Quick Answer: Water samples from four Mumbai railway stations, CSMT, Kalyan, Bhiwandi Road and Lonavala, tested positive for E. coli bacteria, a sign of possible sewage contamination. E. coli infection can cause stomach cramps, diarrhoea and vomiting within 3 to 8 days of exposure, and in rare cases, a serious kidney complication in children and the elderly. Central Railway says corrective action is underway. Until then, avoid drinking directly from station taps, boil water for at least a minute, or carry your own purified water.
If you've ever filled your bottle from a tap at CSMT or Kalyan station without a second thought, here's a reason to think twice for now. Water samples collected from four railway stations in Mumbai, Chhatrapati Shivaji Maharaj Terminus (CSMT), Kalyan, Bhiwandi Road and Lonavala, have tested positive for E. coli bacteria, according to Free Press Journal.
These are stations that lakhs of commuters pass through every single day. So let's break down what this actually means, what E. coli does to your body, and what you can realistically do about it starting today.
What Exactly Was Found
According to the report, E. coli bacteria showed up in water samples from all four stations. Finding E. coli in drinking water is never a small detail, it specifically points to faecal contamination, meaning the water supply has come into contact with human or animal waste somewhere along the line, most likely through an ageing pipeline, a leak, or a cross-connection with a sewage line.
Central Railway's Electrical and Medical departments are reported to be working on corrective action for the affected supply. Beyond that general statement, further details, like the exact source of the contamination or a fixed timeline, haven't been made public yet.
Why E. Coli in Water Is Actually a Big Deal
E. coli (Escherichia coli) is a bacteria that normally lives harmlessly in your gut. But certain strains, especially Shiga toxin-producing E. coli (STEC), are genuinely harmful when ingested through contaminated water or food.
According to the World Health Organization, symptoms typically show up within 3 to 8 days of exposure, with most people falling sick around day 3 or 4. The usual signs are:
- Abdominal cramps
- Diarrhoea, which can progress to bloody diarrhoea in more serious cases
- Fever and vomiting
Most healthy adults recover within about 10 days without any lasting damage. But that's not the whole story.
The Complication Nobody Tells You About
Here's the part that genuinely deserves attention: in up to 10% of cases, E. coli infection can trigger a serious condition called haemolytic uraemic syndrome (HUS), according to WHO. HUS involves kidney failure, anaemia, and a dangerous drop in blood platelets.
This isn't a minor statistic. HUS carries a fatality rate of 3 to 5%, and around 1 in 4 people who develop it go on to experience neurological complications. The people most at risk of this complication are exactly the ones you'd want to protect the most: young children and elderly adults.
If you're a parent who lets your kids fill up bottles at a station tap, or you're travelling with elderly parents this week, this is genuinely worth being cautious about right now.
How to Protect Yourself Right Now
You don't need to panic, but a few simple habits make a real difference until the water supply is confirmed safe again:
- Avoid drinking directly from station taps at CSMT, Kalyan, Bhiwandi Road or Lonavala for now.
- Boil water for at least one minute if tap water is your only option, this is the WHO-recommended minimum to kill harmful bacteria.
- Carry your own sealed, purified water when commuting through these stations, especially for kids and elderly family members.
- Watch for symptoms like sudden stomach cramps, diarrhoea or vomiting in the days after passing through these stations, and don't dismiss it as "just a stomach bug" if it's unusually severe.
- See a doctor promptly if diarrhoea turns bloody, or if a child or elderly person shows signs of dehydration, reduced urination, or unusual tiredness.
Worth keeping handy for your daily commute: Amaayu's water range starts as multi-stage purified, pH-balanced packaged drinking water, sealed and ready before anything else is added. When you're unsure what's coming out of a public tap, carrying your own sealed bottle is one of the simplest things you can control. Explore Amaayu's Water Range →
Amaayu products are packaged drinking water and functional beverages. They are not a treatment for E. coli infection or any illness, and do not replace medical care if you're experiencing symptoms of waterborne infection.
Frequently Asked Questions
Is it safe to drink water from CSMT, Kalyan, or other Mumbai railway stations right now?
Water samples from CSMT, Kalyan, Bhiwandi Road and Lonavala have tested positive for E. coli, according to reports. Until Central Railway confirms the issue is resolved, it's safer to avoid drinking directly from station taps and carry your own sealed water instead.
What are the first signs of E. coli infection from water?
Abdominal cramps, diarrhoea, fever and vomiting are the earliest signs, usually appearing 3 to 8 days after exposure, with most people falling ill around day 3 or 4.
Can E. coli infection from water be serious?
For most healthy adults, it resolves within about 10 days. But in up to 10% of cases, it can lead to haemolytic uraemic syndrome (HUS), a serious kidney complication that's most dangerous for young children and elderly people.
Does boiling water actually kill E. coli?
Yes. Boiling water for at least one minute is the WHO-recommended way to kill harmful bacteria, including E. coli, when you're unsure about water safety.
What should I do if I already drank water from one of these stations?
Watch for symptoms like stomach cramps, diarrhoea or vomiting over the next few days. Mild symptoms usually pass on their own with rest and fluids, but see a doctor promptly if diarrhoea turns bloody or if a child or elderly person shows signs of dehydration.
The Bottom Line
This is exactly the kind of story that's easy to scroll past, until it's your station, your commute, or your child's water bottle. Contaminated water at some of Mumbai's busiest stations is a real, reported issue right now, not a rumour. The fix is genuinely simple: know which stations are affected, avoid the tap for now, boil water if that's your only option, and carry your own sealed water when you can. Small habit, real protection.
This article is based on media reports as of mid-August 2026. Details about the source of contamination and Central Railway's corrective timeline may be updated as more official information becomes available. This article is for general informational purposes only and is not medical advice. Please consult a qualified doctor if you or a family member experiences symptoms of a waterborne infection.
This article is brought to you by the Amaayu Wellness Team, who believe in everyday balance and wellness. For more wellness content, visit amaayu.com
