The emergence of antibiotic-resistant infections has reached unprecedented levels and now outstrips our ability to fight it with existing drugs, European health experts are warning.
Each year in the EU over 25,000 people die of bacterial infections that are able to outsmart even the newest antibiotics.
The World Health Organization says the situation has reached a critical point.
A united push to make new drugs is urgently needed, it says.
Without a concerted effort, people could be dealing with the "nightmare scenario" of worldwide spread of untreatable infections, says the WHO.
One example is the New Delhi or NDM-1 superbug recently found in UK patients.
They brought the infection back with them from countries like India and Pakistan, where they had visited for medical treatment and cosmetic surgery.
Becoming untreatable
These superbugs are resistant to carbapenem antibiotics, which is concerning for experts because they are some of our most powerful weapons and are used for hard-to-treat infections that evade other drugs.
The Cardiff University researchers, who made the discovery last August, now say bacteria with this new genetic resistance to antibiotics have contaminated New Delhi's drinking water supply, meaning millions of people there could be carriers.
Dr Timothy Walsh and his team collected 171 swabs of seepage water and 50 public tap water samples from sites within a 12km radius of central New Delhi between September and October 2010.
The NDM-1 gene was found in two of the 50 drinking-water samples and 51 of 171 seepage samples.
Worryingly, the gene had spread to bacteria that cause dysentery and cholera, which can be easily passed from person to person via sewage-contaminated drinking water.
"Oral-faecal transmission of bacteria is a problem worldwide, but its potential risk varies with the standards of sanitation.
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