| Answer | Crossword Clue |
|---|---|
| PCB | Chem. contaminant |
| PCB | Banned chem. contaminant |
| PARTSPERMILLION | Contaminant measure |
| ECOLI | Meat contaminant |
| PURE | Contaminant-free |
| ECOLI | Dangerous contaminant |
| REDTIDE | Shellfish contaminant |
| FLY | Ointment contaminant? |
| ECOLI | Slaughterhouse contaminant |
| ECOLI | Ground beef contaminant |
| PCB | Chemical contaminant, for short |
