Contaminant Candidate List 2 - CCL 2
On February 23, 2005, EPA announced the Second Drinking Water Contaminant Candidate List (CCL 2) and our efforts to expand and strengthen the underlying CCL listing process to be used for future CCLs.
On this page:
Microbial Contaminant Candidates
- Adenoviruses
- Aeromonas hydrophila
- Caliciviruses
- Coxsackieviruses
- Cyanobacteria (blue-green algae), other freshwater algae, and their toxins
- Echoviruses
- Helicobacter pylori
- Microsporidia (Enterocytozoon & Septata)
- Mycobacterium avium complex (MAC)
Chemical Contaminant Candidates
| Chemical Contaminant | CASRN1 |
|---|---|
| 1,1,2,2-tetrachloroethane | 79-34-5 |
| 1,2,4-trimethylbenzene | 95-63-6 |
| 1,1-dichloroethane | 75-34-3 |
| 1,1-dichloropropene | 563-58-6 |
| 1,2-diphenylhydrazine | 122-66-7 |
| 1,3-dichloropropane | 142-28-9 |
| 1,3-dichloropropene | 542-75-6 |
| 2,4,6-trichlorophenol | 88-06-2 |
| 2,2-dichloropropane | 594-20-7 |
| 2,4-dichlorophenol | 120-83-2 |
| 2,4-dinitrophenol | 51-28-5 |
| 2,4-dinitrotoluene | 121-14-2 |
| 2,6-dinitrotoluene | 606-20-2 |
| 2-methyl-Phenol (o-cresol) | 95-48-7 |
| Acetochlor | 34256-82-1 |
| Alachlor ESA & other acetanilide pesticide degradation products | N/A |
| Aluminum | 7429-90-5 |
| Boron | 7440-42-8 |
| Bromobenzene | 108-86-1 |
| DCPA mono-acid degradate | 887-54-7 |
| DCPA di-acid degradate | 2136-79-0 |
| DDE | 72-55-9 |
| Diazinon | 333-41-5 |
| Disulfoton | 298-04-4 |
| Diuron | 330-54-1 |
| EPTC (s-ethyl-dipropylthiocarbamate) | 759-94-4 |
| Fonofos | 944-22-9 |
| p-Isopropyltoluene (p-cymene) | 99-87-6 |
| Linuron | 330-55-2 |
| Methyl bromide | 74-83-9 |
| Methyl-t-butyl ether (MTBE) | 1634-04-4 |
| Metolachlor | 51218-45-2 |
| Molinate | 2212-67-1 |
| Nitrobenzene | 98-95-3 |
| Organotins | N/A |
| Perchlorate | 14797-73-0 |
| Prometon | 1610-18-0 |
| RDX | 121-82-4 |
| Terbacil | 5902-51-2 |
| Terbufos | 13071-79-9 |
| Triazines & degradation products of triazines | including, but not limited to cyanazine (21725-46-2) and atrazine-desethyl (6190-65-4) |
| Vanadium | 7440-62-2 |
Notes
1 Chemical Abstract Service Registry Number (CASRN#) - Chemical abstract service registry numbers are used in reference works, databases, and regulatory compliance documents by many organizations around the world to identify substances with a standardized name.