I'm afraid you're mistaken. Current research consistently shows that silver nanoparticles have no effect on antibiotic resistance, and in fact can be added to antibiotics to enhance their effectiveness. However antibiotic resistance is not a factor when all of the bacteria are killed by the silver. Our years of laboratory and field testing indicate that resistance is simply not occurring because all the bacteria are eliminated.
As to the idea that the drinking water is "laced with" silver: Silver is used widely in India and around the world to purify water and has been since Roman times. The WHO has determined that 0.1 mg/liter of silver in drinking water is safe for long-term consumption (i.e. over a 70-year lifespan). The silver ions released by pAge filters amount to a much lower level than that by orders of magnitude. It simply is not hazardous to the health of users in any way, and infinitely safer than drinking polluted water, which for most of India's 77 million people without access to improved drinking water, is a horribly unfair fact of life.
Please see: Effect of silver nanoparticles and antibiotics on antibiotic resistance genes in anaerobic digestion: http://www.ncbi.nlm.nih.gov/pubmed/23789571 Silver nanoparticles: the powerful nanoweapon against multidrug-resistant bacteria: http://www.ncbi.nlm.nih.gov/pubmed/22324439