Table 2. Antibiotic susceptibility of coliforms isolated from Yamuna River (Iso-Loc1) and Najafgarh Drain (Iso-Loc1A).
R: resistant, S: sensitive, I: intermediate
| Antibiotics | Iso-Loc1 | Iso-Loc1A | |
| Penicillins | Amoxicillin | R | R |
| Piperacillin | I | R | |
| Cephalosporins | Cephalothin | R | R |
| Cefixime | R | R | |
| Cefoperazone | I | R | |
| Ceftazidime | R | R | |
| Ceftriaxone | R | R | |
| Quinolones | Ciprofloxacin | I | I |
| Gemifloxacin | S | S | |
| Levofloxacin | S | S | |
| Lomefloxacin | S | I | |
| Norfloxacin | S | S | |
| Ofloxacin | S | I | |
| Macrolides | Azithromycin | R | R |
| Clarithromycin | S | R | |
| Roxithromycin | S | R | |
| Carbapenems | Imipenem | I | R |
| Meropenem | S | R | |
| Aminoglycosides | Gentamicin | S | S |
| Tobramycin | S | S | |
| Amikacin | S | S | |
| Kanamycin | S | I | |
| Streptomycin | S | R | |
| Polymyxins | Colistin | R | R |
| Amphenicols | Chloramphenicol | S | S |
| Oxazolidinones | Linezolid | S | R |