | Group | Facilities | Total pounds |
|---|---|---|---|
| Lead compounds | Metals and metal compounds | 10 | 2,837,075 lbs |
| Manganese | TRI-listed chemical | 3 | 388,676 lbs |
| Nickel | Metals and metal compounds | 5 | 226,041 lbs |
| Chromium | Metals and metal compounds | 5 | 101,693 lbs |
| Cobalt | TRI-listed chemical | 2 | 86,001 lbs |
| Arsenic | TRI-listed chemical | 1 | 86,000 lbs |
| Molybdenum trioxide | TRI-listed chemical | 1 | 22,800 lbs |
| Styrene | Volatile organic compound | 1 | 22,040 lbs |
| Copper compounds | TRI-listed chemical | 3 | 16,210 lbs |
| Ethylbenzene | Volatile organic compound | 2 | 11,498 lbs |
| Lead | Metals and metal compounds | 7 | 8,819 lbs |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | TRI-listed chemical | 2 | 8,104 lbs |
| n-Butyl alcohol | TRI-listed chemical | 1 | 8,050 lbs |
| Ammonia | TRI-listed chemical | 4 | 4,240 lbs |
| Mercury compounds | TRI-listed chemical | 4 | 4,165 lbs |
| Polycyclic aromatic compounds | TRI-listed chemical | 4 | 1,115 lbs |
| Chlorine | TRI-listed chemical | 1 | 750 lbs |
| Methanol | TRI-listed chemical | 2 | 252 lbs |
| Naphthalene | TRI-listed chemical | 4 | 217 lbs |
| Ethylene glycol | TRI-listed chemical | 1 | 10 lbs |
Violation pages
State-level violation context tied to this county
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Clean Air Act violations in Arizona
Arizona facilities in the imported ECHO data show air-program oversight, inspections, or noncompliance signals.
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Clean Water Act violations in Arizona
Arizona facilities in the imported ECHO data show water-permit pressure, inspections, or noncompliance signals.
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RCRA violations in Arizona
Arizona facilities in the imported ECHO data show hazardous-waste or RCRA oversight signals.