Abstract
Pharmaceuticals have been recognized as contaminants of emerging concern
because of their ubiquitous presence in the environment and the
potential they possess in causing undesirable ecological effects. Many
long term ill effects of pharmaceuticals on humans are still unknown.
Pharmaceuticals are recalcitrant to wastewater treatment facilities and
their occurrence has been documented in almost all environmental
matrices around the globe. Every third pill consumed by the world is
synthesized in India, and despite that, much less attention and concern
is noticed in documenting pharmaceuticals occurrence report in the
Indian context. In Indian environment, pharmaceuticals have been
detected in influent and effluent of wastewater treatment plants,
surface waters and groundwater systems. Concentration of few
pharmaceuticals such as ciprofloxacin (31 mg/L) and fluconazole (236
mg/L) reported in wastewaters of Hyderabad city in India show the
highest values compared to pharmaceuticals concentration reported
elsewhere in the world. Other pharmaceutical compounds that are detected
in Indian matrix in mg/L range include cetirizine, losartan, and
voriconazole. Metoprolol (950 µg/L), enrofloxacin (900 µg/L), citalopram
(840 µg/L), moxifloxacin (694 µg/L), norfloxacin (420 µg/L),
azithromycin (300 µg/L), atenolol (300 µg/L), levofloxacin (200 µg/L)
are amongst other pharmaceuticals that have been detected at high
concentration. Only a few research groups have paid attention on
detecting pharmaceuticals in India. Disparity exists in occurrence data
with most of the studies concentrated in southern India. India is
amongst the top manufacturer and consumer of the pharmaceutical
compounds and with pharmaceuticals occurring at alarmingly high
concentration in environmental waters, much needed attention and
emphasis is required to conduct nation-wide occurrence study program to
fully assess the ecological risks possessed by the pharmaceuticals.